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:
Nov. 07, 1989
Filed:
Feb. 10, 1988
Masuo Tamada, Yokohama, JP;
Hitoshi Kokuryo, Sagamihara, JP;
Shinsuke Tamura, Yokohama, JP;
Hiroshi Ozaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An IC card comprises CPU, PROM for storing programs, and RAM for storing the results of arithmetic operations. PROM stores a table on which the names of specific programs are registered. RAM has execution counters which counts up each time each program is run so that the number of times the specific program is run is memorized. Prior to the running of each program by CPU, it is judged whether or not the program is a specific one. If it is the specific program, the execusion counter counts up. When the count value of the execution counter is above a predetermined value, the running of the specific program is prevented.