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:
Jan. 19, 1993
Filed:
Apr. 05, 1991
Kenichi Hiramatsu, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A pressure sensor for inputting finger characteristic data and an authenticity sensor for detecting whether a finger is authentic are arranged on the surface of an IC card. A finger can be placed on the pressure sensor and the authenticity sensor at the same time. Finger characteristic data is input by the pressure sensor. A controller calculates a sum signal from the input finger characteristic data, and collates the calculated sum signal with a reference sum signal of an owner of the card stored in a dictionary memory. An authenticity detecting circuit inputs data from the authenticity sensor, and detects whether a finger is authentic. If the finger is authentic and if a coincidence is determined between the calculated and reference sum signals, the use of the IC card is permitted.