Patents by Inventor Chi-Hao Tang

Chi-Hao Tang 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: 11513636
    Abstract: The present application provides a method for determining mistaken approaching/touching event, comprising: gathering one or more touch sensitive signal value corresponding to a line piece; calculating a sum of differences of each signal value and a baseline value; and if the sum is less than or equals to zero, determining the line piece is corresponding to a mistaken approaching/touching event.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: November 29, 2022
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chi-Hao Tang, Jen-Yi Sun
  • Patent number: 11449177
    Abstract: The present application provides a method for determining mistaken approaching/touching event, comprising: gathering one or more touch sensitive signal value corresponding to a line piece; calculating a sum of differences of each signal value and a baseline value; and if the sum is less than or equals to zero, determining the line piece is corresponding to a mistaken approaching/touching event.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: September 20, 2022
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chi-Hao Tang, Jen-Yi Sun
  • Publication number: 20220066617
    Abstract: The present application provides a method for determining mistaken approaching/touching event, comprising: gathering one or more touch sensitive signal value corresponding to a line piece; calculating a sum of differences of each signal value and a baseline value; and if the sum is less than or equals to zero, determining the line piece is corresponding to a mistaken approaching/touching event.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Inventors: CHI-HAO TANG, JEN-YI SUN
  • Publication number: 20220066616
    Abstract: The present application provides a method for determining mistaken approaching/touching event, comprising: gathering one or more touch sensitive signal value corresponding to a line piece; calculating a sum of differences of each signal value and a baseline value; and if the sum is less than or equals to zero, determining the line piece is corresponding to a mistaken approaching/touching event.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Inventors: CHI-HAO TANG, JEN-YI SUN
  • Patent number: 11199927
    Abstract: The present application provides a method for determining whether a line piece is corresponding to a stylus tip. The method comprises: gathering multiple touch sensitive signal values corresponding to the line piece; calculating a first slope at edge of the line piece; determining whether the first slope is larger than a slope threshold; and determining that the line piece is corresponding to the stylus tip if the first slope is larger than the slope threshold.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: December 14, 2021
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Shang-Tai Yeh, Chi-Hao Tang, Jen-Yi Sun
  • Patent number: 10866676
    Abstract: A touch sensitive processing apparatus comprises a touch sensitive interface for connecting electrodes of a touch screen to detect a proximity/touch event; a host interface for reporting the proximity/touch event; a halt interface; and an embedded processor configured for commanding the touch sensitive interface to cease detecting proximity/touch events and the host interface to cease reporting proximity/touch events if the halt interface is set in a first logic state.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: December 15, 2020
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Cheng-Han Lee, Chi-Hao Tang
  • Publication number: 20190391700
    Abstract: The present application provides a method for determining whether a line piece is corresponding to a stylus tip. The method comprises: gathering multiple touch sensitive signal values corresponding to the line piece; calculating a first slope at edge of the line piece; determining whether the first slope is larger than a slope threshold; and determining that the line piece is corresponding to the stylus tip if the first slope is larger than the slope threshold.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Inventors: CHIN-FU CHANG, CHI-HAO TANG, JEN-YI SUN
  • Patent number: 10310693
    Abstract: A controller for position detection is disclosed. At least one first 1-D position corresponding to at least one external object is determined based on signals of a plurality of first sensors by self-capacitance detection. Then, at least one second 1-D position corresponding to the at least one first 1-D position is determined based on signals of a plurality of second sensors by mutual-capacitance detection, wherein each second 1-D position is determined based on a differential sensing information whose each value is based on signals of two second sensors by mutual-capacitance detection.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: June 4, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Patent number: 10101372
    Abstract: The method and device for analyzing position are disclosed. By analyzing sensing information with at least one zero-crossing, each position can be analyzed. The number of analyzed positions may be different from the number of zero-crossings. When the number of analyzed positions is different from the number of zero-crossing, the number of analyzed positions is more than one.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: October 16, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Patent number: 10061459
    Abstract: The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: August 28, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20180239464
