“The world is moving towards High Definition Television [HDTV]” “Don’t buy a regular TV now, they are going to be better in every way when HDTV comes into market”. Some of the many phrases dropped by people who are loosely following the HDTV effort. When asked, “How do you know?”, these people confidently responded with, “Because technology is just going to get better and better.” Though HDTV is revolutionizing the world, and the technology is getting better, very little thought is put into the effort done by engineers in the leading companies. People expect television to constantly improve, but these improvements do not occur on their own. Rather, they arise from many different factors, such as nationalistic politicians who push American companies to develop HDTV, the computer industry pushing for a digital television, or engineers inventing new ideas.
In Inventing Accuracy, Donald Mackenzie clearly describes a false perception people have regarding improvements in technology, a notion he refers to as a natural trajectory. Through a chronology of the history of nuclear missile guidance, he defines such a trajectory as "a direction of technical development that is simply natural, not created by social interests but corresponding to the inherent possibilities of the technology (pg 167). However, in the context of military guidance, he comes to the conclusion that these things can't really exist. All trajectories need to be helped along by technical, social, and political pressures. Nothing happens by itself.
Even so, people still believe technologies advance because it is natural phenomenon. Moore’s Law is a prediction that the pace of microchip technology change is such that the amount of data storage that a microchip can hold doubles every year or at least every 18 months. Intel’s 8080 in 1975 had 4500 transistors. In 1995, when Intel introduced the Pentium Pro, it had 5.5 million transistors. However it did not occur because it was on a predestined plan to do so, but rather engineers in Santa Clara working hard to compete with other companies. If no other company that creating chips existed, Intel would most likely be just as happy to fire all its engineers and sell their chips at high prices.
HDTV is no different. This paper strives to analyze HDTV as the product of technological trajectories similar to the way Mackenzie did for nuclear missile guidance. To look under the mask of the natural trajectory and present HDTV as a true product of its surroundings, a manifestation of corporate interests, technical desires, and government goals. This paper also will show that HDTV is not really the natural way of the world, but one method that has been contrived through the involvement of lots of different parties, and done so successfully enough to convince the nation that it's a natural thing that should be expected and accepted by society as a great technological advancement.
Download pdf HDTV: The Engineering History
Friday, February 27, 2009
Thursday, February 26, 2009
Digital Terrestrial Broadcasting in HDTV
The core of the digital terrestrial broadcasting, as well as satellite digital which started in December, 2000, is Hi-Vision. An HDTV image has five times more visual information than a conventional television picture, and 1,125 scanning lines in HDTV system give pictures their detailed realism. Also, a wide-screen format with a 16:9 aspect ratio provides a powerful viewing experience. HDTV also provides CD-quality sound and 5.1 surround sound broadcasting, which is capable of reproducing sounds with a realistic feeling of depth that gives listeners a heightened sense of involvement by using six-channel speaker system. NHK has delivered spectacular images from the Space Shuttle, the depth of the ocean, and the Antarctica. Almost 90% of NHK’s main channel (Digital General TV) is broadcast in HDTV.
Data broadcasting
Data broadcasting gives viewers access to information whenever they need it by simply pressing a remote control button. Viewers can request and withdraw detailed information in such emergency situations as earthquakes and severe storms, as well as program related data, local weather forecasts, and sports results. This function will enhance detailed information services.
Interactive services
Interactive functions allow viewers to actively participate in TV programs from their living room. One can join a quiz show as a competitor and join a contest as a juror by submitting the answers and opinions through the television screen. NHK’s most popular music program, “Red & White Year-end Song Festival” (to be aired on 31 December) will invite audience to screen the songs as the jurors.
Multi-channel services
Digital broadcasting has the bandwidth capacity to broadcast up to three different standard-definition programs on one single channel. For example, it is possible to air a children’s animation program, a language learning program, and a cooking program all at the same time on NHK Educational TV channel.
Download pdf Digital Terrestrial Broadcasting in HDTV
Data broadcasting
Data broadcasting gives viewers access to information whenever they need it by simply pressing a remote control button. Viewers can request and withdraw detailed information in such emergency situations as earthquakes and severe storms, as well as program related data, local weather forecasts, and sports results. This function will enhance detailed information services.
Interactive services
Interactive functions allow viewers to actively participate in TV programs from their living room. One can join a quiz show as a competitor and join a contest as a juror by submitting the answers and opinions through the television screen. NHK’s most popular music program, “Red & White Year-end Song Festival” (to be aired on 31 December) will invite audience to screen the songs as the jurors.
Multi-channel services
Digital broadcasting has the bandwidth capacity to broadcast up to three different standard-definition programs on one single channel. For example, it is possible to air a children’s animation program, a language learning program, and a cooking program all at the same time on NHK Educational TV channel.
Download pdf Digital Terrestrial Broadcasting in HDTV
Wednesday, February 25, 2009
Using FPGA-Based Channel Bonding for HDTV Over DSL
On an almost daily basis, new video or voice applications push the bandwidth requirements for DSL networks, while telecom carriers in the U.S. and worldwide are targeting delivery of digital and high-definition television (HDTV) to consumers. To achieve delivery of such services without deploying new fiber everywhere, carriers must leverage existing copper deployments already in the ground.
Most DSL lines offer enough capacity for delivering standard-definition television (SDTV). Most programs are available from streaming servers at bitrates of about 750 kbps, with some programs providing a 1.5 Mbps bitrate. However, to allow high-quality HDTV streaming and multiple channels simultaneously, a home must have a bandwidth of at least 16 Mbps. Although newer DSL generations of ADSL2 and VDSL can offer these speeds, they cannot offer high speed over a sufficiently longer distance on a typical DSL line. Therefore, HDTV programs can be delivered only to households close to the DSLAM. Those located further away can only receive lower quality SDTV programming.
To ensure that DSL remains the preferred choice for end users, service providers are looking for new ways to improve the performance of DSL networks. While VDSL and ADSL2 provide better performance, the distance limitations are difficult to overcome. Another scenario is to bring the DSLAMs closer to the end users, but the costs involved with installing new equipment in the network are often prohibitive.
Channel Bonding in DSLAMs and DSL Modems
DSL channel bonding provides the ideal mix of features: higher bandwidth to all users and the ability to extend the distance that can be reached at a certain bandwidth. Instead of using a single copper pair, DSL bonding distributes traffic over a bundle of copper pairs. To achieve an effective bandwidth of 12 Mbps, three DSL lines of 4 Mbps are bundled, with a channel bonding processor at each end of the lines. In most copper networks, subscribers are already connected via several wires, so no new cables need be installed to provide channel bonding service, as shown in Figure 1.
Download pdf Using FPGA-Based Channel Bonding for HDTV Over DSL
Most DSL lines offer enough capacity for delivering standard-definition television (SDTV). Most programs are available from streaming servers at bitrates of about 750 kbps, with some programs providing a 1.5 Mbps bitrate. However, to allow high-quality HDTV streaming and multiple channels simultaneously, a home must have a bandwidth of at least 16 Mbps. Although newer DSL generations of ADSL2 and VDSL can offer these speeds, they cannot offer high speed over a sufficiently longer distance on a typical DSL line. Therefore, HDTV programs can be delivered only to households close to the DSLAM. Those located further away can only receive lower quality SDTV programming.
To ensure that DSL remains the preferred choice for end users, service providers are looking for new ways to improve the performance of DSL networks. While VDSL and ADSL2 provide better performance, the distance limitations are difficult to overcome. Another scenario is to bring the DSLAMs closer to the end users, but the costs involved with installing new equipment in the network are often prohibitive.
