Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-06-24
1997-06-10
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345211, 330260, G09G 318
Patent
active
056380879
ABSTRACT:
A liquid crystal display apparatus is driven by a voltage averaging method. The display apparatus is provided with voltages via a scanning circuit and a driver circuit from a power supplying circuit. The power supplying circuit has a voltage compensating circuit which is provided with an operational amplifier whose first input terminal is provided with a predetermined voltage and whose second input terminal is connected to an output terminal thereof through a resistor, an impedance circuit connected between the output terminal of the operational amplifier and an output terminal of the power supplying circuit, and feedback circuit for feeding back both of an alternating current component and a direct current component of an output of the impedance circuit to the second input terminal of the operational amplifier.
REFERENCES:
patent: 3512101 (1970-05-01), Ellermeyer
patent: 5117298 (1992-05-01), Hirai
patent: 5191278 (1993-03-01), Carpenter
R. D. Gillingham "Differential Amplifier with DC Restore" IBM Technical Disclosure Bulletin vol. 23 No. 9 Feb. 1981.
Ross Nimno "Composite Buffer Provides Speed and Accuracy" Design Ideas Electronic Product Design, Aug. 1981 vol. 2 Iss. 8.
Iwasaki Shoji
Kobayashi Norimitsu
Tanaka Toshihiko
Hjerpe Richard
Lao Lun-Yi
Sanyo Electric Co,. Ltd.
Tottori Sanyo Electric Co. Ltd.
LandOfFree
Dot matrix type liquid crystal display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dot matrix type liquid crystal display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dot matrix type liquid crystal display apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-768501