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:
Jul. 20, 1976
Filed:
Jun. 09, 1975
Applicant:
Inventors:
Robert S Bradford, Woodland Hills, CA (US);
Peter Amass, Camarillo, CA (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
178-71 ; 178D / ;
Abstract
A video compensation network is disclosed in which the pedestal level and the peak white level of a composite video signal are automatically maintained within predetermined limits. The network includes two digital/feedback loops for independently detecting and generating correction signals which are used to control the respective pedestal and peak white levels. The feedback loops are activated to make incremental adjustments to the two levels once per video field.