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:
Dec. 31, 1985
Filed:
Jun. 21, 1983
Hiroichi Sokei, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an NTSC system color television camera with a shading correction circuit, the correction circuit comprises differential amplifier means for comparing a level difference between Y and R signals and between Y and B signals to produce analog difference signals, analog-to-digital converter means for converting levels resulting from sampling the analog signals by clock pulses into digital signals, a random access memory for storing and reading the digital signals, and shading amplifier means responsive to the read-out signals to perform such an amplification that the chrominance signal level is made equal to the luminance signal level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile