Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2004-03-24
2008-09-02
Dharia, Prabodh (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S690000, C345S692000
Reexamination Certificate
active
07420576
ABSTRACT:
A display apparatus displaying gray scale by using a subfield method has a gain control circuit, a sub gain control circuit, and an error diffusion circuit. The gain control circuit has the number of gray scale levels of an input signal and outputting a first intermediate image signal with a first number of gray scale levels, and the sub gain control circuit receives the first intermediate image signal, compresses the number of gray scale levels of the first intermediate image signal, and outputs a second intermediate image signal with a second number of gray scale levels. The error diffusion circuit receives the second intermediate image signal and increase the number of gray scale levels by simulating additional gray scale levels through error diffusion.
REFERENCES:
patent: 4739411 (1988-04-01), Bolton
patent: 5474081 (1995-12-01), Livingstone et al.
patent: 5756981 (1998-05-01), Roustaei et al.
patent: 6036637 (2000-03-01), Kudo
patent: 6144364 (2000-11-01), Otobe et al.
patent: 6208467 (2001-03-01), Naka et al.
patent: 6304238 (2001-10-01), Tsuchida
patent: 6414658 (2002-07-01), Tokunaga
patent: 6477588 (2002-11-01), Yerazunis et al.
patent: 6496194 (2002-12-01), Mikoshiba et al.
patent: 6512854 (2003-01-01), Mucci et al.
patent: 6541914 (2003-04-01), Ahn
patent: 6646625 (2003-11-01), Shigeta et al.
patent: 6690388 (2004-02-01), Kasahara et al.
patent: 6741227 (2004-05-01), Naka et al.
patent: 6919892 (2005-07-01), Cheiky et al.
patent: 6950551 (2005-09-01), Murashita et al.
patent: 6989824 (2006-01-01), Ishii et al.
patent: 7138967 (2006-11-01), Kimura
patent: 7209152 (2007-04-01), Chiaki et al.
patent: 7212178 (2007-05-01), Ishii et al.
patent: 7256755 (2007-08-01), Ohta et al.
patent: 2001/0028347 (2001-10-01), Kawahara et al.
patent: 2002/0089514 (2002-07-01), Kitahara et al.
patent: 2002/0130826 (2002-09-01), Otobe et al.
patent: 2003/0090447 (2003-05-01), Kimura
patent: 2004/0041754 (2004-03-01), Inukai
patent: 2004/0090434 (2004-05-01), Miyazawa
patent: 2004/0155835 (2004-08-01), Ishii et al.
patent: 2004/0263538 (2004-12-01), Ohta et al.
patent: 2007/0067104 (2007-03-01), Mays
patent: 10-031455 (1998-02-01), None
patent: 11-085101 (1999-03-01), None
patent: 2002-082649 (2002-03-01), None
Chiaki Yutaka
Ohta Shunji
Tajima Masaya
Takeuchi Masanori
Yamamoto Akira
Dharia Prabodh
Fujitsu Hitachi Plasma Display Limited
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