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:
Mar. 06, 1984
Filed:
Dec. 02, 1981
Kowji Tanikawa, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
When a camera is loaded with a film cassette, information corresponding to the diameter of a film wind shaft with film wound thereon is detected by a film cassette type switch. An address of a ROM is designated by the shaft diameter information, and shaft rotation angle information corresponding to the designated address is read out from the ROM. The film wind shaft is rotated through an angle corresponding to the rotation angle information by the driving force of a pulse motor. When a fixed length of a film is wound on the film wind shaft, the shaft diameter information is updated, a new piece of rotation angle information is read out from the ROM in accordance with the updated shaft diameter information, and the film wind shaft is rotated to be wound with the constant length of the film in accordance with the updated rotation angle information.