DEVICES AND METHODS FOR USING AN INFRARED-PROJECTED CAPACITIVE (IR-PCAP) TOUCHSCREEN
First Claim
1. A method for operating a touchscreen device, the method comprising:
- identifying a status of the touchscreen device, by at least one processor, wherein the touchscreen device comprises at least a projected capacitive (PCAP) touchscreen mounted in front of a liquid crystal display (LCD) of the touchscreen device, an infrared (IR) touch sensor configured to generate an IR grid, a switch, and the at least one processor, and wherein the status comprises one of a default state lacking user touch input and a touch-state receiving active user touch input;
when the status comprises the touch-state, adjusting the switch to enable user input selections via the PCAP touchscreen; and
when the status comprises the default state, retaining a position of the switch, the position configured to disable user input selections via the PCAP touchscreen.
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Abstract
A method for operating a touchscreen device is provided. The method identifies a status of the touchscreen device, by at least one processor, wherein the touchscreen device comprises at least a projected capacitive (PCAP) touchscreen mounted in front of a liquid crystal display (LCD) of the touchscreen device, an infrared (IR) touch sensor configured to generate an IR grid, a switch, and the at least one processor, and wherein the status comprises one of a default state lacking user touch input and a touch-state receiving active user touch input. When the status comprises the touch-state, the method adjusts the switch to enable user input selections via the PCAP touchscreen. When the status comprises the default state, the method retains a position of the switch, the position configured to disable user input selections via the PCAP touchscreen.
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Citations
20 Claims
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1. A method for operating a touchscreen device, the method comprising:
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identifying a status of the touchscreen device, by at least one processor, wherein the touchscreen device comprises at least a projected capacitive (PCAP) touchscreen mounted in front of a liquid crystal display (LCD) of the touchscreen device, an infrared (IR) touch sensor configured to generate an IR grid, a switch, and the at least one processor, and wherein the status comprises one of a default state lacking user touch input and a touch-state receiving active user touch input; when the status comprises the touch-state, adjusting the switch to enable user input selections via the PCAP touchscreen; and when the status comprises the default state, retaining a position of the switch, the position configured to disable user input selections via the PCAP touchscreen. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touchscreen device, comprising:
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a projected capacitive touch (PCAP) touchscreen mounted in front of a liquid crystal display (LCD); a switch coupled to the PCAP touchscreen, the switch configured to shift between a first position connecting the PCAP touchscreen to ground and a second position connecting the PCAP touchscreen to a touch-controller; an infrared (IR) touch sensor configured to generate an IR grid; and the touch-controller comprising at least a system memory element and a processor, the touch-controller communicatively coupled to the PCAP touchscreen, the switch, and the IR sensor, and the touch-controller configured to; identify a status of the touchscreen device, wherein the status comprises one of a default state lacking user touch input and a touch-state receiving active user touch input; when the status comprises the touch-state, adjust the switch to enable user input selections via the PCAP touchscreen, based on adjusting the switch; and when the status comprises the default state, retain a position of the switch, the position configured to disable user input selections via the PCAP touchscreen. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A touchscreen system, comprising:
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a projected capacitive touch (PCAP) touchscreen mounted in front of a liquid crystal display (LCD); a switch coupled to the PCAP touchscreen, the switch configured to shift between a first position connecting the PCAP touchscreen to ground and a second position connecting the PCAP touchscreen to a touch-controller; an infrared (IR) touch sensor mounted in a bezel of the LCD and positioned in front of the LCD, wherein the IR touch sensor further comprises an infrared (IR) receiver, an infrared (IR) light emitting diode (LED), and infrared (IR) reflectors positioned on opposite sides of the LCD, wherein the IR LED and the IR receiver are aligned in the bezel to produce multiple close reflections between the IR reflectors to generate an IR grid capable of sensing an object approaching the PCAP touchscreen during touch operation; and the touch-controller comprising at least a system memory element and a processor, the touch-controller communicatively coupled to the PCAP touchscreen, the switch, and the IR sensor, and the touch-controller configured to; identify a status of the touchscreen device, wherein the status comprises one of a default state lacking user touch input and a touch-state receiving active user touch input; when the status comprises the touch-state, adjust the switch to enable user input selections via the PCAP touchscreen, based on adjusting the switch; and when the status comprises the default state, retain a position of the switch, the position configured to disable user input selections via the PCAP touchscreen.
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Specification