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Portable information terminal and power supply control method therefor

  • US 6,735,455 B2
  • Filed: 12/20/2000
  • Issued: 05/11/2004
  • Est. Priority Date: 12/27/1999
  • Status: Active Grant
First Claim
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1. A portable information terminal having a plurality of functions, comprising:

  • a plurality of function processing units, each function processing unit performing one of the functions;

    a battery which supplies electric power to the function processing units;

    a remaining battery charge detecting unit which detects remaining battery charge of the battery;

    a power supply control unit which compares the remaining battery charge with each of power supply limiting values determined in advance with respect to the function processing units; and

    an input unit for inputting a procedure to follow when the remaining battery charge becomes lower than at least one of the power supply limiting values of the function processing units, said procedure comprising at least one of stopping said power supply to at least one of the function processing units and outputting warning signals.

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