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:
Nov. 13, 1990
Filed:
Oct. 24, 1989
Applicant:
Inventor:
James A Karlock, Portland, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 27 ; 358 28 ; 358 37 ;
Abstract
A circuit for splitting a video signal into a chroma signal and a luminance signal comprises a resistor and a bandpass filter connected to the resistor. The bandpass filter passes a frequency component at the frequency of the color pilot burst. A chroma switch receives the frequency component passed by the bandpass filter, and is provided with a feedback transistor for reducing the input impedance of the chroma switch.
Karlock, James. (1990). Combined video processing circuit and image enhancer (U.S. Patent No. 4970583). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4970583
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile