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. 09, 1990
Filed:
Apr. 16, 1987
Fumio Matsumoto, Tokyo, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In a photographic printing system, it is necessary to measure the density of an original film to determine its exposure value and to precisely control conveyance/suspension of the original film in order to optimally print the images of each frame. When an image sensor is used for measurement, the image sensor should have a relatively rough picture element density in order to perform the calculation of the exposure value at high speed, but should also have a fine density in order to precisely control the conveyance of the original film. In order to resolve the dilemma, image information from the original film is detected with an image sensor of a relatively low resolution, and then the resolution is increased by picture element pitch interpolation through moving the original film at a minute pitch, thereby achieving precise and fast detection and processing of image information.