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:
Mar. 28, 1989
Filed:
Jun. 14, 1988
Harumi Nakano, Tokyo, JP;
Kazutomo Tani, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
An IC card system uses at least one of the RESET, I/O, and CLOCK terminals of an IC card so as to serially and/or parallel input multivalue signals having different levels. The levels of the input signals are detected at a detector or detectors and outputs therefrom are compared at a comparator with specific codes prestored in level matrix of the IC card. If a coincidence between outputs obtained corresponding to the input signals and the specific codes is established, a test program stored in a test program ROM is started.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile