USB equipment and switching method thereof

A USB interface and device technology, applied in the field of USB devices and their switching, can solve the problems of inability to activate the device, infeasibility, etc., and achieve the effect of convenient switching

Inactive Publication Date: 2004-11-24
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the root structure of the USB hub 8 can use multiple USB devices 7 at the same time, in the case of no external power supply in this structure, for some portable devices, the 500mA upper limit current of the USB may not be able to activate the device.
In addition, in the special case where multiple USB portable devices need to be used interactively, such as different USB devices need to be hidden from the host due to security or other reasons, this architecture is not feasible

Method used

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  • USB equipment and switching method thereof
  • USB equipment and switching method thereof
  • USB equipment and switching method thereof

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Embodiment Construction

[0015] refer to figure 2 Shown is a schematic structural diagram of the USB device 6 of the present invention. The USB device 6 of the present invention can be in a storage operation mode, a wireless communication operation mode or an interruption operation mode. The default operation mode of the USB device 6 is the storage operation mode. When the working mode of the USB device 6 needs to be changed, the switching can be performed through the switching module 62 of the USB device 6 . When the USB device 6 is in the storage operation mode, it can be used as a USB storage device; when the USB device 6 is in the wireless communication operation mode, it can be used as a USB wireless communication device; and in the interrupt operation mode, it can be used as a In this dormant state, it remains connected to the host, waiting to be transferred to the storage operation mode or the wireless communication operation mode.

[0016] The USB device 6 of the present invention includes...

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Abstract

The present invention provides one kind of portable USB equipment and its switch method. The portable USB equipment may be in storing operation mode, radio communication operation mode or interruption operation mode. The portable USB equipment includes one USB interface module for connection to the USB interface of the system unit; one memory module for read/write data; one radio communication module for access to radio LAN to complete radio communication; and one switching module for switching between the memory module and radio communication module, with the switching module including one mechanical switch, the first analog switch and the second analog switch.

Description

【Technical field】 [0001] The present invention relates to a USB (Universal Serial Bus, Universal Serial Bus) device and a switching method applicable to the USB device, in particular to a portable USB device with multiple operating modes and a switching method applicable to the USB device Switch method. 【Background technique】 [0002] At present, there are many devices connected to a host (Host) through a USB interface, such as a wireless communication card, a modem (Modem), a flash disk (Flash Disk), a tape drive, a scanner, a printer, and the like. However, the number of USB interface slots of the host is generally limited, and for users with multiple USB devices, the USB interface slots of the host are not enough for multiple USB devices. [0003] In order to solve the problem that the USB interface slot of the host computer is not enough for multiple USB devices, an existing method is to use a USB hub (USB Hub), such as the U.S. Patent No. 5,784,581 announced on July 21...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/00
Inventor 吴正宇
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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