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. 21, 1984
Filed:
Jan. 27, 1982
Shinji Nagaoka, Shikawatashi, JP;
Koji Sato, Shikawatashi, JP;
Seiko Koki Kabushiki Kaisha, Tokyo, JP;
Abstract
A camera shutter utilizes a single photoelectric element in conjunction with a shutter control circuit for controlling the automatic exposure operation of the shutter in dependence on the integrated value of the ambient light received from an object field being photographed, and a flash control circuit for controlling the timing and duration of the flash in dependence on the total integrated value of the ambient light and flashlight received from the object field. The shutter control circuit effects control of the shutter operation before operation of the flash control circuit so that the automatic exposure operation and the flash operation are carried out in series. By such an arrangement, the flash system is operated within the time lag which occurs between the production of a shutter closing signal and the actual start of the shutter closing operation.