Patents by Inventor Hiep Van Pham

Hiep Van Pham 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).

  • Radio communication system
    Patent number: 6084861
    Abstract: A radio communication system in which each frame having an imbalanced transmission speed is time-divided to a low speed transmission area and to a high speed transmission area according to a specified ratio in the time domain. An upload signal as a first-directional signal and a download signal as a second-directional signal are allocated to the low speed transmission area and to the high speed transmission area respectively. In a case where a high speed transmission request is issued from a personal station (PS) to a base station (BS), the order of the upload signal and that of the download signal is exchanged in the time domain within one frame, so that the download signal and the upload signal are allocated to the low speed transmission area and the high speed transmission area respectively.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: July 4, 2000
    Assignee: Uniden Corporation
    Inventors: Shuzo Kato, Kazuhiko Seki, Hiep Van Pham