Patents by Inventor William Levan

William Levan 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).

  • Subchannelization scheme for use in a broadband communications system
    Patent number: 5959660
    Abstract: An apparatus and method for subchannelizing a wide band data channel into plural narrow band subchannels. In particular, the apparatus and method functioning so as to subchannelize a standard television channel to permit data transfer over plural data channels of smaller bandwidth in a full-duplex, asymmetric hybrid network communication system.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: September 28, 1999
    Assignee: Hybrid Networks, Inc.
    Inventor: William Levan
  • Broadband communication system using TV channel roll-off spectrum
    Patent number: 5956346
    Abstract: An apparatus and method for channelizing wide band data at radio frequencies (RF) above that of a highest television channel a television headend is equipped to utilize or below 54MHz. In particular, the apparatus and method functioning so as to transmit 2MHz subchannels of data at roll-off band frequencies to at least one client in full-duplex, asymmetric hybrid network communication system.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: September 21, 1999
    Assignee: Hybrid Networks, Inc.
    Inventor: William Levan