Method and apparatus for transitioning a device between operating states to control power consumed by the device

  • US 9,501,133 B2
  • Filed: 09/22/2014
  • Issued: 11/22/2016
  • Est. Priority Date: 12/10/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • accounting for an amount of transition time for a device to transition from a last state to a next state, wherein the amount of transition time is an amount of time between (i) an end time of the last state and (ii) a time when the device fully transitions to the next state, and wherein the last state and the next state are different ones of a first state, a second state and a powered off state;

    generating, via a processor, a first control signal based on the amount of transition time;

    receiving, at the device, a first output signal and the first control signal;

    consuming power, via the device, while operating in the first state and while operating in the second state, wherein the device consumes less power while operating in the first state than while operating in the second state;

    in response to the first control signal, transitioning the device to the second state based on a frequency of (i) the first output signal, or (ii) the first control signal;

    subsequent to transitioning to the second state, performing a function based on the first output signal;

    subsequent to performing the function, generating an output via the device;

    generating a feedback signal based on the output of the device; and

    based on the feedback signal, transitioning the device from the second state to either the first state or the powered off state.

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