Patents by Inventor Sung-Han WU

Sung-Han WU 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).

  • Publication number: 20210286462
    Abstract: A touch keyboard includes a key set, a capacitive touch sensor, and a pressure sensing circuit. The capacitive touch sensor is coupled to the key set and is configured to generate a sensing capacitance. The pressure sensing circuit is coupled to the capacitive touch sensor, configured to generate a pressure sensing value, and specifically includes a cancellation circuit. The cancellation circuit is configured to generate a cancellation signal, and enable a capacitor voltage converter in the pressure sensing circuit to output an analog voltage signal according to the sensing signal being added with the cancellation signal, and the content of the sensing signal is the sensing capacitance generated by the capacitive touch sensor.
    Type: Application
    Filed: October 20, 2020
    Publication date: September 16, 2021
    Inventors: SUNG-HAN WU, CHE-CHIA HSU
  • Publication number: 20210152387
    Abstract: There is provided a smart home control system including a host, at least one sensor, a plurality of controlled devices and an informing device. The host identifies entering and leaving of family members according to detection results of the at least one sensor, and controls on/off of the controlled devices or informs a specific family member by the informing device to execute agenda according to a member ID of a family member who is identified to enter or leave the house.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 20, 2021
    Inventors: Sung-Han WU, Yi-Hsien KO
  • Patent number: 10972099
    Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies. The capacitive touch system includes a touch panel or a touch keyboard.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 6, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Sung-Han Wu, Che-Chia Hsu, Chia-Yi Lee
  • Patent number: 10962426
    Abstract: The present disclosure illustrates a calibration circuit for a pressure sensing device. The calibration circuit, via at least one passive component installed in the pressure sensing device, obtains a calibration gain factor of at least one converter also installed in the pressure sensing device, and when the pressure sensing device is in a regular operating mode, the calibration gain factor can be used to calibrate the output of the converter, so that a sensing signal inputted into the pressure sensing device can be correctly converted to a relevant pressure value.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 30, 2021
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Publication number: 20210014075
    Abstract: There is provided a smart home control system including a host, at least one sensor, a plurality of controlled devices and an informing device. The host identifies entering and leaving of family members according to detection results of the at least one sensor, and controls on/off of the controlled devices or informs a specific family member by the informing device to execute agenda according to a member ID of a family member who is identified to enter or leave the house. When identifying that one agendum is unable or forgotten to be executed by the specific family member, the host further rearranges the agendum.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Inventors: Sung-Han WU, Yi-Hsien KO
  • Publication number: 20200409506
    Abstract: There is provided a capacitive touch device including a touch panel and a control chip. The touch panel includes detection electrodes configured to form self-capacitance and mutual-capacitance. The control chip includes an emulation circuit and a subtraction circuit. The emulation circuit is configured to output a reference signal. The subtraction circuit is coupled to the emulation circuit and the detection electrode, subtracts the reference signal outputted by the emulation circuit from a detected signal outputted by the detection electrodes to output a differential detected signal, and identifies a touch event according to the differential detected signal to reduce the power consumption for touch detection.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Inventor: SUNG-HAN WU
  • Publication number: 20200371620
    Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventor: SUNG-HAN WU
  • Publication number: 20200372992
    Abstract: There is provided a smart control system including a host, at least one sensor and an informing device. The host identifies the activity of a specific member according to the detection result of the at least one sensor, and informs the specific member to take medicine on time or avoid eating specific ingredients using the informing device.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: SUNG-HAN WU, YI-HSIEN KO
  • Publication number: 20200371623
    Abstract: There is provided a capacitive touch device including a touch panel and a control chip. The touch panel includes a detection electrode configured to form a self-capacitor. The control chip includes an emulation circuit and a subtraction circuit. The emulation circuit is configured to output a reference signal. The subtraction circuit is coupled to the emulation circuit and the detection electrode, subtracts the reference signal outputted by the emulation circuit from a detected signal outputted by the detection electrode to output a differential detected signal, and identifies a touch event according to an amplified differential detected signal so as to improve the touch sensitivity.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventor: SUNG-HAN WU
  • Patent number: 10831304
    Abstract: There is provided a capacitive touch device including a touch panel and a control chip. The touch panel includes detection electrodes configured to form self-capacitance and mutual-capacitance. The control chip includes an emulation circuit and a subtraction circuit. The emulation circuit is configured to output a reference signal. The subtraction circuit is coupled to the emulation circuit and the detection electrode, subtracts the reference signal outputted by the emulation circuit from a detected signal outputted by the detection electrodes to output a differential detected signal, and identifies a touch event according to the differential detected signal to reduce the power consumption for touch detection.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 10, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Publication number: 20200348640
    Abstract: There is provided a smart home control system including a host, at least one sensor, a plurality of controlled devices and an informing device. The host identifies entering and leaving of family members according to detection results of the at least one sensor, and controls on/off of the controlled devices or informs a specific family member by the informing device to execute agenda according to a member ID of a family member who is identified to enter or leave the house.