Channel Bonding in DSLAMs and DSL Modems
DSL channel bonding provides the ideal mix of features: higher bandwidth to all users and the ability to extend the distance that can be reached at a certain bandwidth. Instead of using a single copper pair, DSL bonding distributes traffic over a bundle of copper pairs. To achieve an effective bandwidth of 12 Mbps, three DSL lines of 4 Mbps are bundled, with a channel bonding processor at each end of the lines. In most copper networks, subscribers are already connected via several wires, so no new cables need be installed to provide channel bonding service, as shown in Figure 1.
Download pdf Using FPGA-Based Channel Bonding for HDTV Over DSL
Tuesday, February 24, 2009
One Transistor Enables Clean HDTV and NTSC Video Sync Separation
The growing popularity and availability of HDTV is creating a small revolution in the video industry. New video systems must be capable of handling the standard NTSC (National Television System Committee) composite signal as well as high definition signals. Since low cost and low power concerns drive system designers to find the simplest solutions, this article describes a one transistor network that enables a single video sync separator to operate for both HDTV and NTSC systems.
In the sample NTSC signal shown in Figure 1, the color burst and color subcarriers are identified. A “slice level” is drawn half-way down the drop for horizontal synchronization. Variations in color burst or dark blues within the subcarrier can dip below the slice level, causing false sync pulses in addition to the 15kHz horizontal sync signal. With HD (High Definition) signals (Figure 2), the color information is carried separately, so there is no color burst or subcarrier to cause false sync pulses. However, note that the horizontal sync pulse is shorter and higher frequency (20kHz).
It is advantageous if a single sync separator will operate with both HD and NTSC signals. Since false triggers can occur with NTSC signals, a filter can be added in the sync separator path to reduce the height of the color burst and subcarrier signals. This filter cannot be included during HD detection, though, since its shorter sync pulse would also be attenuated, causing missed triggers.
The ISL59885 is a sync separator which features both HD and NTSC detection. An output, labeled HD, is provided which responds to the type of input - high for NTSC and low for HD. This external pin can be used to insert a low-pass filter into the sync separator path preventing false sync pulses in composite video. The circuit is shown in Figure 3. When composite signal (NTSC/PAL) is detected, the filter is enabled by applying a logic high to the base of the transistor. When component signal (HD) is detected, the filter is disabled by having the HD pin at a logic low state. Although the transistor is disabled during HD, a low pass filter is still present to filter out any noise present at the input.
Download pdf One Transistor Enables Clean HDTV and NTSC Video Sync Separation
In the sample NTSC signal shown in Figure 1, the color burst and color subcarriers are identified. A “slice level” is drawn half-way down the drop for horizontal synchronization. Variations in color burst or dark blues within the subcarrier can dip below the slice level, causing false sync pulses in addition to the 15kHz horizontal sync signal. With HD (High Definition) signals (Figure 2), the color information is carried separately, so there is no color burst or subcarrier to cause false sync pulses. However, note that the horizontal sync pulse is shorter and higher frequency (20kHz).
It is advantageous if a single sync separator will operate with both HD and NTSC signals. Since false triggers can occur with NTSC signals, a filter can be added in the sync separator path to reduce the height of the color burst and subcarrier signals. This filter cannot be included during HD detection, though, since its shorter sync pulse would also be attenuated, causing missed triggers.
The ISL59885 is a sync separator which features both HD and NTSC detection. An output, labeled HD, is provided which responds to the type of input - high for NTSC and low for HD. This external pin can be used to insert a low-pass filter into the sync separator path preventing false sync pulses in composite video. The circuit is shown in Figure 3. When composite signal (NTSC/PAL) is detected, the filter is enabled by applying a logic high to the base of the transistor. When component signal (HD) is detected, the filter is disabled by having the HD pin at a logic low state. Although the transistor is disabled during HD, a low pass filter is still present to filter out any noise present at the input.
Download pdf One Transistor Enables Clean HDTV and NTSC Video Sync Separation
Monday, February 23, 2009
SDTV Lens on HDTV Camera: To Be or Not to Be?
The essential distinction between SDTV and HDTV is bound up in the core issue of the term “high definition”. It implies that HDTV is distinguished from traditional video primarily by more “definition” – thus producing much higher picture sharpness. Thus, any discourse on mixing SDTV products with HDTV products needs to be closely examined from the viewpoint of its impact on the “high definition” aspect of the final imagery. Unlike the digital cameras and recorders that make up contemporary digital imaging systems, the lens is a totally analog technology. It is a very physical technology, in the fullest sense of the word. The lens is also dynamic— in terms of the substantial degree of control it can exercise over the object image that it presents to the camera image sensors.
Those variations in light level, focus, and focal range offered by the lens come with some technical penalties. As this paper is intended to examine “definition” the focus will be on the behavior of lens resolution. It is useful to establish some metrics in optical terms, for picture “definition”. Audio and video systems (such as a television camera) are described by considerations of bandwidth and the specific system responses over the frequency ranges encompassed within their respective bandwidths. A similar approach can describe the resolution performance of a lens.
OPTICAL BANDWIDTH
Lens Contrast and Resolution are inextricably intertwined. A series of closely spaced alternating black and white lines are visually distinguished by their relative contrast to each other. As their thickness and spacing are progressively reduced our human visual system is tasked to distinguish between these alternating lines. At some point we fail to do so and they blur into a gray patch. The same thing occurs as the test chart object scene passes through a lens. As the alternating lines increase in spatial frequency their optical representation by the lens will exhibit a progressive roll-off as simplistically illustrated in
Figure 1. In other words, the contrast reproduction capability of the lens is modulated as a function of the fineness of detail of the alternating black and white lines. This particular representation of the lens output is technically termed the Modulation Transfer Function – or MTF. The horizontal axis represents the spatial frequency (increasingly fine detail from left to right) in Line-pairs per millimeter (Lp/mm). The vertical axis is the contrast (amplitude of black to white) of the optical image output of the lens.
Download pdf SDTV Lens on HDTV Camera: To Be or Not to Be?
Those variations in light level, focus, and focal range offered by the lens come with some technical penalties. As this paper is intended to examine “definition” the focus will be on the behavior of lens resolution. It is useful to establish some metrics in optical terms, for picture “definition”. Audio and video systems (such as a television camera) are described by considerations of bandwidth and the specific system responses over the frequency ranges encompassed within their respective bandwidths. A similar approach can describe the resolution performance of a lens.
OPTICAL BANDWIDTH
Lens Contrast and Resolution are inextricably intertwined. A series of closely spaced alternating black and white lines are visually distinguished by their relative contrast to each other. As their thickness and spacing are progressively reduced our human visual system is tasked to distinguish between these alternating lines. At some point we fail to do so and they blur into a gray patch. The same thing occurs as the test chart object scene passes through a lens. As the alternating lines increase in spatial frequency their optical representation by the lens will exhibit a progressive roll-off as simplistically illustrated in
Figure 1. In other words, the contrast reproduction capability of the lens is modulated as a function of the fineness of detail of the alternating black and white lines. This particular representation of the lens output is technically termed the Modulation Transfer Function – or MTF. The horizontal axis represents the spatial frequency (increasingly fine detail from left to right) in Line-pairs per millimeter (Lp/mm). The vertical axis is the contrast (amplitude of black to white) of the optical image output of the lens.
Download pdf SDTV Lens on HDTV Camera: To Be or Not to Be?
