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Data management method and system with management table indicating right of use

  • US 5,291,596 A
  • Filed: 02/16/1993
  • Issued: 03/01/1994
  • Est. Priority Date: 10/10/1990
  • Status: Expired due to Term
First Claim
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1. A method of managing a plurality of data in an information processing network having a plurality of information processing workstations, each having first data storage means for storing the plurality of data and first memory means, a management workstation having second memory means for storing a management table, connecting means for connecting the plurality of information processing workstations to the management workstation, wherein the management table includes for each one of the plurality of data a first value indicating a number of residual copies available for use by the plurality of information processing workstations, a second value indicating an amount of residual time that each one of the plurality of data can be used by the plurality of information processing workstations, and a third value indicating an estimated duration of use, the method comprising the steps of:

  • requesting, by one of the plurality of information processing workstations from the management workstation via the connecting means, a right of use for at least one of the plurality of data;

    granting, by the management workstation, the right of use whenever the first and second values are greater than zero, otherwise denying the right of use;

    subtracting, upon granting the request for right of use, one from a first value and subtracting a third value from a second value, all the values corresponding to the at least one of the plurality of data;

    transferring the at least one of the plurality of data from the first storage means to the first memory means of the requesting one of the plurality of information processing workstations; and

    storing, by the requesting one of the plurality of information processing workstations, the transferred at least one of the plurality of data in the first memory means of the requesting one of the plurality of information processing workstations.

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