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. 16, 2013
Filed:
Jan. 25, 2008
Eifu Nezu, Tokyo, JP;
Eifu Nezu, Tokyo, JP;
NEC Display Solutions, Ltd., Tokyo, JP;
Abstract
Unnecessary flare correction at the boundary between a blanking area and video signal area is suppressed. An image quality improving apparatus includes 2-dimensional low-pass filter circuitthat extracts low-frequency components from an input video signal; subtractor circuitthat obtains high-frequency components by subtracting the low-frequency components extracted by 2-dimensional low-pass filter circuitfrom the input video signal; and adder circuitthat adds the high-frequency components obtained by subtractor circuitas a correction signal to the input video signal. The input video signal contains blanking signals without any video information. 2-dimensional low-pass filter circuitstarts extraction of the low-frequency components after a lapse of a predetermined unit time from when the input video signal changed from the blanking signal to the signal that contains the video information.