Patents by Inventor Lian-Cheng Tsai

Lian-Cheng Tsai 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: 20250089140
    Abstract: An LED driving apparatus, a microcontroller, and a control method for an LED module are provided. The LED driving apparatus includes a power supply module, a switch module, and a control module. The power supply module is configured to supply power to the LED module, in which the power supply module determines whether to trigger an overcurrent protection based on whether an output current exceeds a threshold current. The control module is configured to receive an overcurrent detection signal to control a conduction state of the switch module, so as to affect the current amount of the LED module. When the overcurrent detection signal indicates the output current exceeds the threshold current, the control module outputs a first control signal based on the overcurrent detection signal to control the switch module, to prevent the overcurrent protection from being triggered.
    Type: Application
    Filed: January 8, 2024
    Publication date: March 13, 2025
    Inventors: Chun-Yi WU, Lian-Cheng TSAI, Chih-Wei TSAI
  • Publication number: 20240298392
    Abstract: A light strip unplugging protection method includes: providing a light strip, wherein the light strip includes a plug including a power pin and a control pin; providing a socket corresponding to the plug, wherein the socket includes a power pin holder and at least one light strip control pin holder for electrically connecting with the power pin and the light strip control pin respectively; using a pulse-width modulation signal to drive the light strip on the light strip control pin holder to control the current passing therethrough; and when the pulse-width modulation signal is in a first state, detecting voltage or current of the light strip control pin holder; determining whether the light strip is unplugged according to the voltage or current; and when it is determined that the light strip is unplugged, power voltage on the power pin holder is turned off.
    Type: Application
    Filed: September 22, 2023
    Publication date: September 5, 2024
    Inventors: Lian-Cheng Tsai, CHUN-YI WU
  • Patent number: 10579569
    Abstract: A universal serial bus type-C interface circuit and a pin bypass method thereof are provided. The interface circuit includes a first configuration channel pin, a second configuration channel pin, a port manager and a port controller. The port manager has a first signal terminal and a second signal terminal. The port controller includes a multiplexer circuit and a control logic circuit. The multiplexer circuit is coupled to the first configuration channel pin, the second configuration channel pin, the first signal terminal and the second signal terminal. The control logic circuit is coupled to the multiplexer circuit and provides a multiplexer control signal to the multiplexer circuit in response to a switching request. The multiplexer circuit couples the first configuration channel pin and the second configuration channel pin to the first signal terminal and the second signal terminal respectively according to the multiplexer control signal.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: March 3, 2020
    Assignee: Nuvoton Technology Corporation
    Inventors: Chao-Chiuan Hsu, Lian-Cheng Tsai, Shih-Hsuan Yen
  • Publication number: 20190213159
    Abstract: A universal serial bus type-C interface circuit and a pin bypass method thereof are provided. The interface circuit includes a first configuration channel pin, a second configuration channel pin, a port manager and a port controller. The port manager has a first signal terminal and a second signal terminal. The port controller includes a multiplexer circuit and a control logic circuit. The multiplexer circuit is coupled to the first configuration channel pin, the second configuration channel pin, the first signal terminal and the second signal terminal. The control logic circuit is coupled to the multiplexer circuit and provides a multiplexer control signal to the multiplexer circuit in response to a switching request. The multiplexer circuit couples the first configuration channel pin and the second configuration channel pin to the first signal terminal and the second signal terminal respectively according to the multiplexer control signal.
    Type: Application
    Filed: August 10, 2018
    Publication date: July 11, 2019
    Applicant: Nuvoton Technology Corporation
    Inventors: Chao-Chiuan Hsu, Lian-Cheng Tsai, Shih-Hsuan Yen
  • Publication number: 20080258834
    Abstract: A pulse width modulation (PWM) circuit includes a turn on/off switch and a PWM controller. The first terminal of the turn on/off switch is coupled to a turn off voltage. The control terminal of the turn on/off switch receives a turn on/off signal to decide whether the circuit between the first terminal and the second terminal of the turn on/off switch is turned on or not. The PWM controller includes a PWM pin and a turn on/off device. The PWM pin is coupled to the second terminal of the turn on/off switch to output a PWM signal. The turn on/off device is coupled to the PWM pin to decide the turn on/off of the PWM controller according to a signal swing state of the PWM pin.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Applicant: WINBOND ELECTRONICS CORP.
    Inventors: CHEN-FAN TANG, CHENG-CHIH WANG, JONG-PING LEE, YI-CHE LIN, LIAN-CHENG TSAI, GUAN-HONG CHOU
  • Publication number: 20080180072
    Abstract: A pulse width modulation (PWM) circuit and a method for enabling the same are provided. The method includes the steps of: receiving a first power voltage and a second power voltage; providing a high-side driving power pin, wherein the peripheral circuit of the high-side driving power pin is adapted for generating a high-side driving voltage according to the first power voltage and the second power voltage; and enabling the PWM circuit when the high-side driving voltage is larger than the second power voltage.
    Type: Application
    Filed: April 16, 2007
    Publication date: July 31, 2008
    Applicant: WINBOND ELECTRONICS CORP.
    Inventors: Chia-Ching Lu, Shih-Hsuan Hsu, Lian-Cheng Tsai