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:
Oct. 16, 1984
Filed:
Jun. 10, 1981
Applicant:
Inventors:
Kohichi Nakamura, Tokyo, JP;
Yoshiyuki Morita, Tokyo, JP;
Assignee:
Seiko Instruments & Electronics Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G08C / ; G06F / ;
U.S. Cl.
CPC ...
364571 ; 178 18 ; 178 19 ; 364556 ;
Abstract
A coordinate determining device comprised of a tablet having a plurality of sensing lines disposed thereon, and a magnetic field generator positionable relative to the sensing lines for indicating the coordinates of the magnetic field generator position. Detecting circuitry detects induced electromotive voltages from the sensing lines, and an arithmetic control unit computes the position of the magnetic field generating coordinate indicator and corrects for position errors caused by inclination of the magnetic field generating coordinate indicator relative to the tablet having the sensing lines disposed thereon.