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:
Nov. 13, 1979
Filed:
Apr. 19, 1978
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
In a camera provided with a data or auxiliary information recording device and an electronic flash device for illuminating an object scene to be photographed, another electronic flash device is provided for the illumination of data to be recorded. A single power source is used for both the above two electronic flash devices and an automatic exposure control circuit. To avoid a voltage drop of the power source during the operation of the exposure control circuit due to charging of the main capacitor for the electronic flash for the scene illumination, a power supply switch for the main capacitor charging circuit is manually closed independently of the camera exposure operation. A capacitor for energizing the electronic flash for the data illumination is charged in conjunction with the camera release operation before the camera exposure is commenced.