Sunday, February 22, 2009
HDTV Standards and Practices for Digital Broadcasting
This eduGuide is intended for the video professional that is starting to become involved with designing, specifying, operating or maintaining digital video broadcast and distribution systems for HDTV. For over 50 years our industry has used television technology of a primarily analog nature. True, some digital technology has been used in broadcast facilities for standard definition or NTSC and PAL systems, but its deployment has been limited and ultimately converted back to an analog signal for distribution and broadcast.
Today, HDTV is the first broadcast technology designed to be exclusively digital from image capture to display on the consumer’s TV set. Many different technologies are used where the video, and audio, undergoes many transformations from start to finish. This eduGuide will help you to understand the chain of technologies used, the industry standards behind them, for both copper and fiber optic distribution, and the practices video professionals are developing for the new world of HDTV.
The Role of Technical Standards
The broadcast industry, unlike the A/V and computer industries, has historically been a proponent and practitioner of technical standards for video and audio processing and distribution. The reason is simple: interoperability. The broadcaster, and those in related professional video industries, need to be able to select the best equipment for the task at hand. Since all the equipment in a distribution or edit suite will need to process the same video and audio, there is a need to define and adhere to interface standards between the various pieces of equipment.
There are several technical standards organizations in the world that develop and promote these standards but perhaps the most noted is SMPTE. The Society of Motion Picture and Television Engineers (SMPTE) has membership and participation from individuals, broadcasters and equipment manufacturers from around the world. The expertise and experience brought to bear by this group creates a forum for developing very powerful and lasting standards.
The buyer and user of broadcast equipment is the ultimate beneficiary of this process. He can be assured that products compliant with a particular set of standards will allow video and audio signals to be communicated between them in a recognizable way without requiring additional processing or interfacing. The benefit to the user is lower design and operational costs and a wider selection of equipment to choose from for a particular application without being locked in to any one equipment manufacturer employing proprietary interfaces and protocols.
Download pdf HDTV Standards and Practices for Digital Broadcasting
Today, HDTV is the first broadcast technology designed to be exclusively digital from image capture to display on the consumer’s TV set. Many different technologies are used where the video, and audio, undergoes many transformations from start to finish. This eduGuide will help you to understand the chain of technologies used, the industry standards behind them, for both copper and fiber optic distribution, and the practices video professionals are developing for the new world of HDTV.
The Role of Technical Standards
The broadcast industry, unlike the A/V and computer industries, has historically been a proponent and practitioner of technical standards for video and audio processing and distribution. The reason is simple: interoperability. The broadcaster, and those in related professional video industries, need to be able to select the best equipment for the task at hand. Since all the equipment in a distribution or edit suite will need to process the same video and audio, there is a need to define and adhere to interface standards between the various pieces of equipment.
There are several technical standards organizations in the world that develop and promote these standards but perhaps the most noted is SMPTE. The Society of Motion Picture and Television Engineers (SMPTE) has membership and participation from individuals, broadcasters and equipment manufacturers from around the world. The expertise and experience brought to bear by this group creates a forum for developing very powerful and lasting standards.
The buyer and user of broadcast equipment is the ultimate beneficiary of this process. He can be assured that products compliant with a particular set of standards will allow video and audio signals to be communicated between them in a recognizable way without requiring additional processing or interfacing. The benefit to the user is lower design and operational costs and a wider selection of equipment to choose from for a particular application without being locked in to any one equipment manufacturer employing proprietary interfaces and protocols.
Download pdf HDTV Standards and Practices for Digital Broadcasting
Saturday, February 21, 2009
HDTV and Mobile TV: post Digital Switchover
In May 2006, we produced a discussion paper examining the future market demand and technical opportunities for digital terrestrial broadcasting. We proposed the adoption of new technologies – the MPEG4 video coding standard and a new broadcasting standard, now called DVB-T2 – that would enable the existing UHF spectrum to be used much more efficiently to carry both HDTV and mobile broadcast services alongside existing Freeview services once UK analogue TV broadcasting ends in 2012.
That paper contributed to a UK and an international dialogue that has led to the recent publication of proposals from Ofcom and the public service broadcasters to introduce terrestrial HDTV services in the UK, based on the new DVB-T2 standard. Ofcom has also indicated that it plans to auction off 14 of the UHF channels currently used for analogue broadcasting, leaving 32 channels to carry 6 digital TV multiplexes (networks).
Last autumn the authors of the original paper came together again to build on the progress made over the previous 18 months and to develop their earlier proposals taking into account the full potential for digital terrestrial broadcasting in the UK. This paper makes a set of radical proposals that build on current plans. If adopted over the next several years, these would enable the UK to retain its world leadership in digital terrestrial broadcasting bringing significant incremental benefits to every stakeholder – consumers, manufacturers, broadcasters and media companies, network operators, regulators, and the Government.
Proposals – For Discussion
We take as a working assumption that digital switchover will be completed by 2012 and that Ofcom’s proposals for the sixth multiplex will eventually go ahead, offering HDTV services using MPEG4 and DVB-T2. We believe these steps are not sufficient to meet consumers’ or industry’s needs. (It should also be noted that a separate proposal to introduce terrestrial HDTV using DVB-T and MPEG4 has been made.)
Download pdf HDTV and Mobile TV: post Digital Switchover
That paper contributed to a UK and an international dialogue that has led to the recent publication of proposals from Ofcom and the public service broadcasters to introduce terrestrial HDTV services in the UK, based on the new DVB-T2 standard. Ofcom has also indicated that it plans to auction off 14 of the UHF channels currently used for analogue broadcasting, leaving 32 channels to carry 6 digital TV multiplexes (networks).
Last autumn the authors of the original paper came together again to build on the progress made over the previous 18 months and to develop their earlier proposals taking into account the full potential for digital terrestrial broadcasting in the UK. This paper makes a set of radical proposals that build on current plans. If adopted over the next several years, these would enable the UK to retain its world leadership in digital terrestrial broadcasting bringing significant incremental benefits to every stakeholder – consumers, manufacturers, broadcasters and media companies, network operators, regulators, and the Government.
Proposals – For Discussion
We take as a working assumption that digital switchover will be completed by 2012 and that Ofcom’s proposals for the sixth multiplex will eventually go ahead, offering HDTV services using MPEG4 and DVB-T2. We believe these steps are not sufficient to meet consumers’ or industry’s needs. (It should also be noted that a separate proposal to introduce terrestrial HDTV using DVB-T and MPEG4 has been made.)
Download pdf HDTV and Mobile TV: post Digital Switchover
Friday, February 20, 2009
HDTV: To be or not to be
When budding scientists in elementary, middle and high school need information about chemistry, they have a myriad of sources online. One very popular source turns out to be the Lab’s periodic table site, linked to the Chemistry (C) Division’s external home page. How popular is it? Since May 2000 the site has logged nearly two million hits. The site is maintained and updated by computer technician Nick Degidio and staff member Moses Attrep both of Isotope and Nuclear Chemistry (C-INC). “We average about 30,000 hits a month,” said Degidio. “And that number doubles around finals, term papers and midterm exam time. Its popularity is pretty surprising.”
High definition television is coming to a screen near you — at least we hope so. For some television viewers the system is already in place and working well. For many more consumers, however, the technology may be a bit later in coming. The transition has proven troublesome for television broadcasters, television set manufacturers and government officials as technological, economic and even political issues have slowed the process.
