Patents by Inventor Damian M. Poole

Damian M. Poole 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: 4855737
    Abstract: A digital signal is used for railway track circuit signalling. A digital signal comprises a pseudo-random binary sequence selected from a set of such sequences. The set is chosen to give the lowest possible cross-correlation between different sequences, to minimize the risk of false identification. Gold codes are suitable. One of the sequences indicates the absence of a train from the track section and this code is generated until an indication is given by a train detector that a train is present. Generation of the train absence signal is then inhibited, and other sequences are generated providing information to the train. The generated sequences are received and coded in a fail-safe decoder.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: August 8, 1989
    Assignee: General Signal Corporation
    Inventor: Damian M. Poole