Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2004-05-04
2008-08-19
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S089000
Reexamination Certificate
active
07414608
ABSTRACT:
An image display apparatus and method provided for visually improving a sense of contrast by adjusting contrast and a light source to have a correlation. A characteristics detection part detects MAX, MIN, and APL (average) of an input signal. A control data generation part calculates Gain for amplifying a difference between MAX and MIN to a width of a dynamic range and Offset indicating the DC level to be shifted so that the input video signal amplified by Gain falls within the output dynamic range of a DC level adjustment part. A signal amplitude adjustment part amplifies the input video signal with reference to APL and in accordance with Gain. The DC level adjustment part shifts the DC level of the amplified input video signal in accordance with a value of Offset. A light source control part controls a light source so that a visual brightness level on a screen is equal to a brightness level of the input video signal.
REFERENCES:
patent: 5313292 (1994-05-01), Wood et al.
patent: 5406305 (1995-04-01), Shimomura et al.
patent: 5717422 (1998-02-01), Fergason
patent: 6111559 (2000-08-01), Motomura et al.
patent: 6384809 (2002-05-01), Smith
patent: 6388388 (2002-05-01), Weindorf et al.
patent: 6388649 (2002-05-01), Tanaka et al.
patent: 6414664 (2002-07-01), Conover et al.
patent: 7053881 (2006-05-01), Itoh
patent: 7064740 (2006-06-01), Daly
patent: 7113164 (2006-09-01), Kurihara
patent: 2003/0146919 (2003-08-01), Kawashima et al.
patent: 2004/0008177 (2004-01-01), Ahn
patent: 2004/0257329 (2004-12-01), Park et al.
patent: 2146060 (1995-10-01), None
patent: 62-19835 (1987-01-01), None
patent: 01-136127 (1989-05-01), None
patent: 1-239589 (1989-09-01), None
patent: 2-28184 (1990-02-01), None
patent: 02261267 (1990-10-01), None
patent: 2-311818 (1990-12-01), None
patent: 4-88697 (1992-07-01), None
patent: 5-66501 (1993-03-01), None
patent: 5-127608 (1993-05-01), None
patent: 7-130477 (1995-05-01), None
patent: 8-201812 (1996-08-01), None
patent: 11-65531 (1999-03-01), None
patent: 11-109317 (1999-04-01), None
Supplemental European Search Report issued Mar. 6, 2008 in the corresponding European patent application.
“Back Light Power Reduction by Optimizing Gray Level Range of Software”,IBM Technical Disclosure Bulletin,vol. 40, No. 11, Nov. 1997 (XP000739965).
Arimoto Katsuyuki
Funamoto Taro
Kobayashi Takahiro
Machidori Wataru
Ota Yoshihito
Hjerpe Richard
Matsushita Electric - Industrial Co., Ltd.
Sheng Tom V
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Image display apparatus and image display method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image display apparatus and image display method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image display apparatus and image display method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4004084