Acoustic-video multi-way restoring device for monitoring trade

Abstract

The disclosed device comprises following parts: input end for transferring control signals to the input end of communication socket, sending 8 channel signal in high frequency to an input end of high frequency head; output end of the communication socket is connected to the input end of 232 - 485 conversion circuit; two output ends of the conversion circuit are connected to the input end of communication display circuit and the end of CPU respectively; output ends of CPU are connected to the ends of memory circuit and high frequency head respectively; video output end of the high frequency head is connected to input end of the drive circuit; output ends of audio / video signal from the high frequency head are connected to input ends of video monitoring circuit for selecting one from eight and audio monitoring circuit for selecting one from eight. The invention realizes signal inputs in multiple channels in high frequency and audio / video output in multiple channels, providing features of friendly interface.

Description

Technical field [0001] The invention belongs to the technical field of demodulating high-frequency signals in the monitoring industry, and particularly relates to the structural design of an audio and video multiplex restoration device used in the monitoring industry. It is suitable for visual electronic monitoring system and related monitoring system. Background technique [0002] In the surveillance industry, video signals and audio signals from multiple surveillance points need to be sent back to the control room. If these signals are transmitted without special processing, it will inevitably lead to a large number of transmission lines. For example, a monitoring point requires two transmission lines (video signal, audio signal), if it is N monitoring points, 2×N transmission lines are needed. This is not only The cost is extremely high, and it is difficult to implement during engineering installation. [0003] In order to solve this problem, the generally adopted method is to...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing audio and video restoration devices are one-way restoration. In the monitoring industry, it is generally used to send high-frequency signals of multiple partitions and multiple channels (one monitoring point occupies one channel) to the control room at the same time. If one partition or one channel It is extremely inconvenient to use a restoring device during engineering installation and use

There are also multi-channel audio and video restoration devices, such as "4-way detector" and "9-way manual restorer" designed by the inventor in the past, or not manually, but the interface is not friendly in terms of computer control, and in The setting, memory, and switching are not perfect, such as not being able to switch arbitrarily, the number of restoration channels is not enough, the quality of the restored audio and video signals is not ideal, etc. Some devices cannot be memorized, the reliability is not good, and some devices are expensive. High cannot make customers fully accept

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