Content navigation:
DVI interface with the HDMI interface description <br> video communication as a user-oriented real-time two-way communication interactive video will still be transmitted over a video conference terminal through the video signal reproducing apparatus for display to the user device (LCD / Plasma TV / Display devices such as rear projection TVs/large-screen projectors, etc., so the choice of video interfaces, especially the choice of interfaces for high-definition video communication that we have developed so far, is especially important. This process should include HD cameras and video terminals. Choice of connection interface, selection of connection interface for high definition video terminal and high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
Video communication as a real-time two-way video interactive communication method for users, ultimately to restore the video signal transmitted by the video conference terminal device to the user-oriented display device (LCD TV / plasma TV / rear projection TV / large screen projector Above the display device), so the choice of video interface, especially the choice of interface for high-definition video communication that we are currently developing is particularly important. This process should include the selection of the connection interface between HD camera and video terminal, high definition video terminal. Choice of connection interface with high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
Video communication as a real-time two-way video interactive communication method for users, ultimately to restore the video signal transmitted by the video conference terminal device to the user-oriented display device (LCD TV / plasma TV / rear projection TV / large screen projector Above the display device), so the choice of video interface, especially the choice of interface for high-definition video communication that we are currently developing is particularly important. This process should include the selection of the connection interface between HD camera and video terminal, high definition video terminal. Choice of connection interface with high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
DVI interface with the HDMI interface description <br> video communication as a user-oriented real-time two-way communication interactive video will still be transmitted over a video conference terminal through the video signal reproducing apparatus for display to the user device (LCD / Plasma TV / Display devices such as rear projection TVs/large-screen projectors, etc., so the choice of video interfaces, especially the choice of interfaces for high-definition video communication that we have developed so far, is especially important. This process should include HD cameras and video terminals. Choice of connection interface, selection of connection interface for high definition video terminal and high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
Video communication as a real-time two-way video interactive communication method for users, ultimately to restore the video signal transmitted by the video conference terminal device to the user-oriented display device (LCD TV / plasma TV / rear projection TV / large screen projector Above the display device), so the choice of video interface, especially the choice of interface for high-definition video communication that we are currently developing is particularly important. This process should include the selection of the connection interface between HD camera and video terminal, high definition video terminal. Choice of connection interface with high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
Video communication as a real-time two-way video interactive communication method for users, ultimately to restore the video signal transmitted by the video conference terminal device to the user-oriented display device (LCD TV / plasma TV / rear projection TV / large screen projector Above the display device), so the choice of video interface, especially the choice of interface for high-definition video communication that we are currently developing is particularly important. This process should include the selection of the connection interface between HD camera and video terminal, high definition video terminal. Choice of connection interface with high definition display device.
As a video application mode, high-definition video conferencing should be fully adapted to existing digital high-definition video compression; transmission communication and interface specifications. At present, high-definition display external communication interface procedures mainly include the following: DVI (digital video interface); HDMI (high-definition multimedia interface): standard terminal; IEEE 1394 terminal: or "hot line". There is also a wide-ranging HD-SDI interface for broadcasting and television applications, which is not the main content here.
DVI interface: The DVI interface standard is a standard introduced by the Digital Display Working Group in 1999. The main members include HP, IBM, Intel, NEC and other manufacturers. At present, consumer products using DVI interfaces are distributed throughout high-definition display devices; flat-panel TVs; graphics cards and other devices. The original purpose of the design was to achieve digital connection between the personal PC and the liquid crystal display device, thereby realizing the digitization of communication between devices. Currently, the most commonly used technology between the video disc playback device (DVD) and the flat panel display device is used. field. At present, most of the computer motherboards of medium and high-end personal PCs have been equipped with DVI signal output interfaces. It can be seen that the DVI interface is gradually being widely used.
The DVI interface is a 24-bit digital RGB interface technology. In a single DVI connection channel, there are three pairs of low-voltage differential signal paths for respectively transmitting red, green, and blue chrominance components and synchronization signals. In addition to this, there is a fourth pair of signal channels. Used to transmit the clock signal of each pixel. Each RGB component signal data having a length of 8 digits is transmitted in a serial bit stream manner. The maximum transfer rate can reach 1.65Gbps per second. Therefore, the maximum transfer rate of a single DVI connection channel can reach 4.95 Gbit/s. This transmission speed is very fast and can satisfy a large video data transmission. Under this bandwidth, a single DVI connection channel can easily perform high-definition video signal transmission in all formats defined by ATSC in the uncompressed data, and high-quality display images can be used. Up to 1600 × 1200 pixels (UXGA), and even meet the bandwidth requirements of 1080p / 60 (that is, 1920 × 1080 progressive, refresh rate of 60 Hz) image transmission. At the same time, it also greatly meets the transmission requirements of 720P (1280×720 progressive) signals required by high-definition video conferencing in the future. 1080p/60 is currently the high definition video compression; the highest format of the communication format. If a dual-channel DVI interface is used, the maximum transmission rate can reach 9.9 Gbps (the available bandwidth is 7.92 Gbps), and the display image can reach a 2048 × 1536 image (QXGA) picture with a refresh rate of 60 Hz. It can be said that we will satisfy our pursuit of high-definition images for a long time to come. At the same time, the DVI specification not only allows the transmission of sync and digital video signals, but also the transmission of analog RGB signals. But at the same time its cable length problem does limit its application in some areas, although the problem can be solved by an external signal amplification device, but the signal has gone through an extra link.
Another interface is currently recognized as the most advanced multimedia communication interface - HDMI. In April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI organization to begin developing new standards for digital video/audio communication. At the end of 2002, the High-definition Digital Multimedia Interface HDMI 1.0 standard was promulgated. HDMI is also the first digital interface to integrate uncompressed high-definition video and multi-channel audio and intelligent format and command data in a single digital interface. Later, HDMI version 1.2 was released, which greatly improved the compatibility of the system.
In May 2006, the HDMI 1.3 version was officially confirmed. This version mainly improved the transmission bandwidth of this interface. The number of colors can be increased from 1 million to 1 billion. Even in monochrome images, the details will be greatly enriched. And it has been recognized by the IEC. So far, more than 250 manufacturers and 470 different types of products have adopted the HDMI interface. Therefore, we should be able to clearly understand that it is necessary for our high-definition video communication. Interface to enhance the interface characteristics of our products. There are no products on the video conferencing product that meet this interface specification. The most important point is that HDMI can transmit audio at the same time. HDMI's audio processing capabilities are sufficient for future needs, and backwards compatible, not only to transmit compressed multi-channel digital audio signals such as Dolby Digital and DTS, which we already know and love, but also to transmit uncompressed Digital audio signal. In the latter case, HDMI supports as many as eight channels, with a quantization accuracy of up to 24 bits and a sampling frequency of up to 192 kHz. These performance metrics can also be achieved simultaneously for high-definition video program delivery. HDMI is used for audio data transmission during the reverse blanking period of the video signal, so it does not occupy the available video transmission bandwidth, and is fully backward compatible with early DVI products that do not take audio transmission into account.
Different from traditional FR-4 (plastic), ceramic materials have good high-frequency performance and electrical properties, and have properties that organic substrates do not have, such as high thermal conductivity, excellent chemical stability and thermal stability. Ideal packaging material for large scale integrated circuits and power electronic modules.
Ceramic PCB Manufacturer,Ceramic PCB Board,Ceramic Circuit Board,Ceramic Printed Circuit Board,How to Manufacture PCB
Huizhou Liandajin Electronic Co., Ltd , https://www.ldjcircuitboard.com