Power supply system of SDI (Serial Digital Interface) mode and power supply method

Abstract

The invention relates to a power supply system of an SDI (Serial Digital Interface) mode and a power supply method. The system comprises a control module and an SDI power supply module connected to the control module, wherein the SDI power supply module detects voltage and current signals input by connected video input equipment and transmits to the control module, so that the control module controls a working mode of the SDI power supply module according to the voltage and current signals detected by the detection module; the SDI power supply module comprises a power supply switch, a power switch, a first power source, a second power source and a first resistor, wherein one end of the power supply switch is respectively connected to the first power source and the second power source through the power switch, and the other end of the power supply switch is connected to the first resistor; and the SDI power supply module detects the voltage and current signals input by the video input equipment through the first resistor. According to the system and the method, wiring of video monitoring can be reduced, camera power supply and video signal transmission can be realized by one coaxial cable, the reliability of system work is improved and layout and wiring of the system are simplified.

Description

technical field [0001] The invention relates to a power supply system and a power supply method in SDI mode. Background technique [0002] At present, in the occasions where real-time detection requirements are high, the method of analog video is still used to obtain video images, but such detection methods can no longer meet the requirements of high-definition and high-comprehension visual detection. In order to be able to perform high-definition video Transmission, now commonly used means is parallel data transmission, such as CAMERALink, DVI or HDMI, these transmission methods need to re-improved the existing project, or the whole project needs to be redesigned, the investment in project cost or system transformation is relatively large are so large that implementations of advanced HD video detection have been slow. [0003] Now for the detection of non-real-time occasions, network communication is mainly used. In order to reduce the power supply problem of wiring, the v...

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Problems solved by technology

[0002] At present, in the occasions where real-time detection requirements are high, the method of analog video is still used to obtain video images, but such detection methods can no longer meet the requirements of high-definition and high-comprehension visual detection. In order to be able to perform high-definition video Transmission, now commonly used means is parallel data transmission, such as CAMERALink, DVI or HDMI, these transmission methods need to re-improved the existing project, or the whole project needs to be redesigned, the investment in project cost or system transformation is relatively large large enough to be slow to advance the implementation of HD video detection

[0003] Now for the detection of non-real-time occasions, network communication is mainly used. In order to reduce the power supply problem of wiring, the voltage signal is transmitted during the network communication process at the same time, but this design can transmit images, but the network transmission needs to compress the video or need to follow the network protocol. Transmission, which affects the clarity of the image and the real-time transmission requirements of the video

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