Electronic flash memory external storage method and device

CAFC
  • US 7,788,447 B2
  • Filed: 07/24/2004
  • Issued: 08/31/2010
  • Est. Priority Date: 11/14/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A portable flash memory storage device comprising:

  • at least one flash memory module built-in said device, wherein said flash memory module is arranged on a block basis;

    a USB or IEEE 1394 connector for establishing a data exchange channel between a host computer and said flash memory module based on USB or IEEE 1394 standard;

    a microprocessor for processing commands to directly access data or information in the said flash memory module, said microprocessor further comprises a firmware for processing user requests to access the flash memory module; and

    a circuit connected with said USB or IEEE 1394 connector and said flash memory module, through which a DC power supply is provided from said host computer through said USB or IEEE 1394 connector to said flash memory module and said microprocessor upon connecting said portable flash memory storage device with said host computer,wherein said portable flash memory storage device only acquires DC power from the host computer through said USB or IEEE 1394 connector; and

    wherein said microprocessor coordinates with a driver for the portable flash memory device in the host computer to assign and display a device symbol for said portable flash memory device upon connecting said USB or IEEE 1394 connector to the host computer.

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