Patents by Inventor Thomas R. Giallorenzi

Thomas R. Giallorenzi 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).

  • Synchronous CDMA transmitter/receiver
    Patent number: 5583853
    Abstract: A multipoint-to-point CDMA communication system comprises a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel. On the one CDMA channel, the plurality of CDMA transmitting stations simultaneously send respective CDMA signals to the receiving station. In the receiving station, respective time differences are measured between a reference clock signal and the spreading codes in the CDMA signals from each of the CDMA transmitting stations; and these time differences are indicated in respective error signals which the CDMA receiving station sends on the feedback channel to each of the CDMA transmitting stations. Each CDMA station responds to its error signals by time shifting its spreading code such that it arrives in the receiving station in synchronization with the reference clock signal.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: December 10, 1996
    Assignee: Unisys Corporation
    Inventors: Thomas R. Giallorenzi, Mark T. Rafter, Kenneth C. Greenwood, Harry B. Press, Samuel C. Kingston
  • Synchronous multipoint-to-point CDMA communication system
    Patent number: 5499236
    Abstract: A multipoint-to-point CDMA communication system comprises a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel. On the one CDMA channel, the plurality of CDMA transmitting stations simultaneously send respective CDMA signals to the receiving station. In the receiving station, respective time differences are measured between a reference clock signal and the spreading codes in the CDMA signals from each of the CDMA transmitting stations; and these time differences are indicated in respective error signals which the CDMA receiving station sends on the feedback channel to each of the CDMA transmitting stations. Each CDMA station responds to its error signals by time shifting its spreading code such that it arrives in the receiving station in synchronization with the reference clock signal.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: March 12, 1996
    Assignee: Unisys Corporation
    Inventors: Thomas R. Giallorenzi, Mark T. Rafter, Kenneth C. Greenwood, Harry B. Press, Samuel C. Kingston