Patents by Inventor Yeong-Lin Yu

Yeong-Lin Yu 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).

  • Programmable integer and fractional frequency divider
    Patent number: 7620140
    Abstract: A programmable integer and fractional frequency divider is provided. The programmable divider divides a frequency of an input signal by a first divisor to generate an output signal, and comprises a programmable integer frequency divider and a fractional number switch. The programmable integer frequency divider divides the frequency of the input signal by a second divisor to generate the output signal, wherein the second divisor is first or second integers depending on a divisor switching signal. The fractional number switch calculates a pulse count of the output signal, and generates the divisor switching signal to switch from the first to the second integer when the pulse count of the output signal equals to a predetermined pulse count determined by a fractional part of the first divisor, and receives a fractional divisor control signal to change the predetermined pulse count, thereby changing the fractional part of the first divisor.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: November 17, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Huan-Ke Chiu, Yeong-Lin Yu, Tzu-Yi Yang
  • PROGRAMMABLE INTEGER AND FRACTIONAL FREQUENCY DIVIDER
    Publication number: 20090168947
    Abstract: A programmable integer and fractional frequency divider is provided. The programmable divider divides a frequency of an input signal by a first divisor to generate an output signal, and comprises a programmable integer frequency divider and a fractional number switch. The programmable integer frequency divider divides the frequency of the input signal by a second divisor to generate the output signal, wherein the second divisor is first or second integers depending on a divisor switching signal. The fractional number switch calculates a pulse count of the output signal, and generates the divisor switching signal to switch from the first to the second integer when the pulse count of the output signal equals to a predetermined pulse count determined by a fractional part of the first divisor, and receives a fractional divisor control signal to change the predetermined pulse count, thereby changing the fractional part of the first divisor.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 2, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Huan-Ke Chiu, Yeong-Lin Yu, Tzu-Yi Yang
  • Programmable integer and fractional frequency divider
    Patent number: 7551707
    Abstract: A programmable integer and fractional frequency divider is provided. The programmable divider divides a frequency of an input signal by a first divisor to generate an output signal, and comprises a programmable integer frequency divider and a fractional number switch. The programmable integer frequency divider divides the frequency of the input signal by a second divisor to generate the output signal, wherein the second divisor is first or second integers depending on a divisor switching signal. The fractional number switch calculates a pulse count of the output signal, and generates the divisor switching signal to switch from the first to the second integer when the pulse count of the output signal equals to a predetermined pulse count determined by a fractional part of the first divisor, and receives a fractional divisor control signal to change the predetermined pulse count, thereby changing the fractional part of the first divisor.
    Type: Grant
    Filed: December 29, 2007
    Date of Patent: June 23, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Huan-Ke Chiu, Yeong-Lin Yu, Tzu-Yi Yang
  • PROGRAMMABLE INTEGER AND FRACTIONAL FREQUENCY DIVIDER
    Publication number: 20080285704
    Abstract: A programmable integer and fractional frequency divider is provided. The programmable divider divides a frequency of an input signal by a first divisor to generate an output signal, and comprises a programmable integer frequency divider and a fractional number switch. The programmable integer frequency divider divides the frequency of the input signal by a second divisor to generate the output signal, wherein the second divisor is first or second integers depending on a divisor switching signal. The fractional number switch calculates a pulse count of the output signal, and generates the divisor switching signal to switch from the first to the second integer when the pulse count of the output signal equals to a predetermined pulse count determined by a fractional part of the first divisor, and receives a fractional divisor control signal to change the predetermined pulse count, thereby changing the fractional part of the first divisor.
    Type: Application
    Filed: December 29, 2007
    Publication date: November 20, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Huan-Ke Chiu, Yeong-Lin Yu, Tzu-Yi Yang