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Wireless modem with CPU and auxiliary processor that shifts control between processors when in low power state while maintaining communication link to wireless network

  • US 8,364,857 B2
  • Filed: 08/31/2009
  • Issued: 01/29/2013
  • Est. Priority Date: 08/31/2009
  • Status: Active Grant
First Claim
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1. A method of operating a computer including a central processing unit (CPU) and an auxiliary processor, comprising:

  • communicating operating state information from the CPU to the auxiliary processor, wherein the auxiliary processor is a processor within a wireless modem coupled to the CPU;

    configuring the auxiliary processor using the operating state information;

    shifting control of computer peripherals to the auxiliary processor;

    placing the CPU into a low power or deactivated state; and

    maintaining a communication link with a wireless network via the wireless modem while control of computer peripherals is shifted to the auxiliary processor,wherein the CPU and the auxiliary processor are configured to anticipate operating mode transitions.

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