Automatic update of file versions for files shared by several computers which record in respective file directories temporal information for indicating when the files have been created

  • US 5,909,689 A
  • Filed: 09/18/1997
  • Issued: 06/01/1999
  • Est. Priority Date: 09/18/1997
  • Status: Expired due to Term
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First Claim
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1. A method for updating a data file among a plurality of file directories located in corresponding computers which record in respective file directories temporal information indicating when said data file has been created, at least two of said file directories containing two versions of said data file, said method comprising the steps of:

  • accessing said respective file versions in said each file directory;

    obtaining said temporal information on said respective file versions indicating when said each file version has been created;

    obtaining and comparing system clock values from said each computer, and adjusting the obtained temporal information for said each file version if there is a difference between the obtained system clock values;

    determining which of said respective file versions is a more current file version based on the obtained temporal information; and

    replacing a less current file version by said more current file version by copying said more current file version from the corresponding file directory and transferring said more current file version to the corresponding directory of said less current file version, such that said more current file version is maintained in said each file directory.

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