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:
Feb. 24, 2015
Filed:
Jun. 27, 2012
Toshiyuki Fujine, Osaka, JP;
Tomoharu Noutoshi, Osaka, JP;
Yoji Shiraya, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A video display device increases a feeling of brightness and expresses a video with high contrast by detecting a part of a video signal that emits light, enhancing the display luminance of the light-emitting part, and displaying the part. A light emission detection portion () uses a prescribed feature quantity related to the brightness of an input video signal, predetermines the light emission quantity for the video signal on the basis of the relationship with the feature quantity, and detects the light emission quantity for each input video signal frame from the feature quantity. A backlight luminance stretch portion () stretches the light source luminance of the backlight according to the light emission quantity detected. A video signal luminance stretch portion () stretches the video signal according to the light emission quantity or the luminance distribution of the input video signal.