Infrared touch screen gated by touch force
First Claim
Patent Images
1. A touch-sensitive display device, comprising:
- a display;
a transparent plate provided in front of the display device;
a single tactile sensor mounted in contact with the transparent plate to a side surface of the transparent plate, sensing a touch event; and
a plurality of infrared sensors and a plurality of corresponding infrared emitters positioned in front of the transparent plate, wherein the plurality of infrared sensors identify a location of the touch event when the tactile sensor detects a touch event and when the tactile sensor does not detect a touch event, each of the plurality of infrared emitters remains inactive,wherein the single tactile sensor is mounted to the side surface of the transparent plate such that the single tactile sensor is beyond the range of perception of the plurality of infrared sensors.
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Abstract
A touch-sensitive display device includes a display. A transparent plate is provided in front of the display. A tactile sensor senses a touch event. One or more infrared sensors are positioned in front of the transparent plate. The one or more infrared sensors identify a location of the touch event when the tactile sensor detects a touch event.
70 Citations
21 Claims
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1. A touch-sensitive display device, comprising:
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a display; a transparent plate provided in front of the display device; a single tactile sensor mounted in contact with the transparent plate to a side surface of the transparent plate, sensing a touch event; and a plurality of infrared sensors and a plurality of corresponding infrared emitters positioned in front of the transparent plate, wherein the plurality of infrared sensors identify a location of the touch event when the tactile sensor detects a touch event and when the tactile sensor does not detect a touch event, each of the plurality of infrared emitters remains inactive, wherein the single tactile sensor is mounted to the side surface of the transparent plate such that the single tactile sensor is beyond the range of perception of the plurality of infrared sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for locating a touch event on a touch-sensitive display device, comprising:
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monitoring a single tactile sensor mounted in contact with a side surface of a transparent plate provided in front of the touch-sensitive display device to detect the occurrence of a touch event; when the occurrence of a touch event has been detected by the tactile sensor, identifying a location of the touch event based on a plurality of infrared sensors and a plurality of corresponding infrared emitters; and when the occurrence of a touch event has not been detected by the tactile sensor, each of the plurality of infrared emitters remains inactive, wherein the single tactile sensor is mounted to the side surface of the transparent plate such that the single tactile sensor is beyond the range of perception of the plurality of infrared sensors. - View Dependent Claims (12, 13)
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14. A method for retrofitting a touch-sensitive display, comprising:
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affixing a single tactile sensor to the touch-sensitive display, comprising a display device, a transparent plate provided in front of the display device, and one or more infrared sensors positioned in front of the transparent plate for identifying a position of a touch event, such that the tactile sensor is in vibrational communication with the transparent plate of the touch-sensitive display, wherein the single tactile sensor is mounted in contact with a side surface of the transparent plate; interfacing the tactile sensor to a microprocessor of the touch-sensitive display; and modifying logic of the touch-sensitive display such that infrared sensors of the touch-sensitive display remain inactive until a tactile event is observed by the tactile sensor, and are activated when the tactile event is observed by the tactile sensor. - View Dependent Claims (15, 16, 17, 21)
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18. A computer system comprising:
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a processor; and a program storage device readable by the computer system, embodying a program of instructions executable by the processor to perform method steps for locating a touch event on a touch-sensitive display device, the method comprising; monitoring a single tactile sensor mounted in contact with a side surface of a transparent plate provided in front of the touch-sensitive display device to detect the occurrence of a touch event; when the occurrence of a touch event has been detected by the tactile sensor, identifying a location of the touch event based on a plurality of infrared sensors and a corresponding plurality of infrared emitters; and when the occurrence of a touch event has not been detected by the tactile sensor, each of the plurality of infrared emitters remains inactive, wherein the single tactile sensor is mounted to the side surface of the transparent plate such that the single tactile sensor is beyond the range of perception of the plurality of infrared sensors. - View Dependent Claims (19, 20)
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Specification