G - Physics – 09 – G
Patent
G - Physics
09
G
375/53, 340/135.
G09G 3/20 (2006.01) G06F 3/033 (2006.01)
Patent
CA 2006038
A tablet integrated with a display comprising a matrix panel having row and column electrodes, a detecting conductor, a row electrode driver, a column electrode driver, a row coordinate detecting circuit and a column coordinate detecting circuit, in case of display mode, the row electrode driver applying the row scanning pulse successively to every row electrode of the matrix panel from one to another, and the column electrode driver applying voltage in accordance with the display data simultaneously to the column electrode of the matrix panel each time the row scanning pulse is applied successively to the row electrode of the matrix panel, in case of row detection mode, the row electrode driver applying the row scanning pulse successively to the row electrode of the matrix panel, and receiving the row scanning pulse detected through electrostatic capacitive coupling caused by the detecting conductor touching an arbitrary position on the matrix panel, so as to present the row coordinate of the position which the detecting conductor touches, and in case of column detection mode, the column electrode driver applying the column scanning pulse successively to the column electrode of the matrix panel, and the column coordinate detecting circuit receiving the column scanning pulse detected through electrostatic capacitive coupling caused by the detecting conductor touching an arbitrary position on the matrix panel, so as to present the column coordinate of the position which the detecting conductor touches.
Marks & Clerk
Sharp Kabushiki Kaisha
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