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:
Jun. 05, 1979
Filed:
Nov. 25, 1977
Applicant:
Inventor:
Dale R DuVall, Keller, TX (US);
Assignee:
Recognition Equipment Incorporated, Irving, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
3401 / ; 250567 ; 358174 ;
Abstract
A scanned photocell array has the gain for each photocell channel automatically controlled by establishing a scale range based upon the media being scanned. The apparent gain of each cell is varied by modulating the reference input of an analog to digital converter at the photocell scan rate.
Quick Actions:
DuVall, Dale. (1979). Independent channel automatic gain control for self-scanning photocell (U.S. Patent No. 4157533). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4157533
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile