TOUCH STYLUS, TOUCH DETECTION METHOD AND TOUCH DETECTION SYSTEM
First Claim
1. A touch stylus, comprising a stylus tip and a stylus body, wherein,the stylus tip is connected to the stylus body, the stylus body is provided with a cavity in which a driving circuit board and a battery are arranged, the driving circuit board is electrically connected to the stylus tip, the battery is adapted to supply electrical energy to the driving circuit board, and the driving circuit board is adapted to generate a square wave signal and send the square wave signal to a touch detection system through the stylus tip, so that the touch detection system determines whether a touch event occurs according to the square wave signal.
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Accused Products
Abstract
The embodiments of the present invention disclose a touch stylus, a touch detection method and a touch detection system, which are suitable to be used for writing on a capacitive touch screen and can increase the success rate of touch. A method according to an embodiment of the present invention includes: receiving, by a sensing electrode, a square wave signal sent from a stylus tip of a touch stylus; performing a detection process on the square wave signal, by a sensing detection unit, the sensing detection unit having a clock synchronized with a clock of the touch stylus; determining, by a signal processing unit, whether a touch event occurs according to the square wave signal processed with the detection process; and calculating position coordinates of the touch event and reporting the position coordinates to a system control unit, by the signal processing unit, if a touch event occurs.
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Citations
13 Claims
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1. A touch stylus, comprising a stylus tip and a stylus body, wherein,
the stylus tip is connected to the stylus body, the stylus body is provided with a cavity in which a driving circuit board and a battery are arranged, the driving circuit board is electrically connected to the stylus tip, the battery is adapted to supply electrical energy to the driving circuit board, and the driving circuit board is adapted to generate a square wave signal and send the square wave signal to a touch detection system through the stylus tip, so that the touch detection system determines whether a touch event occurs according to the square wave signal.
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6. A touch detection method, comprising:
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receiving, by a sensing electrode, a square wave signal sent from a stylus tip of a touch stylus; performing a detection process on the square wave signal, by a sensing detection unit, the sensing detection unit having a clock synchronized with a clock of the touch stylus; determining, by a signal processing unit, whether a touch event occurs according to the square wave signal processed with the detection process; and calculating position coordinates of the touch event and reporting the position coordinates to a system control unit, by the signal processing unit, if a touch event occurs. - View Dependent Claims (7, 8)
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9. A touch detection system, comprising a sensing electrode, a sensing detection unit, and a signal processing unit, wherein,
the sensing electrode is adapted to receive a square wave signal sent from a stylus tip of a touch stylus; -
the sensing detection unit is adapted to perform a detection process on the square wave signal and send a result to the signal processing unit, the sensing detection unit having a clock synchronized with a clock of the touch stylus; the signal processing unit is adapted to determine whether a touch event occurs according to the square wave signal processed with the detection process; and the signal processing unit is further adapted to calculate position coordinates of the touch event and report the position coordinates to a system control unit if a touch event occurs. - View Dependent Claims (10, 11, 12, 13)
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Specification