Patents by Inventor Kuo-Hsien Huang

Kuo-Hsien Huang 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: 11026309
    Abstract: An LED (Light Emitting Diode) drive circuit includes a magnetic device, a power transistor, a current-sense resistor, and a controller. The magnetic device has a first terminal for receiving an input voltage derived from an input of the LED drive circuit, and a second terminal. The magnetic device generates an output current to drive at least one LED. The power transistor has a drain coupled to the second terminal of the magnetic device, a control terminal, and a source. The current-sense resistor has a first terminal coupled to the source of the power transistor for forming a current input signal, and a second terminal coupled to ground. The controller generates a switching signal coupled to control the power transistor to switch current through the magnetic device based on both a programmable signal derived from the input of the LED drive circuit, and the current input signal.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: June 1, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Ta-Yung Yang, Chuh-Ching Li, Ming-Chieh Lee, Kuo-Hsien Huang
  • Patent number: 10868473
    Abstract: A secondary side controlled control circuit for power converter with synchronous rectifier is provided. The secondary side controlled control circuit comprises a primary side controller and a secondary side controller. The primary side controller generates a primary side switching signal for switching a primary side switch of the power converter. The secondary side controller generates a secondary side switching signal for switching a switch of the synchronous rectifier of the power converter. The secondary side controller generates a primary side control signal to control the primary side controller for controlling the primary side switching signal.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 15, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yung-I Chang, Kuo-Hsien Huang, Chen-Hua Chiu
  • Publication number: 20200107414
    Abstract: An LED (Light Emitting Diode) drive circuit includes a magnetic device, a power transistor, a current-sense resistor, and a controller. The magnetic device has a first terminal for receiving an input voltage derived from an input of the LED drive circuit, and a second terminal. The magnetic device generates an output current to drive at least one LED. The power transistor has a drain coupled to the second terminal of the magnetic device, a control terminal, and a source. The current-sense resistor has a first terminal coupled to the source of the power transistor for forming a current input signal, and a second terminal coupled to ground. The controller generates a switching signal coupled to control the power transistor to switch current through the magnetic device based on both a programmable signal derived from the input of the LED drive circuit, and the current input signal.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicant: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Ta-Yung YANG, Chuh-Ching LI, Ming-Chieh LEE, Kuo-Hsien HUANG
  • Patent number: 10561218
    Abstract: A light curing device includes a housing module and a lighting module. The lighting module includes a light emitter, a driver and a switch module. The light emitter includes a plurality of light-emitting elements configured to emit curing light into an irradiation space in the housing module. The driver is for driving the light-emitting elements, and includes a plurality of user-operable setting buttons corresponding to at least one of the light-emitting elements. When triggered, the switch module is operable to activate the driver to drive at least one of the light-emitting elements that corresponds to a selected one of the user-operable setting buttons to emit the curing light.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: February 18, 2020
    Assignee: QUAN MEI TECHNOLOGY CO., LTD.
