Patents by Inventor Shang-Tai Yeh

Shang-Tai Yeh 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: 20190155451
    Abstract: A touch sensitive keyboard system, provided by the present invention, includes a touch sensitive input device and a touch sensitive processing apparatus coupled to the touch sensitive input device. The touch sensitive input device includes parallel first electrodes, parallel second electrodes, parallel third electrodes and an elastic dielectric layer between the second and third electrodes. There is at least one approximation intersection area of one of the first electrodes and one of the second electrodes and at least one pressing intersection area of one of the second electrodes and one of the third electrodes inside each key area. In case the touch sensitive processing apparatus determines there is an external object influencing signals of the approximation and pressing intersection areas of one of the key areas, a key sign is transmitted to a host.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 23, 2019
    Inventors: SHANG-TAI YEH, CHUN-I LI
  • Patent number: 10281996
    Abstract: A stylus for commanding by maneuvering is provided. The stylus includes a communication module for connecting with a computing device. The computing device is equipped with a touch sensitive panel for detecting the location of the stylus on or near the touch sensitive panel. The stylus includes at least one posture sensor; a memory for storing a maneuver database; and a stylus processor. The maneuver database store a plurality of maneuvers, each with associated one or more sets of moving vectors and an associated command. The stylus processor is configured to receive a moving trajectory from the posture sensor and to calculate one or more sets of moving vectors; based on the calculated one or more sets of moving vectors, finding the associated maneuver and the associated command in the maneuver database; and transmitting the command to the computing device via the communication module.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: May 7, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Shang-Tai Yeh
  • Patent number: 10261633
    Abstract: The present application provides a touch sensitive processing method for configuring interconnection parameters between a touch panel and a touch sensitive processing apparatus in an electronic system. The method comprises: connecting, by an interconnection network of the apparatus, P first circuits of a first apparatus connector with a detecting circuit of the touch sensitive processing apparatus, respectively; detecting, by the detecting circuit, an impedance value of each of the first circuits sequentially via the interconnection network; and determining that there are M consecutive first touch sensitive electrodes connected to the M consecutive first circuits based on the impedance values.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: April 16, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Patent number: 10261610
    Abstract: The present invention provides a touch control apparatus capable of detecting a tilt angle and an axial direction of a stylus, wherein the stylus includes a first electrode at a tip of the stylus, a second electrode surrounding the first electrode. and a first button; the touch control apparatus comprising: a sensing circuit connected to a touch screen; a signal strength detecting circuit; and a processing module connected to the sensing circuit and the signal strength detection circuit, the processing module being configured for determining the status of the first button based on the modulation sequence; and determining the tilt angle and the axial direction of the stylus based on the electrical signals of a plurality of time periods.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: April 16, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Patent number: 10254897
    Abstract: The present application provides a touch sensitive processing method adaptable to a touch sensitive processing apparatus for detecting defects of a touch panel in an electronic system. The method comprises: connecting, by an interconnection network of the touch sensitive processing apparatus, second touch sensitive electrodes with a detecting circuit of the apparatus, respectively, connecting, by the interconnection network, at least one touch sensitive electrode with a drive circuit of the apparatus; having the drive circuit emit a drive signal via the at least one touch sensitive electrode; having the detecting circuit detect the drive signal via the second touch sensitive electrodes; calculating a phase shift between each neighboring pair of second touch sensitive electrodes receiving the drive signal; and determining at least one second touch sensitive electrode of the pair is faulty when the phase shift is larger than a phase shift threshold and reporting information related to the defect to a host.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: April 9, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Patent number: 10254861
    Abstract: The present invention provides a stylus for providing a tilt angle and an axial direction of a stylus body comprising: a first electrode at a tip of the stylus; a second electrode surrounding the first electrode; a first button; and a control module connected to the first and the second electrodes and the button, wherein the control module is configured for instructing the first electrode and the second electrode to each perform one of a plurality of modulations in each of a plurality of time periods based on the status of the first button, wherein the plurality of modulations include the following three types: instructing the first electrode to emit an electrical signal; instructing the second electrode to emit an electrical signal; and instructing both the first and the second electrodes to emit electrical signals simultaneously.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 9, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Patent number: 10248247
