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USB camera band width distribution method, driving device and system thereof

A driving device and camera technology, applied in the parts of TV system, image communication, color TV, etc., can solve the problem of not guaranteeing the normal operation of video applications, and achieve the effect of avoiding interruption and ensuring normal operation.

Inactive Publication Date: 2008-02-27
南通江涌投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen from the above existing methods that in order to reallocate the bandwidth of the USB camera, the user needs to manually stop the video stream and restart it manually after the allocation is completed, so that the USB data transmission interruptions, the proper functioning of video applications cannot be guaranteed

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  • USB camera band width distribution method, driving device and system thereof
  • USB camera band width distribution method, driving device and system thereof

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Embodiment Construction

[0045] The core idea of ​​the present invention is: pre-set pseudo-video data; when the bandwidth of the USB camera needs to be set, if the USB camera has opened the video stream, then send the pseudo-video data, stop the USB data of the USB camera, and reset the information according to the current bandwidth. Apply for USB bandwidth; start the video stream after the bandwidth application is successful, and stop sending pseudo video data.

[0046] 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 with reference to the accompanying drawings and preferred embodiments.

[0047] Fig. 2 is a schematic diagram of the composition structure of the USB camera driving device of the present invention, as shown in Fig. 2, the device mainly includes a control module, a video stream sending module, a bandwidth application module and a recording module, wherein,

[0048] Recording mod...

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Abstract

This invention discloses a method, a drive device and a system for distributing bandwidth of USB camera head, if the USB camera head has started up a video flow, then a false video data are transmitted and the USB data of the head are stopped and a new application for USB bandwidth is made according to the current bandwidth information when bandwidth of the USB head is needed to be started up, in this invention, users do not have to stop the video flow artifically or re-start it up manually after distribution so as to avoid interruption of USB data transmission and guarantee normal work of the video applied process, further more, when there are two or more than two USB camera heads, it distributes a bandwidth for the turned on USB head reasonably to secure its normal work.

Description

technical field [0001] The invention relates to the technology of a USB camera, in particular to a method, a driving device and a system for distributing bandwidth of a USB camera. Background technique [0002] When the USB camera starts to work with the video stream, it must transmit data continuously, otherwise it will cause an error in the application program using the camera; and when the USB camera redistributes the USB bandwidth, the USB device must be in a stop working state. When the existing USB camera resets the USB bandwidth, the user must manually control the USB camera to stop working, close the video stream, and then manually open the video stream again after the USB bandwidth is reset. [0003] Fig. 1 is the structural schematic diagram of existing USB camera work system, as shown in Figure 1, mainly comprises: USB camera, USB controller, USB camera drive unit and video application program unit, under normal circumstances, USB camera converts the video informa...

Claims

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Application Information

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IPC IPC(8): H04N5/765H04N7/26
Inventor 李春玲孙新云曹玉弟李高峰
Owner 南通江涌投资开发有限公司