    Abstract: A controller for position detection is disclosed. At least one first 1-D position corresponding to at least one external object is determined based on signals of a plurality of first sensors by self-capacitance detection. Then, at least one second 1-D position corresponding to the at least one first 1-D position is determined based on signals of a plurality of second sensors by mutual-capacitance detection, wherein each second 1-D position is determined based on a differential sensing information whose each value is based on signals of two second sensors by mutual-capacitance detection.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Patent number: 9977556
    Abstract: A controller for position detection is disclosed. At least one first 1-D position corresponding to at least one external object is determined based on signals of a plurality of first sensors by self-capacitance detection. Each first 1-D position is determined based on a differential sensing information whose each value is based on signals of two first sensors by self-capacitance detection. Then, at least one second 1-D position corresponding to the at least one first 1-D position is determined based on signals of a plurality of second sensors by mutual-capacitance detection.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: May 22, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20180081488
    Abstract: A touch sensitive processing apparatus comprises a touch sensitive interface for connecting electrodes of a touch screen to detect a proximity/touch event; a host interface for reporting the proximity/touch event; a halt interface; and an embedded processor configured for commanding the touch sensitive interface to cease detecting proximity/touch events and the host interface to cease reporting proximity/touch events if the halt interface is set in a first logic state.
    Type: Application
    Filed: September 19, 2017
    Publication date: March 22, 2018
    Inventors: Cheng-Han Lee, Chi-Hao Tang
  • Patent number: 9864471
    Abstract: The method and processor for analyzing two-dimension information are disclosed. A 2-D information generated from a touch panel/screen is obtained, wherein the 2-D information comprises a plurality of values distributed over a plurality of reduced 2-D coordinates. Then, an approaching/touching range on the touch panel/screen approached or touched by an approaching/touching object is detected, wherein a minimum of the plurality of values distributed over a boundary of the approaching/touching range is greater than a maximum of the plurality of values inside the approaching/touching range except the boundary.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: January 9, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Patent number: 9798427
    Abstract: A method and device for dual-differential sensing is disclosed. The sensing information can be generated from signals provided by a sensing device with a plurality of sensors. Each value of the sensing information corresponds to signals of three sensors, respectively. The sensing device is flexible and configured on a display. The noise effect of the display on the signal of each sensor corresponds to the distance between the display and the sensor. Besides, the noise effect of the display on each value of the sensing information corresponds to the distances between the display and the three sensors, respectively.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: October 24, 2017
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20170254843
    Abstract: The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 7, 2017
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Patent number: 9715310
    Abstract: The invention discloses a touch controller, a touch system, and a method for detecting a touch screen. At first, a full screen driven detection is performed on a touch screen to determine whether at least one external object touches or approaches the touch screen. Then, if the full screen driven detection represents that no external object touches or approaches the touch screen, an updating determination is performed to determine whether a plurality of reference values are updated during a predetermined updating period of time. If the updating determination represents that the reference values are not updated during the predetermined updating period of time, the reference values will be updated based on a first 2D sensing information.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 25, 2017
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Chi-Hao Tang
  • Patent number: 9689906
    Abstract: The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 27, 2017
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20170153765
    Abstract: A controller for position detection is disclosed. At least one first 1-D position corresponding to at least one external object is determined based on signals of a plurality of first sensors by self-capacitance detection. Each first 1-D position is determined based on a differential sensing information whose each value is based on signals of two first sensors by self-capacitance detection. Then, at least one second 1-D position corresponding to the at least one first 1-D position is determined based on signals of a plurality of second sensors by mutual-capacitance detection.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Patent number: 9606692
    Abstract: A controller for position detection is disclosed. At least one first 1-D position corresponding to at least one external object is determined based on signals of a plurality of first sensors by self-capacitance detection. Then, at least one second 1-D position corresponding to the at least one first 1-D position is determined based on signals of a plurality of second sensors by mutual-capacitance detection.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 28, 2017
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho