Embedded real-time network video monitoring system

Abstract

The invention discloses an embedded real-time network video monitoring system. An audio coder / decoder and a video coder / decoder are used for performing analog-digital conversion to an audio signal and a video signal from an audio and video input module, and the audio signal and the video signal are transmitted to a multimedia DSP processor after the analog-digital conversion. The multimedia DSP processor handles the audio and the video digital signals; after the handling, on the one hand, handling results are memorized in memory equipment, and on the other hand, the handling results are transmitted to corresponding peripheral equipment through a peripheral interface. A CPLD logical controller is respectively connected with the audio and the video coders / decoders, the multimedia DSP processor and the memory equipment so as to realize logical control of the system. The invention has the characteristics of a digital video-audio recorder (DVR) and a digital video-audio server (DVS), and can not only work independently and locally, but also connect the network to form a strong safety-monitoring network. The system has the advantages of high handling speed, rich functional interface, strong expansibility and miniaturized structure, and can be extensively applied to the safety precautions in the fields of bank, telecom, electric power, traffic, water facilities and the like.

Description

Technical field [0001] The invention relates to the technical field of video monitoring, in particular to an embedded real-time network video monitoring system. Background technique [0002] Digital video technology is making profound changes in our video experience, transmission and interaction methods, and it has begun to enter the fields of automobiles, computers, mobile phones, and networks. Therefore, digital video technology will undoubtedly reshape the face of the entire electronics industry. In the past, engineers had very limited choices when implementing digital video. Hard-wired and ASIC-based solutions always limited the use, function, and adaptability of devices; although dedicated devices are slightly more flexible than ASICs, , In the face of ever-changing multimedia standards and applications, their utility is still limited; [0003] To use a general DSP chip for digital video design, the video data needs to be transmitted to the FIFO through an external data bus,...

AI Technical Summary

Problems solved by technology

This design method is more complicated in hardware implementation, it needs to add FIFO chips, and it also increases the complexity of the connection with the DSP external bus

In addition, there are many kinds of video formats. When DSP treats video signals as ordinary data, various practical problems will arise, such as signal format, synchronization and other issues.

[0004] Most of the current video surveillance systems have one channel of audio and video, and the video and audio decoders use different chips, which have a single function, occupy a large PCB area, consume high power consumption, and have poor system stability, difficulty in debugging, and high cost. Difficult to develop and produce

Images