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Automatic conversion method of multi-video format to ntsc standard video of bt.656 protocol

A BT.656, automatic conversion technology, applied in the field of video processing, graphics and images, to achieve the effect of less time-consuming video format conversion

Active Publication Date: 2017-11-24
AVIC NO 631 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the integration problem of the video conversion of any protocol type to the NTSC standard video conforming to the BT.656 protocol, and proposes an automatic conversion method from multiple video formats to the NTSC standard video of the BT.656 protocol

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  • Automatic conversion method of multi-video format to ntsc standard video of bt.656 protocol

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Embodiment Construction

[0032] The present invention adopts FPGA to realize the automatic conversion method of multi-video format to BT.656 protocol NTSC standard video, analyzes the data flow of input video signal by establishing a variety of general video protocol databases, and compares and judges it with various common video protocol data flows It belongs to the protocol type, and detects the image resolution and frame rate at the same time; designs the image frame double buffer A and B, and uses the ping-pong operation to store the effective pixels of the video stream data frame into the buffer A, and at the same time, according to the resolution of the image, the buffer The complete data frame buffered in area B is scaled to a resolution size of 640*480 by bilinear interpolation algorithm and stored in the output storage unit; the control pixel stream of the NTSC video blanking area is generated according to the BT.656 protocol, and stored from the output Sequentially read the scaled pixel data ...

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Abstract

The present invention relates to an automatic conversion method from multiple video formats to BT.656 protocol NTSC standard video, comprising the following steps: 1] creating an automatic conversion system; 2) sending input video signals into the protocol detection module; 3) high power The level enable signal CEn drives the protocol N acquisition unit corresponding to the protocol N detection unit to collect effective pixels of the input video signal; 4] the high level enable signal CEn is used as the control signal quantity of the multiplex switch controller; 5] scaling processing The module scales to a resolution of 640*480, and writes it into the output storage unit at the same time; 6] The sending control module generates the control pixel stream of the NTSC video blanking area according to the BT.656 protocol, and realizes the conversion of the input video to the NTSC standard video . The invention solves the integration problem of converting any protocol type of video to the PAL system. The invention can automatically convert the video of any protocol type and resolution into the NTSC standard video conforming to the BT.656 protocol, and the video format conversion takes less time.

Description

technical field [0001] The invention belongs to the fields of video processing and graphic images, and in particular relates to an automatic conversion method from multiple video formats to BT.656 protocol NTSC standard video. Background technique [0002] NTSC analog video is a classic video format, and it is usually used as a standard interface for video output in many applications. However, for existing visual sensors, the output video protocols are different, so it is often necessary to convert the video of various protocols output by the visual sensor into the NTSC standard that conforms to the BT.656 protocol; although various video formats have appeared to NTSC standard video conversion chips, but these chips often only support the codec of one or one type of input video. [0003] With the development of electronic technology and large-scale integrated circuits, the use of field programmable logic gate arrays (FPGA) has great advantages in terms of integration, stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01
Inventor 贺莹王闯楚要钦刘永强张东红王国东刘硕
Owner AVIC NO 631 RES INST