Patents by Inventor Mark Woolley

Mark Woolley 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).

  • Testing BGA solder joints by localized pulsed-heat thermography
    Patent number: 7845849
    Abstract: A pulse of heat or cold is applied and conducted transversely through a ball grid array device and a printed circuit board via a selected one of the solder joints between them. Heat diffused through the other solder joints is neutralized by a thermal bias shield. The shield is then removed and a thermographic image of the printed circuit board is taken. The process is repeated for each solder joint, and the images are compared to identify defective solder joints.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: December 7, 2010
    Assignee: Avaya Inc.
    Inventors: Jae Choi, Mark Woolley
  • Telecommunications network having successively utilized different network addresses to a single destination
    Patent number: 6377677
    Abstract: To provide secure communications to a PBX (20,22) the PBX is connected to two different local exchanges of the PSTN. On recognising a telephone number designating calls to the PBX service switching points (2) apply to service control points (8) for route translations. The SCP (8) directs calls though the network alternately to network connections on one DLE (say 1c) and then to the other DLE (1b). In the event of a predetermined number of call failure on one of the route all subsequent calls are directed to the other route until a predetermined number of call failures occur on the other route where upon consecutive calls are again offered alternately.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: April 23, 2002
    Assignee: British Telecommunications public limited company
    Inventors: Roger G Ackerley, Peter B Key, Mark Woolley