Patents by Inventor Sung-Jiun Tsai

Sung-Jiun 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).

  • Oscillator and control method
    Patent number: 10574182
    Abstract: An oscillator includes a voltage-controlled oscillator (VCO) circuit and a processing circuit. The VCO circuit generates an oscillating frequency according to a digital signal, in which the oscillating frequency is a first oscillating frequency if the digital signal has a first signal value. The processing circuit determines a second signal value of the digital signal according to the first oscillating frequency and a target oscillating frequency, in order to tune the oscillating frequency to a second oscillating frequency. The processing circuit performs an interpolation operation according to a first frequency difference value between the target oscillating frequency and the first oscillating frequency and a second frequency difference value between the second oscillating frequency and the first oscillating frequency to determine a target signal value of the digital signal, in order to adjust the oscillating frequency to the target oscillating frequency.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: February 25, 2020
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Yu-Che Yang, Sung-Jiun Tsai, Ka-Un Chan
  • OSCILLATOR AND CONTROL METHOD
    Publication number: 20190020307
    Abstract: An oscillator includes a voltage-controlled oscillator (VCO) circuit and a processing circuit. The VCO circuit generates an oscillating frequency according to a digital signal, in which the oscillating frequency is a first oscillating frequency if the digital signal has a first signal value. The processing circuit determines a second signal value of the digital signal according to the first oscillating frequency and a target oscillating frequency, in order to tune the oscillating frequency to a second oscillating frequency. The processing circuit performs an interpolation operation according to a first frequency difference value between the target oscillating frequency and the first oscillating frequency and a second frequency difference value between the second oscillating frequency and the first oscillating frequency to determine a target signal value of the digital signal, in order to adjust the oscillating frequency to the target oscillating frequency.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 17, 2019
    Inventors: Yu-Che Yang, Sung-Jiun Tsai, Ka-Un Chan