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Circuitry for optimization of power consumption in a system employing multiple electronic components, one of which is always powered on

  • US 7,472,301 B2
  • Filed: 05/27/2005
  • Issued: 12/30/2008
  • Est. Priority Date: 05/27/2005
  • Status: Expired due to Fees
First Claim
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1. Circuitry for conserving power in a closed system include an external device separated by a boundary from and in communication with an internal device;

  • the internal device having multiple electronic components, comprising;

    a power source;

    a first electronic component operating at a first frequency and continuously powered on by the power source; and

    a second electronic component operating at a second frequency different than that of the first frequency of the first electric component, the second electronic component being maintained in a powered off state in which no energy is consumed by the second electronic component until energized in response to a power enabling signal generated by the first electronic component based on demand of the particular function to be performed by the second electronic component;

    the power source, the first electronic component and the second electronic component being disposed within the internal device;

    wherein the power enabling signal is generated by the first electronic component in response to (i) expiration of a predetermined time period for initiating automatic self-testing sequencing of the internal device; and

    (ii) receiving at the internal device an RF communication signal transmitted from the external device.

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