Patents by Inventor Alexander S. Rae

Alexander S. Rae 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).

  • Soft decision convolutional code transmission systems
    Patent number: 4493082
    Abstract: A data transmission system in which data is transmitted in a form incorporating additional data providing for error correction at the receiver. The data is encoded in a transmitter using a signal mapping system which maps a number of original digits and also digits produced by a convolutional encoder. The data at the receiver is decoded using hard and soft decision decoding which can correct errors in the received data.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: January 8, 1985
    Assignee: Plessey Overseas Limited
    Inventors: John Cumberton, Alun E. Foster, Alexander S. Rae, Vernon J. Fernandes, Michael R. Carter