INFRARED RAYS TOUCH SCREEN APPARATUS USING ARRAY OF INFRARED RAYS ELEMENTS IN TWO OPPOSITE SIDES
First Claim
1. An infrared rays touch screen apparatus using an array of infrared elements in two opposite sides comprising:
- a plurality of infrared rays transmitting elements arranged sequentially in a first direction;
a plurality of infrared rays receiving elements arranged sequentially in the first direction and in the opposite side of the plurality of infrared rays transmitting elements to receive infrared rays transmitted from the plurality of infrared rays transmitting elements; and
a touch control unit which is operated in a first scan control mode which controls the plurality of infrared rays receiving elements and the plurality of infrared rays transmitting elements such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged in the opposite side and which is operated in a second scan control mode which controls such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged diagonally to the infrared rays receiving element;
wherein the touch control unit detects the first touch coordinates of the first direction by the operation in the first scan control mode, and detects the second touch coordinates of the second direction perpendicular to the first direction on the basis of the first touch coordinates of the first direction and a preliminary coordinates of the first direction detected by the operation in the second scan control mode.
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Accused Products
Abstract
The present invention relates to an infrared rays touch screen apparatus using an array of infrared elements in two opposite sides comprising: a plurality of infrared rays transmitting elements arranged sequentially in a first direction; a plurality of infrared rays receiving elements arranged sequentially in the first direction and in the opposite side of the plurality of infrared rays transmitting elements to receive infrared rays transmitted from the plurality of infrared rays transmitting elements; and a touch control unit which is operated in a first scan control mode which controls the plurality of infrared rays receiving elements and the plurality of infrared rays transmitting elements such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged in the opposite side and which is operated in a second scan control mode which controls such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged diagonally to the infrared rays receiving element; wherein the touch control unit detects the first touch coordinates of the first direction by the operation in the first scan control mode, and detects the second touch coordinates of the second direction perpendicular to the first direction on the basis of the first touch coordinates of the first direction and a preliminary coordinates of the first direction detected by the operation in the second scan control mode. Accordingly, the single-touch and multi-touch are able to be sensed by a plurality of infrared rays transmitting elements and infrared rays receiving elements arranged which are arranged in the two opposite sides on the screen, thereby the manufacturing cost can be reduced significantly.
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Citations
7 Claims
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1. An infrared rays touch screen apparatus using an array of infrared elements in two opposite sides comprising:
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a plurality of infrared rays transmitting elements arranged sequentially in a first direction; a plurality of infrared rays receiving elements arranged sequentially in the first direction and in the opposite side of the plurality of infrared rays transmitting elements to receive infrared rays transmitted from the plurality of infrared rays transmitting elements; and a touch control unit which is operated in a first scan control mode which controls the plurality of infrared rays receiving elements and the plurality of infrared rays transmitting elements such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged in the opposite side and which is operated in a second scan control mode which controls such that each infrared rays receiving element receives infrared rays from the infrared rays transmitting elements arranged diagonally to the infrared rays receiving element; wherein the touch control unit detects the first touch coordinates of the first direction by the operation in the first scan control mode, and detects the second touch coordinates of the second direction perpendicular to the first direction on the basis of the first touch coordinates of the first direction and a preliminary coordinates of the first direction detected by the operation in the second scan control mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification