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Calibration of the battery device for a portable computer system

  • US 5,963,017 A
  • Filed: 06/12/1998
  • Issued: 10/05/1999
  • Est. Priority Date: 04/01/1998
  • Status: Expired due to Term
First Claim
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1. A calibration apparatus for a battery device of a portable computer system, which includes a parallel port interface, a main board circuit, the battery and a power-supply board circuit, the calibration apparatus inputting an alternating current supply, comprising:

  • a standard parallel port interface coupled to the parallel port interface of the portable computer system for generating at least a control signal;

    a control circuit, inputting the control signal, for selectively outputting the alternating current supply to the power-supply board circuit to perform charge/discharge operation of a predetermined type.

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