Patents by Inventor Chang Kuang Chung

Chang Kuang Chung 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: 20170017343
    Abstract: A noise reduction capacitive touch panel comprises a sensing area, a non-sensing area, a main body, a plurality of driving electrodes, a plurality of driving electrode wires, a plurality of sensing electrodes, a plurality of sensing electrode wires, at least one noise sensing electrodes and at least noise sensing electrode wires. The sensing area is located in the middle of the panel and the rest area of the panel is the non-sensing area. The main body is a flat board having a normal line. The driving electrodes are strip electrodes and disposed on the main body. The driving electrodes are perpendicular to the normal line. The driving electrodes wires are disposed on the main body. The sensing electrodes are strip electrodes and disposed on the main body. Capacitive coupling is occurred between the driving electrodes and the sensing electrodes because there is a distance between them.
    Type: Application
    Filed: July 17, 2015
    Publication date: January 19, 2017
    Inventors: Chi Chin CHEN, Wen Yi LEE, Chia Wei WU, Chang Kuang CHUNG, Tse Yen LIN
  • Patent number: 9513740
    Abstract: An IC architecture improving the sensing latency time in Projected Capacitance Touch comprises a sensor, a touch control integrated circuit, a sensing bus, a driving bus, the sensor comprising a plurality of sensing electrodes, and a plurality of driving electrodes. The driving electrodes comprise a selected driving electrode. The sensing electrodes are scanned and the capacitance change in each is recorded while a driving electrode is selected as said selected driving electrode. The touch control integrated circuit comprises a sensing IC, a driving IC, and a micro-programmed control unit (MCU), wherein the sensing IC comprises a module on receiving sensing electrode signal. The module on receiving sensing electrode signal comprises two sets analog latches and two sets analog multiplexers. The two sets analog latches comprising first stage analog latches and second stage analog latches and the two sets analog multiplexers comprising first stage analog multiplexers and second stage analog multiplexers.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: December 6, 2016
    Assignee: INPUTEK CO., LTD.
    Inventors: Chang Kuang Chung, Sheng Chang Kuo
  • Publication number: 20160124540
    Abstract: An IC architecture improving the sensing latency time in Projected Capacitance Touch comprises a sensor, a touch control integrated circuit, a sensing bus, a driving bus, the sensor comprising a plurality of sensing electrodes, and a plurality of driving electrodes. The driving electrodes comprise a selected driving electrode. The sensing electrodes are scanned and the capacitance change in each is recorded while a driving electrode is selected as said selected driving electrode. The touch control integrated circuit comprises a sensing IC, a driving IC, and a micro-programmed control unit (MCU), wherein the sensing IC comprises a module on receiving sensing electrode signal. The module on receiving sensing electrode signal comprises two sets analog latches and two sets analog multiplexers. The two sets analog latches comprising first stage analog latches and second stage analog latches and the two sets analog multiplexers comprising first stage analog multiplexers and second stage analog multiplexers.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 5, 2016
    Inventors: Chang Kuang CHUNG, Sheng Chang KUO
  • Publication number: 20150077382
    Abstract: A projected capacitive touch panel comprises a triangle waveform generator, a plurality of analog switches, a plurality of sample and hold circuits. In addition, it also comprises a single conductive layer and flexible printed connectors. The single conductive layer is made of many sensing lines with high resistance. A triangle waveform is generated by the triangle waveform generator. The triangle waveform is transmitted to the sensing lines via the plurality of analog switches. In a rising stage, the plurality of sample and hold circuits are in their hold state. In a declining stage, the sample and hold circuits are in their sample state. The sample and hold circuit collects voltage deviation depending on resistance deviation on a sensing line. And higher resistance deviation can induce higher deviation voltage in the sensing line.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 19, 2015
    Applicant: Inputek Co., Ltd
    Inventors: Chang Kuang CHUNG, Sheng Chang KUO
  • Publication number: 20140269194
    Abstract: The three-dimensional touch system by acoustic waves comprises of a plurality of sensors and their controllers. The three-dimensional touch system implements the any or a combination of three different sensing methods. The first is an active wave triangulation location method that involves a plurality of receivers and an active wave transceiver. The second is a passive wave triangulation location method that involves a plurality of transceivers and a passive wave receiver. The last method, multi-triangulation location, uses different transceivers (or receivers) to input a multitude of different acoustic waves. Also, it is important that a calibration system be used to ensure that the transceivers and receivers are accurate in their readings.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Applicant: INPUTEK INC.
    Inventors: Chun Yu CHEN, Chang Kuang CHUNG
  • Publication number: 20140240274
    Abstract: The present invention provides a single-layer capacitive touch panel for multi-point sensing. The capacitive touch panel includes a single patterned touch-sensing layer. When a touch occurs at a certain point on the capacitive touch panel, the generated coupling signal passes through the patterned touch-sensing layer along a determined path so that the coupling signal and thus the location of the certain touch point can be precisely detected. At least two touch points on the capacitive touch panel can be simultaneously detected by enforcing asynchronous scanning at four detecting points at four corners of the capacitive touch panel. Additionally, the single-layer capacitive touch panel can be partitioned into N blocks so as to accomplish the simultaneous sensing of 2×N touch points on the touch panel.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: INPUTEK INC.
    Inventors: Chang Kuang CHUNG, Sheng Chang KUO
  • Publication number: 20130342503
    Abstract: A signal enhancing method for capacitive touch panel of mobile device provides a reference potential by a reference bar that is next to a sensor bar, wherein when the reference potential is a ground potential, the reference bar becomes a ground (GND) bar. The sensor bar and GND bar may comprise a plurality of tiny sensor bars and a plurality of tiny GND bars, respectively; and may further comprise fishbone sensor bars and fishbone GND bars. The plurality of tiny sensor bars and plurality of tiny GND bars are arranged in an alternative disposition. In this way, when a touch panel is touched, a tiny sensor bar and adjacent tiny GND bar are both touched so as to obtain a large coupling capacitance.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 26, 2013
    Inventors: Chun Yu CHEN, Chang Kuang CHUNG, Ming Hui HUNG, Po Hsuan CHIANG
  • Patent number: 7855702
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: December 21, 2010
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung
  • Patent number: 7737926
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: June 15, 2010
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung
  • Patent number: 7569997
    Abstract: This invention is an LED lighting intensity control by subdivision of PWM intervals to resolve the wavelength and luminance shifting problems that are caused by increasing heat and junction temperatures.
    Type: Grant
    Filed: May 6, 2007
    Date of Patent: August 4, 2009
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung
  • Publication number: 20080272276
    Abstract: This invention is an LED lighting intensity control by subdivision of PWM intervals to resolve the wavelength and luminance shifting problems that are caused by increasing heat and junction temperatures.
    Type: Application
    Filed: May 6, 2007
    Publication date: November 6, 2008
    Inventors: Hsin Chiang HUANG, Chang Kuang Chung
  • Publication number: 20080122762
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Application
    Filed: November 24, 2006
    Publication date: May 29, 2008
    Inventors: Hsin Chiang Haung, Chang Kuang Chung
  • Publication number: 20080122764
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Application
    Filed: May 4, 2007
    Publication date: May 29, 2008
    Inventors: Hsin Chiang Huang, Chang Kuang Chung