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Network video monitoring system based on resolution ratio grading transmission

A technology of network video monitoring and hierarchical transmission, which is applied in the direction of closed-circuit television systems, televisions, electrical components, etc., and can solve the problems of unfavorable wide application, cumbersome network wiring, and high cost

Inactive Publication Date: 2011-01-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution can obtain high-resolution surveillance video, it needs to use optical fiber network, the network wiring is cumbersome, and the cost is high, which is not conducive to large-scale wide application
[0008] It can be seen from the above that how to better solve the contradiction between the acquisition of high-definition video surveillance images and the limited network transmission bandwidth in the existing network video surveillance system is still a problem to be solved at present.

Method used

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  • Network video monitoring system based on resolution ratio grading transmission
  • Network video monitoring system based on resolution ratio grading transmission
  • Network video monitoring system based on resolution ratio grading transmission

Examples

Experimental program
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Embodiment 1

[0030]In this embodiment, the camera adopts a 1080P CMOS high-definition camera; the collection control unit includes: a video decoding chip TVP5158 for converting the collected analog video into digital video, and a video coding chip supporting multiple outputs connected with the video decoding chip TVP5158 signal TMS320DM6467, SATA large-capacity hard disk, USB 2.0 interface, and general-purpose I / O interface (GPIO) respectively connected to the video encoding chip TMS320DM6467 signal; the network access device is an RJ45 interface, which is connected to Ethernet through this interface; Big screen TV wall. The structure of the whole system is attached figure 2 shown.

[0031] The video encoding chip TMS320DM6467 used in this embodiment is a DSP-based high-performance Davinci multi-core processor produced by TI. The chip adopts high-definition video / image coprocessor (HD-VICP), conversion engine and target video port interface, and performs high-definition encoding, decodi...

Embodiment 2

[0040] In this embodiment, the camera adopts a 720P CCD high-definition camera; the acquisition control unit includes two parallel video codec modules, and each video codec module includes: a video decoder chip TVP5146 for converting the analog video collected into digital video, The video encoding chip TMS320DM6446 which only has a single output function is connected with the video decoding chip TVP5146. One of the video codec modules is connected with a large SATA hard disk, USB2.0 interface and GPIO, and realizes high-definition video (D4 (720P)) output through MPEG-4 codec, and simultaneously stores high-definition video in a large SATA hard disk; the other video codec The decoding module is used to generate normal-definition video, and realize the output of normal-definition video (D1 (480i)) through H.264 codec. In order to be able to switch the output video stream in real time through the remote control of the monitoring center, the output two-way video information is s...

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Abstract

The invention discloses a network video monitoring system based on resolution ratio grading transmission, comprising a monitoring acquisition terminal and a monitoring center, wherein the monitoring acquisition terminal is used for transmitting acquired videos to the monitoring center through a network. The network video monitoring system is characterized in that the monitoring acquisition terminal comprises a high-definition video camera, an acquisition control unit and network access equipment, wherein the high-definition video camera is used for acquiring high-definition video information; and the acquisition control unit is used for carrying out digital compression coding on the high-definition video information acquired by the high-definition video camera, also outputting high-definition video streams and ordinary video streams and outputting the high-definition video streams or the ordinary video streams according to a control signalling or presetting sent by the monitoring center. The invention can acquire high-definition monitoring videos under an interesting scene without special requirements for the type, the bandwidth, and the like of the network and well solves the problem of contradiction between an acquired high-definition video monitoring image and limited network transmission bandwidth in the prior art.

Description

technical field [0001] The invention relates to a network video monitoring system, in particular to a network video monitoring system based on resolution hierarchical transmission. Background technique [0002] Video surveillance systems are mainly used to monitor important areas or remote locations. Video surveillance technology is being more and more widely used in power systems, telecommunications rooms, factories, urban transportation, water conservancy systems, community security and other fields. The video monitoring system transmits the video information collected in real time at the monitoring point to the monitoring center in a timely manner, and dynamically reports the situation of the monitored point in real time, so as to find problems in time and deal with them. [0003] The traditional video surveillance system is an analog video surveillance system, and the analog video surveillance system is mainly composed of a monitoring front end and a video wall. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N7/26
Inventor 王俊波王金元曹哲焦媛陈明党小宇刘冰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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