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:
Jun. 25, 1991
Filed:
Sep. 16, 1988
Applicant:
Inventors:
Assignees:
Ricoh Company, Ltd., Tokyo, JP;
Rocoh Research Institute of General Electronics, Natori, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
358482 ; 35821311 ;
Abstract
A contact type image sensor has a driving circuit part which sequentially drives a plurality of photoelectric conversion elements of a photodetector in blocks which respectively have an arbitrary number of photoelectric conversion elements. The driving circuit part has a pair of shift registers, one for sequentially selecting the block and the other for sequentially selecting each of the photoelectric conversion elements within the selected block.