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Active sensor circuitry for operating at low power and low duty cycle while monitoring occurrence of anticipated event

  • US 7,460,024 B1
  • Filed: 01/17/2006
  • Issued: 12/02/2008
  • Est. Priority Date: 01/17/2006
  • Status: Active Grant
First Claim
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1. An apparatus including active sensor circuitry for operating at low power and a low duty cycle while monitoring for an occurrence of an anticipated event, comprising:

  • early event detection circuitry responsive to external environmental stimuli and one or more control signals by providing a corresponding detected data signal indicative of whether at least a portion of said stimuli is related to an anticipated event, and includinga transducer responsive to said stimuli by providing a corresponding transducer signal, anddetection circuitry coupled to said transducer and responsive to said transducer signal and at least one of said one or more control signals by providing an intermediate signal and said detected data signal; and

    control circuitry coupled to said early event detection circuitry and responsive to said intermediate signal by providing said one or more control signals.

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