Patents by Inventor Yi-Zhi Zeng

Yi-Zhi Zeng 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).

  • Folded R-2R ladder current-steering digital to analog converter
    Patent number: 7646322
    Abstract: A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically coupled with a plurality of current sources with different weights. Therefore, the numbers of the resisters and current sources can be reduced, and efficient power saving and the high-speed operation can be achieved.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: January 12, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Nan-Ku Lu, Chun-Chieh Chen, Kai-Yao Lin, Yi-Zhi Zeng
  • FOLDED R-2R LADDER CURRENT-STEERING DIGITAL TO ANALOG CONVERTER
    Publication number: 20090128387
    Abstract: A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically coupled with a plurality of current sources with different weights. Therefore, the numbers of the resisters and current sources can be reduced, and efficient power saving and the high-speed operation can be achieved.
    Type: Application
    Filed: September 4, 2008
    Publication date: May 21, 2009
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: NAN-KU LU, CHUN-CHIEH CHEN, KAI-YAO LIN, YI-ZHI ZENG