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. 15, 1991
Filed:
Aug. 29, 1989
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G06K / ;
U.S. Cl.
CPC ...
250559 ; 250556 ; 356 71 ;
Abstract
In a medium detecting system having a plurality of optical sensors, each including a light-emitting element and a light-receiving element whose current varies with the amount of light received, and a load resistance unit provided in common for the sensors, the resistance of the load resistance circuit can be varied in accordance with load resistance selecting data supplied thereto. A sensor selector is responsive to sensor selecting data for selecting one of the sensors and connecting the light-receiving element of the selected sensor to the load resistance unit. A rewritable memory stores the sensor selecting data and data used for selecting the load resistance.