NOISE DETECTION DEVICE, SYSTEM AND METHOD
First Claim
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1. A noise detection device, comprising:
- a drive circuit driving a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period;
a sense circuit sensing a plurality of sense signals from at least one sense line during the predetermined time period; and
a controller deriving a magnitude of a noise signal from the at least one sense line according to the sense signals.
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Abstract
A noise detection device, system, and a method of detecting noise signals are disclosed. The noise detection device includes a drive circuit, a sense circuit and a controller. The drive circuit drives a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period. The sense circuit senses a plurality of sense signals from at least one sense line during the predetermined time period. The controller derives a magnitude of a noise signal from the at least one sense line according to the sense signals.
7 Citations
21 Claims
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1. A noise detection device, comprising:
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a drive circuit driving a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period; a sense circuit sensing a plurality of sense signals from at least one sense line during the predetermined time period; and a controller deriving a magnitude of a noise signal from the at least one sense line according to the sense signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A noise detection system, comprising:
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a touch panel comprising a a plurality of drive lines and at least one sense line; a noise detection device, comprising; a drive circuit driving a plurality of drive lines with a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period; a sense circuit sensing a plurality of sense signals from the at least one sense line during the predetermined time period; and a controller deriving a magnitude of a noise signal from the at least one sense line according to the sense signals. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of detecting noise signals, the method comprising:
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driving a plurality of drive lines with drive signals having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period; sensing a plurality of sense signals from at least one sense line during the predetermined time period; and deriving a magnitude of a noise signal from the at least one sense line according to the sense signals. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification