Computer graphics processing and selective visual display system – Display driving control circuitry – Waveform generator coupled to display elements
Reexamination Certificate
2006-07-18
2006-07-18
Chang, Kent (Department: 2675)
Computer graphics processing and selective visual display system
Display driving control circuitry
Waveform generator coupled to display elements
C345S094000
Reexamination Certificate
active
07079124
ABSTRACT:
For a gradation displaying operation of an electro-optical device, a gradation display method and an electro-optical device therefor which can be controlled with a digital signal, and which is hard to be affected by variation in characteristics between elements and can achieve high gradation display are provided. In the active matrix type of electro-optical device and method, the input analog signal is converted to a numerical value of N-radix notation, and pulses whose pulse height and width correspond to the numerical value. By applying these plural pulses to each picture element electrode, an average voltage of one frame of an image can be made an arbitrary value to finally display an intermediate color tone or gradation. The display device comprises a device for converting an input analog signal to a digital signal, a device for converting the digital signal to a numerical value of N-radix notation or a digital signal corresponding thereto (including digital signal), and a device for inputting this signal to an active matrix type device.
REFERENCES:
patent: 3688100 (1972-08-01), Goldsberry
patent: 4130777 (1978-12-01), De Jule
patent: 4427978 (1984-01-01), Williams
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4694349 (1987-09-01), Takeda et al.
patent: 4743096 (1988-05-01), Wakai et al.
patent: 4766430 (1988-08-01), Gillette et al.
patent: 4775891 (1988-10-01), Aoki et al.
patent: 5010327 (1991-04-01), Wakita et al.
patent: 5010328 (1991-04-01), Morris et al.
patent: 5053764 (1991-10-01), Barbier et al.
patent: 5091722 (1992-02-01), Kitajima et al.
patent: 5136618 (1992-08-01), Wright, Jr.
patent: 5153483 (1992-10-01), Kishino et al.
patent: 5168270 (1992-12-01), Masumori et al.
patent: 5488387 (1996-01-01), Maeda et al.
patent: 6215466 (2001-04-01), Yamazaki et al.
patent: 0 387 033 (1990-09-01), None
patent: 50-051693 (1975-05-01), None
patent: 61-103199 (1986-05-01), None
patent: 62-262030 (1987-11-01), None
patent: 63-182695 (1988-07-01), None
patent: 03-020780 (1991-01-01), None
patent: 5-35218 (1993-02-01), None
Specification, claims, and abstract of U.S. Appl. No. 09/592,267, filed Jun. 13, 2000.
Hiroki Masaaki
Takemura Yasuhiko
Yamazaki Shunpei
Chang Kent
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
LandOfFree
Active matrix display device and driving method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active matrix display device and driving method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix display device and driving method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3566471