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USB device

  • US 20030172312A1
  • Filed: 12/17/2002
  • Published: 09/11/2003
  • Est. Priority Date: 03/07/2002
  • Status: Active Grant
First Claim
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1. A USB device for performing communications with a second device through a USB interface while supplying electric power to the second device through a power-source supplying line in the USB interface, the USB device comprising:

  • a communication unit that communicates with the second device;

    a power source capable of outputting electric power of a voltage being different from a standard power voltage prescribed in the standards of the USB interface; and

    wherein the power source supplies the electric power to the second device through the power-source supplying line.

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