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:
Oct. 20, 1987
Filed:
Mar. 14, 1986
Applicant:
Inventor:
Junichi Yamanaka, Sagamihara, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 32 ; 358 34 ; 358164 ;
Abstract
In a pedestal control circuit, a reference signal is superposed on a video signal before gamma correction. The reference signal component is detected from the gamma-corrected video signal. The level of the detected reference signal component is compared with the level of a pedestal control signal. The level of the reference signal to be superposed on the video signal is controlled in accordance with the comparison result so that the pedestal level of the gamma-corrected video signal is constant.
Yamanaka, Junichi. (1987). Pedestal control circuit (U.S. Patent No. 4701786). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4701786
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile