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. 23, 1982
Filed:
Nov. 20, 1979
Applicant:
Inventor:
Saburo Numata, Urawa, JP;
Assignee:
Fuji Photo Optical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 250578 ;
Abstract
A number of photoreceptors are arranged in a matrix along X-lines and Y-lines. An X-direction multiplexer and a Y-direction multiplexer are connected with the X-lines and Y-lines, respectively. Log-conversion amplifiers are connected at the input of the Y-direction multiplexer to log-compress the output of the photoreceptor before it is inputted into the Y-direction multiplexer. All the circuitry including the photoreceptors, multiplexers and amplifiers are deposited on a single chip to make an IC element.
Numata, Saburo. (1982). Light measuring device (U.S. Patent No. 4321462). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4321462
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile