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:
Sep. 13, 1988
Filed:
Mar. 04, 1985
Applicant:
Inventors:
Masuo Ogihara, Yotsukaido, JP;
Hajime Oda, Yotsukaido, JP;
Yoichi Seki, Yotsukaido, JP;
Hiroshi Yamazaki, Yotsukaido, JP;
Assignee:
Seikosha Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354421 ; 354137 ;
Abstract
A strobo control circuit for a program shutter which opens or closes sectors by means of a stepping motor, wherein a data ROM (read-only memory) is accessed in accordance with a value obtained by computing a code representative of a distance to a subject, a film speed and so forth, and after the data stored in the ROM is set in a timer circuit, the timer is started synchronously with start of the stepping motor to produce a strobo trigger signal upon termination of the timer action.