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HDMI interface: digital audio and video transmission

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Author : PURPLELEC
Update time : 2023-12-26 11:21:03
  HDMI interface is a digital interface widely used in modern electronic equipment, which can transmit high-definition video and audio signals. The emergence of HDMI interfaces has made the connection between TVs, computers, game consoles and other devices more convenient and efficient. This article will introduce the principles, characteristics and applications of the HDMI interface.
  1. Principle of HDMI interface
  The HDMI interface is a digital interface that uses TMDS (Transition Minimized Differential Signaling) technology to transmit digital audio and video signals through differential signals. TMDS technology can effectively reduce interference and distortion in signal transmission, thereby ensuring the transmission quality of high-definition video and audio signals.
  The HDMI interface also supports HDCP (High-bandwidth Digital Content Protection) technology, which can encrypt and protect digital content to prevent piracy and illegal copying.
HDMI interface
  2. Characteristics of HDMI interface
  High-definition video and audio transmission: The HDMI interface can transmit high-definition video and audio signals, supporting multiple resolutions such as 1080P and 4K.
  Digital signal transmission: The HDMI interface uses digital signal transmission, which can avoid interference and distortion in ana-log signal transmission.
  Single-line transmission: The HDMI interface only requires one cable to transmit video and audio signals, simplifying the connection between devices.
  HDCP encryption: The HDMI interface supports HDCP technology, which can encrypt and protect digital content.
  Various applications: HDMI interfaces are widely used in connections between TVs, computers, game consoles, projectors and other devices.
  3. Application of HDMI interface
  HDMI interface is widely used to connect various electronic devices, such as:
  Connection between TV and TV box: Through the HDMI interface, the high-definition video and audio signals of the TV box can be transmitted to the TV to realize high-definition audio and video playback.
  Connection between computer and monitor: Through the HDMI interface, the computer's high-definition video and audio signals can be transmitted to the monitor to achieve high-definition display.
  Connection between game console and TV: Through the HDMI interface, the high-definition video and audio signals of the game console can be transmitted to the TV to achieve a high-definition gaming experience.
  Connection between the projector and computer: Through the HDMI interface, the computer's high-definition video and audio signals can be transmitted to the projector to achieve high-definition projection.