    Inventor: Kuo-Hsien Huang
  • Patent number: 10531528
    Abstract: An LED drive circuit includes a controller, generating a switching signal to switch a magnetic device that receives an input voltage derived from an input of the LED drive circuit, for generating an output current to drive at least a LED. The controller includes an input circuit receiving a programmable signal correlated to the input of the LED drive circuit to generate a programmable current, the programmable current modulating a current input signal correlated to a switching current of the magnetic device to form a modulated current input signal, and a comparison circuit comparing a signal sourced from an oscillator and a voltage potential generated in response to the modulated current input signal for generating a current control signal. The switching signal is controlled in response to the current control signal for regulating the output current, and a level of the output current is correlated to the current control signal.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: January 7, 2020
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Ta-Yung Yang, Chuh-Ching Li, Ming-Chieh Lee, Kuo-Hsien Huang
  • Publication number: 20190350057
    Abstract: An LED drive circuit includes a controller, generating a switching signal to switch a magnetic device that receives an input voltage derived from an input of the LED drive circuit, for generating an output current to drive at least a LED. The controller includes an input circuit receiving a programmable signal correlated to the input of the LED drive circuit to generate a programmable current, the programmable current modulating a current input signal correlated to a switching current of the magnetic device to form a modulated current input signal, and a comparison circuit comparing a signal sourced from an oscillator and a voltage potential generated in response to the modulated current input signal for generating a current control signal. The switching signal is controlled in response to the current control signal for regulating the output current, and a level of the output current is correlated to the current control signal.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Applicant: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Ta-Yung YANG, Chuh-Ching LI, Ming-Chieh LEE, Kuo-Hsien HUANG
  • Patent number: 10412798
    Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: September 10, 2019
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Hyunchul Eum, Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Young Mo Yang, Young Je Lee, Moon Ho Choi, Moon Sik Song
  • Patent number: 10412796
    Abstract: A LED drive circuit according to the present invention comprises a controller and a programmable signal. The controller generates a switching signal coupled to switch a magnetic device for generating an output current to drive a plurality of LEDs. The programmable signal is coupled to regulate a current-control signal of the controller. The switching signal is modulated in response to the current-control signal for regulating the output current, and the level of the output current is correlated to the current-control signal.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: September 10, 2019
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Ta-Yung Yang, Chuh-Ching Li, Ming-Chieh Lee, Kuo-Hsien Huang
  • Patent number: 10097099
    Abstract: A power converter and a control method therefor are provided. The power converter includes a transformer, synchronous rectifier and a control circuit. A primary side of the transformer receives an input voltage, and a secondary side of the transformer generates a sensing signal. The synchronous rectifier is coupled to the secondary side of the transformer. The control circuit receives the sensing signal and detects a changing slope of the sensing signal, and accordingly generates a control signal to control the synchronous rectifier to be turned on or turned off, so as to regulate an output voltage of the power converter.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: October 9, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yung-I Chang, Kuo-Hsien Huang
  • Publication number: 20180098398
    Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 5, 2018
    Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.
    Inventors: Hyunchul EUM, Youngjong KIM, Kuo-Hsien HUANG, Chih-Chun CHUANG, Young Mo YANG, Young Je LEE, Moon Ho CHOI, Moon Sik SONG
  • Patent number: 9894975
    Abstract: A light curing device includes a plurality of LEDs, a driver, a switch module and a timer. The timer includes a plurality of time-setting buttons corresponding to different timing configurations, respectively. When the timer is activated by the switch module and one of the time-setting buttons is operated, the timer outputs an activating signal, and outputs a deactivating signal when a time duration defined by the corresponding timing configuration has elapsed. The driver drives at least one of the LEDs to emit curing light into an irradiation space in a housing module when triggered by the activating signal, and stops driving the LEDs to emit the curing light when triggered by the deactivating signal.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: February 20, 2018
    Assignee: QUAN MEI TECHNOLOGY CO., LTD.
    Inventor: Kuo-Hsien Huang
  • Patent number: 9872349
    Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: January 16, 2018
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Hyunchul Eum, Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Young Mo Yang, Young Je Lee, Moon Ho Choi, Moon Sik Song
  • Publication number: 20170373607
    Abstract: A power converter and a control method therefor are provided. The power converter includes a transformer, synchronous rectifier and a control circuit. A primary side of the transformer receives an input voltage, and a secondary side of the transformer generates a sensing signal. The synchronous rectifier is coupled to the secondary side of the transformer. The control circuit receives the sensing signal and detects a changing slope of the sensing signal, and accordingly generates a control signal to control the synchronous rectifier to be turned on or turned off, so as to regulate an output voltage of the power converter.