    Abstract: A touch sensitive processing method is applicable to a touch sensitive electronic system comprising a stylus, an audio processor coupling to the stylus, a touch screen, and a touch sensitive processing apparatus coupling to the touch screen. The method comprises having the audio processor driving a tip section of the stylus for emitting electrical signals; and having the touch sensitive processing apparatus receiving sensed electrical signals via the touch screen for determining a position where the tip section is touching or approximating the touch screen.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: April 2, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Shang-Tai Yeh
  • Patent number: 10234977
    Abstract: A pressure sensing touch device includes a control unit, and a pressure-sensing touch panel including a substrate, a first sensing layer, a first insulating layer, a driver layer, a second insulating layer and a second sensing layer; the first sensing layer, the driver layer and the second sensing layer electrically connected to the control unit for detecting the touch location of an external object and the pressure according to changes of capacitive coupling respectively between the first sensing layer and the driver layer and between the driver layer and the second sensing electrode. The deformation amount of the second insulating layer is greater than that of the first insulating layer when receiving a pressure, making closer distance between the driver layer and the second sensing layer and significant change of the capacitive coupling, for accurately detecting the pressure applied by the external object to the pressure-sensing touch panel.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 19, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Shang-Tai Yeh, Hsiao-Tsung Lee
  • Patent number: 10228800
    Abstract: The present invention provides a method and device for position detection. For detection of a touch position, a segment of surface acoustic wave (SAW) is provided multiple times to be propagated on a SAW touch panel, and the multiple SAW segments are received by the SAW touch panel. In addition, during or after reception, partial output electrical signals are provided based on different portions of each received SAW segment to construct a complete output electrical signal.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: March 12, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Shang-Tai Yeh, Teng-Wei Hsieh
  • Patent number: 10222908
    Abstract: The present invention provides a touch sensitive processing method for setting a palm rejection area. The method includes: setting a vertex of a palm rejection area based on a proximity or touch location of a stylus; setting a rejection area baseline vector extending from the vertex based on a stylus shaft vector of the stylus projected on a touch screen; defining an area covered by rotating the rejection area baseline vector around the vertex by a clockwise angle and an anticlockwise angle as the palm rejection area; and ignoring any proximity or touch event of an external conductive object detected in the palm rejection area.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: March 5, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Shang-Tai Yeh
  • Patent number: 10209788
    Abstract: A touch processor is provided by the present application. The touch processor detects the intensity of a third electrical signal, wherein a touch device induces a second electrical signal due to a first electrical signal, and the third electrical signal of the second electrical signal is transmitted from the touch device to an approached or touched object. Then, according to the intensity of the second electrical signal and the third electrical signal, the touch processor determines if there is a transmitter hovering on the touch device or not.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: February 19, 2019
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Shang-Tai Yeh
  • Patent number: 10162468
    Abstract: When at least one external object approaches or touches a touch sensor, profiles in a scanning signal corresponding to each external object will appear. The smallest value between the profiles corresponding to a first and a second external object is designated as a division value when the profiles corresponding to the first and the second external objects overlap. The overlapping profiles can be divided into the portion of the first external object and the portion of the second external object, respectively.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: December 25, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Patent number: 10162438
    Abstract: The present invention provides a stylus for providing a tilt angle and an axial direction of a stylus body, including: a first electrode at a tip of the stylus; a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled; and a control module connected to the first electrode and the second electrode, wherein the control module is configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, the control module is further configured to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: December 25, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Publication number: 20180364851
    Abstract: A pressure sensing touch device includes a control unit, and a pressure-sensing touch panel including a substrate, a first sensing layer, a first insulating layer, a driver layer, a second insulating layer and a second sensing layer; the first sensing layer, the driver layer and the second sensing layer electrically connected to the control unit for detecting the touch location of an external object and the pressure according to changes of capacitive coupling respectively between the first sensing layer and the driver layer and between the driver layer and the second sensing electrode. The deformation amount of the second insulating layer is greater than that of the first insulating layer when receiving a pressure, making closer distance between the driver layer and the second sensing layer and significant change of the capacitive coupling, for accurately detecting the pressure applied by the external object to the pressure-sensing touch panel.
