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Hand-held data collection computer terminal having power management architecture including switchable multi-purpose input display screen

  • US 6,144,976 A
  • Filed: 09/27/1996
  • Issued: 11/07/2000
  • Est. Priority Date: 02/26/1993
  • Status: Expired due to Fees
First Claim
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1. A method for controlling the power consumption of a battery powered data terminal having a higher power processor and a lower power processor, comprising:

  • operating the data terminal in a higher power mode by controlling the data terminal with the higher power processor;

    sharing information processed by one of the higher and lower power processors with the other of the higher and lower power processors such that either of the higher and lower power processors may control the data terminal;

    monitoring for the occurrence of a predetermined condition;

    upon the occurrence of the predetermined condition, saving the states of the data terminal in a memory such that the states may be subsequently retrieved to restore the data terminal to a condition of operation at the time of the occurrence of the predetermined condition;

    operating the data terminal in a lower power mode by removing power from the data terminal including removing power from the higher power processor while maintaining power for the lower power processor such that the data terminal is controlled by the lower power processor;

    monitoring for the occurrence of a predetermined event with the lower power processor; and

    upon the occurrence of the predetermined event, restoring the operation of the data terminal to the condition of operation at the time of the occurrence of the predetermined condition by restoring power to the data terminal including applying power to the higher power processor and retrieving the states from memory whereby the data terminal is controlled by the higher power processor in a higher power mode.

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