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CIRCUIT AND OPERATING METHOD FOR INTEGRATED INTERFACE OF PDA AND WIRELESS COMMUNICATION SYSTEM

  • US 20070293278A1
  • Filed: 08/23/2007
  • Published: 12/20/2007
  • Est. Priority Date: 08/15/2002
  • Status: Active Grant
First Claim
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1. A battery charging method for a device that comprises a PDA, a wireless communication system, and a power system having a battery capable of being charged via an external charging cable, the device further having an external charging circuit for charging the battery, and the wireless communication system having an internal charging circuit for charging the battery, the battery charging method comprising:

  • performing current charging to the battery via the external charging circuit by using the external charging cable;

    turning on the wireless communication system; and

    turning on the internal charging circuit for charging after the wireless communication system is turned on.

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