System for automatic testing USB compatibility

An automatic testing and compatibility technology, applied in the testing field, can solve the problems of low testing efficiency, insufficient testing, and large occupation of human resources, and achieve the effects of easy implementation, improved efficiency, and reduced labor costs.

Inactive Publication Date: 2007-10-24
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only takes up a lot of human resources, but also because the testing process must involve plugging and unplugging the U...

Method used

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  • System for automatic testing USB compatibility
  • System for automatic testing USB compatibility
  • System for automatic testing USB compatibility

Examples

Experimental program
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Effect test

Embodiment 1

[0050] With reference to Fig. 3, in the present embodiment, the switch units in the multiple data transmission paths are relay groups, the PC and the USB device to be tested all have USB2. The two USB interfaces of the USB device to be tested are also USB2.0 interfaces. In this embodiment, the USB devices to be tested need to be tested under USB2.0 and USB1.1 respectively.

[0051] The USB speed conversion module includes two data transmission paths, namely a high-speed data transmission path and a full-speed data transmission path. The high-speed data transmission path is connected in series with a relay group A, and the relay group A is used to connect or disconnect the high-speed data transmission path under the control of the microcontroller; the full-speed data transmission path is connected in series with a USB1. 1 hub and a relay group B, the USB1.1 hub is used to convert the data transmission speed on the full-speed data transmission path to the interface speed of USB...

Embodiment 2

[0058] The test of USB device compatibility not only includes the above-mentioned plug-in test and sleep / standby test, but also includes many aspects of testing, such as the test of USB camera compatibility, and the USB camera transmission of the USB camera is also required. Tests for correctness and stability of image data. Fig. 5 shows the second preferred embodiment of the system for automatically testing the compatibility of USB camera devices provided by the present invention. In this embodiment, the USB device to be tested is a USB camera device. This embodiment is mainly aimed at the test of the correctness and stability of the image data transmitted by the USB camera when the USB camera is plugged and unplugged multiple times or when the PC recovers from sleep / standby. Under USB1.1, the structure of the USB interface speed conversion device of this embodiment is the same as that in the embodiment shown in Figure 4, and their USB interface speed conversion process is a...

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Abstract

The invention provides a system for automatically testing the compatibility of USB device, which uses a USB interface speed convert module based on the control command of PC to convert the USB interface speed, to test the compatibility of USB device under different USB interface speeds. Compared with artificial USB compatibility test, the invention reduces cost, improves efficiency, simplifies operation, and resolves the problem that the transmitted video flow may be delayed, mistake color, shifts image, and discontinuously display image when the PC is returned to normal state from wait/sleep state or the USB device is plugged several times.

Description

technical field [0001] The invention relates to the field of testing, in particular to a system for automatically testing the compatibility of USB devices. Background technique [0002] The universal serial bus (Universal Serial Bus; USB) peripheral device interface is jointly formulated by seven hardware and software manufacturers including Interl, Compaq, NEC, DEC, IBM, Northern Telecom, and Microsoft. The parallel ports or serial ports used by personal computers are much faster, so there are various types of computer peripherals that match it, such as network cards that support USB interfaces, USB cameras, USB Mouse, etc., these USB devices not only support the plug-and-play function, but also can be used without rebooting. [0003] With the development of interface communication technology, the USB interface standard has also undergone some changes. In the market, there are two types of interfaces, USB1.1 and USB2.0, which are more common. Therefore, to test the compat...

Claims

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Application Information

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IPC IPC(8): G06F11/267
Inventor 涂坚游明琦
Owner VIMICRO CORP
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