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:
Apr. 29, 1980
Filed:
Nov. 06, 1978
Hendrik Blom, Breda, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A combined gamma and aperture (or contour) correction circuit for the picture signal in a television camera, the aperture correction signal having signal values, which are negative and positive-going relative to a reference value, being split into a negative and a positive aperture correction signal. The positive correction signal is added to the picture signal before gamma correction and the negative correction signal is added to the picture signal after the gamma correction. The result is an improved aperture and contour correction, respectively, and less noise in the contours in the darker picture portions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile