Patents by Inventor Desmond Coughlin

Desmond Coughlin 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).

  • Patent number: 5781538
    Abstract: The present invention relates to a subscriber unit in a wireless personal communications system (WPCS). In one embodiment, the subscriber unit includes a digital dataport for modemless communication of digital signals. Another preferred embodiment provides for a subscriber unit having a cable television transport module for modulating and demodulating signals over unused bandwidth available on cable television lines.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 14, 1998
    Assignee: Hughes Electronics Corporation
    Inventors: Kalyan Ganesan, Ranjan Pant, Victor Liau, Tayyab Khan, Desmond Coughlin, Harry Johnson
  • Patent number: 5758294
    Abstract: The present invention relates to a radio port in a wireless personal communications system. The radio port includes a first channel in communication with a first subscriber unit, a second channel in communication with a second subscriber unit, and a switching device connecting the first channel to the second channel so that the first subscriber unit may communicate directly with the second subscriber unit. In another preferred embodiment, the radio port includes a plurality of antennas, an RF receive section, an RF transmit section, an analog port adapted for connection to an analog telephone line, a digital dataport for receiving and transmitting digital signals, and a databus interconnecting the RF receive section, RF transmit section, analog port, and digital dataport. The RF receive section includes a diversity selection unit receiving an input signal from each of the antennas. The RF transmit section generates an output signal to be transmitted over at least one of the antennas.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 26, 1998
    Assignee: Hughs Electronics Corporation
    Inventors: Kalyan Ganesan, Ranjan Pant, Victor Liau, Tayyab Khan, Desmond Coughlin, Harry Johnson