The promise of HDTV is worth the wait, but only if you want the benefits of a higher-resolution picture — imagine doubling the resolution of today’s analog television — coupled with a wider screen image close to the dimensions of a motion picture image. Add to that Dolby digital sound with six separate audio tracks for detailed and realistic surround sound and you’ll probably agree HDTV is a better way to see television. Many people involved in the transition are beginning to fear that when the federally mandated time comes in 2006 to convert broadcast formats, a large per- centage of the population will not be ready
Get pdf download HDTV: To be or not to be
High definition television is coming to a screen near you — at least we hope so. For some television viewers the system is already in place and working well. For many more consumers, however, the technology may be a bit later in coming. The transition has proven troublesome for television broadcasters, television set manufacturers and government officials as technological, economic and even political issues have slowed the process.
The promise of HDTV is worth the wait, but only if you want the benefits of a higher-resolution picture — imagine doubling the resolution of today’s analog television — coupled with a wider screen image close to the dimensions of a motion picture image. Add to that Dolby digital sound with six separate audio tracks for detailed and realistic surround sound and you’ll probably agree HDTV is a better way to see television. Many people involved in the transition are beginning to fear that when the federally mandated time comes in 2006 to convert broadcast formats, a large per- centage of the population will not be ready
Get pdf download HDTV: To be or not to be
Thursday, February 19, 2009
Model D9887 HDTV Modular Receiver
The Model D9887 HDTV Modular Receiver is designed to receive broadcasts using MPEG-2 4:2:0 or MPEG-4 AVC* 4:2:0 digital compression technology. It is ideally suited for decoding digitally compressed signals for primary distribution and contribution applications. With modular inputs and outputs, the D9887 receiver can be configured to suit the specific needs of your application. An optional IP input and output interface is available for IPTV applications.
Secured Broadcast Reception
Availability of optional BISS conditional access (CA) with modes 1 and E help provide protected distribution of video, audio and/or data broadcasts to multiple locations. Contact Scientific Atlanta for availability of BISS for your configuration.
Key Features
• Single or dual decoder configuration
• Choice of MPEG-2/DVB 4:2:0 or MPEG-4 AVC 4:2:0 video decoding
• HDTV support for 1080i @ 25, 29.97, 30 fps, 720p @ 50, 59.94, 60 fps and 480p @ 59.94 fps
• SD support for 480i @ 29.95 fps and 576i @ 25 fps
• 1-81 Mbps decodable video bit rate dependent on video decoder option
• 1-160 Mbps transport data rate dependant on selected input options
• Video resolution interpolation (letter box, cropped or anamorphic)
• Configured and controlled via front panel LCD
• Two analog stereo outputs per program
• SNMP control and monitoring
• ROSA® Network Management (NMS) support
• Web-based management (10/100 BaseT)
Get pdf download Model D9887 HDTV Modular Receiver
Secured Broadcast Reception
Availability of optional BISS conditional access (CA) with modes 1 and E help provide protected distribution of video, audio and/or data broadcasts to multiple locations. Contact Scientific Atlanta for availability of BISS for your configuration.
Key Features
• Single or dual decoder configuration
• Choice of MPEG-2/DVB 4:2:0 or MPEG-4 AVC 4:2:0 video decoding
• HDTV support for 1080i @ 25, 29.97, 30 fps, 720p @ 50, 59.94, 60 fps and 480p @ 59.94 fps
• SD support for 480i @ 29.95 fps and 576i @ 25 fps
• 1-81 Mbps decodable video bit rate dependent on video decoder option
• 1-160 Mbps transport data rate dependant on selected input options
• Video resolution interpolation (letter box, cropped or anamorphic)
• Configured and controlled via front panel LCD
• Two analog stereo outputs per program
• SNMP control and monitoring
• ROSA® Network Management (NMS) support
• Web-based management (10/100 BaseT)
Get pdf download Model D9887 HDTV Modular Receiver
Wednesday, February 18, 2009
MA-3300HD HDTV Digital Master Switcher
MA-3300HD HDTV master switcher provides high performance and operability to adopt embedded audio SDI aimed digital broadcasting. This switcher has 16 inputs, 2 program output, 1 preset output, and 4 down stream keyers.
Features
● Designed for embedded audio SDI (8 channel in audio)
● 16x5 Matrix Module
Program and Preset Line (Breakaway of video and audio)
Aux Line for Monitoring
● Maximum 4 DSKs of Self and External Key
Luminance and Linear Key
Boarder Effect
Clip and Gain Control
● Transition Effect of CUT, FF, CF, FC and Mix
● Internal Source Generator of Black and Silence for Program and Preset Line
● Relay Bypass for PGM1 Out from BASE2 In (for Emergency Matrix)
● Redundant Power Supply
● Monitoring
The status of each card can be monitored via SNMP. Condition of the video, audio and reference signals can be also monitored.
● Option
APS (Automatic Program Control System)
AES/EBU Digital Audio Matrix
Audio Level Meter
Clean Output
APS (Automatic Program Control System
Automatic program control and data management by operating personal computer are available. It can play back the peripheral equipment of VTR, Video Server and Character Generator automatically in accordance with program schedule data.
Feature
• More than 1,000 event data per week can be stored.
• Basic language is English and several foreign language can be displayed for Title and comment.
Ex. Japanese, Chinese, Spanish, French, etc
• Several kind of VTR and Server can be control by serial interface.
Ex. Sony, Panasonic, Thomson, etc
Get pdf dwnload MA-3300HD HDTV Digital Master Switcher
Features
● Designed for embedded audio SDI (8 channel in audio)
● 16x5 Matrix Module
Program and Preset Line (Breakaway of video and audio)
Aux Line for Monitoring
● Maximum 4 DSKs of Self and External Key
Luminance and Linear Key
Boarder Effect
Clip and Gain Control
● Transition Effect of CUT, FF, CF, FC and Mix
● Internal Source Generator of Black and Silence for Program and Preset Line
● Relay Bypass for PGM1 Out from BASE2 In (for Emergency Matrix)
● Redundant Power Supply
● Monitoring
The status of each card can be monitored via SNMP. Condition of the video, audio and reference signals can be also monitored.
● Option
APS (Automatic Program Control System)
AES/EBU Digital Audio Matrix
Audio Level Meter
Clean Output
APS (Automatic Program Control System
Automatic program control and data management by operating personal computer are available. It can play back the peripheral equipment of VTR, Video Server and Character Generator automatically in accordance with program schedule data.
Feature
• More than 1,000 event data per week can be stored.
• Basic language is English and several foreign language can be displayed for Title and comment.
Ex. Japanese, Chinese, Spanish, French, etc
• Several kind of VTR and Server can be control by serial interface.
Ex. Sony, Panasonic, Thomson, etc
Get pdf dwnload MA-3300HD HDTV Digital Master Switcher
Analog Reconstruction Filter for HDTV Using the THS8133, THS8134, THS8135, THS8200
The THS8133, THS8134, THS8135, and the THS8200 devices are part of a family of chips for graphics and video applications, which contain triple DACs that operate up to 240 MSPS. For television applications, an analog low-pass filter is required to reconstruct the signal that is input to the monitor. High definition television (HDTV) requires a sampling frequency of 74.25 MHz and has pass-band, transition-band, and stop-band attenuation requirements, which affect the complexity of the filter. A higher sampling rate results in a lower filter complexity.
