Patents by Inventor Chien Yang

Chien Yang 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).

  • Circuit and method for controlling light emitting device, and integrated circuit therefor
    Patent number: 8405320
    Abstract: The present invention provides a transistor switch on a light emitting device channel, the transistor switch receiving a control voltage VG. A current source circuit controls the current on the light emitting device channel, the current source circuit requiring a minimum voltage VR for normal operation. The present invention further provides a dynamic headroom controller circuit which compares a voltage VS at a current outflow end of the transistor switch with the voltage VR to determine the relationship between the voltage VS and the voltage VR when the control voltage VG is higher than a reference voltage VH, and adjusts the voltage difference between the voltage VS and the voltage VR accordingly.
    Type: Grant
    Filed: March 27, 2011
    Date of Patent: March 26, 2013
    Assignee: Richtek Technology Corporation
    Inventors: Tsung-Wei Huang, Shui-Mu Lin, Nang-Ching Yeung, Ti-Ti Liu, Huan-Chien Yang
  • USB Connector
    Publication number: 20130072064
    Abstract: A USB connector comprising an insulating base, a plurality of conducting terminals, a circuit board and a housing is disclosed. The insulating base has a plurality of slots at an end of the insulating base and a plurality of abutting grooves on a surface of the insulating base, with each abutting groove communicating with a respective one of the slots. Each conducting terminal is inserted in a respective one of the slots and has an abutting portion arranged in one of the abutting grooves communicating with the respective slot. The circuit board abuts against the surface of the insulating base whereon forms the abutting grooves, with the circuit board having a plurality of electrical contacts electrically connecting with the abutting portions of the plurality of conducting terminals. The housing is hollow to receive the insulating base and circuit board.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 21, 2013
    Inventors: Su-Li LIU, Li-Chien YANG
  • Method for making a poly-lactic acid/silica composite
    Patent number: 8399542
    Abstract: Disclosed is a method for making a poly-lactic acid/silica composite. At first, silica particles are aminated, thus providing aminated silica particles. Secondly, the aminated silica particles are mixed with poly-lactic acid. Then, the mixture is blended and extruded by two micro-screws, thus providing a poly-lactic acid/silica composite. Thus, the mechanical properties of the poly-lactic acid are improved without affecting the biodegradability of the poly-lactic acid.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 19, 2013
    Assignee: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Cheng-Chien Yang, Jui-Ming Yeh, Tsao-Cheng Huang
  • Electromagnetic Wave-Absorbing Material
    Publication number: 20130056673
    Abstract: Disclosed is an electromagnetic wave-absorbing composite. To make the electromagnetic wave-absorbing composite, barium ferrite (BaFe12O19) and barium titanate (BaTiO3) are added into aniline during polymerization of the aniline. Thus, a core-shell structure is formed. The core-shell structure includes a magnetic/dielectric core and a conductive shell for covering the magnetic/dielectric core.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 7, 2013
    Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Cheng-Chien Yang, Kuo-Hui Wu
  • LED DEVICE, LED DRIVING CIRCUIT AND METHOD
    Publication number: 20130049612
    Abstract: A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.
    Type: Application
    Filed: November 10, 2011
    Publication date: February 28, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Hsing-Chien YANG, Wen-Hsin CHENG, Ying-Hao HSU, Lan-Ting HSU, Tsung-Hau CHANG
  • Adaptive two-stage voltage regulator and method for two-stage voltage regulation
    Patent number: 8373396
    Abstract: The present invention discloses an adaptive two-stage voltage regulator and a method for controlling the same. The adaptive two-stage voltage regulator includes: a voltage regulator for converting an input voltage (Vin) to a middle voltage (Vm), wherein Vin?Vin_max; a linear regulator for converting the middle voltage to an output voltage (Vout); and a middle voltage controller for adjusting the middle voltage according to (1) an input voltage indicator and one of (2a) an output voltage indicator and (2b) a predetermined reference signal, such that when Vin?Vout, Vm=Vout+?V and (Vout+?V)<Vin_max.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: February 12, 2013
    Assignee: Richtek Technology Corporation
    Inventors: Tsung-Wei Huang, Shui-Mu Lin, Chueh-Kuei Jan, Huan-Chien Yang
  • Method for Making a Poly-lactic acid/Silica Composite
    Publication number: 20130030107
    Abstract: Disclosed is a method for making a poly-lactic acid/silica composite. At first, silica particles are aminated, thus providing aminated silica particles. Secondly, the aminated silica particles are mixed with poly-lactic acid. Then, the mixture is blended and extruded by two micro-screws, thus providing a poly-lactic acid/silica composite. Thus, the mechanical properties of the poly-lactic acid are improved without affecting the biodegradability of the poly-lactic acid.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Cheng-Chien Yang, Jui-Ming Yeh, Tsao-Cheng Huang
  • Short circuit and open circuit protection for a boost converter
    Patent number: 8363369
    Abstract: A boost converter includes a load disconnect switch connected between a voltage input terminal and an inductor, a power switch connected to the inductor by a switching node, a diode connected between the switching node and a voltage output terminal, and an output capacitor connected to the voltage output terminal to provide an output voltage. A protection apparatus is connected to the load disconnect switch, switching node and power switch to monitor the voltage at the switching node and the output voltage to provide open circuit and short circuit protection for the boost converter.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: January 29, 2013
    Assignee: Richtek Technology Corp.
