Patents by Inventor Chaoliang Du

Chaoliang Du 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).

  • Patent number: 11959797
    Abstract: An online detection device and method for a piezoelectric device. The device comprises an elastic wave sensor, a sell-detection circuit, a working circuit, a switch circuit and a control chip. The switch circuit is connected with the elastic wave sensor, the self-detection circuit and the working circuit. The sell-detection circuit is connected with the control chip and is used for, When being connected to the elastic wave sensor, generating, a self-detection signal according to the capacitance of the elastic wave sensor. The working circuit is connected with the control chip and is used for, when being connected to the elastic wave sensor, forming a touch detection circuit and detecting an external touch by means of the elastic wave sensor so as to obtain a detection signal.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: April 16, 2024
    Assignee: Beijing Taifang Technology Co., Ltd.
    Inventors: Chaoliang Du, Hongfeng Guo
  • Publication number: 20230359297
    Abstract: Disclosed are a touch sensing method and apparatus, applied to a touch sensing apparatus including at least one elastic wave sensor, the method includes: acquiring an elastic wave signal detected by at least one elastic wave sensor mounted on the touch sensing apparatus; determining a feature of the elastic wave signal, including: a synchronous feature, an asynchronous feature, or a preset tap waveform feature; and performing touch sensing according to the feature of the elastic wave signal.
    Type: Application
    Filed: January 17, 2023
    Publication date: November 9, 2023
    Inventors: Chaoliang DU, Jiaojiao TAO, Xiong LEI, Wang JIA
  • Patent number: 11537229
    Abstract: A touch pad pressure detection method and apparatus, a storage medium and a computer device, wherein the method comprises: by means of an elastic wave sensor arranged below a touch pad, detecting a pressing operation on a touch pad to obtain a voltage signal; and determining pressure on the basis of the voltage signal.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: December 27, 2022
    Assignee: Beijing Taifang Technology Co., Ltd.
    Inventors: Chaoliang Du, Hongfeng Guo
  • Publication number: 20220283023
    Abstract: An online detection device and method for a piezoelectric device. The device comprises an elastic wave sensor, a sell-detection circuit, a working circuit, a switch circuit and a control chip. The switch circuit is connected with the elastic wave sensor, the self-detection circuit and the working circuit. The sell-detection circuit is connected with the control chip and is used for, When being connected to the elastic wave sensor, generating, a self-detection signal according to the capacitance of the elastic wave sensor. The working circuit is connected with the control chip and is used for, when being connected to the elastic wave sensor, forming a touch detection circuit and detecting an external touch by means of the elastic wave sensor so as to obtain a detection signal.
    Type: Application
    Filed: August 3, 2020
    Publication date: September 8, 2022
    Inventors: Chaoliang DU, Hongfeng GUO
  • Patent number: 11301077
    Abstract: Disclosed is a piezoelectric sensing apparatus, comprising: a plurality of piezoelectric regions, each piezoelectric region including an anode surface and a cathode surface, wherein the plurality of piezoelectric regions are successively connected from the first piezoelectric region to the last piezoelectric region such that between adjacent piezoelectric regions, surfaces of a same polarity are connected, i.e., one anode surface is connected to another anode surface, while one cathode surface is connected to another cathode surface. The piezoelectric sensing apparatus as provided may effectively boost a high-frequency signal while weaken a low-frequency signal, such that an output waveform signal facilitates improving the positioning accuracy.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: April 12, 2022
    Assignee: Beijing Taifang Technology Co., Ltd
    Inventors: Chaoliang Du, Hongfeng Guo, Qingyu Zhao
  • Publication number: 20220100308
    Abstract: A touch pad pressure detection method and apparatus, a storage medium and a computer device, wherein the method comprises: by means of an elastic wave sensor arranged below a touch pad, detecting a pressing operation on a touch pad to obtain a voltage signal; and determining pressure on the basis of the voltage signal.
    Type: Application
    Filed: January 17, 2020
    Publication date: March 31, 2022
    Inventors: Chaoliang DU, Hongfeng GUO
  • Publication number: 20190267995
    Abstract: Disclosed is a piezoelectric sensing apparatus, comprising: a plurality of piezoelectric regions, each piezoelectric region including an anode surface and a cathode surface, wherein the plurality of piezoelectric regions are successively connected from the first piezoelectric region to the last piezoelectric region such that between adjacent piezoelectric regions, surfaces of a same polarity are connected, i.e., one anode surface is connected to another anode surface, while one cathode surface is connected to another cathode surface. The piezoelectric sensing apparatus as provided may effectively boost a high-frequency signal while weaken a low-frequency signal, such that an output waveform signal facilitates improving the positioning accuracy.
    Type: Application
    Filed: May 16, 2019
    Publication date: August 29, 2019
    Inventors: Chaoliang Du, Hongfeng Guo, Qingyu Zhao
  • Patent number: 9733747
    Abstract: The present invention is a method for measuring touching position, touching energy and display device thereof. While touching position is measured, at least two sensors are installed in dispersing form under the sensing panel of touch control equipment. The sensing panel is divided into a plurality of grids. The unit energy distribution vector of the touching signal is compared with the unit energy distribution vector of the benchmark signal of each grid, therefore touching position is obtained. While touching energy is measured, at least one sensor is installed under the sensing panel. The sensing panel is divided into a plurality of grids. Touching position would be obtained by the above method for measuring touching position or other methods. The touching energy could be calculated by comparing the detected touching signal energy with energy of benchmark signal at touching position in corresponding grid.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 15, 2017
    Inventor: Chaoliang Du
  • Publication number: 20150317027
    Abstract: The present invention is a method for measuring touching position, touching energy and display device thereof. While touching position is measured, at least two sensors are installed in dispersing form under the sensing panel of touch control equipment. The sensing panel is divided into a plurality of grids. The unit energy distribution vector of the touching signal is compared with the unit energy distribution vector of the benchmark signal of each grid, therefore touching position is obtained. While touching energy is measured, at least one sensor is installed under the sensing panel. The sensing panel is divided into a plurality of grids. Touching position would be obtained by the above method for measuring touching position or other methods. The touching energy could be calculated by comparing the detected touching signal energy with energy of benchmark signal at touching position in corresponding grid.
    Type: Application
    Filed: December 10, 2013
    Publication date: November 5, 2015
    Inventor: Chaoliang Du