    Type: Application
    Filed: May 21, 2020
    Publication date: November 5, 2020
    Inventors: SUNG-HAN WU, YI-HSIEN KO
  • Patent number: 10775939
    Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 15, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Patent number: 10775945
    Abstract: There is provided a capacitive touch device including a touch panel and a control chip. The touch panel includes a detection electrode configured to form a self-capacitor. The control chip includes an emulation circuit and a subtraction circuit. The emulation circuit is configured to output a reference signal. The subtraction circuit is coupled to the emulation circuit and the detection electrode, subtracts the reference signal outputted by the emulation circuit from a detected signal outputted by the detection electrode to output a differential detected signal, and identifies a touch event according to an amplified differential detected signal so as to improve the touch sensitivity.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: September 15, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Publication number: 20200200616
    Abstract: The present disclosure illustrates a calibration circuit for a pressure sensing device. The calibration circuit, via at least one passive component installed in the pressure sensing device, obtains a calibration gain factor of at least one converter also installed in the pressure sensing device, and when the pressure sensing device is in a regular operating mode, the calibration gain factor can be used to calibrate the output of the converter, so that a sensing signal inputted into the pressure sensing device can be correctly converted to a relevant pressure value.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Inventor: SUNG-HAN WU
  • Publication number: 20200153432
    Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies. The capacitive touch system includes a touch panel or a touch keyboard.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 14, 2020
    Inventors: SUNG-HAN WU, CHE-CHIA HSU, Chia-Yi LEE
  • Patent number: 10634567
    Abstract: The present disclosure illustrates a calibration method and circuit for a pressure sensing device. The calibration method, via at least one passive component (e.g., the default capacitor) installed in the pressure sensing device, obtains a calibration gain factor of at least one converter also installed in the pressure sensing device, and when the pressure sensing device is in a regular operating mode, the calibration gain factor can be used to calibrate the output of the converter, so that a sensing signal inputted into the pressure sensing device can be correctly converted to a relevant pressure value.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 28, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Patent number: 10613155
    Abstract: A short circuit testing method for a capacitive sensing device including a plurality of sense lines and a plurality of drive lines includes: under a short circuit testing mode, coupling at least one first line in the sense lines and drive lines to a reference level; using a sensing circuit corresponding to a specific sense line to read out a testing resultant signal; and, comparing the testing resultant signal with a reference signal to determine whether a short circuit exists.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 7, 2020
    Assignee: PixArt Imaging Inc.
    Inventors: Sung-Han Wu, Wooi Kip Lim, Kei Tee Tiew, Keen-Hun Leong
  • Patent number: 10603566
    Abstract: The disclosure is related to a method and a system for posture correction adapted to one sporting equipment. In the method, a force distribution history responsive to force or pressure data detected by one or more pressure sensors mounted on a surface of the sporting equipment over a period of time is firstly obtained. The pressure value is recorded in the force distribution history once it is detected that a pressure value exceeds a threshold, and the force distribution history is compared with a selected force pattern model so as to obtain a deviation distribution model. The deviation distribution model renders a correction data for the posture correction.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 31, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Patent number: 10534476
    Abstract: A compensation method for an induced amount in a touch sensor and a touch panel thereof are provided. The compensation method uses a fake finger circuit to simulate the situations when a user touches the sensing nodes of the touch sensor with a finger, and obtains the gain coefficient of each of the sensing nodes, which are used to compensate for the induced capacitance generated by the sensing nodes as a result of being touched by an external object. In this way, the extra effects caused by the difference in basic capacitance can be eliminated by the gain coefficient.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: January 14, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Sung-Han Wu, Ming-Hung Tsai, Che-Chia Hsu
  • Patent number: 10451662
    Abstract: Disclosed is a capacitive pressure sensing circuit and a capacitance-to-voltage converter thereof. The pressure sensing circuit comprises a converter, a cancellation circuit and a signal processor. The cancellation circuit is connected between the converter and at least one capacitive pressure sensor. The cancellation circuit attenuates the inductive capacitance generated by the capacitive pressure sensor to prevent an overflow happening when the inductive capacitance received by the converter is too large, such that the converter can effectively output a voltage signal corresponding to the attenuated inductive capacitance.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 22, 2019
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu