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Device, USB equipment and method for realizing drive-free image data transmission

A technology for image data and data, which is applied in the field of devices for realizing drive-free image data transmission, and achieves the effects of preventing data loss, reducing manufacturing costs, and reducing chip area.

Active Publication Date: 2010-07-14
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the end of the USB image and video equipment, it is necessary to improve its processing chip so that the output image data conforms to the UVC protocol, so that the USB image and video equipment can be used without a driver when it is connected to a computer. The implementation of the USB graphics video device can achieve this function

Method used

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  • Device, USB equipment and method for realizing drive-free image data transmission
  • Device, USB equipment and method for realizing drive-free image data transmission
  • Device, USB equipment and method for realizing drive-free image data transmission

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Embodiment Construction

[0061] 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 examples.

[0062] The device disclosed by the invention adopts the UVC header adding module in the UVC circuit, adds headers to the image data according to the currently published UVC protocol, and then transmits the image data to the computer through the USB unit. The USB device with this device converts the image into image data through the image sensor, and the image data is processed by adding headers through the device, and the output image data after adding headers conforms to the provisions of the UVC protocol, because the operating system above Windows XP SP2 The UVC protocol has been supported, so that the USB device with this device can be used directly after connecting to the computer without a driver.

[0063] figure 1 It is a schematic diagram of the...

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Abstract

The invention discloses a device for realizing drive-free image data transmission. In a UVC unit, a transforming sensor module is arranged for judging a signal of an image frame. According to the signal and a published UVC protocol, a UVC packaging head module is arranged for performing the packaging head operation on the image data and then sending to a computer by a USB unit. The invention uses an FIFO module having a ping-pong operation in the USB unit so as to decrease the chip area and the manufacturing cost. A cache module is added in the UVC packaging head module so as to prevent the data from losing in the process of the ping-pong operation. The invention also discloses a piece of USB equipment and a method for realizing drive-free image data transmission. The operating system over the Windows XP SP2 supports the UVC protocol so applying the device, the USB equipment and the method of the invention to the image data transmission can realize directly using the USB image video equipment after being connected with a computer without driving.

Description

technical field [0001] The invention relates to USB image video equipment data transmission technology, in particular to a device, USB equipment and method for realizing driverless image data transmission. Background technique [0002] At present, digital camera technology and network video technology are becoming more and more popular, which makes more and more USB image video devices connected to computers. The wide application of USB image and video equipment makes people put forward higher requirements for its ease of use. The core processing chip of the USB image video device is an image processing chip with a USB unit, and the USB unit provides a corresponding USB interface through which image data can be transmitted to a computer. When the USB image video device is connected with the computer, the image transmission and recognition functions of the device can be realized by installing the corresponding driver. However, with the increasing number of USB image and vid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
Inventor 杨航郭平日
Owner BYD SEMICON CO LTD
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