Patents by Inventor Gareth Edward Allwright

Gareth Edward Allwright 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).

  • Reduction of false positive detection of signature matches in intrusion detection systems
    Patent number: 7802094
    Abstract: Detection of a signature in a data packet comprises performing a pre-classification of the packet, using header information and particularly a 5-tuple access control list, into one of a multiplicity of flows and directing the payload of the packet to a respective one of a multiplicity of deterministic finite state machines each of which stores a plurality of signatures as a sequence of states and acts only on the respective flow.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: September 21, 2010
    Assignee: Hewlett-Packard Company
    Inventors: Peter Furlong, Andrew Davy, Gareth Edward Allwright, Jerome Nolan
  • Trie search engines and ternary CAM used as pre-classifier
    Patent number: 7707217
    Abstract: A method performs a lookup on a search key word, employing a trie database including multiple trie blocks that include pointers to other trie blocks. Each trie is accessible by means of a segment of the search key. A selected section of the search key word is applied to a content addressable memory. In the event of an absence of a match of the selected section with an entry in the content addressable memory, a trie search is performed on the whole search key word. In the event of a match of the selected section with an entry in the content addressable memory, a partial trie search is performed, commencing with a first segment of the search key word after the selected section that has been matched in the content addressable memory.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: April 27, 2010
    Assignee: 3Com Corporation
    Inventors: Gareth Edward Allwright, Eugene O'Neill, Tin Lam, Kam Choi, Francisco Valentin Aquino
  • Automatic detector of media interface protocol type
    Patent number: 6868088
    Abstract: A detector for determining which interface protocol is in use by a serialiser/deserialiser, and comprising detecting channels composed of clocked delays and bit comparators for detecting the presence of idle signals coded according to either ten-bit or five-bit protocols using either one or two clocks.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: March 15, 2005
    Assignee: 3Com Corporation
    Inventors: Patrick Gibson, Gareth Edward Allwright, Kam Choi, Christopher Hay, David John Law
  • Automatic detector of media interface protocol type
    Publication number: 20020110144
    Abstract: A detector for determining which interface protocol is in use by a serialsier/deserialiser and comprising detecting channels composed of clocked delays and bit comparators for detecting the presence of idle signals coded according to either ten-bit or five-bit protocols using either one or two'clocks
    Type: Application
    Filed: April 26, 2001
    Publication date: August 15, 2002
    Inventors: Patrick Gibson, Gareth Edward Allwright, Kam Choi, Christopher Hay, David John Law