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:
Sep. 03, 2013
Filed:
Jan. 23, 2009
Masahiro Okui, Kashiwa, JP;
Toshiyuki Fujine, Osaka, JP;
Yasushi Tetsuka, Osaka, JP;
Ryuichi Niiyama, Osaka, JP;
Masahiro Okui, Kashiwa, JP;
Toshiyuki Fujine, Osaka, JP;
Yasushi Tetsuka, Osaka, JP;
Ryuichi Niiyama, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Brightness expression without solid white pattern is enabled, and video expression with an improved black level is achieved. A distortion module () reduces the luminance of a backlight source according to the histogram of the video signal so that the contrast may be a predetermined target one. A configuration design unit () sets the gain according to the luminance level (BL) of the backlight source selected by the distortion module (). When setting the gain, the luminance level (BL) for reference of the backlight source preset according to the video feature value is referenced. If the video feature value meets a predetermined condition, the input video signal is always amplified with the gain. If not, depending on the relation between the BLand the BL, the input video signal is amplified or not.