Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-06-20
1997-11-04
Brier, Jeffery
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345179, G09G 320
Patent
active
056845057
ABSTRACT:
A display device integrated with an input device comprises a display panel having picture elements being scanned line-at-a-time,
a detector for detecting a voltage pulse applied on one of the picture elements through electrostatic coupling,
a first circuit for applying a voltage pulse of a type differing with a plurality of regions into which the display panel are divided, on electrodes associated with the picture element in one of the plurality of regions during the non-display period,
a second circuit for determining a region of the picture element by the type of the voltage pulse detected by the detector,
a fourth circuit for determining a relative X coordinate in the determined region by counting clock pulses synchronized with sequential application of a voltage on electrodes until the fourth circuit receives the voltage pulse detected by the detector during the non-display period, and
a fifth circuit for determining an absolute X-coordinate by the determined region and the relative X-coordinate.
REFERENCES:
patent: 5418551 (1995-05-01), Ise
patent: 5528267 (1996-06-01), Ise
patent: 5534892 (1996-07-01), Tagawa
Furuhashi Tsutomu
Futami Toshio
Hamada Tatsuzo
Kitajima Masaaki
Mano Hiroyuki
Brier Jeffery
Hitachi , Ltd.
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