Method for monitoring network audio and video, and network hard disk videocorder using the method

Abstract

The invention relates to a monitoring method of network audio and video and a net-hard-disk video recorder using the method. The method includes the steps: step one: a signal collection device is provided; step two: a multi-channel real-time monitoring data provided by a collection device of signals converted by a video and audio processing chip is provided; step three: the converted multi-channel monitoring data is transmitted to a DSP chip; step four: the DSP chip carries out respective H. 264 compression and coding of the received multi-channel monitoring data; step five: the remote transmission of the compressed and coded data is carried out through an Ethernet interface, a WiFi interface or an ADSL wan interface; step six: the compressed and coded data is locally stored; step seven: the compressed and coded data is locally played. The net-hard-disk video recorder comprises a DSP chip, video and audio processing chips which are respectively and electrically connected with the DSP chip, a net interface module and a function extension module. By adopting suitable video and audio processing chips and DSP chips, the invention simplifies hardware structures, reduces the cost and is high in stability and less in energy consumption. At the same time, the invention realizes the double implementation of local storage and remote transmission.

Description

technical field [0001] The invention relates to the monitoring field, in particular to a network audio and video monitoring method and a network hard disk video recorder using the method. Background technique [0002] With the progress of society, digitalization, networking and intelligence of video surveillance have become a development trend. The digital monitoring system has gradually entered the stage of large-scale commercial application, and the video monitoring system has also experienced three eras. [0003] First Generation: The Analog Era. Video is transmitted in analog over coaxial cable and processed analog by the control panel. [0004] The second generation: the semi-digital age. The video is transmitted by coaxial cable in analog mode, and digitally processed and stored by the multimedia control host or hard disk video recorder (DVR). [0005] The third generation: the all-digital age. Based on the network, with digital video processing technology as the ...

AI Technical Summary

Problems solved by technology

[0007] Yet existing video monitoring method and the network video server using this method all need to be improved

For example, network video servers often use multiple media processing chips or ASIC hardware encoding chips plus some main control chips with weak processing capabilities to construct products with equivalent functions. Large size, high cost, weak module coordination between chips, poor stability and high power consumption

On the other hand, it is difficult to realize the dual realization of remote control and local control in the field of monitoring

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