Method for Transmitting and Detecting Touch Sensing Signals and Touch Device Using the Same
First Claim
1. A method for transmitting and detecting touch sensing signals in a touch device having a set of parallel conducting lines, said method comprising:
- a) providing a work signal and a touch sensing signal to a selected portion of the conducting lines that serve as touch sensing lines and that cooperate to define a touch sensing area,wherein, for each of the touch sensing lines, the work signal is provided during a first time interval and the touch sensing signal is provided during a second time interval; and
b) detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event.
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Abstract
A method for transmitting and detecting touch sensing signals in a touch device having a set of parallel conducting lines includes: providing a work signal and a touch sensing signal to a selected portion of the conducting lines that serve as touch sensing lines and that cooperate to define a touch sensing area; and detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event. For each of the touch sensing lines, the work signal is provided during a first time interval and the touch sensing signal is provided during a second time interval.
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Citations
26 Claims
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1. A method for transmitting and detecting touch sensing signals in a touch device having a set of parallel conducting lines, said method comprising:
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a) providing a work signal and a touch sensing signal to a selected portion of the conducting lines that serve as touch sensing lines and that cooperate to define a touch sensing area, wherein, for each of the touch sensing lines, the work signal is provided during a first time interval and the touch sensing signal is provided during a second time interval; and b) detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for transmitting and detecting touch sensing signals in a touch device having a set of conducting lines and a set of touch sensing lines, said method comprising:
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i) providing a work signal to the set of conducting lines; ii) providing a reference voltage signal to one of the set of conducting lines and the set of touch sensing lines; iii) providing a touch sensing signal to the set of touch sensing lines; and iv) detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for transmitting and detecting touch sensing signals in a capacitive touch sensing circuit having a set of touch sensing lines, said method comprising:
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coupling and uncoupling each of the touch sensing lines to one of a ground and a capacitor; providing a touch sensing signal to the touch sensing lines; and detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event.
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Specification