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Method and system for regulating power in portable audio/video playback device

  • US 20050213929A1
  • Filed: 03/29/2004
  • Published: 09/29/2005
  • Est. Priority Date: 03/29/2004
  • Status: Active Grant
First Claim
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1. A method for regulating power in a portable audio/video playback device electrically supplied by a power unit, said method comprising the steps of:

  • detecting a present remaining power a in said power unit;

    reading an audio/video multimedia file or data and computing a playback time β

    of said file or data;

    computing an average power consumption rate γ

    of said portable audio/video playback device; and

    computing whether the present remaining power α

    is sufficient for a complete playback of said audio/video multimedia file or data, and, if the present remaining power α

    is not sufficient for a complete playback of said audio/video multimedia file or data, reducing an output level of a video or audio output signal so that the complete playback of said audio/video multimedia file or data may be accomplished prior to exhaustion of the power.

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