Method and apparatus for controlling access of stored data in a system having a plurality of information processing apparatuses connected to a network
AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Watanabe, Masaki Sagoh, Yasufumi Takada, Yosato Hitaka, Hajime Satow, Yoshiro Hikida, Naohiro Yoshikawa
Life of this patent
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Abstract
An information network is disclosed in which information to be made available to each of several information processing apparatuses is stored together with associated periods of accessibility; and the accessibility of the stored information to the information processing apparatuses is controlled according to the stored associated periods of accessability.
Claims21
In an information processing system having a plurality of information processing apparatuses connected to a network, the combination of:
- setting means for setting a period of accessibility to the data generated by each of said information processing apparatuses;
- storage means for storing the data generated by each of said information processing apparatuses together with the period of accessibility set by said setting means;
- and
- control means for controlling the accessibility of the stored data to selected ones of said information processing apparatuses,
- said control means including means for limiting the duration of accessibility of said stored data to said selected ones of said information processing apparatuses according to a stored period of accessibility, and, when said duration of accessibility ends, for prohibiting the access to said stored data of said selected ones of said information processing apparatuses.
A method of processing information in a system having a plurality of information processing apparatuses connected to a network, said method comprising the steps of:
- setting a period of accessibility to the data generated by each of said information processing apparatuses;
- storing data generated by each of said information processing apparatuses together with the period of accessibility set in said setting step;
- controlling the duration of accessibility by selected ones of said information processing apparatuses according to the stored period of accessibility;
- and, when said duration of accessibility ends,
- prohibiting the access to said stored data of said selected ones of said information processing apparatuses.
An information storage medium in which is stored a machine readable program for carrying out a method of processing information in a system having a plurality of information processing apparatuses connected to a network, said method comprising the steps of:
- setting a period of accessibility to the data generated by each of said information processing apparatuses;
- storing data generated by each of said information processing apparatuses together with the period of accessibility set in said setting step;
- controlling the duration of accessibility to selected ones of said information processing apparatuses according to the stored period of accessibility;
- and, when said duration of accessibility ends,
- prohibiting the access to said stored data of said selected ones of said information processing apparatuses.
Dependencies are inferred from the claim text.