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:
Jul. 30, 1991
Filed:
Jun. 18, 1990
Nobuyuki Taniguchi, Tondabayashi, JP;
Masatake Niwa, Sakai, JP;
Akira Fujii, Sennan, JP;
Takeo Hoda, Sakai, JP;
Masaaki Nakai, Kitakatsuragi, JP;
Minoru Sekida, Sakai, JP;
Masayoshi Sahara, Sennan, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A camera has an automatic data reading arrangement for reading ISO data provided on a film cartridge. When a main battery is exchanged with an old battery while the film is still loaded in the camera, ISO data is maintained in a memory supported and powered by a back-up battery. If such an ISO data is not available after the exchange of the main battery, ISO data again read from the loaded film cartride is employed. If the film is not the type that can provide an ISO data, the most widely used ISO data will be automatically set for the further exposure calculation.