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. 16, 1976
Filed:
Jul. 22, 1974
Applicant:
Inventors:
Kenji Murase, Kakogawa, JA;
Shizuo Andoh, Kobe, JA;
Assignee:
Fujitsu Limited, Kawasaki, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
178 18 ; 3403 / ;
Abstract
A coordinate position information output device is disclosed in which the impedance at a position addressed by a contact pen, a light pen, a magnetic pen or the like is varied; a forward current is caused to flow by the impedance change in a charge storage diode; and a backward current flowing in the charge storage diode for a moment immediately thereafter is utilized as coordinate position information.