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Video camera with low battery warning

  • US 7,102,684 B1
  • Filed: 02/23/2000
  • Issued: 09/05/2006
  • Est. Priority Date: 02/26/1999
  • Status: Expired due to Fees
First Claim
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1. A video camera, comprising:

  • obtaining means for obtaining a capacity value of a battery by communicating via a communications line with a battery pack that contains the battery, the battery providing power to the video camera, the capacity value indicating a number of cell structures in the battery;

    setting means for setting a correction value based on the capacity value;

    correcting means for correcting a low power warning voltage value by subtracting the correction value from the low power warning voltage value;

    generating means for generating a low power warning when a detected battery voltage is less than or equal to the corrected low power warning voltage value and for generating a residual power indication when the detected battery voltage is greater than the corrected low power warning voltage value; and

    display means for displaying the low power warning or the residual power indication.

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