The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1993
Filed:
Apr. 06, 1989
Applicant:
Inventor:
Akio Kato, Osaka, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
235435 ; 235380 ; 235492 ;
Abstract
An improved IC card to be inserted in a data processing unit, for communicating data therewith includes: a memory for storing data having a validity term to be transferred to the data processing unit; a timer for determining whether specified time is within the term or not; and a data validity determining unit which does not transfer the data to the data processing unit when the data is not within the validity term. The memory stores not only the data having the term but also its validity term. Accordingly, data for control of the validity term of the data does not need to be prepared outside the IC card.