Patents by Inventor David Charles Grainger

David Charles Grainger 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: 8488594
    Abstract: According to embodiments of the present invention, there is provided an apparatus and a system for bridging communication signals. According to a non-limiting embodiment of the present invention, there is provided a bridging apparatus comprising a first interface connectable to a first signal source, the first signal source for conveying signals within a first frequency range. The bridging apparatus further comprises a second interface connectable to a second signal source, the second signal source for carrying signals within a second frequency range comprising a subset of the first frequency range. The bridging apparatus further comprises a bridging module having a bridged position in which it connects the first and second interfaces and a disconnected position in which the first and second interfaces are not connected, the bridging module being operable to selectively change from the disconnected position to the bridged position, responsive to detection of a triggering event.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: July 16, 2013
    Assignee: BCE Inc.
    Inventors: Frank Siu Hong Chan, David Charles Grainger
  • Patent number: 8488593
    Abstract: According to embodiments of the present invention, there is provided an apparatus and system for controlling signal filtering. According to some non-limiting embodiments, a selective filtering apparatus is provided. The selective filtering apparatus comprises an input interface connectable to a source of a composite signal within a first frequency range and a filtering device, coupled to the input interface. The filtering device comprises a filter and an output interface, the filter being operable to filter the composite signal and output an output signal within a second frequency range, the second frequency range being a subset of the first frequency range; the output interface being connectable to at least a portion of an in-premises telephone wiring. The selective filtering apparatus further comprises a triggering module being operable to cause the output interface to selectively output one of the output signal and the composite signal responsive to detection of a triggering event.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: July 16, 2013
    Assignee: BCE Inc.
    Inventors: Frank Siu Hong Chan, David Charles Grainger
  • Publication number: 20100067684
    Abstract: According to embodiments of the present invention, there is provided an apparatus and a system for bridging communication signals. According to a non-limiting embodiment of the present invention, there is provided a bridging apparatus comprising a first interface connectable to a first signal source, the first signal source for conveying signals within a first frequency range. The bridging apparatus further comprises a second interface connectable to a second signal source, the second signal source for carrying signals within a second frequency range, the second frequency range comprising a subset of the first frequency range.
    Type: Application
    Filed: December 27, 2006
    Publication date: March 18, 2010
    Inventors: Frank Siu Hong Chan, David Charles Grainger
  • Publication number: 20080298346
    Abstract: According to embodiments of the present invention, there is provided an apparatus and system for controlling signal filtering. According to some non-limiting embodiments, a selective filtering apparatus is provided. The selective filtering apparatus comprises an input interface connectable to a source of a composite signal within a first frequency range and a filtering device, coupled to the input interface. The filtering device comprises a filter and an output interface, the filter being operable to filter the composite signal and output an output signal within a second frequency range, the second frequency range being a subset of the first frequency range; the output interface being connectable to at least a portion of an in-premises telephone wiring. The selective filtering apparatus further comprises a triggering module being operable to cause the output interface to selectively output one of the output signal and the composite signal responsive to detection of a triggering event.
    Type: Application
    Filed: December 27, 2006
    Publication date: December 4, 2008
    Inventors: Frank Siu Hong Chan, David Charles Grainger