Patents by Inventor Yuh-Diahn Wang

Yuh-Diahn Wang 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: 7728750
    Abstract: A display panel driver including a binary-weighted current-type D/A converter and a source follower with current mirror is provided. The binary-weighted current-type D/A converter receives n input signals and sends a D/A output voltage signal based on 2n?1 times a reference current. The source follower with current mirror receives the D/A output voltage signal and sends 2n?1 times the reference current to the output of the source follower with current mirror, so as to output a output voltage and drive the display panel.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: June 1, 2010
    Assignee: Holtek Semiconductor, Inc.
    Inventors: Yuh-Diahn Wang, Yan-Kai Huang
  • Publication number: 20090303095
    Abstract: A display panel driver including a binary-weighted current-type D/A converter and a source follower with current mirror is provided. The binary-weighted current-type D/A converter receives n input signals and sends a D/A output voltage signal based on 2n?1 times a reference current. The source follower with current mirror receives the D/A output voltage signal and sends 2n?1 times the reference current to the output of the source follower with current mirror, so as to output a output voltage and drive the display panel.
    Type: Application
    Filed: September 3, 2008
    Publication date: December 10, 2009
    Applicant: HOLTEK SEMICONDUCTOR INC.
    Inventors: Yuh-Diahn WANG, Yan-Kai HUANG
  • Patent number: 5581212
    Abstract: A fully differential, wide-band transconductance-transimpedance amplifier with a tuneable gain is disclosed. The amplifier includes a transconductance stage for generating a current signal from an inputted voltage signal. The amplifier also has a current gain stage for amplifying the current signal generated by the transconductance stage. Additionally, the amplifier includes a transimpedance stage for generating an output voltage signal from the amplified current signal generated in the current gain stage.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: December 3, 1996
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Chiun Huang, Chorng-Kuang Wang, Wen-Chi Wu, Yuh-Diahn Wang
  • Patent number: 5451902
    Abstract: A fully differential, wide-band transconductance-transimpedence amplifier with a tuneable gain is disclosed. The amplifier includes a transconductance stage for generating a current signal from an inputted voltage signal. The amplifier also has a current gain stage for amplifying the current signal generated by the transconductance stage. Additionally, the amplifier includes as transimpedance stage for generating an output voltage signal from the amplified current signal generated in the current gain stage.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: September 19, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Chiun Huang, Chorng-Kuang Wang, Wen-Chi Wu, Yuh-Diahn Wang
  • Patent number: 5418492
    Abstract: The present invention comprises a fully differential non-op-amp based BJT biquad filter. The biquad filter comprises an unity gain follower receiving a positive and a negative differential input signals for generating a positive and a negative differential output signals. The biquad filter further includes a first positive feedback line connecting the positive output signal to the positive input signal and a second positive feedback line connecting the negative output signal to the negative input signal. The first positive feedback line includes a first capacitor connected in series therein and the second positive feedback line includes a second capacitor connected in series therein wherein the first and the second capacitors are of substantially equal capacitance. The unity gain follower further comprises a plurality of bipolar NPN devices and resistors connected between a common higher DC voltage and a common lower DC voltage through a constant DC current emitter.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: May 23, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Chorng-Kuang Wang, Chen-Yi Huang, Po-Chiun Huang, Yuh-Diahn Wang