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:
Sep. 19, 1989
Filed:
May. 26, 1988
Kazunari Kobayashi, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A video converter can be mounted on an optical endoscope which has an image guide capable of transmitting an optical image formed by an objective optical system. The video converter incorporates a solid-state imaging device having a plurality of pixels. The levels of the outputs from the pixels of the solid-state imaging device are compared with a dark current level, and the size of the imaging area of the image guide is detected from the result of the comparison. A photo-sensing/imaging area scaling signal is selected or generated in accordance with the result of detection if the imaging area of the image guide, and the intensity of the illuminating light is controlled in accordance with the actual imaging area which is determined by incorporating the photo-sensing/imaging area scaling signal.