Patents by Inventor Thomas R. Griffiths

Thomas R. Griffiths 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).

  • Communication network control method
    Patent number: 5521971
    Abstract: A communication network (1) comprises a number of network nodes (2, 3, 4 and 5) linked together by transmission paths (6, 7 and 8). A network manager (9) controls acceptance of calls onto transmission paths by classifying an incoming call and selecting from the database (14) an appropriate mean to peak bit rate distribution. This selected distribution is then used with the monitored transmission path load to determine a posterior distribution which reflects the load. The decision to accept or reject the call is made on the basis of the posterior distribution by a call acceptance algorithm considering the effective bandwidth for example.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: May 28, 1996
    Assignee: British Telecommuncations, plc
    Inventors: Peter B. Key, Thomas R. Griffiths, Richard J. Gibbens, Francis P. Kelly
  • Telephone shelter
    Patent number: D304134
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: October 24, 1989
    Inventor: Thomas R. Griffiths