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Providing power to an accessory during portable computing device hibernation

  • US 8,756,445 B2
  • Filed: 06/03/2010
  • Issued: 06/17/2014
  • Est. Priority Date: 01/06/2010
  • Status: Active Grant
First Claim
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1. A method of operating an accessory, the method comprising:

  • establishing a connection to a portable computing device that is external to the accessory;

    receiving operating power from the portable computing device via the connection;

    communicating a command from the accessory to the portable computing device indicating that the accessory should continue to receive power from the portable computing device when the portable computing device is in a hibernation mode, wherein communicating a command indicating that the accessory should continue to receive power from the portable computing device when the portable computing device is in the hibernation mode includes specifying a level of power that should be provided to the accessory during the hibernation mode; and

    while the portable computing device is in the hibernation mode;

    continuing to receive operating power at the accessory from the portable computing device via the connection in response to the command;

    detecting, by the accessory, an accessory event; and

    in response to the accessory event, sending a wake event signal from the accessory to the portable computing device, wherein the wake event signal signals the portable computing device to wake from the hibernation mode.

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