The THS8133, THS8134, THS8135, and THS8200 comprise a family of graphics/video chips that have triple digital-to-analog converters (DACs) that convert digital graphics signals GBR/YPbPr to analog. They insert bilevel or trilevel syncs into the green/luma signal. The trilevel sync is used for horizontal synchronization of high definition (HD) television signals. Table 1 lists the chips and their capabilities. The THS8200 incorporates a 1:2 upsampling and interpolation filter, which results in a simplification of the filter design that is used to reconstruct the analog output signal. The advantages of 2x oversampling are examined for the high definition (HD) television application.
Get pdf download Analog Reconstruction Filter for HDTV Using the THS8133, THS8134, THS8135, THS8200
The THS8133, THS8134, THS8135, and THS8200 comprise a family of graphics/video chips that have triple digital-to-analog converters (DACs) that convert digital graphics signals GBR/YPbPr to analog. They insert bilevel or trilevel syncs into the green/luma signal. The trilevel sync is used for horizontal synchronization of high definition (HD) television signals. Table 1 lists the chips and their capabilities. The THS8200 incorporates a 1:2 upsampling and interpolation filter, which results in a simplification of the filter design that is used to reconstruct the analog output signal. The advantages of 2x oversampling are examined for the high definition (HD) television application.
Get pdf download Analog Reconstruction Filter for HDTV Using the THS8133, THS8134, THS8135, THS8200
Tuesday, February 17, 2009
Setting Up Your HDTV (High-Definition TV)
Where to Begin
Review your HDTV’s User’s Manual to determine which type of TV connection is recommended. Generally, it is one of three types:
HDMI to HDMI, HDMI to DVI or Component. HDMI is recommended for the highest-quality video and is the easiest because it includes the audio signal. Based on the recommended connection from your TV manufacturer, locate the appropriate connection diagram on the right. Ensure that you have all of the necessary cables and follow the connection diagram.
Once complete, you will need to set the AT&T U-verse SM receiver aspect ratio to match the settings of your HDTV and your viewing prefer- ence. (see page 2) Generally, HD content is best viewed in its native 16x9 widescreen aspect ratio. Ensure that you have subscribed to AT&T U-verse HD service. If you have not done this, please call 800-ATT-2020 to request this service. Additional detailed information may be found in the AT&T Receiver Manual and Features Guide.
Connect With an HDMI Connector
Some HDTVs have a high-definition multimedia Interface (HDMI) connector. The HDMI connector provides both a digital video and audio connection.
The HDMI connector can also provide a connection to an HDTV with a DVI input. If your HDTV has a Digital Visual Interface (DVI) connector, you will need an HDMI-to-DVI adaptor and you will need to make a separate audio connection.
Note: The DVI port on the TV must support high-bandwidth digital content protection (HDCP).
Cables Used in This Configuration
1 HDMI-to-HDMI cable or
1 HDMI-to-DVI Adaptor, and RCA audio left/right cables
Get pdf Setting Up Your HDTV (High-Definition TV)
Review your HDTV’s User’s Manual to determine which type of TV connection is recommended. Generally, it is one of three types:
HDMI to HDMI, HDMI to DVI or Component. HDMI is recommended for the highest-quality video and is the easiest because it includes the audio signal. Based on the recommended connection from your TV manufacturer, locate the appropriate connection diagram on the right. Ensure that you have all of the necessary cables and follow the connection diagram.
Once complete, you will need to set the AT&T U-verse SM receiver aspect ratio to match the settings of your HDTV and your viewing prefer- ence. (see page 2) Generally, HD content is best viewed in its native 16x9 widescreen aspect ratio. Ensure that you have subscribed to AT&T U-verse HD service. If you have not done this, please call 800-ATT-2020 to request this service. Additional detailed information may be found in the AT&T Receiver Manual and Features Guide.
Connect With an HDMI Connector
Some HDTVs have a high-definition multimedia Interface (HDMI) connector. The HDMI connector provides both a digital video and audio connection.
The HDMI connector can also provide a connection to an HDTV with a DVI input. If your HDTV has a Digital Visual Interface (DVI) connector, you will need an HDMI-to-DVI adaptor and you will need to make a separate audio connection.
Note: The DVI port on the TV must support high-bandwidth digital content protection (HDCP).
Cables Used in This Configuration
1 HDMI-to-HDMI cable or
1 HDMI-to-DVI Adaptor, and RCA audio left/right cables
Get pdf Setting Up Your HDTV (High-Definition TV)
Monday, February 16, 2009
Wireless HDTV – Compressed or Uncompressed?
Wireless HDTV continues to be a hot topic in the consumer electronics space. The need for a solution that will finally eliminate audio/video wires is stronger than ever. The TV market is at an inflection point ready to take off, propelled by a combination of major technical and regulatory advances. Flat panel display, LCD and plasma technologies have enabled an amazing offering of elegant TVs that most people want in their living room. HD content is also fueling the demand for HDTVs, with most consumers in the US and Japan having access to a wide array of HD content from TV networks and cable channels, and distributed via terrestrial, cable or satellite broadcasts. In the US this trend is facilitated by the FCC which is making sure through regulation and its influence on cable/satellite operators that HDTV is finally going to happen and on a large scale. Other world markets will follow, including Europe, which already has several satellite providers offering HD programming.
Sporting events such as the Super-Bowl or the Olympic Games see more people rushing to spend thousands of dollars on new HDTV sets. The availability of new HD DVDs will only intensify this demand. This hot market is attracting new players from the PC space such as HP and Dell who hope to take a slice of the TV market from the incumbent TV brands. With such intense competition in this lucrative market, CE manufacturers are investing heavily in differentiating qualities enabling them to offer more elegant designs, better picture quality and more functions. A wireless interface would be a perfect addition to their offerings.
Consumers have shown that they like wireless. The proliferation of cordless phones, Bluetooth headsets and Wi-Fi home networking kits are just a few indications of this preference. Consumers are very likely to opt for a TV with a wireless interface over a TV without one. What is the point of spending so much money on an elegant wall-hanging flat panel TV if its aesthetic appeal is compromised by wires running to the display? To illustrate this concern, one TV manufacturer tells a story about a couple at an electronics store where the wife says: “OK, you can have your silly four- thousand dollar TV, but I don’t want to see any wires running through our living room…”
The need for wireless HDTV is even stronger when it comes to multimedia projectors. The market for HDTV multimedia projectors for home use is growing dramatically. A true cinema experience with a huge picture cannot be matched by TV sets, and the space occupied by these machines is very small. In many cases a projector is not purchased in place of a TV but rather as a complement to it; to be used for special events such as parties and other social gatherings or a ‘night out’ at the home cinema. Although growth is strong, this market is very far from realizing its potential. Perhaps the greatest inhibitor of further growth is the installation difficulty. Having to run video wires across the room to the projector discourages many from purchasing this device. The high prices – as much as several hundreds of dollars – of the long video cables required for projector installation, make the installation experience even more painful. A wireless interface would make all the difference.
It is not surprising therefore, that so many companies have been trying to address this need. Many top TV OEMs have been spending resources on wireless TV technology, while standard bodies and special interest groups, such as 802.11n and UWB, are also targeting this application. Most of the solutions that have been proposed for wireless HDTV share a common assumption: the HD video stream delivered wirelessly is compressed with a typical data rate of 10-30 Mbps. This assumption is based on the premise that video is distributed to the home through terrestrial, cable or satellite...
Get pdf download Wireless HDTV – Compressed or Uncompressed?
