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:
Mar. 06, 1990
Filed:
Sep. 01, 1988
Applicant:
Inventors:
Takashi Kobe, Yokohama, JP;
Masanori Ohtsuka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354435 ; 354437 ; 354439 ; 354458 ; 3542341 ;
Abstract
The present invention relates to an exposure control automatic device for a camera. A shutter controls the amount of the exposure; a detector detects the operation speed of the shutter and calculator device compares an output of the detector with a predetermined speed information to determine the exposure time.