    Type: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yung-I CHANG, Kuo-Hsien HUANG
  • Patent number: 9826608
    Abstract: Provided is a standby current supplier including a bleeding circuit electrically connected to a dimmer and through which a first current flowing to the dimmer flows when the dimmer is in an off state, and a first controller configured to detect a first voltage corresponding to an input voltage generated by the dimmer and control the bleeding circuit based on the first voltage when the first voltage is lower than a predetermined first level.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: November 21, 2017
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Hyunchul Eum, Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Moon Ho Choi, Moon Sik Song
  • Patent number: 9819291
    Abstract: A direct-current (DC) motor control device includes first and second switches, a conducting element and a power storage element. The power storage element, the conducting element and the second switch are connected to each other and form a loop, and the first switch is connected to a common node between the power storage element and the conducting element. When the DC electric power source is normally connected to the DC motor control device, the first switch is turned on, and the conducting element establishes a unidirectional conduction from a DC motor to the power storage element while the second switch is turned off.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: November 14, 2017
    Assignee: Quan Mei Technology Co., Ltd.
    Inventors: Shiu-Ming Chang, Kuo-Hsien Huang
  • Patent number: 9800166
    Abstract: A power converter and a control method therefor are provided. The power converter includes a transformer, synchronous rectifier and a control circuit. A primary side of the transformer receives an input voltage, and a secondary side of the transformer generates a sensing signal. The synchronous rectifier is coupled to the secondary side of the transformer. The control circuit receives the sensing signal and detects a changing slope of the sensing signal, and accordingly generates a control signal to control the synchronous rectifier to be turned on or turned off, so as to regulate an output voltage of the power converter.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 24, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yung-I Chang, Kuo-Hsien Huang
  • Publication number: 20170155335
    Abstract: A secondary side controlled control circuit for power converter with synchronous rectifier is provided. The secondary side controlled control circuit comprises a primary side controller and a secondary side controller. The primary side controller generates a primary side switching signal for switching a primary side switch of the power converter. The secondary side controller generates a secondary side switching signal for switching a switch of the synchronous rectifier of the power converter. The secondary side controller generates a primary side control signal to control the primary side controller for controlling the primary side switching signal.
    Type: Application
    Filed: November 28, 2016
    Publication date: June 1, 2017
    Inventors: YUNG-I CHANG, KUO-HSIEN HUANG, CHEN-HUA CHIU
  • Publication number: 20170127790
    Abstract: A light curing device includes a housing module and a lighting module. The lighting module includes a light emitter, a driver and a switch module. The light emitter includes a plurality of light-emitting elements configured to emit curing light into an irradiation space in the housing module. The driver is for driving the light-emitting elements, and includes a plurality of user-operable setting buttons corresponding to at least one of the light-emitting elements. When triggered, the switch module is operable to activate the driver to drive at least one of the light-emitting elements that corresponds to a selected one of the user-operable setting buttons to emit the curing light.
    Type: Application
    Filed: August 10, 2016
    Publication date: May 11, 2017
    Inventor: Kuo-Hsien HUANG
  • Publication number: 20170127789
    Abstract: A light curing device includes a plurality of LEDs, a driver, a switch module and a timer. The timer includes a plurality of time-setting buttons corresponding to different timing configurations, respectively. When the timer is activated by the switch module and one of the time-setting buttons is operated, the timer outputs an activating signal, and outputs a deactivating signal when a time duration defined by the corresponding timing configuration has elapsed. The driver drives at least one of the LEDs to emit curing light into an irradiation space in a housing module when triggered by the activating signal, and stops driving the LEDs to emit the curing light when triggered by the deactivating signal.
    Type: Application
    Filed: August 10, 2016
    Publication date: May 11, 2017
    Inventor: Kuo-Hsien HUANG
  • Publication number: 20170135173
    Abstract: A light curing device includes a housing module and a lighting module. The lighting module includes at least one light-emitting diode (LED), a driver, and a pulse width modulator. The LED is disposed at the housing module, and is configured to be driven to emit curing light. The driver is operable in an activated state. When in the activated state, the driver is operable to supply current to the at least one LED for driving the at least one LED to emit the curing light. The pulse width modulator is configured to output a pulse width modulation signal to the driver for controlling the driver to supply the current intermittently when the driver is in the activated state.
    Type: Application
    Filed: April 20, 2016
    Publication date: May 11, 2017
    Applicant: Libelle Technology Co., LTD.
    Inventor: Kuo-Hsien HUANG