Touch screen driver and methods for use therewith
First Claim
Patent Images
1. A touch screen driver comprising:
- a conditioner module, for conditioning a first input/output port of a touch screen, the conditioner module including a precharge module for charging the first input/output port to a precharge voltage in response to a precharge signal, and a pull-up module for maintaining the precharge voltage for detecting a touch event;
an output module, operably coupled to the first input/output port for detecting the touch event based on an output voltage and for generating a touch detect signal in response to the detection of the touch event; and
a controller module, operably coupled to the conditioner module and the output module, for generating the precharge signal and for generating a control signal in response to the touch detect signal.
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Abstract
A touch screen driver includes a conditioner module for conditioning a first input/output port of a touch screen. The conditioner module includes a precharge module for charging the first input/output port to a precharge voltage in response to a precharge signal, and a pull-up module for maintaining the precharge voltage for detecting a touch event.
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Citations
43 Claims
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1. A touch screen driver comprising:
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a conditioner module, for conditioning a first input/output port of a touch screen, the conditioner module including a precharge module for charging the first input/output port to a precharge voltage in response to a precharge signal, and a pull-up module for maintaining the precharge voltage for detecting a touch event;
an output module, operably coupled to the first input/output port for detecting the touch event based on an output voltage and for generating a touch detect signal in response to the detection of the touch event; and
a controller module, operably coupled to the conditioner module and the output module, for generating the precharge signal and for generating a control signal in response to the touch detect signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A touch screen driver comprising:
a conditioner module, for conditioning a first input/output port of a touch screen, the conditioner module including a precharge module for charging the first input/output port to a precharge voltage in response to a precharge signal, and a pull-up module for maintaining the precharge voltage for detecting a touch event. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method comprising:
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generating a precharge signal;
charging a input/output port of a touch screen to a precharge voltage in response to the precharge signal;
maintaining the precharge voltage for detecting a touch event;
detecting the touch event in response to an output voltage of the input/output port; and
generating a touch detect signal in response to an output voltage. - View Dependent Claims (30, 31, 32, 33)
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34. A method comprising:
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regulating an input voltage below a supply voltage; and
selectively providing an input signal having the input voltage to an input/output port of a touch screen in response to the touch event. - View Dependent Claims (35)
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36. A touch screen driver comprising:
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an input module, for selectively providing an input signal having an input voltage to a first input/output port of a touch screen in response to a control signal, the input module including a voltage regulator for regulating the input voltage below a supply voltage;
an output module, operably coupled to the first input/output port, for detecting the touch event based on an output voltage and for generating a touch detect signal in response to the detection of the touch event; and
a controller module, operably coupled to the input module and the output module, for generating a control signal in response to the touch detect signal. - View Dependent Claims (37, 38, 39)
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40. A touch screen driver comprising:
an input module, for selectively providing an input voltage to a first input/output port of a touch screen, the input module including a regulator for regulating the input voltage below a supply voltage. - View Dependent Claims (41, 42, 43)
Specification