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A method for automatic conversion of CMOS camera multi-resolution VESA video to BT1120 protocol video

A BT1120, multi-resolution technology, applied in the field of embedded computer video processing, can solve the problem that the multi-resolution VESA video of CMOS camera cannot be compatible with high-definition digital video surveillance system, etc.

Active Publication Date: 2020-09-22
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the multi-resolution VESA video of the CMOS camera cannot be compatible with the high-definition digital video surveillance system, and promote the wide application of the CMOS camera in the high-definition digital video surveillance system

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  • A method for automatic conversion of CMOS camera multi-resolution VESA video to BT1120 protocol video
  • A method for automatic conversion of CMOS camera multi-resolution VESA video to BT1120 protocol video
  • A method for automatic conversion of CMOS camera multi-resolution VESA video to BT1120 protocol video

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Taking a high-definition digital video surveillance system in a confidential place as an example, the system needs to complete the automatic conversion of a CMOS camera with any resolution VESA video to BT1120 protocol HD-CIF video. The specific steps of this method are as follows.

[0024] In the first step, the RGB video signal of the CMOS camera is directly connected to the FPGA, and the synchronization signals HS, VS, and DE are cached in multiple levels in the FPGA. In this example, it is required to be able to filter out glitches within four clock cycles, and set the filter parameters as required. The glitch signal is detected and filtered out, and then the synchronous signal is re-output.

[0025] In the second step, the resolution of the VESA video is detected through the synchronous signals HS, VS, and DE. Divide 1920 by the number of VESA video columns...

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Abstract

The invention belongs to the technical field of embedded computer video processing, in particular to a method for automatically converting CMOS camera multi-resolution VESA video to BT1120 protocol video. Through synchronous signal filtering, resolution detection and scaling parameter calculation, video scaling processing, BT1120 timing generation, color space conversion, video output control and other operations, the CMOS camera multi-resolution VESA video is automatically converted into BT1120 protocol HD‑CIF video. BT1120 protocol video is widely used in high-definition digital video surveillance systems. Therefore, this invention solves the problem that the multi-resolution VESA video of the CMOS camera cannot be widely used in the high-definition digital video surveillance system.

Description

technical field [0001] The invention belongs to the technical field of embedded computer video processing, in particular to a method for automatically converting multi-resolution VESA video of a CMOS camera to a BT1120 protocol HD-CIF video. Background technique: [0002] The research on CMOS and CCD image sensors started almost at the same time, but due to the limitation of the past technology level, CMOS developed slowly due to the shortcomings of large noise and low resolution. In the past 10 years, due to the continuous improvement of integrated circuit design technology and process level, the past shortcomings of CMOS have been basically overcome, and its advantages such as small size, low power consumption, and high integration are even more unmatched by CCD. CMOS image sensing devices have made a qualitative leap today and are widely used in various levels of image quality requirements. Cameras with integrated CMOS image sensors have been widely used in embedded fiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N9/04H04N9/64
CPCH04N7/18H04N9/64H04N23/10
Inventor 詹思维樊超王海鹏杨立成贾超群杨敬宝
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA