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:
May. 21, 1985
Filed:
Jan. 04, 1982
Applicant:
Inventor:
Tsuyoshi Ishida, Yokohama, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01N / ; G07D / ; G06K / ;
U.S. Cl.
CPC ...
324228 ; 1941 / ; 235449 ; 324235 ;
Abstract
A paper note containing a magnetic strip is transported along a path and adjacent a magnetic detector. This magnetic detector comprises a magnet and a magnetic resistance element provided in the magnetic field generated by the magnet. When the magnetic strip passes through this magnetic field, the change in the field is detected by circuitry. This circuitry detects the change in resistance of the magnetic resistance element. By checking the change in resistance of the resistance element and comparing it with a predetermined value, the existance or non-existance of the magnetic strip can be determined.