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Operating input device in low power mode with auxiliary sensor calibrated to main sensor

  • US 8,918,665 B2
  • Filed: 09/23/2011
  • Issued: 12/23/2014
  • Est. Priority Date: 09/23/2011
  • Status: Active Grant
First Claim
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1. A method for reducing power consumption of an input device having an auxiliary sensor and a main sensor, the method comprising:

  • calibrating the auxiliary sensor in accordance with a comparison between an input of the auxiliary sensor and an input of the main sensor;

    entering, by a processor, the input device into a sleep mode in which the auxiliary sensor is in an active mode and the main sensor is in the sleep mode;

    detecting, by the auxiliary sensor, a user input received by the input device from a user;

    waking, by the processor, the main sensor; and

    placing the main sensor in the sleep mode in response to the auxiliary sensor and the main sensor detecting no user input over a predetermined time period.

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