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. 01, 1990
Filed:
May. 20, 1988
Applicant:
Inventors:
Seiji Hashimoto, Yokohama, JP;
Tadanori Harada, Tokorozawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307482 ; 307453 ; 307481 ; 307578 ; 377 79 ;
Abstract
There is provided a scan circuit in which a plurality of unit circuits are connected and scan pulses are sequentially output from the unit circuits in response to drive pulses. In this circuit, the potential at an output terminal of the unit circuit is raised by one drive pulse. The potential at the output terminal is further increased by use of the bootstrap effect by the other drive pulse, thereby forming a scan pulse.