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).

  • Publication number: 20120068954
    Abstract: The method and device for converting sensing information are disclosed. A dual-differential sensing information is obtained and then converted into a sensing information, wherein the touch related sensing information having two peaks in a pair of zero-crossings is converted into quasi signal values.
    Type: Application
    Filed: November 30, 2011
    Publication date: March 22, 2012
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20120016628
    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: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Publication number: 20120013393
    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: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Publication number: 20120013561
    Abstract: A method and device for determining a single touch or multiple touches is disclosed. A touch related sensing information with a single zero-crossing is used for determining a pair of values, and the locations of a pair of centroids are calculated depending on the pair of values. The distance between the locations of the pair of centroids can be used to determine whether the number of touches is one or more.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20120007831
    Abstract: A method and device for position detection are disclosed. A self-capacitance detection can be performed by a sensing device. According to the result of the self-capacitance detection, a first mutual-capacitance detection can be performed for determining one or more first 1-D positions. According to the result of the first mutual-capacitance detection, a second mutual-capacitance detection can be performed for determining one or more second 1-D positions corresponding to each first 1-D position. One or more 2-D positions can be provided according to the one or more second 1-D positions corresponding to each first 1-D position. Besides, during the self-capacitance detection, the first mutual-capacitance detection, and the second mutual-capacitance detection, a touch related sensing information corresponding to a touch that covers a wide area can be neglected for palm rejection.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110304585
    Abstract: A method and device for signal detection is disclosed. At least one detection period is predefined for detecting a signal of a signal source, a differential signal of a pair of signal sources, or a dual-differential signal of three signal sources during at least one clock cycle, wherein the detection evades the period of a predictable noise.
    Type: Application
    Filed: August 24, 2011
    Publication date: December 15, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110291669
    Abstract: A method and device for automatically calibrating touch detection is disclosed. The present invention includes providing a sensing layer including a plurality of sensors, and each sensor senses a sensing range, and the sensing ranges of the sensors intersecting each other to form a crossing array; continuously detecting signals of the sensors as a detection signal set; performing update of an initial signal set based on the detection signal set; and when a default signal set does not match the initial signal set and the default signal set matches the detection signal set, performing update of the initial signal set.
    Type: Application
    Filed: May 23, 2011
    Publication date: December 1, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang
  • Publication number: 20110084928
    Abstract: The method and device for analyzing two-dimension sensing information are disclosed. The two-dimension (2-D) sensing information is analyzed for determining touch related sensing information. The touch related sensing information may include touch related sensing information with inner lower values within outer high values and with inner higher values within outer low values.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084931
    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: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084923
    Abstract: A method for parallel-scanning differential touch detection is disclosed herein. The method includes generating a plurality of first outputs by a differential unit according to a plurality of first inputs provided by a plurality of sensors of a touch panel in each scan of total i scans, herein, the kth first output in the jth scan of the total i scans is the (i*(k?1)+j)th output in the continuous first outputs, i?2, j?1, k?1, and i, j, k are natural numbers. Wherein, the differential unit has a plurality of subtractors and the inputs of the subtractors are connected in series. By doing so, the noises between a touch panel and a display can be eliminated.
    Type: Application
    Filed: October 11, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Publication number: 20110084924
    Abstract: A method and device for signal detection is disclosed. At least one detection period is predefined for detecting a signal of a signal source, a differential signal of a pair of signal sources, or a dual-differential signal of three signal sources during at least one clock cycle.
    Type: Application
    Filed: October 11, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
  • Publication number: 20110084937
    Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084930
    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: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110087455
    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: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084936
    Abstract: The method and device for capacitive position detection are disclosed. The touch related sensors within a sensing device with a plurality of sensors are detected first. Therefore at least a range of the mutual capacitance detection for detecting sensing information can be determined according to the touch related sensors. The sensing information within the range of the mutual capacitance detection can be used for generating a two-dimension sensing information.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084929
    Abstract: A method and device for position detection are disclosed. A self-capacitance detection can be performed by a sensing device. According to the result of the self-capacitance detection, a first mutual-capacitance detection can be performed for determining one or more first 1-D positions. According to the result of the first mutual-capacitance detection, a second mutual-capacitance detection can be performed for determining one or more second 1-D positions corresponding to each first 1-D position. One or more 2-D positions can be provided according to the one or more second 1-D positions corresponding to each first 1-D position. Besides, during the self-capacitance detection, the first mutual-capacitance detection, and the second mutual-capacitance detection, a touch related sensing information corresponding to a touch that covers a wide area can be neglected for palm rejection.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084926
    Abstract: The method and device for converting sensing information are disclosed. Each first touch related sensing information of a first sensing information is detected. At least one of the first touch related sensing information is converted. Each converted first touch related sensing information is replaced by a corresponding second touch related sensing information, whereby the first sensing information is converted into a second sensing information.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
  • Publication number: 20110084927
    Abstract: A method and device for determining a single touch or multiple touches is disclosed. A touch related sensing information with a single zero-crossing is used for determining a pair of values, and the locations of a pair of centroids are calculated depending on the pair of values. The distance between the locations of the pair of centroids can be used to determine whether the number of touches is one or more.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho