Patents by Inventor Dang Vu

Dang Vu 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).

  • Publication number: 20050130683
    Abstract: A communication device (105,200) includes a cordless telephone (205) and a two way radio (210). The communication device (105,200) is adapted to place an active cordless telephone call in a low frequency mode in response to receiving an incoming two way radio communication. The communication device (105,200) is adapted to then establish communication within the two way radio communication. The communication device (105,200) periodically re-establishes the cordless telephone call to maintain communication with a cordless base station (120) until the two way radio communication is completed.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 16, 2005
    Inventors: Wayne Phang, Branko Avanic, Hiep Dang, Joseph Medvid, Dang Vu, Kevin Walkup
  • Patent number: 6480709
    Abstract: A receiver (600) uses a scanning technique (100) to minimize scan time. An initial bandwidth setting is selected that covers multiple channel frequencies (106). A signal detection step (108) is performed looking for channel activity. As channel activity is detected, the bandwidth of a baseband filter (628) is narrowed (140, 146). The radio remains programmed to the same channel while the bandwidth is varied. Once the last signal detection with the narrowest possible bandwidth setting has been determined (144, 150, 152) the radio is programmed to that channel. Thus, more than one channel frequency is capable of being scanned without reprogramming the radio to a new channel for each scan.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: November 12, 2002
    Assignee: Motorola, Inc.
    Inventors: Wayne M. Phang, John K. McKinney, Dang Vu
  • Publication number: 20020098819
    Abstract: A receiver (600) uses a scanning technique (100) to minimize scan time. An initial bandwidth setting is selected that covers multiple channel frequencies (106). A signal detection step (108) is performed looking for channel activity. As channel activity is detected, the bandwidth of a baseband filter (628) is narrowed (140, 146). The radio remains programmed to the same channel while the bandwidth is varied. Once the last signal detection with the narrowest possible bandwidth setting has been determined (144, 150, 152) the radio is programmed to that channel. Thus, more than one channel frequency is capable of being scanned without reprogramming the radio to a new channel for each scan.
    Type: Application
    Filed: January 19, 2001
    Publication date: July 25, 2002
    Inventors: Wayne M. Phang, John K. Mckinney, Dang Vu