Patents by Inventor PO-HAO KUO

PO-HAO KUO 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: 9317157
    Abstract: A clustered scan method of a capacitive touch device has steps of simultaneously providing driving signals in one driving cycle to multiple driving lines including the (i?j)th drive line to the (i+k)th drive line, and simultaneously providing driving signals in a next driving cycle to the drive lines including some of the drive lines driven in the previous driving cycle with a sum of the driving signal in each driving cycle greater than zero. When the stimulated drive lines include a bordering drive line, the driving lines are determined according to a relationship among i, j and k. Accordingly, the signal to noise ratio of the touch device can be increased and the adverse effect for common ground occurring between a measuring system and a human body can be reduced so that the multi-finger positioning issue can be resolved.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: April 19, 2016
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Tsz-Hsuan Chao, Yi-Shiang Lu, Chia-Hsing Lin, Po-Hao Kuo, Yi-Shu Li
  • Publication number: 20150234521
    Abstract: A clustered scan method of a capacitive touch device has steps of simultaneously providing driving signals in one driving cycle to multiple driving lines including the (i?j)th drive line to the (i+k)th drive line, and simultaneously providing driving signals in a next driving cycle to the drive lines including some of the drive lines driven in the previous driving cycle with a sum of the driving signal in each driving cycle greater than zero. When the stimulated drive lines include a bordering drive line, the driving lines are determined according to a relationship among i, j and k. Accordingly, the signal to noise ratio of the touch device can be increased and the adverse effect for common ground occurring between a measuring system and a human body can be reduced so that the multi-finger positioning issue can be resolved.
    Type: Application
    Filed: May 22, 2014
    Publication date: August 20, 2015
    Inventors: Tsz-Hsuan CHAO, Yi-Shiang LU, Chia-Hsing LIN, Po-Hao KUO, Yi-Shu LI
  • Patent number: 8896570
    Abstract: A detecting method for a touch device, the method includes the steps of reading all sensed values of a frame associated with the touch device, computing a difference between a maximum sensed value and a minimum sensed value of all the sensed values of the frame, comparing the difference with a base value to generate a comparison result and executing a corresponding operation based on the comparison result.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 25, 2014
    Assignee: Elan Microelectronics Corp.
    Inventors: Ching-Ting Chiu, Po-Hao Kuo, Chia-Hsing Lin
  • Patent number: 8866794
    Abstract: For a capacitive touch device having a capacitive touch sensor to be sensed to generate sensed values, a sensing apparatus and method statistically analyze the sensed values generated in a certain time period to evaluate the sensing quality thereof, discard the poor reliable sensed values, and re-sense the capacitive touch sensor to generate new sensed values, by which the resultant output signal will have improved reliability.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Elan Microelectronics Corporation
    Inventors: Chia-Hsing Lin, Po-Hao Kuo, Yi-Hsin Tao
  • Publication number: 20140160060
    Abstract: A detecting method for a touch device, the method includes the steps of reading all sensed values of a frame associated with the touch device, computing a difference between a maximum sensed value and a minimum sensed value of all the sensed values of the frame, comparing the difference with a base value to generate a comparison result and executing a corresponding operation based on the comparison result.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 12, 2014
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventors: Ching-Ting CHIU, Po-Hao KUO, Chia-Hsing LIN
  • Patent number: 8619056
    Abstract: Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 31, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Chia-Hsing Lin, Yi-Hsin Tao, Po-Hao Kuo, Hsin-Shieh Tsai, Min-Jhih Lin
  • Publication number: 20130249852
    Abstract: For a capacitive touch device having a capacitive touch sensor to be sensed to generate sensed values, a sensing apparatus and method statistically analyze the sensed values generated in a certain time period to evaluate the sensing quality thereof, discard the poor reliable sensed values, and re-sense the capacitive touch sensor to generate new sensed values, by which the resultant output signal will have improved reliability.
    Type: Application
    Filed: August 6, 2012
    Publication date: September 26, 2013
    Inventors: Chia-Hsing LIN, Po-Hao Kuo, Yi-Hsin Tao
  • Publication number: 20100188364
    Abstract: Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.
    Type: Application
    Filed: December 30, 2009
    Publication date: July 29, 2010
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventors: CHIA-HSING LIN, YI-HSIN TAO, PO-HAO KUO, HSIN-SHIEH TSAI, MIN-JHIH LIN