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Universal serial bus device detection system

A technology of universal serial bus and detection system, applied in the field of detection system

Inactive Publication Date: 2007-10-17
QUANTA COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, when the original timing of the USB device is changed, other side effects may occur

Method used

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  • Universal serial bus device detection system
  • Universal serial bus device detection system
  • Universal serial bus device detection system

Examples

Experimental program
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Embodiment Construction

[0024] Please refer to FIG. 3 . FIG. 3 is a functional block diagram of a computer system 3 according to a first preferred embodiment of the present invention. In this embodiment, the computer system (Computer system) 3 includes a host (Host) 30 , a power supply (Power supply) 32 and a detection system 34 . The detection system 34 is used to detect a USB device (not shown) installed in the computer system 3 . The detection system of the present invention is suitable for built-in or external USB devices. The detection system 34 further includes at least one USB connector (Connector) 340 and a delay circuit (Delay circuit) 342 . Only one USB connector 340 is shown in FIG. 3 for illustration, but not limited thereto.

[0025] Please refer to FIG. 4 , which is a schematic circuit diagram of the USB connector 340 in FIG. 3 . The USB connector 340 has two data buses USB DATA+ and USB DATA-, as shown in FIG. 4 . In this embodiment, a USB device (not shown) is connected to the USB...

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PUM

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Abstract

The invention discloses a USB device test system, for testing a USB device which is installed in a computer system. The computer system contains a host computer and a power supply. The test system contains a USB connector and a delay circuit. The USB device is connected with the USB connector. The USB connector has a data bus. The delay circuit is coupled with the data bus of USB connector, in order to control a switch of data bus. The power supply provides the electrical source to the delay circuit, when the computer system is started, and the delay circuit controls the start of data bus after a predeterminded delay time, to this end, the host computer of computer system is able to test the USB device by the data bus.

Description

technical field [0001] The invention relates to a detection system, and in particular to a universal serial bus (USB) device detection system which can accurately detect built-in or external USB devices installed in a computer system. Background technique [0002] Recently, Universal Serial Bus (USB) is more and more widely used in computer systems. Generally, a computer system with a USB interface includes not only a host, a power supply, but also at least one USB connector for connecting built-in or external USB devices. When the computer system is just started, the USB device is often not detected because the host computer is not ready. If the USB device is external, the user must reinsert the USB device into the USB connector until the host detects the USB device. However, if the USB device is built-in, the user cannot reinsert the USB device into the USB connector, causing trouble in use. [0003] Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic circuit diag...

Claims

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Application Information

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IPC IPC(8): G06F11/267
Inventor 林国彰
Owner QUANTA COMPUTER INC