Receiver capable of automatically regulating and controlling twisted-pair line transmission video signal

Abstract

The invention discloses a receiver for automatically adjusting and controlling video signals transmitted by a twisted pair wire. The receiver comprises a balanced type input unit receiving balanced type video signals, a video signal amplifying unit making the amplifying processing of the balanced type video signals, an unit for the digitized processing of the balanced type video signals, a central processing unit which synchronously separates, analyzes and calculates the digitized signal data and then outputs the control signals, a high-frequency compensation unit for carrying out high-frequency compensation processing of the signals, a gain control unit for making the gain control processing of the signals and an output unit for outputting non-balanced type output video signals. The receiver has the advantages of being capable of automatically analyzing and calculating the outputted video signals, automatically adjusting and controlling the compensation mode and the compensation quantity of the signals, realizing the automatic setting of the twisted pair wire transmission video signal receiver, and improving the consistency of the output terminal signals in the multi-channle transmission.

Description

technical field [0001] The invention relates to a video signal receiver, especially to a wired video transmission equipment used in image monitoring and building image intercom, which uses a twisted pair to transmit video signals, and can automatically adjust and control the receiver to compensate for video signal attenuation. Background technique [0002] In the long-distance video signal transmission, using twisted-pair wires to transmit video signals has the advantages of convenient construction and economy, and can also achieve long-distance transmission. Now more and more applications use twisted pair as the transmission medium of video signals, and the corresponding twisted pair video signal transmission equipment is also widely used. [0003] However, currently used twisted pair wires are used for video signal transmission equipment, which uses manual control to perform gain and segmental high-frequency compensation for the attenuation caused by long-distance transmis...

AI Technical Summary

Problems solved by technology

[0005] 1. In engineering construction, installation conditions and construction environments vary greatly, manual setting and debugging are very troublesome, and the workload is heavy

Moreover, due to various factors of the operator, the twisted pair signal transmission equipment may not be able to be debugged in the best state, especially in the case of centralized monitoring of multiplex transmission, it is difficult to obtain images of consistent quality through subjective observation and manual adjustment;

[0006] 2. When the signal is transmitted over a long distance and an active twisted pair signal transmitter is used, the joint debugging between the output terminal and the input terminal of the receiver is very difficult

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