Patents by Inventor Richard J B Reynolds

Richard J B Reynolds 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).

  • Method to reduce the distortion in a voice transmission over data networks
    Patent number: 7567548
    Abstract: The perceptual quality of voice signals used for Voice over IP (VoIP) systems is assessed. The content of the voice data packets may be altered in order to increase the perceived quality of the VoIP system.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 28, 2009
    Assignee: British Telecommunications plc
    Inventors: Richard J B Reynolds, Philip Gray, Michael P Hollier, Antony W Rix
  • Method to assess the quality of a voice communication over packet networks
    Patent number: 7058713
    Abstract: The present invention provides a test method which can determine whether a user terminal is capable of supporting a real time connection, such as a computer telephony link, with a network terminal while simultaneously supporting a connection with a WWW server.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 6, 2006
    Assignee: British Telecommunications PLC
    Inventors: Richard J B Reynolds, Philip Gray, Michael P Hollier, Antony W Rix
  • Test signalling
    Patent number: 7050924
    Abstract: The perceptibility of degradations caused to signals transmitted over a transmission medium is measured by generating one or more predetermined transmission degradation conditions (et) and subjecting a test signal (St) to the transmission degradation conditions (et) in a network simulation device. The degree M(e) to which the or each transmission degradation condition (et) is perceptible to the human perceptual system is measured and a data set is generated and stored for converting one or more transmission degradation conditions (et) to respective values of perceptibility M(e). The data set may be a look-up table or an empirically determined formula. The data set may then be used on live traffic (S?), by identifying objectively measured transmission degradation conditions (e) in the received signal (S?) and retrieving from the data set in the data storage means (7) a value of perceptibility (M) associated with the transmission degradation conditions (e) so identified.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: May 23, 2006
    Assignee: British Telecommunications public limited company
    Inventors: Antony W Rix, Philip Gray, Richard J B Reynolds, Michael P Hollier
  • Method to assess the quality of a voice communication over packet networks
    Publication number: 20040203438
    Abstract: The present invention provides a test method which can determine whether a user terminal is capable of supporting a real time connection, such as a computer telephony link, with a network terminal whilst simultaneously supporting a connection with a WWW server.
    Type: Application
    Filed: December 17, 2002
    Publication date: October 14, 2004
    Inventors: Richard J B Reynolds, Philip Gray, Michael P Hollier, Antony W Rix
  • Measurement of signal quality
    Patent number: 6718296
    Abstract: Apparatus for assessing the performance of telecommunications systems by comparison of a reference signal with the same signal as degraded by the system under test tends to give unreliable results when used to test connectionless packet-switching equipment. This is because variable delay in delivery of the individual packets can result in the test signal and reference signal becoming unsynchronised. This may lead to the apparatus recording a poorer performance than a human tester would have recorded. To overcome this problem, the invention separates the test signal into a series of individual sections, which are synchgronised and analysed separately, and a quality value, aggregated over all the sections, is derived.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: April 6, 2004
    Assignee: British Telecommunications public limited company
    Inventors: Richard J B Reynolds, Antony W Rix, Michael P Hollier, Gray Philip, Eleanor J Beamond