Method, apparatus, and system for detecting transmitter approximating or touching touch sensitive device
First Claim
1. A method for detecting a transmitter approximating or touching a touch sensitive device, the transmitter transmitting an electrical signal mixed by signals having a plurality of frequencies, the touch sensitive device including a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points intersected by those first and second electrodes, the method comprising the steps of:
- calculating the strength of a signal corresponding to each of the plurality of frequencies in the electrical signal received by each of the first electrodes and second electrodes;
summing all of the calculated strengths of signals corresponding to the plurality of frequencies; and
calculating a relative position between the transmitter and the touch sensitive device according to the calculated total signal strengths.
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Accused Products
Abstract
The present invention provides a method for detecting a transmitter approximating or touching a touch sensitive device. The transmitter transmits an electrical signal mixed by signals having a plurality of frequencies. The touch sensitive device includes a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points intersected by those first and second electrodes. The method includes: calculating the signal strength of the electrical signal received by each of the first electrodes and second electrodes; and calculating a relative position between the transmitter and the touch sensitive device according to the calculated signal strengths.
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Citations
31 Claims
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1. A method for detecting a transmitter approximating or touching a touch sensitive device, the transmitter transmitting an electrical signal mixed by signals having a plurality of frequencies, the touch sensitive device including a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points intersected by those first and second electrodes, the method comprising the steps of:
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calculating the strength of a signal corresponding to each of the plurality of frequencies in the electrical signal received by each of the first electrodes and second electrodes; summing all of the calculated strengths of signals corresponding to the plurality of frequencies; and calculating a relative position between the transmitter and the touch sensitive device according to the calculated total signal strengths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A touch processing device for detecting a transmitter approximating or touching a touch sensitive device, the transmitter transmitting an electrical signal mixed by signals having a plurality of frequencies, the touch sensitive device including a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points intersected by those first and second electrodes, and the touch processing device being used for:
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calculating the strength of a signal corresponding to each of the plurality of frequencies in the electrical signal received by each of the first electrodes and second electrodes; summing all of the calculated strengths of signals corresponding to the plurality of frequencies; and calculating a relative position between the transmitter and the touch sensitive device according to the calculated total signal strengths. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A touch processing system for detecting a transmitter approximating or touching a touch sensitive device, the transmitter transmitting an electrical signal mixed by signals having a plurality of frequencies, the touch processing system comprising:
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the touch sensitive device including a plurality of first electrodes, a plurality of second electrodes and a plurality of sensing points intersected by those first and second electrodes; and a touch processing device for calculating the strength of a signal corresponding to each of the plurality of frequencies in the electrical signal received by each of the first electrodes and second electrodes, summing all of the calculated strengths of signals corresponding to the plurality of frequencies, and calculating a relative position between the transmitter and the touch sensitive device according to the calculated total signal strengths.
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Specification