| Patent Number |
Title Of Patent |
Date Issued |
| RE35946 |
Optical fibre amplifier with fluorescent additive and method of amplifying signals using same |
November 3, 1998 |
| An optical fibre for use in fibre lasers has the lasing additive eg Er.sup.3+, concentrated in center of the core. Preferably the core has an inner region which contains the additive and an outer region which is dopant free. The concentration of the dopant reduces the pump threshold |
| RE33460 |
Endface assessment |
November 27, 1990 |
| Features of the endface of a dielectric member are assessed by means of a reflected diffraction pattern.A plurality of light beams 6, 7 which intersect in a region containing the endface 8 can be used to generate a diffraction pattern 10 which subtends an angle of at least 180.degree. at |
| D354061 |
Telephone handset |
January 3, 1995 |
|
| D348069 |
Video conference screen |
June 21, 1994 |
|
| D346605 |
Video Conference camera screen |
May 3, 1994 |
|
| D346604 |
Transition pattern between opaque border and transparent screen surface for video screen |
May 3, 1994 |
|
| D344272 |
Telephone handset |
February 15, 1994 |
|
| D344083 |
Telephone base |
February 8, 1994 |
|
| D342517 |
Video conference cabinet |
December 21, 1993 |
|
| D342247 |
Videophone base |
December 14, 1993 |
|
| D339131 |
Telephone handset |
September 7, 1993 |
|
| D320990 |
Antenna |
October 22, 1991 |
|
| D295409 |
Telephone handset |
April 26, 1988 |
|
| 7451449 |
Work allocation system |
November 11, 2008 |
| A work allocation system has a plurality of agents that bid for work in accordance with preferences and behavior of corresponding resources. Each agent represents a group of resources and is arranged to evaluate the likelihood that at least one resource in the group can carry out a work |
| 7444033 |
Method and apparatus for extracting pixel values |
October 28, 2008 |
| The luminance and chrominance values of pixels encoded according to MPEG or JPEG encoding are extracted using a forward discrete cosine transform (DCT). The forward DCT used in MPEG encoding is analyzed to derive a set of equations which directly relate a pixel value in an encoded image |
| 7425981 |
Video pre-processing |
September 16, 2008 |
| A foreground object part is distinguished from a substantially static background part of each videoframe within a video sequence. Each video frame is divided into a number of video blocks each of which comprises one or more pixels. A mask frame is generated in respect of each video f |
| 7424135 |
Security check provision |
September 9, 2008 |
| Security check method and apparatus reduces problems that can arise if the user security data set becomes known by unauthorized persons. To address this problem only part of the user data set is recorded in insecure sections of the system. For example, a security check preventing una |
| 7418736 |
Network security system |
August 26, 2008 |
| Security is provided in a network system. A message is received from a user, which message requires authentication of the user. An authentication message is sent indicating the identity of the user to an initial software security agent. The software security agent, on receipt of the |
| 7418083 |
Telecommunications line parameter estimation |
August 26, 2008 |
| A fault location system for a telecommunications network including a local exchange or switch, a node such as a primary connection point and a plurality of line terminations to the customer includes probability calculation to establish the location of a fault measuring from the excha |
| 7319673 |
Communications network |
January 15, 2008 |
| In a communications network, which may be a federated network such as the Internet, a tariff is distributed via the network to customer terminals. At each terminal a charge for use of the network is calculated by using the tariff. Different tariffs may be communicated for different servi |
| 7233997 |
Data communications |
June 19, 2007 |
| An authentication server (AS) is provided which stores authentication details of authorised users, and a list of currently-authenticated users. A number of application servers (APS) are connected to the authentication server (AS), to allow the application servers (APS) to check the curre |
| 7225132 |
Method for assigning an identification code |
May 29, 2007 |
| An identification code is assigned to a user by making a selection from a closed set of possible tokens. The selection is determined algorithmically by user identity data. The format of the identification code may comprise a sequence of natural language words chosen from closed sets |
| 7222165 |
Service provision support system |
May 22, 2007 |
| A communications service provision support system supports multiple different types of services during a service session. The system when in use comprises a session manager which performs functions generic to each of the multiple different types of services during service sessions. For |
