Patents by Inventor Timothy C. Tozer

Timothy C. Tozer 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).

  • Optical communications system
    Patent number: 5416623
    Abstract: A line monitoring arrangement of an optical fibre communications system carrying system data signals includes a test sequence generator, an optical transmitter and a correlator. The generator generates a sequence of test pulses, and the optical transmitter repeatedly launches the sequence of test pulses into a first end of a transmission line forming part of the communications system. The correlator correlates signals received at the first end of the transmission line with the sequence of test pulses to identify returned test pulse sequences. The test pulse sequences and system data signals are superimposed onto the transmission line.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: May 16, 1995
    Assignee: British Telecommunications public limited company
    Inventors: John F. Dawson, Timothy C. Tozer, Simon M. James