Handling of electromagnetic interference in an electronic apparatus
First Claim
1. A method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of:
- disconnecting the first electrodes from a driving voltage source;
acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during no driving voltage supplied to the first electrodes; and
calculating respectively an evaluation of noise corresponding with each of designed measurement modes according to the acquired voltage values of noise, wherein each designed measurement mode corresponds to a combination of a plurality of forward operations and a plurality of reverse operations, and the number of the plurality of measurement cycles is M*N*K where N represents the number of the plurality of designed measurement modes, M represents the number of cycles to be performed for each mode, and K presents the number of measurement cycles taken for average.
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Accused Products
Abstract
The present invention provides a control module and a method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of: disconnecting the first electrodes from a driving voltage source; and acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during the first electrodes without a driving voltage.
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Citations
18 Claims
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1. A method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of:
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disconnecting the first electrodes from a driving voltage source; acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during no driving voltage supplied to the first electrodes; and calculating respectively an evaluation of noise corresponding with each of designed measurement modes according to the acquired voltage values of noise, wherein each designed measurement mode corresponds to a combination of a plurality of forward operations and a plurality of reverse operations, and the number of the plurality of measurement cycles is M*N*K where N represents the number of the plurality of designed measurement modes, M represents the number of cycles to be performed for each mode, and K presents the number of measurement cycles taken for average. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of:
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disconnecting the first electrodes from a driving voltage source; acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during no driving voltage supplied to the first electrodes; and calculating respectively an evaluation of noise corresponding with each of designed measurement modes according to the acquired voltage values of noise, wherein each designed measurement mode corresponds to a combination of a plurality of forward operations and a plurality of reverse operations, and the number of the plurality of measurement cycles is M*K where M represents the number of cycles to be performed for each designed measurement mode and K represents the number of measurement cycles taken for average, and the plurality of designed measurement modes are correlated to the same sinusoidal or cosinusoidal function. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of:
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disconnecting the first electrodes from a driving voltage source; acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during no driving voltage supplied to the first electrodes; and calculating respectively an evaluation of noise corresponding with each of designed measurement modes according to the acquired voltage values of noise, wherein each designed measurement mode corresponds to a combination of a plurality of forward operations and a plurality of reverse operations, and the number of the plurality of measurement cycles is M+K−
1 where M represents the number of cycles to be performed for each designed measurement mode and K represents the number of measurement cycles taken for average. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification