Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1995-03-01
1997-04-29
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
345179, 178 18, G09G 302
Patent
active
056253826
ABSTRACT:
A display-integrated tablet consuming less power and capable of detecting positions only with top (row) electrodes of a matrix panel without using bottom (column) electrodes of the matrix panel with which position detection is difficult. A display-integrated tablet with a matrix panel having top (row) and bottom (column) electrodes, a top-electrode (row-electrode) drive, a bottom-electrode (column-electrode) driver, a top (row) electrode position detecting section, a bottom (column) electrode position detecting section having a memory storing detection voltage levels and x- and y-coordinate values corresponding to a certain number of dot positions on the panel, and a position detecting conductor, and performing display and position detection by means of time division. It is possible to decrease power consumption without supplying scanning pulses simultaneously to many electrodes (e.g. 20 electrodes) because scanning pulses are supplied only to top (row) electrodes to perform position detection in the position detection mode of the display-integrated tablet by using no bottom (column) electrode.
REFERENCES:
patent: 4639720 (1987-01-01), Rympalski et al.
patent: 4819194 (1989-04-01), Koizumi et al.
patent: 4841290 (1989-06-01), Nakano et al.
patent: 4853494 (1989-08-01), Suzuki
patent: 4886943 (1989-12-01), Suzuki et al.
patent: 5053757 (1991-10-01), Meadows
patent: 5231381 (1993-07-01), Duwaer
patent: 5298689 (1994-03-01), Mohri et al.
Ebihara Masaji
Nakato Yasusi
Hjerpe Richard
Lao Lun-Yi
Mitsubishi Denki & Kabushiki Kaisha
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