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Method and apparatus to detect that the battery gauge is out of calibration

  • US 6,691,049 B1
  • Filed: 03/29/2000
  • Issued: 02/10/2004
  • Est. Priority Date: 03/29/2000
  • Status: Expired due to Fees
First Claim
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1. A laptop computer, comprising:

  • a CPU;

    a primary expansion bus;

    a first bridge logic coupling said CPU to said primary expansion bus;

    a secondary expansion bus;

    a second bridge logic coupling said secondary expansion bus to said primary expansion bus;

    a system battery having an actual battery capacity;

    a battery logic associated with said system battery, said battery logic having a battery gauge register adapted to hold a value representing a calculated battery capacity; and

    a keyboard controller coupled to said secondary expansion bus and further coupled to said battery logic, said keyboard controller adapted to determine whether said calculated battery capacity held in the battery gauge register is out of calibration with the actual battery a capacity.

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