Method and decoder for video decoding in video monitoring

Abstract

The invention discloses a method and a decoder for video decoding in video monitoring. The decoder runs on a windows XPE system and comprises a self-adaptive network chip, a CPU, a PCH, an FLASH, a BNC output logical unit and a BNC, wherein the self-adaptive network chip is used for receiving a decoding request containing decoding parameters from a video monitoring client, and sending the decoding request to the CPU; the CPU calls the corresponding software development kit SDK from the FLASH according to monitoring equipment information, receives a video stream from the self-adaptive network chip, decodes the video stream by using the called SDK, and sends the decoded video stream and output port information to the PCH; the PCH receives the decoded video stream of the CPU, and sends the decoded video stream and a specified BNC interface to the BNC output logical unit; the BNC output logical unit receives the decoded video stream sent by the PCH and converts the decoded video stream to an analogue signal; the BNC receives the analogue signal from the BNC output logical unit and sends the analogue signal to a display wall for displaying through the interface corresponding to the specified BNC interface. The scheme disclosed by the invention is capable of realizing decoding for the video streams of many different types of monitoring equipment, and supporting the output display of the BNC interface.

Description

technical field [0001] The invention relates to video monitoring technology, in particular to a video decoding method and decoder in video monitoring. Background technique [0002] In the video monitoring solution, the monitoring equipment collects video data, encodes it, and then sends it to the decoder through the network channel for decoding; the decoder sends the video stream to the monitor for display after decoding. Described monitoring equipment is for example: network hard disk video recorder (NVR, Net Video Recorder), network camera (IPC, IP camera), IPC, digital hard disk video recorder (DVR, Digital Video Recorder), digital video coder (DVS, Digital Video Server )Wait. [0003] The software development kit (SDK, Software Development Kit) will be used in the decoding process, and the software development kit (SDK, Software Development Kit) will be described here first. SDK refers to a collection of development tools used to create application software for specifi...

AI Technical Summary

Problems solved by technology

After the decoder selects a certain Linux version, it can only run the SDK corresponding to this version. In this way, it can only decode the data stream of some monitoring devices, which limits the decoding

[0005] Moreover, the current decoders are mostly realized by the soft decoding method of PC motherboard + multiple pluggable integrated graphics cards. The hardware architecture of this method is "industrial computer + graphics card" form; according to the characteristics of this form, the The integrated graphics card is pluggable, and the integrated graphics card can be plugged and unplugged at will, and the output interface on the graphics card generally only supports the video graphics array (VGA, Video Graphics Array) interface, digital video interface (DVI, Digital Video Interface), etc., and does not support the bayonet nut Connector (BNC, Bayonet Nut Connector) interface

This solution has the following disadvantages: the pluggable method is adopted, which is easy to be damaged during transportation and easy to fall off; the BNC interface has the characteristics of sending data streams to the display wall for display, and cannot support the BNC interface, so it cannot be used on the display wall. multi-screen display

[0006] In summary, the existing decoding scheme has the following defects: it cannot decode the video streams of various types of monitoring equipment, and cannot support the output display of BNC interface

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