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Mobile telephone power key lock function

DC
  • US 5,812,954 A
  • Filed: 11/27/1995
  • Issued: 09/22/1998
  • Est. Priority Date: 11/27/1995
  • Status: Expired due to Term
First Claim
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1. A method for operating a mobile phone of a type having a key pre-defined as a power-on key and a plurality of other keys, comprising the steps of:

  • defining at least one of the keys to represent a secondary power-on key;

    during a time that the mobile phone is in an off-state, sensing that the power-on key has been activated;

    placing the mobile phone in a partially on-state;

    determining, within a predetermined period of time, if the at least one secondary power-on key has been activated; and

    if the step of determining indicates that the at least one secondary power-on key has not been activated within the predetermined period of time, restoring the mobile phone to the off-state.

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