Patents by Inventor Chan Hyung Chung

Chan Hyung Chung 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).

  • Phase modulator
    Patent number: 5652552
    Abstract: A phase modulator that generates four different kinds of phases according to input data, using a counter and an adder. There is provided a phase modulator with a serial-to-parallel data converter for converting serial data into two parallel data which are reduced by half of the clock velocity; and a digital phase signal generator for generating digital signals having a phase difference, using a counter and an adder. In this manner, the digital signals have digital values similar to sine waves having a phase difference.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: July 29, 1997
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Chan Hyung Chung