Sporting events such as the Super-Bowl or the Olympic Games see more people rushing to spend thousands of dollars on new HDTV sets. The availability of new HD DVDs will only intensify this demand. This hot market is attracting new players from the PC space such as HP and Dell who hope to take a slice of the TV market from the incumbent TV brands. With such intense competition in this lucrative market, CE manufacturers are investing heavily in differentiating qualities enabling them to offer more elegant designs, better picture quality and more functions. A wireless interface would be a perfect addition to their offerings.
Consumers have shown that they like wireless. The proliferation of cordless phones, Bluetooth headsets and Wi-Fi home networking kits are just a few indications of this preference. Consumers are very likely to opt for a TV with a wireless interface over a TV without one. What is the point of spending so much money on an elegant wall-hanging flat panel TV if its aesthetic appeal is compromised by wires running to the display? To illustrate this concern, one TV manufacturer tells a story about a couple at an electronics store where the wife says: “OK, you can have your silly four- thousand dollar TV, but I don’t want to see any wires running through our living room…”
The need for wireless HDTV is even stronger when it comes to multimedia projectors. The market for HDTV multimedia projectors for home use is growing dramatically. A true cinema experience with a huge picture cannot be matched by TV sets, and the space occupied by these machines is very small. In many cases a projector is not purchased in place of a TV but rather as a complement to it; to be used for special events such as parties and other social gatherings or a ‘night out’ at the home cinema. Although growth is strong, this market is very far from realizing its potential. Perhaps the greatest inhibitor of further growth is the installation difficulty. Having to run video wires across the room to the projector discourages many from purchasing this device. The high prices – as much as several hundreds of dollars – of the long video cables required for projector installation, make the installation experience even more painful. A wireless interface would make all the difference.
It is not surprising therefore, that so many companies have been trying to address this need. Many top TV OEMs have been spending resources on wireless TV technology, while standard bodies and special interest groups, such as 802.11n and UWB, are also targeting this application. Most of the solutions that have been proposed for wireless HDTV share a common assumption: the HD video stream delivered wirelessly is compressed with a typical data rate of 10-30 Mbps. This assumption is based on the premise that video is distributed to the home through terrestrial, cable or satellite...
Get pdf download Wireless HDTV – Compressed or Uncompressed?
Sunday, February 15, 2009
Beyond HDTV – television ‘on the run’?
When is enough, enough? Surely the paint is barely dry on the signposts to HDTV? Why spend time and money looking beyond that? It will confuse the public – and quite possibly broadcast management as well. These days, surely technology evolution is in ‘dog years’. So come on, let’s start when we really need something. And by the way, did you hear about the economic downturn? The answer to the why of ‘beyond HDTV’ lies in the very, very long lead times that new television systems fundamentally need. The answer lies in making the distinction between what we might call ‘long-run’ and ‘short-run’ new systems.
The Internet is a fantastic vehicle for introducing new systems, because there is no new infrastructure needed, either for the provider or the user. We already have PCs and the Internet itself. All you need is to download software. These are ‘short-run’ new systems.
Although not a black-and-white distinction, we also need to look beyond the short-run, to systems which do need investments by the provider and user, and new delivery infrastructures. This is the ‘long-run’. It is in this category that ‘beyond HDTV ‘ lies. Any sensible person looks both to the short-run and the long-run – and understands the distinction. We should do the same, because there is always a ‘long-run’.
Today, in 2009, there are about 100 HDTV channels in Europe. But, the founding father of HDTV, Dr Fujio, had the idea for HDTV during the Tokyo Olympic Games of 1964. He thought the public should have a way of feeling they were virtually present on such great occasions. He was right, and we do. The first HDTV broadcasts (in the 1125i/60 format) were as long ago as 1984 in Japan – over twenty years ago. So, the time taken from conception of the idea to rollout of services has been, for us in Europe, over forty years. Could anyone doubt that, on this evidence, it is reasonable for us to start now looking ahead to the next step beyond HDTV?
The tests done in 2008 using the NHK Super Hi-Vision (SHV) technology were important and useful in many ways, and much of the background is given in the three articles published in this special edition of EBU Technical Review.
Get pdf download Beyond HDTV – television ‘on the run’?
The Internet is a fantastic vehicle for introducing new systems, because there is no new infrastructure needed, either for the provider or the user. We already have PCs and the Internet itself. All you need is to download software. These are ‘short-run’ new systems.
Although not a black-and-white distinction, we also need to look beyond the short-run, to systems which do need investments by the provider and user, and new delivery infrastructures. This is the ‘long-run’. It is in this category that ‘beyond HDTV ‘ lies. Any sensible person looks both to the short-run and the long-run – and understands the distinction. We should do the same, because there is always a ‘long-run’.
Today, in 2009, there are about 100 HDTV channels in Europe. But, the founding father of HDTV, Dr Fujio, had the idea for HDTV during the Tokyo Olympic Games of 1964. He thought the public should have a way of feeling they were virtually present on such great occasions. He was right, and we do. The first HDTV broadcasts (in the 1125i/60 format) were as long ago as 1984 in Japan – over twenty years ago. So, the time taken from conception of the idea to rollout of services has been, for us in Europe, over forty years. Could anyone doubt that, on this evidence, it is reasonable for us to start now looking ahead to the next step beyond HDTV?
The tests done in 2008 using the NHK Super Hi-Vision (SHV) technology were important and useful in many ways, and much of the background is given in the three articles published in this special edition of EBU Technical Review.
Get pdf download Beyond HDTV – television ‘on the run’?
Saturday, February 14, 2009
Experiments with Delivery of HDTV over IP Networks
The conversion of broadcast television from the legacy analog PAL and NTSC standards to digital format has many exciting implications. These include the possible convergence of television distribution and computer network infrastructures, allowing interactive applications, and the increase in quality possible with high definition digital formats.
To date, the different aspects of this convergence have been studied in isolation: there has been much work on the transport of compressed standard definition TV over IP, and much work defining protocols and standards for high definition TV (HDTV), but few have studied the transport of HDTV over IP. In this paper we present our initial experiments with a system to deliver production quality uncompressed HDTV over IP networks.
Why do we chose to deliver uncompressed HDTV? Several reasons, primarily to maintain image quality and reduce latency. This is most useful in a production facility, where image degradation due to repeated compression cycles is undesirable, but may also be appropriate for very high quality telepresence applications. Delivery of compressed HDTV, using existing MPEG-2 over IP standards, may be more appropriate for other applications.
The outline of this paper is as follows: section 2 covers background in HDTV technology, protocols for transport of video over IP networks and network performance. This is followed, in section 3 with a discussion of the options for protocol development, with our design being outlined in section 4. Section 5 provides preliminary performance analysis of our system, demonstrating transmission of HDTV over a wide-area IP network, with section 6 outlining directions for further development. Finally, we summarize related work in section 7, and provide conclusions.
Get pdf download Experiments with Delivery of HDTV over IP Networks
To date, the different aspects of this convergence have been studied in isolation: there has been much work on the transport of compressed standard definition TV over IP, and much work defining protocols and standards for high definition TV (HDTV), but few have studied the transport of HDTV over IP. In this paper we present our initial experiments with a system to deliver production quality uncompressed HDTV over IP networks.
Why do we chose to deliver uncompressed HDTV? Several reasons, primarily to maintain image quality and reduce latency. This is most useful in a production facility, where image degradation due to repeated compression cycles is undesirable, but may also be appropriate for very high quality telepresence applications. Delivery of compressed HDTV, using existing MPEG-2 over IP standards, may be more appropriate for other applications.
