System and method for controlling access to subject data using location data associated with the subject data and a requesting device

Patent 5922073 Issued on July 13, 1999. Estimated Expiration Date:

December 27, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventor

Shimada, Kazutoshi

Assignee

Canon Kabushiki Kaisha

Application

No. 773898 filed on 12/27/1996

Examiners

Primary: Palys, Joseph E.

Attorney, Agent or Firm

Fitzpatrick, Cella, Harper & Scinto

International Class

G06F 011/00

Foreign Application Priority Data

1996-01-10 JP

Abstract

Upon data access, an attribute-data extraction unit extracts location data and a password from attribute data which is added in advance to subject data to be accessed. At the time of requesting for an access to the data, the extracted password is compared with a password which is inputted from an input unit, and the extracted location data is compared with current location data detected by a location-data detection unit. An access permission unit permits access to the data in accordance with the comparison results obtained by the password comparison unit and the location-data comparison unit. By virtue of the process, it is possible to more strictly protect confidential information in a data processing apparatus.