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Reducing system power consumption due to USB host controllers

  • US 9,619,004 B1
  • Filed: 12/20/2006
  • Issued: 04/11/2017
  • Est. Priority Date: 12/20/2006
  • Status: Active Grant
First Claim
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1. A method of controlling a universal serial bus comprising:

  • during a first frame, querying at least one device on the universal serial bus according to a periodic schedule;

    thenduring N−

    1 frames, not querying at least one device on the universal serial bus according to the periodic schedule, though the device is scheduled to be queried;

    thenduring an Nth frame, querying at least one device on the universal serial bus according to the periodic schedule,wherein a value of N is progressively increased during a period of user inactivity.

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