HDMI has the advantages of small size, high transmission rate, wide transmission band width, good compatibility, and simultaneous transmission of uncompressed audio and video signals. HDMI not only increases the convenience of device indirect cable compared to traditional full analog interfaces, but also provides some hdMI-specific intelligent features, such as consumer electronic control CEC and extended display identification EDID. An HDMI cable consists of 19 cables. The HDMI system consists of an HDMI transmitter and a receiver. Devices that support HDMI interfaces typically have one to multiple interfaces, and each HDMI input to the device must comply with the specifications for the sender and each HDMI output must comply with the specifications for the receiver. Among the 19 HDMI cables, four pairs of differential transmission lines comprise the TMDS data transmission channel and clock channel. These four channels are used to transmit audio signals, video signals and auxiliary signals. HDMI also has VESA DDC, or Display Data Channel, which enables the exchange of status information between the signal source and the receiver for configuration so that the device outputs in the most appropriate manner.
Generally speaking: a COMPUTER with an HDMI output is an HDMI signal source, and a TV with an HDMI input is a receiver. When the computer and TV are connected through HDMI cable, the TV becomes the second screen of the computer.
Only need one HDMI cable, you can transmit video and audio signals at the same time, without the need for multiple wires to connect; At the same time, higher audio and video transmission quality can be achieved because there is no need for d/D or D/D conversion. For consumers, HDMI technology not only provides clear picture quality, but also greatly simplifies the installation of home theater systems by using the same cable for audio/video.
100% digital non-compression, provides up to 5Gbps data transmission bandwidth, can transmit uncompressed audio signals and high resolution video signals. At the same time, no digital/analog or analog/digital conversion before signal transmission can ensure the highest quality of audio and video signal transmission. No need to convert pure digital images and sounds directly from the source (can be seen and heard) video and audio signals from the output device to the display device to maintain the best digital quality of sound and images for HDTV, providing bandwidth support for 1080p and higher resolution; Support 3D function support sound return function; Support for multiple HD devices connected over twice the 1080I bandwidth provides YUV color space support with only one cable containing all HD video and audio in a single cable instead of up to 8 audio and 5 video lines reducing wiring complexity Automatic format smart * TV and AV The receiver can adjust the video source to receive the video format supported by the display device without consumer intervention, and output audio and video formats. The display device receives the video format and image aspect ratio from the source as-is. Such as "one-click playback" * these functions are provided by the manufacturer to implement HDMI. The full English name is "High Definition Multimedia Interface", which means High Definition Multimedia Interface in Chinese