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:
Oct. 20, 1981
Filed:
Apr. 25, 1979
Saburo Numata, Urawa, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
In a dual priority automatic exposure control camera in which the exposure control mode can be selected among aperture priority, shutter speed priority, program control and manual control, a mode change-over device is provided for selecting one of the exposure control modes. The mode change-over device includes a first signal generator which gives a first signal indicating whether the shutter speed is automatically controlled or manually selected, a second signal generator which gives a second signal indicating whether the aperture is automatically controlled or manually selected, and a mode discriminator connected with the two signal generators for discriminating the exposure control mode based on the combination of the first and second signals. The output of the mode discriminator is connected with an exposure control system to control the shutter speed and/or the aperture according to the discriminated mode of exposure control.