Patents by Inventor Leeor Pressman

Leeor Pressman 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).

  • Two-hop collocated satellite communications system
    Patent number: 4752925
    Abstract: A two-hop communications system utilizing two collocated spacecraft (Se and Sw) and two remote intersatellite exchange (RISE) means (Re and Rw) provides for communications between ground stations located in two or more defined subregions. Each satellite includes wide band transponders for relaying ground station transmissions to the RISEs. The RISEs convert first hop frequency division multiplexed (FDM) signals to time division multiplexed (TDM) for the second hop. Signals are coded by frequency, polarization and direction so as to avoid loss of bandwidth due to the two-hop approach.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: June 21, 1988
    Assignee: Hughes Aircraft Company
    Inventors: James D. Thompson, Harold A. Rosen, Leeor Pressman