Patents by Inventor Guanhua Cao

Guanhua Cao 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).

  • Short-term noise suppression
    Patent number: 11550434
    Abstract: A processing system is configured to drive a transmitter electrode with a repetitive multi-burst pattern. The repetitive multi-burst pattern includes a first multitude of bursts of a sensing waveform and a second multitude of bursts of the sensing waveform. The second multitude of bursts is a repetition of the first multitude of bursts. The processing system is further configured to receive, from a receiver electrode, a resulting signal in response to the repetitive multi-burst pattern, and identify, in the resulting signal, a segment least affected by a noise, and that temporally coincides with a burst in the first multitude of bursts or a burst in the second multitude of bursts matching the burst in the first plurality of bursts. The processing system is also configured to decode the resulting signal using the segment.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: January 10, 2023
    Assignee: Synaptics Incorporated
    Inventors: Cungang Ding, Longming Cheng, Guanhua Cao
  • SHORT-TERM NOISE SUPPRESSION
    Publication number: 20220121298
    Abstract: A processing system is configured to drive a transmitter electrode with a repetitive multi-burst pattern. The repetitive multi-burst pattern includes a first multitude of bursts of a sensing waveform and a second multitude of bursts of the sensing waveform. The second multitude of bursts is a repetition of the first multitude of bursts. The processing system is further configured to receive, from a receiver electrode, a resulting signal in response to the repetitive multi-burst pattern, and identify, in the resulting signal, a segment least affected by a noise, and that temporally coincides with a burst in the first multitude of bursts or a burst in the second multitude of bursts matching the burst in the first plurality of bursts. The processing system is also configured to decode the resulting signal using the segment.
    Type: Application
    Filed: October 19, 2020
    Publication date: April 21, 2022
    Applicant: Synaptics Incorporated
    Inventors: Cungang Ding, Longming Cheng, Guanhua Cao
  • Object classification under low-power scan
    Patent number: 10241614
    Abstract: A method may include performing a first low-power scan to detect an input object in a sensing region of an input device. The method may further include determining, using the first low-power scan, whether the input object is an object of interest. The method may further include performing a high-power scan of the sensing region when the input object is an object of interest. The method may further include performing a second low-power scan of the sensing region when the input object is an object of no interest.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: March 26, 2019
    Assignee: Synaptics Incorporated
    Inventors: Tetsuo Tanemura, Guanhua Cao
  • OBJECT CLASSIFICATION UNDER LOW-POWER SCAN
    Publication number: 20180292939
    Abstract: A method may include performing a first low-power scan to detect an input object in a sensing region of an input device. The method may further include determining, using the first low-power scan, whether the input object is an object of interest. The method may further include performing a high-power scan of the sensing region when the input object is an object of interest. The method may further include performing a second low-power scan of the sensing region when the input object is an object of no interest.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 11, 2018
    Inventors: Tetsuo Tanemura, Guanhua Cao