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. 25, 1981
Filed:
Aug. 02, 1979
Masahiro Kawasaki, Tokyo, JP;
Sinji Urata, Tachikawa, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A device for controlling a camera according to whether or not a flashgun is mounted on the camera and whether or not the flashgun is charged. The camera operation may be an electrically controlling an automatic shutter operation or a manual shutter operation. An input terminal transmits a charge signal of the flashgun and a detection switch determines whether or not the flashgun is mounted on the camera. In a first state in which a flashgun with a charge signal terminal is mounted on the camera but the flashgun is not charged yet, the detection switch is turned on or off. A voltage lower than a predetermined value is applied to the input terminal, and an ordinary automatic shutter control or an ordinary manual shutter control is obtained according to information provided by the detection switch and information provided by the input terminal. In a second state in which the flashgun mounted on the camera has been charged, the detection switch is turned on or off, a voltage higher than said predetermined value is applied to the input terminal, and a flash synchronization shutter control is obtained according to information provided by the detection switch and information provided by the input terminal. In a third state in which a flashgun having no charge signal terminal is mounted on the camera, the detection switch is merely turned on or off, the input terminal is in open state, and the X shutter control is obtained according only to information provided by the detection switch.