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:
Jun. 11, 2013
Filed:
Aug. 24, 2010
Shogo Matsubara, Musashino, JP;
Shogo Matsubara, Musashino, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A video display apparatus includes: an area-specific lighting value calculator configured to calculate a lighting value of each of divided light source regions of a backlight and output the lighting value as numerical data; a signal output module configured to output a video signal correlated with the lighting value to a display module; a backlight controller configured to control the backlight based on the lighting value; a correction gain setting module configured to obtain a signal correction coefficient; a frequency separator configured to separate the input video signal; a signal corrector configured to correct the lighting value with respect to a low frequency component or DC component separated from the input video signal to suppress amplification of noise contained in a dark portion and generate an output video signal; and a display controller configured to control the display module to display the output video signal.