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Full digital monitoring system with low latency

A monitoring system, all-digital technology, applied in the direction of closed-circuit television systems, televisions, electrical components, etc., can solve the problems of small reliable transmission distance, high complexity, and difficult expansion of analog signals, and achieve low delay, low real-time control, and easy The effect of maintenance

Inactive Publication Date: 2009-06-17
杭州恒生数字设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the system designed in this way is that what you see at the console is an analog signal, and the delay is small. The disadvantage is that the reliable transmission distance of the analog signal is small, it is difficult to expand, the system is high in cost, high in complexity, and difficult to maintain.

Method used

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  • Full digital monitoring system with low latency
  • Full digital monitoring system with low latency
  • Full digital monitoring system with low latency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment is an actual digital monitoring system used in grass-roots police stations. Wherein the video signal encoder 1 is installed on a square in a business district, and the computer 2 is an embedded device with a display module installed at a console of a police station. A storage cabinet as a post-processing device 4 is also installed at the console for storing, retrieving and playing back the compressed video signal transmitted from the monitoring front end.

[0042] The camera module 11 of the video signal encoder 1 adopts the CCD module ICX409AK of Samsung, the analog-to-digital conversion module 12 adopts the TVP5150 chip, the CPU and the DSP module 13 adopt the DSP chip TI6416 and the CPU chip IXP425 respectively, and the first network control module 14 adopts the Intel82551 chip. The camera module 11 sends the analog video signal collected on site to the analog-to-digital conversion module 12, and the analog-to-digital conversion module 12 samples and ...

Embodiment 2

[0045] This embodiment is a digital monitoring system for railway stations. Wherein the video signal encoder 1 is installed in the waiting room, the computer 2 is a PC, the external keyboard of the PC is used as the front-end control module 24, the PC is externally connected to the monitor 3, and the computer 2 and the monitor 3 are all installed in the control room of the railway station command room Office. The console is also equipped with a digital matrix as a post-processing device 4 for storing, retrieving and replaying the compressed video signals transmitted from the monitoring front end. For the convenience of viewing, a large screen is also connected to the digital matrix.

[0046] The camera module 11 of the video signal encoder 1 adopts Samsung's CCD module ICX409AK, the analog-to-digital conversion module 12 adopts the TVP5150 chip, and the CPU and DSP module 13 adopts the TI6446 chip. The TI6446 chip is a chip that integrates DSP and CPU. Network control module ...

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Abstract

The invention discloses a low-delay all-digital monitoring system, which comprises a video signal coder, a computer and a display which are orderly connected, wherein the video signal coder comprises a camera module, an analog-digital conversion module, a CPU and DSP module and a first network control module, wherein the computer comprises a second network control module, a CPU module, a display control module and a front end control module. Except for compressing and coding or packing and transmitting YUV format signals, the CPU and DSP module further abstracts the YUV format signals into video signals, then packing an transmitting, the computer displays the video signals on the display after receiving the video signals, thereby the condition of the monitoring front end can be observed in real time, when the camera module needs to be adjusted, the control orders are analyzed by the CPU and DSP module, and results are transmitted to the camera module, and simultaneously, the camera module embodies the executing results of the control orders on the display. Video signals whose low-delay is the same with a simulated system can be seen from the control station, the complexity is reduced, the cost is low and the maintenance is easy.

Description

technical field [0001] The invention relates to a digital monitoring system, in particular to a low-delay all-digital monitoring system. Background technique [0002] At present, the monitoring system has shifted from analog monitoring to digital monitoring. Compared with analog monitoring, the advantages of digital monitoring are compressibility, easy storage and transmission, and easy intelligent processing, such as retrieval and identification. However, digital monitoring also has shortcomings. There are two main shortcomings: one is that the compression of digital images is lossy compression, and the clarity of the compressed image decreases; the other is that the delay caused by compression and decompression is relatively large. The delay time is determined by the complexity of the compression algorithm and the processing capability of the system. The delay of mainstream systems is generally around 500ms. [0003] Regarding the first shortcoming of the digital monitor...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04N7/26
Inventor 查敏中
Owner 杭州恒生数字设备科技有限公司