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. 17, 1992
Filed:
Jul. 14, 1987
Applicant:
Inventors:
Youichi Seki, Yotsukaido, JP;
Hiroyuki Saito, Yotsukaido, JP;
Michio Kawai, Yotsukaido, JP;
Michio Taniwaki, Yotsukaido, JP;
Assignee:
Seikosha Co., Ltd., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
341126 ; 354426 ;
Abstract
An analog-to-digital converter for a camera has a reference signal generating element, a measurement signal generating element, and pulse output means for generating pulses of pule durations corresponding respectively to signals from the generating elements. The generating elements are alternately selected to produce two pulse durations, and the ratio of these two durations is computed by pulse duration ratio computing means. Control information corresponding to the computed ratio is retrieved from memory means.