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. 23, 2013
Filed:
May. 15, 2008
Hidehiko Shidara, Tokyo, JP;
Ken Kikuchi, Tokyo, JP;
Yasuo Inoue, Tokyo, JP;
Masahiro Ito, Kanagawa, JP;
Hideto Mori, Tokyo, JP;
Hidehiko Shidara, Tokyo, JP;
Ken Kikuchi, Tokyo, JP;
Yasuo Inoue, Tokyo, JP;
Masahiro Ito, Kanagawa, JP;
Hideto Mori, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A display device is provided which includes: a still image detection unit () which inputs video signals having linear characteristic and calculates an average value of signal levels of the video signals having linear characteristic per pixel; a storage unit () which successively stores the average values calculated by the still image detection unit (); a still image judging unit () which judges whether a still image is displayed on a present screen based on a difference between the average value stored in the storage unit () and the last average value; a coefficient calculation unit () which calculates coefficients for reducing luminance of an image to be displayed when the still image judging unit () has judged that a still image is displayed on the present screen; and a signal level correction unit () which multiplies the video signals by the coefficients calculated by the coefficient calculation unit ().