    Type: Application
    Filed: December 14, 2017
    Publication date: December 20, 2018
    Inventors: Shang-Tai YEH, Hsiao-Tsung LEE
  • Patent number: 10156936
    Abstract: The present application provides a method for determining correspondences between multiple display processing apparatuses and multiple touch sensitive processing apparatuses. The method comprises: having a first display processing apparatus display a first prompt information on a first touch screen; having a first and a second touch sensitive processing apparatuses receive a first touch event; when the first touch event is from the first touch sensitive processing apparatus, determining the first touch screen is connected with the first touch sensitive processing apparatus; and when the first touch event is from the second touch sensitive processing apparatus, determining the first touch screen is connected with the second touch sensitive processing apparatus.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: December 18, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventors: Chin-Fu Chang, Shang-Tai Yeh
  • Publication number: 20180348908
    Abstract: A touch control human-machine interface device and an operation method thereof are disclosed. In the touch control human-machine interface device. The touch recognition device includes an insulative carrier, an upper electrode disposed on an upper surface of the insulative carrier, lower electrodes disposed on a lower surface of the insulative carrier, and conductive lines electrically connecting the upper electrode to the lower electrodes. When the user presses the upper electrode, the touch recognition device is pressed down to move the lower electrodes to contact an upper surface of a capacitive touch panel, a control unit can detect the capacitive touch panel to determine positions of the lower electrodes to define a XY coordinate system, so as to determine a coordinate of other lower electrode at the XY coordinate system. As a result, an identity of the user operating the touch recognition device can be defined by the determined coordinate.
    Type: Application
    Filed: May 9, 2018
    Publication date: December 6, 2018
    Inventor: Shang-Tai YEH
  • Publication number: 20180348901
    Abstract: The present invention provides a touch sensitive processing method including: having a sensing circuit of a touch sensitive processing apparatus sense an electrical signal emitted from a transmitter via multiple first electrodes according to a first sensing parameter to generate multiple first sensing results and sense the electrical signal via multiple second electrodes according to a second sensing parameter to generate multiple second sensing results; calculating a second coordinate value of the transmitter with respect to a second axis according to the first sensing results; calculating a first coordinate value of the transmitter with respect to a first axis according to the second sensing results; setting the second sensing parameter according to the second coordinate value; and setting the first sensing parameter according to the first coordinate value.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 6, 2018
    Inventor: SHANG-TAI YEH
  • Patent number: 10126894
    Abstract: The present invention discloses a position detection device including a first electrode layer, a second electrode layer, and a processor. The first electrode layer includes a plurality of first electrodes, and the second electrode layer includes a plurality of second electrodes. A gap is formed between the first electrode layer and the second electrode layer. The processor detects a plurality of capacitive values between the plurality of first electrodes and the plurality of second electrodes so as to measure the movement track of a conductive object passing through the gap.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: November 13, 2018
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Shang-Tai Yeh
  • Publication number: 20180314364
    Abstract: The present application provides a stylus for receiving a wireless radio frequency signal emitted from a touch panel or screen. The stylus includes a rod covered by dielectric material for user's handling; an electrode for receiving the wireless radio frequency signal; and a receiving circuit coupled to the electrode, wherein the receiving circuit is placed inside the rod.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 1, 2018
    Inventor: SHANG-TAI YEH
  • Publication number: 20180292922
    Abstract: When a touch sensor is approached or touched by a capacitive pen in a small area, the corresponding approach or touch signal might be slightly less than the threshold originally used for normal detection. By comparing the sum of the corresponding approach or touch signal and some adjacent signals with the threshold, the approach or touch of a small-area object that otherwise would not be detected by the original method can be determined. The capacitive pen can be made of bonded conductive fibers.
    Type: Application
    Filed: June 12, 2018
    Publication date: October 11, 2018
    Inventor: SHANG-TAI YEH