Cable television digital set-top box video signal and audio signal wireless transmission device
A digital set-top box, video signal technology, applied in the direction of image communication, electrical components, selective content distribution, etc., can solve the problems of easy connection failure, not too far away, inconvenient equipment movement, etc., and achieve good research and application development prospects , Solve connection failures and improve flexibility
Inactive Publication Date: 2017-04-26
SHENZHEN UNIV
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Problems solved by technology
[0003] The object of the present invention is to provide a wireless transmission device for video signals and audio signals of a cable TV digital set-top box, which is used to solve the problem that the signal transmission between the cable TV digital set-top box and the TV display terminal is limited to HDMI cables or AV cables. The problem of attenuation loss solves the shortcoming that the distance between the cable TV digital set-top box and the TV display terminal cannot be too far, and solves the shortcoming that the daily movement of the equipment is inconvenient and prone to connection failures due to the use of cable connection. The transmission method improves the quality of signal transmission and improves flexibility, reliability and stability
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[0018] During work, described transmitting module power supply POWER 11, provides stable power supply to all electrical devices of transmitting module 19, and transmitting module power supply POWER 11 has three-stage electromagnetic filter, first-stage electromagnetic filter, second-stage electromagnetic filter and The third-stage electromagnetic filter is connected in series to filter the high-frequency harmonics of the input current, reduce the influence of power supply electromagnetic interference on the circuit, and provide stable power supply to the transmitting module 19; the cable TV digital set-top box 10 is connected to the input interface of the transmitting module HDMI IN 12 is connected, and the signal of the signal source is transmitted to the transmitting module processor 632TX 14 through the transmitting module input interface HDMI IN 12; the transmitting module processor 632TX 14 will input the video signal and audio frequency through the transmitting module inpu...
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The invention is to provide a cable television digital set-top box video signal and audio signal wireless transmission device to solve the problem of attenuation loss since signal transmission between a cable television digital set-top box and a television display terminal is limited by HDMI cable or AV cable connection, solve the defect that distance between the cable television digital set-top box and the television display terminal cannot be too far and solve the problems that it is not convenient for a device to move daily due to cable connection and it is easy to cause connection fault. Through a millimeter-wave-band 60 GHz frequency-point wireless transmission mode, signal transmission quality is improved, and flexibility, reliability and stability are improved.
Description
technical field [0001] The invention relates to the technical field of cable TV digital set-top boxes, in particular to a wireless transmission device for video signals and audio signals of a cable TV digital set-top box. Background technique [0002] Cable TV digital set-top boxes are widely used in cable TV networks. After receiving digital TV signals, they process and output video and audio signals, and connect to TV display terminals through HDMI cables or AV cables to restore video and audio presentations. Due to the attenuation loss of HDMI cables or AV cables, etc., the distance between the cable TV digital set-top box and the TV display terminal should not be too far, generally within 5 meters, and the use of wired cables makes daily movement of the equipment inconvenient and easy. malfunction. Contents of the invention [0003] The purpose of the present invention is to provide a wireless transmission device for video signals and audio signals of a cable TV digit...
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IPC IPC(8): H04N21/426H04N21/4363
CPCH04N21/426H04N21/43637
Inventor 陈宝康
Owner SHENZHEN UNIV