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:
Jan. 13, 1981
Filed:
Jan. 05, 1979
Seijiro Tokutomi, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A manual setting device is provided in a camera wherein the shutter speed is electrically controlled. The manual setting device can be used as an alternate control in an automatic exposure control camera or may be used in a non-automatic electrically controlled camera. For a camera having an electrically controlled shutter speed, first and second counters are provided. The first counter is preset to a computed or desired shutter speed, and the output of the first counter corresponding to the shutter speed is displayed by LEDs in the viewfinder of the camera. The second counter operates in response to an oscillator, and when the count accumulated in the second counter equals that of the first counter, the shutter bottom curtain electromagnet is operated. The manual setting device is a pulse generator controlled by a switch to preset the counter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile