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Battery system for camera

  • US 5,164,761 A
  • Filed: 02/10/1992
  • Issued: 11/17/1992
  • Est. Priority Date: 03/06/1991
  • Status: Expired due to Term
First Claim
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1. A battery system for use in a camera, comprising:

  • a camera body; and

    a battery pack to be detachably mounted to the camera body;

    the battery pack including;

    a reusable secondary battery;

    calculation means for calculating the amount of charge and discharge of said secondary battery; and

    output means for releasing a signal indicating the remaining capacity of said secondary battery, obtained by said calculation; and

    the camera body including;

    means for receiving said signal, indicating the remaining capacity, from said output means; and

    means for displaying the remaining capacity of the secondary battery, based on said signal indicating the remaining capacity.

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