Patents by Inventor Kun-Hsien Li

Kun-Hsien Li 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).

  • Patent number: 8502589
    Abstract: A signal swing trimming apparatus calibrates a swing level of an output signal generated from a transmitting device to a receiving device including: a comparing device coupled to the output signal for comparing the swing level of the output signal with a target swing level and generating a comparison output signal, and an adjusting device coupled to the comparing device and the transmitting device for controlling the transmitting device to adjust the swing level of the output signal according to the comparison output signal, wherein the signal swing trimming apparatus is configured to calibrate the swing level of the output signal during a hand-shake process between the transmitting device and the receiving device.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: August 6, 2013
    Assignee: Mediatek Inc.
    Inventors: Kun-Hsien Li, Ding-Yu Hsin, Chien-Hua Chen, Chih-Pin Sun, Chih-Hsiang Liao, Chien-Hua Wu, Hung-Yueh Lin
  • Publication number: 20110125942
    Abstract: A signal swing trimming apparatus calibrates a swing level of an output signal generated from a transmitting device to a receiving device including: a comparing device coupled to the output signal for comparing the swing level of the output signal with a target swing level and generating a comparison output signal, and an adjusting device coupled to the comparing device and the transmitting device for controlling the transmitting device to adjust the swing level of the output signal according to the comparison output signal, wherein the signal swing trimming apparatus is configured to calibrate the swing level of the output signal during a hand-shake process between the transmitting device and the receiving device.
    Type: Application
    Filed: November 26, 2009
    Publication date: May 26, 2011
    Inventors: Kun-Hsien Li, Ding-Yu Hsin, Chien-Hua Chen, Chih-Pin Sun, Chih-Hsiang Liao, Chien-Hua Wu, Hung-Yueh Lin
  • Patent number: 7944247
    Abstract: An operating circuit includes a differential amplifier stage, which has a first input node for receiving a first input signal of a differential input, a second input node for receiving a second input signal of the differential input, a first output node for outputting a first output signal of a differential output, and a second output node for outputting a second output signal of the differential output; an offset current stage coupled to the first output node and the second output node for inducing a first offset current at the first output node and a second offset current at the second output node; and a first clamping device coupled to the first output node for selectively clamping an output voltage at the first output node according to the first output signal at the first output node.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: May 17, 2011
    Assignee: Mediatek Inc.
    Inventors: Kun-Hsien Li, Chih-Pin Sun, Hao-Ping Hong, Yung-Yu Lin
  • Publication number: 20090251191
    Abstract: An operating circuit includes a differential amplifier stage, which has a first input node for receiving a first input signal of a differential input, a second input node for receiving a second input signal of the differential input, a first output node for outputting a first output signal of a differential output, and a second output node for outputting a second output signal of the differential output; an offset current stage coupled to the first output node and the second output node for inducing a first offset current at the first output node and a second offset current at the second output node; and a first clamping device coupled to the first output node for selectively clamping an output voltage at the first output node according to the first output signal at the first output node.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 8, 2009
    Inventors: Kun-Hsien Li, Chih-Pin Sun, Hao-Ping Hong, Yung-Yu Lin