Analog video signal format determination system and method and related devices

Abstract

The invention discloses an analog video signal format determination system and method and related devices, which are used for simplifying the matching process of analog video signal format types and improving the compatibility of a receiving device. The analog video signal format determination system comprises a video signal acquisition device and a plurality of video signal receiving devices, wherein each video signal receiving device is used for generating carrier signals with scheduled frequency when having a high-definition analog video signal decoding capacity, and each video signal receiving device is also used for outputting the carrier signals with the scheduled frequency to the video signal acquisition device; and the video signal acquisition device is used for determining whether to receive the carrier signals with the scheduled frequency sent by the video signal receiving devices; and the video signal acquisition device is also used for determining whether the video signal receiving devices support the high-definition analog video signal format when receiving the carrier signals with the scheduled frequency sent by the video signal receiving devices, otherwise, the video signal acquisition device determines that the video signal receiving devices do not support the high-definition analog video signal format.

Description

technical field [0001] The invention relates to the technical field of video surveillance, in particular to a system, method and related equipment for determining the format of an analog video signal. Background technique [0002] In the technical field of video surveillance, a video surveillance system usually includes a front-end video signal acquisition device and a rear-end video signal receiving device. After the video signal acquisition device collects the video signal, after encoding and compression processing, the video signal is transmitted to the video signal receiving device, and the video signal receiving device decodes and decompresses the received video signal for display. [0003] Among them, video signal receiving equipment includes hard disk recorders, network video encoders, optical transceivers, etc. For traditional CVBS analog video signals, the video analog-to-digital conversion chips used by these devices can Determine the format of the analog video si...

AI Technical Summary

Problems solved by technology

However, because the sending chip at the end of the existing video signal acquisition device (for example, an analog camera) cannot obtain the video signal format type supported by the receiving device, it is impossible to know whether the receiving device supports the 1280H high-definition analog video signal format. If the video signal acquisition device Use 1280H high-definition analog video signal format to transmit the collected analog video signal, but the receiving device at the back end does not support high-definition analog video signal decoding technology, there will be abnormal situations such as no image, blurred screen, etc.

[0005] In order to solve the above problems, in the prior art, manual matching is usually used to match the format type of the analog video signal transmitted by the front-end video signal acquisition device. This process is not only complicated to operate, but also reduces the compatibility of the video signal receiving device. sex

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