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Error rejection for optical scroll wheel

  • US 20040021635A1
  • Filed: 12/26/2002
  • Published: 02/05/2004
  • Est. Priority Date: 07/31/2002
  • Status: Abandoned Application
First Claim
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1. A wireless interface device that services communications between a wirelessly enabled host and a wireless input device having a scroll wheel, comprising:

  • a wireless interface unit that wirelessly interfaces with the wirelessly enabled host;

    a processing unit operably coupled to the wireless interface unit;

    an input/output unit operably coupled to the wireless interface unit and to the processing unit, wherein the input/output unit also operably couples to the at least one user input device;

    a power management unit operably coupled to the wireless interface unit, the processing unit, and the input/output unit, wherein the power management unit controls the power consumption of the wireless interface device by;

    powering down the wireless interface unit and the processing unit during reduced power operations; and

    powering up the wireless interface unit and the processing unit based upon detection of a plurality of quadrature signal state transitions indicating activity by the scroll wheel.

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