Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-11-04
1996-12-03
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345174, 178 19, G06F 303, G09G 302
Patent
active
055812740
ABSTRACT:
A display-integrated type tablet device provided with a liquid crystal display panel has a mode detection circuit. During the display period, the circuit receives electrostatically induced voltages developed on a detection pen and compares the received electrostatically induced voltage with a previously set reference voltage. If the electrostatically induced voltage is greater than the reference voltage, the mode detection circuit decides that a coordinate detection mode exists, while if the electrostatically induced voltage is smaller than the reference voltage a non-detection mode is determined.
REFERENCES:
patent: 3904822 (1975-09-01), Kamm et al.
patent: 4686332 (1987-08-01), Greanias et al.
patent: 4719457 (1988-01-01), Kitajima et al.
patent: 4818851 (1989-04-01), Kimura
patent: 4839634 (1989-06-01), More et al.
patent: 5283556 (1994-02-01), Ise
patent: 5410329 (1995-04-01), Tagawa et al.
IBM Technical Disclosure Bulletin, "Method to Minimize the Effects of LCD M-signal Noise on the Operation of an Attached Sensor Screen", IBM Corp., 1993, vol. 34 Nr. 7B, pp. 435-436.
Patent Abstracts of Japan, vol. 12, No. 303 (p. 746), Aug. 18, 1988.
Conlin David G.
Daley, Jr. William J.
Fournier Kevin J.
Hjerpe Richard
Sharp Kabushiki Kaisha
LandOfFree
Display-integrated type tablet device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display-integrated type tablet device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display-integrated type tablet device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-788991