Patents by Inventor Ning Chung-Ho

Ning Chung-Ho 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).

  • Digital-to-analog converter with a Johnson code generator
    Patent number: 5424740
    Abstract: A digital-to-analog converter includes a generator responsive to a digital input signal, a set of switches each being directly connected to the generator, and a first and a second terminals connecting therebetween a resistor device having a plurality of nodes directly connected to the switches in order that a node voltage can be obtained between one of the nodes and one of the terminals to serve as an analog signal. Such converter has a low distortion/noise and can be used in a broad source voltage scope.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: June 13, 1995
    Assignee: Holtek Microelectronics Inc.
    Inventors: Herman Chang, Ning Chung-Ho