| 7212634 |
Data distribution |
May 1, 2007 |
| In a data distribution system, data is divided into a number of application data units. A sequence of keys is generated systematically, and a different key is used to encrypt each data unit at the source. At the receivers, corresponding keys are generated and used to decrypt the data |
| 7203761 |
Method and apparatus for routing data to/from a mobile user |
April 10, 2007 |
| A home agent, attached to a home network, receives, adapts and forwards messages intended for a mobile node attached to one of a plurality foreign networks. The home agent, having received a message, passes the message on to a processing unit to assess whether the message should be a |
| 7069217 |
Waveform synthesis |
June 27, 2006 |
| A synthesizer is disclosed in which a speech waveform is synthesized by selecting a synthetic starting waveform segment and then generating a sequence of further segments. The further waveform segments are generated based jointly upon the value of the immediately-preceding segment and |
| 7058713 |
Method to assess the quality of a voice communication over packet networks |
June 6, 2006 |
| 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. |
| 6892069 |
Proxy routing |
May 10, 2005 |
| A method of routing messages destined for a mobile node (6) in a communications system, such as the Internet, including sending the messages to a proxy node (18) according to reachability information recording the current reachability of the mobile node (6), as well as user preferenc |
| 6891509 |
Antenna assembly |
May 10, 2005 |
| An assembly of mechanically steerable directional radio antennas, comprising a primary antenna and at least one secondary antenna, arranged such that the or each secondary antenna is capable of being physically steered over a limited azimuthal arc relative to the primary antenna, and |
| 6804337 |
Bill image generation |
October 12, 2004 |
| A method and apparatus for generating a bill image in a computer implemented billing system for a telecommunications network which includes providing a plurality of discounts for a customer retroactively applied to calls made during a billing period in which the discounts apply. The |
| 6801772 |
Cellular mobile telephone network operation |
October 5, 2004 |
| Where a call of one cellular telephone network has a cell of another network as neighbor, a dedicated control channel for a mobile station which is registered with the public network and whose subscriber has access privileges for the private network, carries neighboring cell data for |
| 6765886 |
Call set-up and service invocation in telecommunications networks |
July 20, 2004 |
| A telecommunications network is provided, including a switch configured such that a request from a first network termination to establish a communications link with a second network termination is directed to a service processor which directs the switch to establish the link. This en |
| 6731648 |
Method and apparatus for transmitting a return signal in a loop network |
May 4, 2004 |
| In a communications network, which may be a broadband optical network, a packet is transmitted from a source node to a destination node on a looped signal path. A return signal, which may function as an acknowledgement of the original signal, is transmitted back to the source node from t |
| 6668288 |
Telecommunications data conferencing platform having secure firewall wherein access is restricte |
December 23, 2003 |
| A telecommunications data conferencing platform has a secure zone and a partly secure zone connected by a secure firewall. The secure zone contains a master data server, a billing system a reservation system and an audio bridge connected to the firewall. The partly secure zone contains |
| 6574730 |
User authentication in a communications network |
June 3, 2003 |
| An authentication system of a terminal on a public switched telephone network provides a security node associated with a local exchange and a network terminal. For one-way authentication, the terminal responds to a call initiation by sending a unique authentication code comprising a |
| 6396604 |
Dark pulse TDMA optical network |
May 28, 2002 |
| An optical network includes a number of nodes coupled to an optical transmission medium, such as an optical fiber bus. Each of the nodes includes a dark pulse generator. Different nodes output dark pulses in different time slots onto the transmission medium, forming a dark pulse OTDM |
| 6363467 |
Apparatus and method for allocating memory space for program use and management purposes |
March 26, 2002 |
| In order to reduce problems caused by a user corrupting memory by incorrect use of memory allocation functions in the C programming language, memory allocation requests of an application (32) are monitored by a monitor sub-process (34) during run-time, and invalid memory allocation reque |
