×

Method and apparatus for battery power pre-check at system power-on

  • US 7,558,798 B2
  • Filed: 12/02/2003
  • Issued: 07/07/2009
  • Est. Priority Date: 09/29/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system comprising:

  • at least one electronic component;

    a back-up battery to provide a back-up voltage supply on a back-up supply node;

    a battery check circuit to be powered by the back-up voltage supply and to determine, in response to an attempt at system power-on, whether to provide power from a battery different than said back-up battery to the at least one electronic component by comparing the battery'"'"'s power level to a predetermined power level.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×