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User setting information management method and management system for portable telephone

  • US 6,839,568 B2
  • Filed: 11/20/2001
  • Issued: 01/04/2005
  • Est. Priority Date: 11/22/2000
  • Status: Active Grant
First Claim
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1. A user setting information management method comprising the steps of:

  • when a predetermined event occurs, reading out user setting information stored in a built-in memory of a portable telephone to save the user setting information in a backup flash memory; and

    when the predetermined event is canceled, writing the user setting information saved in the flash memory in the built-in memory of the portable telephone, the save step having the steps of;

    dividing the flash memory into a plurality of independently erasable blocks;

    dividing each divided block into a user setting information area for writing user setting information to be backed up and a block management area for writing block management information for each block;

    generating a user setting information log representing a backup order as block management information for each block;

    comparing pieces of block management information of all blocks every occurrence of a predetermined event to identify a block having undergone oldest backup and a block having undergone newest backup;

    after data in the block having undergone oldest backup is erased, backing up data in the erased block; and

    writing block management information of the erased/backup block in the block having undergone newest backup.

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