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Method for extracting and processing video data

A technology of video data and processing method, which is applied in the field of data processing, can solve problems such as occupation, low processing efficiency, and multiple DSP computing resources, and achieve the effects of less computing resources, improved processing efficiency, and high-efficiency video acquisition

Active Publication Date: 2011-04-13
深圳市高新投三江电子股份有限公司
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction and processing method of multi-channel mixed ITU-R BT.656 format video data has not been optimized, the processing efficiency is relatively low, and it needs to occupy more DSP computing resources

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  • Method for extracting and processing video data
  • Method for extracting and processing video data

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Embodiment Construction

[0031] The present invention will be further described below in combination with specific embodiments and with reference to the accompanying drawings.

[0032] A kind of multi-channel mixed ITU-R BT.656 format video data extraction processing method as shown in the accompanying drawing has the following steps successively:

[0033] 1) Form a 4-channel parallel data acquisition system:

[0034] A video and audio A / D conversion chip TW2815 with 4-channel video and audio mixed stream mode input is cascaded connected with a multi-core processing chip PNX8950. The multi-core processing chip PNX8950 adopts an embedded Linux operating system, including a MIPS processor core and two DSP processing The core TM3260, the video and audio A / D conversion chip TW2815 and the DSP processor core TM3260 in the multi-core processing chip form a 4-channel parallel data acquisition system; the video and audio A / D conversion chip TW2815 is configured as a 4-channel mixed ITU-R BT .656 format D1 en...

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Abstract

The present invention provides a method for extracting and processing video data which are multi-channel and are mixed with the format of ITU-R BT.656. The method sequentially comprises the following steps: 1) forming at least one four-channel parallel data collection system; 2) converting and synthesizing the video and audio mixed flow to one-channel data with the mode of time division multiplexby a video-audio A / D converter; and 3) executing resolution processing to the video and audio mixed flow by a multi-core processing chip for analyzing the effective video data line with the format ofITU-R BT.656. The method of the invention extracts and processes the optimized high-efficiency video data. The high-efficiency video collection, quick and real-time video extraction and video coding can be realized. The storing and network transmission of real-time data are realized through extracting the divided video data for compressing. The data operation processing performance of system is remarkably increased under the precondition that the visual effect is guaranteed. The processing efficiency is increased for about one time and the engaged DSP computing resources are few.

Description

technical field [0001] The invention relates to data processing, in particular to an efficient multi-channel mixed ITU-R BT.656 (formerly known as CCIR656) format video data extraction processing method. Background technique [0002] Existing digital hard disk video recorders usually use a video A / D chip with a combiner function to mix multiple channels of ITU-R BT.656 format video data into one channel of data to be connected to the DSP chip, and when the video data is connected to the DSP chip, The DSP chip needs to split and restore the mixed video data into multiple data for processing. At present, the extraction and processing method of multi-channel mixed ITU-R BT.656 format video data has not been optimized, the processing efficiency is relatively low, and more DSP computing resources are required. Contents of the invention [0003] The technical problem to be solved by the present invention is to make up for the deficiencies of the above-mentioned prior art, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/52H04N7/26H04N19/156H04N19/157H04N19/42H04N19/436H04N19/70
Inventor 叶润源刘平
Owner 深圳市高新投三江电子股份有限公司