    Inventors: Shui-Mu Lin, Ti-Ti Liu, Huan-Chien Yang
  • Organic siloxane composite material containing polyaniline/carbon black and preparation method thereof
    Patent number: 8349918
    Abstract: An organic siloxane composite material containing polyaniline/carbon black and a preparation method thereof are disclosed. The organic siloxane composite material containing polyaniline/carbon black consists of a plurality of polyaniline/carbon black composites distributed in organic siloxane precursor while the organic siloxane composite material containing polyaniline/carbon black includes from 10 to 30 weight percent of polyaniline/carbon black composites. The preparation method of organic siloxane composite material containing polyaniline/carbon black includes the steps of: distributing a plurality of polyaniline/carbon black composites in organic siloxane precursor to produce a first solution; and adding a cross-linking agent into the first solution, after reaction with each other, an organic siloxane composite material containing polyaniline/carbon black is produced.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: January 8, 2013
    Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
    Inventors: Cheng-Chien Yang, Kuo-Hui Wu, Wang Tsae Gu, Yuen-Hsin Peng
  • CONTROLLER DRIVER FOR DRIVING DISPLAY PANEL
    Publication number: 20120262436
    Abstract: A controller driver for driving a display panel is provided. The controller driver comprises a timing control circuit, a data memory unit, a data selection unit and a data line driver circuit. The data memory unit stores image data. The data selection unit coupled to the data memory unit outputs the image data provided from the data memory unit as a display data, or generates the display data in accordance with a command or test patterns provided from an external processor. The data line driver circuit is coupled to the timing control circuit and the data selection unit. The data line driver circuit receives the display data from the data selection unit, and outputs corresponding grayscale voltages according to the control signal outputted from the timing control circuit.
    Type: Application
    Filed: September 7, 2011
    Publication date: October 18, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Hsing-Chien Yang
  • DISPLAY CONTROLLER DRIVER AND TESTING METHOD THEREOF
    Publication number: 20120206465
    Abstract: A display controller driver and a testing method thereof are provided. The display controller driver includes an image data memory, a timing control circuit, and a data line driving circuit. The image data memory stores display data. The timing control circuit obtains the display data from the image data memory. The data line driving circuit is coupled to the timing control circuit. The data line driving circuit receives the display data and outputs a grayscale voltage signal corresponding to the display data through at least one data-line output terminal of the display controller driver. In a test operation mode, the timing control circuit further transmits the display data from the image data memory to at least one test output port of the display controller driver.
    Type: Application
    Filed: August 17, 2011
    Publication date: August 16, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Hsing-Chien Yang
  • Method for adjusting displayed navigation direction using sensors and navigation device using the same
    Patent number: 8234062
    Abstract: A method for adjusting displayed map using sensors is disclosed, applied in a navigation device. The method includes steps of: calculating a GPS-based rotating angle of the navigation device based on location information detected by a GPS module of the navigation device when a coordinate error value of the navigation device is less than a predetermined value; using a sensor of the navigation device to detect the sensor-based rotating angle of the navigation device when the coordinate error value of the navigation device is greater than the predetermined value; rotating a map on the screen according to one of the GPS-based rotating angle and the sensor-based rotating angle depending on the coordinate error value.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: July 31, 2012
    Assignee: Mitac International Corp.
    Inventor: Chien-Yang Chang
  • Method and system for automatically creating POI by identifying geographic information on a screen of a portable navigation device
    Patent number: 8224565
    Abstract: A method for automatically creating POI by identifying geographic information on a screen of a portable navigation device is disclosed. A first geographic information is retrieved from an information page shown in the screen of the portable navigation device and recognized by comparing with the first geographic information with a geographic information of landmarks stored in a map database of the portable navigation device. It is determined whether the first geographic information is in the map database. If the geographic information is in the map database, a first GPS coordinate corresponding to the first geographic information is obtained and stored as a first POI.
