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:
Feb. 27, 1990
Filed:
Nov. 16, 1987
Applicant:
Inventor:
Eiichi Yukino, Kanagawa, JP;
Assignee:
Hitachi Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
235379 ; 235492 ; 902-5 ; 902 26 ; 34082534 ; 380 24 ;
Abstract
An identification authenticating system includes a first memory for storing a program to perform a preselected calculation on an input value to obtain an expected result. An input value is supplied to the program wherein calculation is performed thereon. An external signal is supplied, and that signal is compared the expected result. A comparison determines whether the expected result and input value correspond to one another, thereby authenticating an identification.