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:
Aug. 11, 1992
Filed:
Feb. 26, 1991
Applicant:
Inventor:
Hiroya Sugawa, Osaka, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
382 58 ; 382 51 ; 382 56 ; 382 63 ; 358464 ;
Abstract
An image reader having blank document detection circuitry for detecting whether the document is blank or not, the detection circuitry comparing the data to a predetermined threshold value by picture elements, counting the number of the data over the predetermined threshold value, and detecting the blank document when the counted number does not exceed a preset number. The control circuitry can discontinue the later image reading operation in response to the detection of the blank document.