Data collection method of usb driver-free video capture 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: 2019-03-15
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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  • Data collection method of usb driver-free video capture card
  • Data collection method of usb driver-free video capture card
  • Data collection method of usb driver-free video capture 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 Video ADC, TVD processing, Video Process, 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 channels of 10bit ADC, and the TVD pe...

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Abstract

The invention relates to a video acquisition method, in particular to a data acquisition method for a USB driver-free video acquisition card. The technical problem to be solved by the present invention is to provide a USB video acquisition card data acquisition method that does not need to install a driver, is plug and play, and has strong operating system compatibility. The technical solution adopted by the present invention to solve the technical problem is: the USB video capture card sends the AV or S-Video signal and the sound signal to the USB Host through the USB interface through the UVC / UAC protocol. The PAL / NTSC system supported by the AV signal is processed by the video module Scalar Down to form the resolution and frame rate that the USB can receive. The video player plays or collects the video input by the AV / S-Video signal to complete the data collection of the USB video capture 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 Patents(China)
IPC IPC(8): H04N5/232H04N13/243
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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