Battery recharging system and method for electronic cameras

  • US 6,774,946 B1
  • Filed: 07/28/1999
  • Issued: 08/10/2004
  • Est. Priority Date: 07/29/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. An electronic camera equipped with a solid-state electronic image sensing device for sensing the image of a subject and outputting a video signal representing the image of a subject, comprising:

  • a power-supply switch for controlling a power supply to turn the power supply on and off;

    a power-supply switch discrimination device for determining whether said power-supply has been turned off;

    a charging circuit for charging a rechargeable battery;

    a current discrimination device for determining whether a charging current obtained from a signal charge that has accumulated in the solid-state electronic image sensing device is greater than a predetermined current; and

    a charging control device, responsive to a determination by said power-supply switch has been turned off, for controlling said charging circuit so as to charge the rechargeable battery using the charging current if said current discrimination device determines that the charging current is greater than the predetermined current.

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