Patents by Inventor Huaiyi Xu
Huaiyi Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140347315Abstract: A touch control method and a device related thereto are provided. The capacitance touch device includes: a capacitive sensor; a capacitance detection circuit connected to the capacitive sensor and adapted to output a first signal in response of a change of the capacitance of the capacitive sensor in the case of a touch on the capacitance touch device; at least one pressure sensor adapted to sense a pressure produced by the touch on the capacitance touch device; a pressure detection circuit connected to the pressure sensor and adapted to output a second signal based on a sensing result of the pressure sensor; a data processing device connected to the capacitance detection circuit and the pressure detection circuit, and adapted to determine touch control information with pressure information based on the first signal and the second signal.Type: ApplicationFiled: November 18, 2013Publication date: November 27, 2014Applicant: FOCALTECH SYSTEMS, LTD.Inventors: Lianghua MO, Jingkai ZHANG, Huaiyi XU
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Patent number: 8803835Abstract: It is provided a touch screen device applied in an electronic information technology area. In the touch screen device supporting an active capacitance stylus, a demodulation unit demodulates a signal received by a reception unit by two orthogonal signals, and then an amplitude recovery unit recovers an amplitude of the signal received by the reception unit, the amplitude of the signal received by the reception unit can be recovered relatively exactly without the need that the demodulation signal must be synchronous with the signal received by the reception unit (or the signal transmitted from the active capacitance stylus), and there is no need to add additional hardware resources for synchronization in the touch screen device of the embodiment of the present invention compared with the existing detection method which needs to perform synchronization of the demodulation signal and the signal transmitted from the active capacitance stylus in the prior art.Type: GrantFiled: November 26, 2012Date of Patent: August 12, 2014Assignee: FocalTech Systems, Ltd.Inventors: Chen Li, Lianghua Mo, Jingkai Zhang, Xinxi Jiang, Huaiyi Xu
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Patent number: 8786564Abstract: 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.Type: GrantFiled: March 23, 2012Date of Patent: July 22, 2014Assignee: Focaltech Systems, Ltd.Inventors: Lianghua Mo, Huaiyi Xu, Jincheng Tian, Huadong Dai, Xinxi Jiang, Hua Li
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Publication number: 20140087658Abstract: A communication device applied in the field of electronic device technique is disclosed. In the communication device of embodiments of the invention, when a new communication function is added, the communication antenna may be arranged on the surface of the touch-display screen of the communication device or is embedded inside the touch-display screen; or an electrode included in the touch-display screen of the communication device is reused as the communication antenna and the communication function and the electrode function is coordinated by a control circuit; furthermore, a communication processing function circuit corresponding to the communication antenna is configured flexibly in conjunction with other processors of the communication device. Therefore the volume of the communication device is not increased when a new communication function is added to the communication device.Type: ApplicationFiled: December 27, 2012Publication date: March 27, 2014Applicant: FocalTech Systems, Ltd.Inventors: Weijing HOU, Lianghua MO, Wenjun ZHANG, Huaiyi XU
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Publication number: 20140035863Abstract: It is provided a touch screen device applied in an electronic information technology area. In the touch screen device supporting an active capacitance stylus, a demodulation unit demodulates a signal received by a reception unit by two orthogonal signals, and then an amplitude recovery unit recovers an amplitude of the signal received by the reception unit, the amplitude of the signal received by the reception unit can be recovered relatively exactly without the need that the demodulation signal must be synchronous with the signal received by the reception unit (or the signal transmitted from the active capacitance stylus), and there is no need to add additional hardware resources for synchronization in the touch screen device of the embodiment of the present invention compared with the existing detection method which needs to perform synchronization of the demodulation signal and the signal transmitted from the active capacitance stylus in the prior art.Type: ApplicationFiled: November 26, 2012Publication date: February 6, 2014Applicant: FocalTech Systems, Ltd.Inventors: Chen Li, Lianghua Mo, Jingkai Zhang, Xinxi Jiang, Huaiyi Xu
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Publication number: 20130169601Abstract: 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.Type: ApplicationFiled: March 23, 2012Publication date: July 4, 2013Applicant: FOCALTECH SYSTEMS, LTD.Inventors: Lianghua Mo, Huaiyi Xu, Jincheng Tian, Huadong Dai, Xinxi Jiang, Hua Li