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:
Dec. 16, 1997
Filed:
Jul. 31, 1995
Applicant:
Inventor:
Shuzo Fujioka, Hyogo, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Electric Semiconductor Software Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
235492 ; 235380 ;
Abstract
In an IC card, a user area is set to have a first area in which a write password is made valid, and a second area in which a read password is made valid. When a write command for the first area is sent together with a password from a read/write apparatus, the password is collated with the write password. When a read command for the second area is sent together with a password, the password is collated with the read password. As a result of the collation, when the passwords are identical, the respective commands are executed.