Advantages of HDMI display interface
With the popularity of the digital process, we can enjoy an increasing variety of digital products, and in the enjoyment of these digital products to bring us happiness, but also to put forward higher requirements for video and audio, digital high-definition video products and 7.1 audio systems, etc. are gradually coming to us. At the same time a new standard of revolutionary significance also accompanied the birth of these new devices and the emergence of the following to introduce this new standard - HDMI.
I. The growth of digital TV equipment
With the continuous growth of the digital industry and users' expectations for high-definition television, which has led to a rapid increase in sales of digital TVs, and also led to the rapid growth of digital peripheral devices in the home. Whenever consumers purchase new digital TV equipment, they may also purchase other digital devices such as digital cameras, DVD recorders, etc., to transmit or store quality digital content. How to ensure that digital TV and home theater equipment have the function of interconnection, so that people can enjoy a better digital life, is a major issue in the development of digital TV at present. In recent contacts with audio and video equipment, many have been equipped with HDMI interface, which has become a new generation of high-definition TV necessary interface.
Second, the characteristics of high-definition multimedia interface
HDMI is based on DVI technology, which can be seen as a strengthening and extension of DVI technology, the two can be compatible. HDMI can transmit uncompressed high-resolution video and multi-channel audio data in digital form while ensuring high quality. HDMI can meet the resolution of 1080p, and supports all HDTV and other standards, but also supports DVD Audio and other most Advanced digital audio formats, support for multi-channel 96kHz or stereo 192kHz digital audio delivery, and only one HDMI cable connection can be used to dispense with digital audio wiring. At the same time the HDMI standard has additional expansion space, it allows the application of later upgrades in the format of audio or video. Compared to DVI, the HDMI interface is smaller and supports simultaneous transmission of audio and video signals. However, the length of each DVI cable cannot exceed 8 meters or the quality of the display will be affected, while HDMI basically does not require a limit on the length of the cable. HDMI can be used with High-bandwidth Digital Content Protection (HDCP) to prevent unauthorized copying of copyrighted audio and video content. The protection mechanism HDMI specifications include two types of connectors for consumer electronics and PCs, so it is believed that HDMI technology will soon be widely adopted by the PC industry. The digital audio/video interface HDMI will replace the current DVI interface and become the standard for the next generation of digital interfaces.
HDMI is compatible with DVI in terms of pin design, but only in a different package form. In comparison to DVD, it adds support for HDCP and is capable of transmitting digital audio signals, while also offering the option of more superior DDC.
The HDMI interface can support transmission rates of up to 5Gbps, which is perfectly fine for a 1080p video and an 8-channel audio signal. It can transmit up to 15 meters away, and since the data required for a 1080p video and 8-channel audio signal is less than 4GB/s, HDMI can easily accomplish this, and there will be plenty of headroom left over. This allows it to connect a DVD player, receiver and PRR with a single cable respectively.
HDMI is an uncompressed electronic product interface standard that allows high-definition video signals and multi-channel audio signals to be fused onto a single cable, allowing home appliance manufacturers to design digital TVs that will be compatible with future digital devices in the years to come, and adding support for the content formats needed for digital.
Third, the future of high-definition display interfaces
HDMI is a standard with a wide range of uses that can successfully solve many of the problems plaguing the consumer electronics industry. HDMI standard is the use of TMDS technology, its audio and video content transmission bandwidth of several gigabits per second, and with Intel's HDCP content protection technology, for each member of the consumer electronics industry chain, the HDMI standard provides the ideal solution for them, resulting in The result is a neat and beautiful assembly of cables and connectors that the average consumer will find easy to use. On the other hand, according to the DVD Copy Control Association (CCA), only DVD players equipped with DVI-HDCP or HDMI-HDCP output terminals can play CSS-protected content with picture quality higher than 480p/576p. In addition, Cable Labs, in its Open Cable program, requires that all high-definition digital TV boxes (HD-STBs) must have the above-mentioned features. STBs) must have the two output terminals mentioned above. On January 19, 2005, EICTA, an organization representing the European ICT and consumer electronics industry, announced in Brussels that any display device can only receive high-resolution content through the HDMI or DVI digital interface. transmission, and its HDMI or DVI input terminal must support HDCP before it can be labeled with the "HD Ready" logo. It is with these provisions to further consolidate the position of HDMI in the market.
HDMI interface on digital devices
With governments' strong promotion and support for HDTV, HD DVD, and digital TV and digital content industries, the digital AV industry is gradually becoming a new growth driver in the global IT industry. As an important bridge between display devices and audio-visual equipment, the HDMI interface will replace the DVI interface as the standard for a new generation of digital audio-visual equipment.
With the gradual spread of high-tech digital equipment, more digital devices have entered millions of homes, followed by about how to better associate these devices so that they can better play their own advantages. The technology we introduced above fundamentally solves the problem of data transmission between devices, which is an important issue that hinders the potential of the devices, the solution to this problem, technically breaking the bottleneck of transmission, better connect each digital device, thus giving users a new visual and auditory experience.
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