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. 02, 2003
Filed:
Jun. 22, 2000
Tatsuya Shiki, Tokyo, JP;
NEC LCD Technologies, Ltd., Kanagawa, JP;
Abstract
A clamping circuit for supplying a clamped color signal to a gamma-correction circuit is provided with a clamping portion connected to a clamping voltage generating circuit. The clamping voltage generating circuit generates a clamping voltage in response to an individual control signal in such a way that the black level of a color signal coincides with the black level in an input/output characteristic of the gamma-correction circuit. The clamping portion adds this clamping voltage to the pedestal level of a color signal at a predetermined timing in response to a control signal, so as to absorb variations in black levels of the clamping levels and later-stage circuits including variation in the later-stage circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile