Patents by Inventor Su Chao-Ping

Su Chao-Ping 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).

  • Clock multiplier
    Patent number: 6977536
    Abstract: A clock multiplier capable of modulating the duty cycle of the output clock comprises a first clock multiplication circuit, an inverter, a first low pass filter, a second low pass filter and an amplifier, the first multiplication clock being operative to multiply the frequency of an input clock, the inverter being operative to invert the input clock, the first low pass filter receiving the output clock of the inverter for being charged or discharged, the second low pass filter receiving the output clock of the first clock multiplication circuit for being charged or discharged, the amplifier being operative to compare the output voltages of the first low pass filter and the second low pass filter to perform a feedback control, so as to modulate the duty cycle of the output clock of the first multiplication clock to approach 50%.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: December 20, 2005
    Assignee: Myson Century, Inc.
    Inventors: Chao Chin-Chieh, Su Chao-Ping, Chen Yen-Kuang
  • Clock multiplier
    Publication number: 20040232955
    Abstract: A clock multiplier capable of modulating the duty cycle of the output clock comprises a first clock multiplication circuit, an inverter, a first low pass filter, a second low pass filter and an amplifier, the first multiplication clock being operative to multiply the frequency of an input clock, the inverter being operative to invert the input clock, the first low pass filter receiving the output clock of the inverter for being charged or discharged, the second low pass filter receiving the output clock of the first clock multiplication circuit for being charged or discharged, the amplifier being operative to compare the output voltages of the first low pass filter and the second low pass filter to perform a feedback control, so as to modulate the duty cycle of the output clock of the first multiplication clock to approach 50%.
    Type: Application
    Filed: August 28, 2003
    Publication date: November 25, 2004
    Applicant: MYSON CENTURY, INC.
    Inventors: Chao Chin-Chieh, Su Chao-Ping, Chen Yen-Kuang