Patents by Inventor JI-TING LAI

JI-TING LAI 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).

  • Automatic frequency modulation circuit and automatic frequency modulation method applied to pulse-width modulation system
    Patent number: 10938379
    Abstract: An automatic frequency modulation circuit and an automatic frequency modulation method using efficiency statistics as a reference for frequency modulation applied to a pulse-width modulation (PWM) system are disclosed. The automatic frequency modulation circuit includes an oscillator unit, an on-time generating unit, a frequency adjusting unit and a frequency selecting unit. The oscillator unit receives a reference current and generate a clock signal. The on-time generating unit, coupled to the oscillator unit, receives a reference voltage and a first voltage of the oscillator unit and generates an on-time signal. The frequency adjusting unit, coupled to the on-time generating unit, receives the on-time signal and a PWM signal and generates a frequency adjusting signal. The frequency selecting unit is coupled to the frequency adjusting unit and automatically adjusts an original frequency according to the frequency adjusting signal to generate an adjusted frequency.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: March 2, 2021
    Assignee: Raydium Semiconductor Corporation
    Inventors: Ji-Ting Lai, Shen-Xiang Lin, Chih-Jen Hung
  • AUTOMATIC FREQUENCY MODULATION CIRCUIT AND AUTOMATIC FREQUENCY MODULATION METHOD APPLIED TO PULSE-WIDTH MODULATION SYSTEM
    Publication number: 20200395920
    Abstract: An automatic frequency modulation circuit and an automatic frequency modulation method using efficiency statistics as a reference for frequency modulation applied to a pulse-width modulation (PWM) system are disclosed. The automatic frequency modulation circuit includes an oscillator unit, an on-time generating unit, a frequency adjusting unit and a frequency selecting unit. The oscillator unit receives a reference current and generate a clock signal. The on-time generating unit, coupled to the oscillator unit, receives a reference voltage and a first voltage of the oscillator unit and generates an on-time signal. The frequency adjusting unit, coupled to the on-time generating unit, receives the on-time signal and a PWM signal and generates a frequency adjusting signal. The frequency selecting unit is coupled to the frequency adjusting unit and automatically adjusts an original frequency according to the frequency adjusting signal to generate an adjusted frequency.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 17, 2020
    Inventors: JI-TING LAI, SHEN-XIANG LIN, CHIH-JEN HUNG