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. 18, 1992
Filed:
Jun. 06, 1990
Applicant:
Inventors:
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
358483 ; 358406 ; 35821316 ; 355 30 ; 355 69 ; 250238 ;
Abstract
An image sensor is operable in a read state, a rest state, and a stand-by state. Control signal generating means generate a control signal. The control signal has a first constant preset level during the read state, a second preset level during the rest state, and alternates between the first and second levels at a duty ratio during the stand-by state. Drive circuit means transfer current to the image sensor in response to the control signal. Therefore, current is continuously transferred to the image sensor during the read state, no current is transferred during the rest state, and current is intermittently transferred to the image sensor at the duty ratio during the stand-by state.