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Information preservation on a portable electronic device

  • US 7,225,353 B1
  • Filed: 10/03/2001
  • Issued: 05/29/2007
  • Est. Priority Date: 10/03/2001
  • Status: Expired due to Term
First Claim
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1. A method for preserving information in a portable computer system comprising:

  • a) suspending user-initiated operation of said portable computer system at a first threshold of energy capacity remaining in a battery;

    b) responsive to a), maintaining information in volatile storage in a low power mode;

    c) generating a signal to indicate a second threshold of energy capacity remains in said battery; and

    d) responsive to c), copying information from said volatile storage to a non-volatile storage, wherein said information is permanent information.

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