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:
Jul. 01, 1997
Filed:
Mar. 22, 1994
Applicant:
Inventor:
Yasuo Iijima, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
395427 ; 395481 ; 395405 ; 3642442 ; 3642591 ; 364D / ; 235380 ; 235437 ;
Abstract
A data memory of an IC card is divided into a plurality of areas, a logic type used when data is written in each area is set, and the logical AND between the written data and stored data in the memory is calculated by an AND logic circuit and written in the memory. In read access, output data can be directly obtained from the memory.
Iijima, Yasuo. (1997). Data storage apparatus having memory area with a predetermined logic type (U.S. Patent No. 5644750). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5644750
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