CAPACITIVE SENSOR
First Claim
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1. An apparatus comprising:
- a first sensing element;
a sensing channel operable to generate a first signal indicative of a first capacitance between the sensing element and a system ground; and
a processor responsive to a change in the first capacitance between the first sensing element and ground, the processor configured to adjust a value of a parameter based on a first duration of the change in the first capacitance.
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Abstract
Method and apparatus are provided for a capacitive sensor. In an example, a capacitive sensor can include a first sensing element, a sensing channel operable to generate a first signal indicative of first capacitance between the sensing element and a system ground, and a processor responsive to a change in the first capacitance between the first sensing element and ground. The processor can be configured to adjust a parameter value based on a first duration of the change in the first capacitance.
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Citations
19 Claims
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1. An apparatus comprising:
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a first sensing element; a sensing channel operable to generate a first signal indicative of a first capacitance between the sensing element and a system ground; and a processor responsive to a change in the first capacitance between the first sensing element and ground, the processor configured to adjust a value of a parameter based on a first duration of the change in the first capacitance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system comprising:
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color illumination device; a controller configured to control the color illumination device, the controller including a first sensing element; a second sensing element; a sensing channel, the sensing channel operable to generate a first signal indicative of a first capacitance between the sensing element and a system ground, and operable to generate a second signal indicative of a second capacitance between the second sensing element and the system ground; a processor, wherein the processor is responsive to a change in the first capacitance between the first sensing element and ground; wherein the the processor is configured to adjust a value of a parameter based on a first duration of the change in the first capacitance, wherein the processor is responsive to a change in the second capacitance; and wherein the processor is configured to adjust the value of the parameter based on a second duration of the change in the second capacitance. - View Dependent Claims (15, 16)
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17. A method comprising:
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detecting a first touch of a first sensing element using a change in capacitance of the first sensing element; monitoring a first duration of the detected first touch; changing a value of a parameter if the first duration exceeds a first predetermined interval; and controlling an aspect of color of a color illumination device based on the value of the parameter. - View Dependent Claims (18, 19)
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Specification