    Type: Grant
    Filed: July 4, 2009
    Date of Patent: July 17, 2012
    Assignee: Mitac International Corp.
    Inventor: Chien-Yang Chang
  • Method and System for Automatically Creating PoI by Identifying Geographic Information on a Screen of a Portable Navigation Device
    Publication number: 20120179364
    Abstract: A method for automatically creating points of interest by identifying geographic information on a screen of a portable navigation device. A first geographic information is retrieved from an information page shown in the screen of the portable navigation device and recognized by comparing with the first geographic information with a geographic information of landmarks stored in a map database of the portable navigation device. It is determined whether the first geographic information is in the map database. If the geographic information is in the map database, a first GPS coordinate corresponding to the first geographic information is obtained and stored as a first POI.
    Type: Application
    Filed: March 6, 2012
    Publication date: July 12, 2012
    Applicant: MITAC INTERNATIONAL CORP.
    Inventor: Chien-Yang Chang
  • Driving circuit for driving light emitting diodes and dimmer
    Patent number: 8217584
    Abstract: A power supply unit provides a voltage, and a driving current to a series of light emitting diodes. A dimming unit adjusts a duty cycle of an original dimming signal to generate a dimming signal according to the driving current and an ideal current. A current sink coupled to the series of light emitting diodes adjusts a duty cycle of the driving current according to the dimming signal.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: July 10, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chien-Yang Chen, Po-Kun Hsieh, Tung-Hsin Lan, Ming-Chang Lin
  • Method of dimming
    Patent number: 8203279
    Abstract: A power supply unit provides a voltage, and a driving current to a series of light emitting diodes. A dimming unit adjusts a duty cycle of an original dimming signal to generate a dimming signal according to the driving current and an ideal current. A current sink coupled to the series of light emitting diodes adjusts a duty cycle of the driving current according to the dimming signal.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: June 19, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chien-Yang Chen, Po-Kun Hsieh, Tung-Hsin Lan, Ming-Chang Lin
  • BACKLIGHT MODULE DRIVING SYSTEM AND DRIVING METHOD THEREOF
    Publication number: 20120127212
    Abstract: A backlight module driving system and a driving method thereof are applied to a Liquid Crystal Display (LCD). In the LCD, a timing controller obtains a three-dimensional (3D) image signal provided by a graphics processor, generates a Liquid Crystal (LC) driving control signal, and generates a corresponding light adjusting signal according to a data writing time and a Vertical Blanking Interval (VBI) time of the LC driving control signal. A backlight driver obtains and analyzes the light adjusting signal, so as to disable a backlight module during the data writing time, and enable the backlight module during the VBI time.
    Type: Application
    Filed: May 6, 2011
    Publication date: May 24, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: SHIN-CHANG LIN, Bi-Hsien Chen, Chun-Chieh Chiu, Chien-Yang Chen, Tien-Yung Huang
  • DISPLAY CONTROLLER DRIVER AND METHOD FOR TESTING THE SAME
    Publication number: 20120120129
    Abstract: A display controller driver and a testing method therewith are provided. The display controller driver includes a timing control circuit, an image data memory, a data line driving circuit and a scan line driving circuit. The testing method includes controlling the scan line driving circuit by a control signal in a test operation mode, wherein the control signal is generated by an external test platform. The scan line driving circuit is tested and measured in accordance with a test pattern of the control signal.
    Type: Application
    Filed: August 12, 2011
    Publication date: May 17, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Hsing-Chien Yang
  • Method of scanning backlight driving lamps for an LCD
    Patent number: 8154219
    Abstract: A control signal is provided for turning on and turning off a lamp of a backlight source. For a first duration when the liquid crystal is rotating, adjust a frequency of the control signal to turn on and turn off the lamp of the backlight source consecutively or adjust a duty cycle of the control signal to turn off and then turn on the lamp of the backlight source. Thus, the backlight source has a luminance value for the first duration, and the control signal turns on the lamp of the backlight source for a second duration when the liquid crystal is in the steady state.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: April 10, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chi-Hsiu Lin, Chun-Chien Chiu, Chien-Yang Chen
  • High efficiency power system for a LED display system
    Patent number: 8120287
    Abstract: A LED display system includes multiple LEDs, a power converter to produce a supply voltage for the LEDs, and multiple drivers to drive the LEDs. According to the maximum one of the forward voltages of the LEDs, the drivers provides a feedback signal for the supply voltage control, and the feedback signal is amplified or digitized to reduce the voltage drop in the global power line.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: February 21, 2012
    Assignee: Richtek Technology Corp.
    Inventors: Shui-Mu Lin, Ti-Ti Liu, Huan-Chien Yang