The outline of this paper is as follows: section 2 covers background in HDTV technology, protocols for transport of video over IP networks and network performance. This is followed, in section 3 with a discussion of the options for protocol development, with our design being outlined in section 4. Section 5 provides preliminary performance analysis of our system, demonstrating transmission of HDTV over a wide-area IP network, with section 6 outlining directions for further development. Finally, we summarize related work in section 7, and provide conclusions.
Get pdf download Experiments with Delivery of HDTV over IP Networks
Friday, February 13, 2009
Back to Basics: How to Set Up Your new HDTV
So you finally went out and bought a high-definition TV. Congratulations — you’ve joined a growing community of people who’ve switched to the new digital technology. Considering HDTV’s stunningly realistic, widescreen images and Dolby Digital sound, it’s easy to see why more and more home-entertainment enthusiasts would rather have an HDTV than an apprenticeship with Donald Trump.
But because HDTV is relatively new, a lot of people still aren’t aware even of the basics. For example, many don’t know that an “HD-ready” set (a.k.a. an HDTV monitor) needs to be connected to an outboard digital tuner before it can receive any highdefinition shows. Or that just because HDTVs “upconvert” standard TV signals for display in the higher-resolution 720p (progressive-scan) or 1080i (interlaced) format doesn’t mean the programs are true HDTV. To view honest-to-goodness high-def broadcasts, you need the proper equipment, properly connected, and you need a high-def signal. Before delving into the various connection options, let’s review some basic TV-setup considerations. Whether you go with a direct-view, rear-projection, or flat-panel model — or even a front projector — you’ll want to roughly match the screen size to the room so you won’t have to sit too close or too far away to see the whole picture in full detail. A general rule of thumb for comfortable viewing distance is about twice the diagonal screen size (1 1/2 times if you’re using a front projector). For example, if your set has a 40- inch screen measured diagonally, you should sit at least 6 1/2 feet away. Room lighting is also important. For daytime viewing, place the TV where windows can’t shine light onto the screen. And for best nighttime viewing, situate lamps so their reflections don’t appear on the screen.
Get pdf download Back to Basics: How to Set Up Your new HDTV
But because HDTV is relatively new, a lot of people still aren’t aware even of the basics. For example, many don’t know that an “HD-ready” set (a.k.a. an HDTV monitor) needs to be connected to an outboard digital tuner before it can receive any highdefinition shows. Or that just because HDTVs “upconvert” standard TV signals for display in the higher-resolution 720p (progressive-scan) or 1080i (interlaced) format doesn’t mean the programs are true HDTV. To view honest-to-goodness high-def broadcasts, you need the proper equipment, properly connected, and you need a high-def signal. Before delving into the various connection options, let’s review some basic TV-setup considerations. Whether you go with a direct-view, rear-projection, or flat-panel model — or even a front projector — you’ll want to roughly match the screen size to the room so you won’t have to sit too close or too far away to see the whole picture in full detail. A general rule of thumb for comfortable viewing distance is about twice the diagonal screen size (1 1/2 times if you’re using a front projector). For example, if your set has a 40- inch screen measured diagonally, you should sit at least 6 1/2 feet away. Room lighting is also important. For daytime viewing, place the TV where windows can’t shine light onto the screen. And for best nighttime viewing, situate lamps so their reflections don’t appear on the screen.
Get pdf download Back to Basics: How to Set Up Your new HDTV
Thursday, February 12, 2009
HDTV Accessories Guide
On February 17, 2009, the U.S. conversion from analog to digital television will be complete. HDTV, or high-definition television, is the best that digital television has to offer, including spectacular pictures and stunning surround sound that create the most realistic home entertainment experience available. To get true HD you need a high-definition program, delivered in HD, and displayed on an HDTV or HD monitor. Of course, this means that your accessories should be high quality as well, to ensure that you and your family realize the true benefits of HDTV. HDTV ACCESSORIES GUIDE
Rooftops and Rabbit Ears
If you rely on over-the-air reception with “rabbit ears” or a rooftop antenna, you should get even better reception in the digital world—and more channels to boot! DTV allows broadcasters to transmit several TV programs at once—called multicasting—and these programs are available right now to consumers who choose to receive their DTV signal over-the-air. A new generation of antennas that are optimized for digital and HD delivery are available at your local retailer. Check out www.AntennaWeb.org for information about the type of antenna that’s right for you. If Your World Is Flat
A growing number of consumers enjoy the flat-screen experience by purchasing HDTV sets that can hang on the wall, in the form of LCD or plasma displays. There are a variety of accessories to affix the set to the wall, along with racks and cabinets for the components. You may also choose a TV stand or console from companies that specialize in furniture for electronics. The newest electronics furniture is created to blend into your living room and can even be built into the wall to create more space. Don’t forget to refer to your owner’s manual to learn which specialized cleaning product works best for your TV.
Get pdf download HDTV Accessories Guide
Rooftops and Rabbit Ears
If you rely on over-the-air reception with “rabbit ears” or a rooftop antenna, you should get even better reception in the digital world—and more channels to boot! DTV allows broadcasters to transmit several TV programs at once—called multicasting—and these programs are available right now to consumers who choose to receive their DTV signal over-the-air. A new generation of antennas that are optimized for digital and HD delivery are available at your local retailer. Check out www.AntennaWeb.org for information about the type of antenna that’s right for you. If Your World Is Flat
A growing number of consumers enjoy the flat-screen experience by purchasing HDTV sets that can hang on the wall, in the form of LCD or plasma displays. There are a variety of accessories to affix the set to the wall, along with racks and cabinets for the components. You may also choose a TV stand or console from companies that specialize in furniture for electronics. The newest electronics furniture is created to blend into your living room and can even be built into the wall to create more space. Don’t forget to refer to your owner’s manual to learn which specialized cleaning product works best for your TV.
Get pdf download HDTV Accessories Guide
Wednesday, February 11, 2009
Using Cyclone III FPGAs for Clearer LCD HDTV Implementation
Today's liquid crystal display (LCD) technology has found a great application with high-definition TV (HDTV), but the challenge has been to achieve high resolution, which requires faster data rates. Accelerating data rates require special image processing algorithms to support faster moving video. The industry is confronted with a major problem: how do you implement these algorithms and get a product out to market first, and do it within a known power budget?
To compound the problem, designers need to determine how to reconfigure the image-processing algorithms when the hardware platform connects to different sizes of LCD panels. Larger LCD panels require faster data rates, so the challenge is how to adjust the data rate for the panel size.
Those challenges are easily managed with the new low-cost Cyclone® III FPGA family. Designers can apply image-processing algorithms in Cyclone III FPGAs to convert and map digital video signals onto the display panel. In addition, designers can take advantage of the Cyclone III FPGA's flexibility to reconfigure image-processing algorithms to increase the data rate for larger display panels. Thus, designers can develop a common hardware platform for all of their LCD panels, no matter the size.
Get pdf download Using Cyclone III FPGAs for Clearer LCD HDTV Implementation
To compound the problem, designers need to determine how to reconfigure the image-processing algorithms when the hardware platform connects to different sizes of LCD panels. Larger LCD panels require faster data rates, so the challenge is how to adjust the data rate for the panel size.
Those challenges are easily managed with the new low-cost Cyclone® III FPGA family. Designers can apply image-processing algorithms in Cyclone III FPGAs to convert and map digital video signals onto the display panel. In addition, designers can take advantage of the Cyclone III FPGA's flexibility to reconfigure image-processing algorithms to increase the data rate for larger display panels. Thus, designers can develop a common hardware platform for all of their LCD panels, no matter the size.
