Driver free data collection method of USB video collection card

A video capture card and data collection technology, which is applied to TVs, color TVs, and components of color TVs, etc., can solve problems such as poor system compatibility, and achieve the effect of cost saving, clear and stable picture quality

Active Publication Date: 2016-06-08
宏晶微电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Input interface judgment, data interlacing processing and system conversion need to be processed by a computer, and the transmission of video playback requires the installation of drivers, and the compatibility of different systems is relatively poor

Method used

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  • Driver free data collection method of USB video collection card
  • Driver free data collection method of USB video collection card
  • Driver free data collection method of USB video collection card

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] USB drive-free video acquisition card data acquisition method of the present invention, it comprises the following steps:

[0026] Step 1, Video processing unit. The Video module has 2 channels of ADC input, supports 1 channel of AV signal and 1 channel of S-Video signal, and the input interface can be automatically detected. The Video module mainly includes VideoADC, TVD processing, VideoProcess, data packaging and USB2.0 transmission;

[0027] The Video processing unit realizes the sampling and quantization of the analog signal AV / S-Video through 2-channel 10bitADC, and the TVD performs ...

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Abstract

The invention relates to a video collection method, especially a driver free data collection method of a USB video collection card. The technical problem to be solved by the invention is providing the data collection method of the USB video collection card. According to the method, the driver is unnecessarily installed; plug and play can be realized; and the operation system compatibility is high. The technical solution adopted by the invention to solve the technical problem is that the USB video collection card sends AV or S-Video signals and sound signals to a USB Host through a USB interface according to a UVC / UAC protocol; Scalar Down processing is carried out to an AV signal supported PAL / NTSC form by a video module, thus forming USB receivable resolution and frame rate; and a video player plays or collects a video input by the AV / S-Video signals, thus finishing the data collection of the USB video collection card.

Description

technical field [0001] The invention relates to a video acquisition method, in particular to a data acquisition method for a USB driver-free video acquisition card. Background technique [0002] The video signal is collected through USB, the system uses multiple chips, and the input data is directly transmitted to the computer without much processing. Input interface judgment, data interlacing processing, and system conversion need to be processed by a computer. Video transmission and playback need to install drivers, and the compatibility of different systems is relatively poor. [0003] The video acquisition method of the USB video acquisition card of the present invention adopts the UVC / UAC protocol, does not need to install drivers, is compatible with different operating systems, is plug-and-play, realizes high integration, and realizes video acquisition and transmission functions on a single chip of the system. Contents of the invention [0004] The technical problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N13/02
CPCH04N13/204H04N23/663
Inventor 汪桃红刘伟刘江
Owner 宏晶微电子科技股份有限公司
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