Touch panel display

Details Touch panel display Touch panel display

1992-02-21

1993-03-23

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340784, 340765, 250221, 25022721, G09G 302

Patent

active

051968363

ABSTRACT:
A optical input device which can determine the location of a stylus in a field with only a single emitter and a single detector. A fiber-optic bundle is used to transmit energy from the emitter to the vertical and horizontal output sides of a bezel. The fiber-optic bundle returns energy from the input vertical and horizontal sides of the bezel to the detector. The bezel is covered by LCD masks which block energy transmission through the bezel. A multiplexor scans the LCD masks to allow a beam of energy to scan across the vertical and horizontal fields of the device. The location of a stylus is located by detecting an interrupted beam.

REFERENCES:
patent: 4247767 (1981-01-01), O'Brien et al.
patent: 4703316 (1987-10-01), Sherbeck
patent: 4733068 (1988-03-01), Theile et al.
patent: 4766424 (1988-08-01), Adler et al.
patent: 4847606 (1989-07-01), Beiswenger
patent: 4990901 (1991-02-01), Beiswenger
patent: 5001306 (1991-03-01), Purcell

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