| 6339587 |
Network management system |
January 15, 2002 |
| A method of operating a network management system for a telecommunications involves satisfying a request for a connection path having a specified capacity between two specified termination of the network. The network comprises a plurality of connections between network nodes, each co |
| 6334152 |
Information system |
December 25, 2001 |
| An interactive information delivery system server delivering text or other visual data to a display unit is accessed by a user by means of his own telephone, through an interface unit. The interface unit interprets key pad presses and/or voice commands, and in response to these it contro |
| 6334132 |
Method and apparatus for creating a customized summary of text by selection of sub-sections ther |
December 25, 2001 |
| A system for summarizing data sets stores target data items and divides the data set into sections. Each section is compared against the target data items and a ranking value is calculated for each section dependent on the outcome of the comparisons. A summary of the data set is then com |
| 6333988 |
Personal identification |
December 25, 2001 |
| A personal identification apparatus for providing information characteristic of an eye includes a housing with an entrance window through which a user looks at a target object. An image capture device within the housing operates to provide an image signed representing features of the |
| 6292462 |
Multicarrier modulation |
September 18, 2001 |
| Multiple carriers are generated, modulated by data to be transmitted, as shown by oscillators and modulators (or using Fourier transform techniques). They follow two paths. One path via an adder takes a set of carriers at integer multiples of a windowing frequency where the odd carri |
| 6289392 |
Messaging system |
September 11, 2001 |
| A messaging system for passing messages between calling programs and called programs wherein all messages are passed within a defined message block and via a message interface. The message interface has memory for storing, for each called program, an identifier and a program interface. I |
| 6289337 |
Method and system for accessing information using keyword clustering and meta-information |
September 11, 2001 |
| A system for accessing information stored in a distributed information database provides a community of intelligent software agents. Each agent can be built as an extension of a known viewer for a distributed information system such as the Internet WorldWide Web. The agent is effecti |
| 6281877 |
Control interface |
August 28, 2001 |
| A control interface for a data terminal includes a three-dimensional display of an environment which includes a number of objects. Different objects correspond to different data sources. The apparent location of the viewpoint in the environment is changed in response to input from the |
| 6278970 |
Speech transformation using log energy and orthogonal matrix |
August 21, 2001 |
| Calculate the log frame energy value of each of a pre-determined number n of frames of an input speech signal and apply a matrix transform to the n log frame energy values to form a temporal matrix representing the input speech signal. The matrix transform may be a discrete cosine transf |
| 6266805 |
Visualization in a modular software system |
July 24, 2001 |
| A community of collaborative software agents work together in a domain to provide functionality such as providing of communications services or control of a chemical process. A system is provided for building such communities of collaborative software agents. Each software agent has data |
| 6263072 |
Computer telephony integrated network |
July 17, 2001 |
| The invention concerns an integrated computer and telephony system and a method of integrated computer telephony in which at least one main is switch is capable of receiving incoming telephone calls and of dialling outgoing calls. A computer terminal is associated with the switch andmean |
| 6259772 |
Message delivery system with special features |
July 10, 2001 |
| A method of voice message transmission is performed within a telecommunication network. It may include:recording, via a telephone line from a first terminal, a voice message to a designated second terminal; attempting to connect to the second terminal via a telephone line; where the step |
| 6246825 |
Liquid filled optical waveguide |
June 12, 2001 |
| A planar optical waveguide has a liquid filled wave guiding region, which may be straight, coiled or otherwise folded, with filling channels provided transversely along its length. The wave guiding region may be fabricated in a substrate with a reservoir on the substrate to facilitate |
