Patents by Inventor Stewart R Witchalls

Stewart R Witchalls 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).

  • Processing device network
    Patent number: 7197030
    Abstract: A network of processing devices is arranged to communicate by packets having an addressing header and a data portion. Within the network, audio telephony is implemented. A signaling packet is sent from a source processing device to a central location identifying a destination processing device. A signaling packet is sent from the central processing location to the destination processing device identifying the source processing device. A packet is supplied from the central location to the sourcing processing device identifying an address for the destination processing device, whereafter packets containing digitized audio signals are transmitted over said network directly between the source processing device and the destination processing device.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: March 27, 2007
    Assignee: British Telecommunications public limited company
    Inventor: Stewart R Witchalls
  • Multimedia call handling
    Patent number: 6671263
    Abstract: A multimedia telecommunications call centre receives incoming calls via a gateway, which transmits the call request to a multipoint controller. The multipoint controller controls call routing to a desired terminal on a network, with the physical call datastream being carried directly across the network without mediation by the multipoint controller, thereby obviating bottlenecks at the controller and providing scalability.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: December 30, 2003
    Assignee: British Telecommunications public limited company
    Inventors: John M. M Potter, Russell J Lang, Stewart R Witchalls
  • Processing device network
    Patent number: 6407996
    Abstract: A network of processing devices is arranged to communicate by packets having an addressing header and a data portion. Within the network, audio telephony is implemented. A signaling packet is sent from a source processing device to a central location identifying a destination processing device. A signaling packet is sent from the central processing location to the destination processing device identifying the source processing device. A packet is supplied from the central location to the sourcing processing device identifying an address for the destination processing device, whereafter packets containing digitized audio signals are transmitted over said network directly between the source processing device and the destination processing device.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: June 18, 2002
    Assignee: British Telecommunications public limited company
    Inventor: Stewart R Witchalls
  • Processing device network
    Publication number: 20010048678
    Abstract: A network of processing devices is arranged to communicate by packets having an addressing header and a data portion. Within the network, audio telephony is implemented. A signaling packet is sent from a source processing device to a central location identifying a destination processing device. A signaling packet is sent from the central processing location to the destination processing device identifying the source processing device. A packet is supplied from the central location to the sourcing processing device identifying an address for the destination processing device, whereafter packets containing digitized audio signals are transmitted over said network directly between the source processing device and the destination processing device.
    Type: Application
    Filed: July 17, 2001
    Publication date: December 6, 2001
    Applicant: BRITISH TELECOMMUNICATIONS
    Inventor: Stewart R. Witchalls