Get pdf download Using Cyclone III FPGAs for Clearer LCD HDTV Implementation
Tuesday, February 10, 2009
Image formats for HDTV
For several years, European broadcasters have been making programmes in high definition – often based upon co-production deals with the USA and Japan – using the 1920 x 1080 Common Image Format. However, European consumers are currently restricted to down-converted standard-definition versions of the original full-resolution HD content. This situation will soon change as more broadcasters offer HD services – in addition to the pioneering and ground-breaking start made by Euro1080.
This article offers an overview of HD scanning formats and advises European broadcasters not to go against the tide by introducing new production formats for HDTV. Broadcasting and television are now entering the era of High Definition (HD) – a transition as profound as the first introduction of television and the subsequent transition from black-and-white to colour television.
Unfortunately Europe lags behind other parts of the world, denying consumers the chance to view HD programmes in anything other than standard definition. HD has been with us since the early 1990s but those early European attempts unfortunately proved to be unsuccessful. So what has changed? The renewed interest can be attributed to several factors, the main ones being: the availability of high-resolution, large, flat-panel displays for consumer use; a track record of success in other parts of the world; desk-top high-definition production and editing; significantly reduced costs.
Before delving in to the details of scanning formats for high definition, it may be of interest to briefly review the origins of television and their respective picture formats. One of the early pioneers of television was John Logie Baird who introduced television in to the UK with a 30-line vertical mechanical scanning format (see Fig. 1). Despite refinements, it was of course inevitable that electronic scanning should become the mainstream. In the early 30s, the UK moved to 405 lines with a theoretical video bandwidth of 3 MHz. Germany, also an early pioneer of television
Get pdf download Image formats for HDTV
This article offers an overview of HD scanning formats and advises European broadcasters not to go against the tide by introducing new production formats for HDTV. Broadcasting and television are now entering the era of High Definition (HD) – a transition as profound as the first introduction of television and the subsequent transition from black-and-white to colour television.
Unfortunately Europe lags behind other parts of the world, denying consumers the chance to view HD programmes in anything other than standard definition. HD has been with us since the early 1990s but those early European attempts unfortunately proved to be unsuccessful. So what has changed? The renewed interest can be attributed to several factors, the main ones being: the availability of high-resolution, large, flat-panel displays for consumer use; a track record of success in other parts of the world; desk-top high-definition production and editing; significantly reduced costs.
Before delving in to the details of scanning formats for high definition, it may be of interest to briefly review the origins of television and their respective picture formats. One of the early pioneers of television was John Logie Baird who introduced television in to the UK with a 30-line vertical mechanical scanning format (see Fig. 1). Despite refinements, it was of course inevitable that electronic scanning should become the mainstream. In the early 30s, the UK moved to 405 lines with a theoretical video bandwidth of 3 MHz. Germany, also an early pioneer of television
Get pdf download Image formats for HDTV
Monday, February 9, 2009
hDtV (high Definition television) and video surveillance
The TV market is moving rapidly towards high-definition television, HDTV. This change brings truly remarkable improvements in image quality and color fidelity. HDTV provides up to five times higher resolution and twice the linear resolution compared with traditional, analog TV. Furthermore, HDTV comes with wide screen format and DVD-quality audio.
Growth in the consumer market for HDTV is impressive. In 2007 the HDTV household penetration in the U.S. was approximately 35%. According to estimates, 85% of all viewers will have an HDTV set at home by 2012. Already today, virtually all major television productions are HD. The two most important HDTV standards today are SMPTE 296M and SMPTE 274M, which are defined by the Society of Motion Picture and Television Engineers, SMPTE.
hDtV impact on video surveillance market
This development is now starting to have an impact on the video surveillance market, as customers ask for higher image quality standard. The possibility of clearer, sharper images is a long sought quality in the surveillance industry, i.e. in applications where objects are moving or accurate identification is vital. It can be argued that some of these requirements can be met with megapixel network cameras. However the notion of “megapixel” is not a recognized standard but rather an adaptation of the industry’s best practices and it refers specifically to the number of image sensor elements of the digital camera. With high resolution follows huge amounts of image data, which more often than not leads to compromises on frame rate. A megapixel camera alone is therefore not synonymous with high image quality. In contrast, a network camera that complies with any of the given HDTV standards is guaranteed to provide a certain resolution, frame rate and color fidelity, thereby ensuring video quality at all times.
Get pdf download hDtV (high Definition television) and video surveillance
Growth in the consumer market for HDTV is impressive. In 2007 the HDTV household penetration in the U.S. was approximately 35%. According to estimates, 85% of all viewers will have an HDTV set at home by 2012. Already today, virtually all major television productions are HD. The two most important HDTV standards today are SMPTE 296M and SMPTE 274M, which are defined by the Society of Motion Picture and Television Engineers, SMPTE.
hDtV impact on video surveillance market
This development is now starting to have an impact on the video surveillance market, as customers ask for higher image quality standard. The possibility of clearer, sharper images is a long sought quality in the surveillance industry, i.e. in applications where objects are moving or accurate identification is vital. It can be argued that some of these requirements can be met with megapixel network cameras. However the notion of “megapixel” is not a recognized standard but rather an adaptation of the industry’s best practices and it refers specifically to the number of image sensor elements of the digital camera. With high resolution follows huge amounts of image data, which more often than not leads to compromises on frame rate. A megapixel camera alone is therefore not synonymous with high image quality. In contrast, a network camera that complies with any of the given HDTV standards is guaranteed to provide a certain resolution, frame rate and color fidelity, thereby ensuring video quality at all times.
Get pdf download hDtV (high Definition television) and video surveillance
FireWire 2-Port PCIe DV Quick Installation Guide
The FireWire 2-Port PCIe DV is designed to add FireWire interface to your PCI Express-enabled system. Ulead VideoStudio video editing software is included for producing greeting cards, video e-mails, or home videos complete with attractive titles, effects, and background music.
Features and Benefits
• Compliant with PCI Express Base Specification 1.0a
• Compliant with IEEE 1394-1995, 1394a-2000 and OHCI 1.1 Standards
• PCI Express 1-lane (x1) FireWire adapter works with PCI Express slots with different lane width
• Installs in any available PCI Express slot and supports data transfer rates up to 400Mbps
• Spare enchanced low profile bracket is included to work in low profile chassis
• Two external 6-pin FireWire (1394a) ports to support DV camcorders, hard disk, removable drives, scanners, digital cameras and other FireWire audio/video devices
• Onboard power connector to provide reliable power source
• Ulead VideoStudio software provides exciting digital video capturing, editing and exporting capabilities.
Download pdf FireWire 2-Port PCIe DV Quick Installation Guide
Features and Benefits
• Compliant with PCI Express Base Specification 1.0a
• Compliant with IEEE 1394-1995, 1394a-2000 and OHCI 1.1 Standards
• PCI Express 1-lane (x1) FireWire adapter works with PCI Express slots with different lane width
• Installs in any available PCI Express slot and supports data transfer rates up to 400Mbps
• Spare enchanced low profile bracket is included to work in low profile chassis
• Two external 6-pin FireWire (1394a) ports to support DV camcorders, hard disk, removable drives, scanners, digital cameras and other FireWire audio/video devices
• Onboard power connector to provide reliable power source
• Ulead VideoStudio software provides exciting digital video capturing, editing and exporting capabilities.
Download pdf FireWire 2-Port PCIe DV Quick Installation Guide
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