HDMI (High Definition Multimedia Interface) conversion system and method

Abstract

The invention relates to an HDMI (High Definition Multimedia Interface) conversion system and method. The system comprises a receiving end, a network line and a sending end, wherein the receiving end is connected to the sending end through the network line. The system is characterized in that the receiving end and the sending end respectively include screening cans, HDMI interfaces, network line interfaces, printed circuit boards, a sending signal conversion circuit and a receiving signal conversion circuit, wherein the HDMI interfaces and the network line interfaces are respectively arranged on both ends of the screening cans, and two ends of the network line are respectively connected to the network line interface of the receiving end and the network line interface of the sending end; the printed circuit boards are arranged in the screening cans between the HDMI interfaces and the network line interfaces; the sending signal conversion circuit is printed on the printed circuit board of the sending end and is used for converting an HDMI signal to a signal transmitted on the network line; and the receiving signal conversion circuit is printed on the printed circuit board of the receiving end and is used for converting the signal transmitted on the network line to the HDMI signal. According to the HDMI conversion system and method, the signal transmission distance is prolonged, the transmission performance is improved and the cost is extremely low to be beneficial to large-area market popularization.

Description

technical field [0001] The invention belongs to the field of television accessories, and in particular relates to an HDMI conversion system and method. Background technique [0002] In order to realize long-distance transmission of HDMI signals, network cables are generally used as the transmission medium. Compared with the long HDMI cable, the network cable is simple, convenient, low cost, wide circulation, universal, easy to obtain, and other advantages. [0003] HDMI has 19 pins, while the network cable interface has 8 pins. If you want the HDMI signal to be transmitted in the network cable intact, then you must have 2 network cables to transmit the HDMI signal. However, in actual homes and engineering wiring, there is generally only one network cable, so this transmission method is inconvenient and impractical. [0004] The HDMI signal is transmitted in a single network cable. Currently, there are two main solutions: [0005] 1. Package the HDMI signal into a TCP / IP ...

AI Technical Summary

Problems solved by technology

[0007] 1) Because the HDMI signal is a high-definition digital signal, in this case, the signal data is packaged and unpacked, which will inevitably cause signal delay in the case of long distances

[0008] 2) In addition, in order to realize the packaging and unpacking of signal data, it must be processed by a large number of chips and electronic components, and the cost is extremely high

[0012] 1) The decryption of the HDMI signal here violates the provisions of the HDMI Association and the HDCP (High-bandwidth Digital Content Protection Technology) agreement, within the scope of the law: use, application area, scope, very limited

[0013] 2) There are many types of TVs on the market. In this case, the signal source (such as a player) cannot read the EDID (Extended Display Identification Data) signal of the TV (or monitor), so it cannot be based on the EDID (Extended Display Identification Data) of the TV. , to output the best audio and video signals, which may cause the image to be off-screen, unable to fill the screen, image stretching, etc.

[0015] 4) The cost of this product is second only to TCP / IP transmission, and the cost is also high

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