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| Number | Title | Issue Date |
| 7961626 | Resilient network A network resilient to at least two points of failure comprises a plurality of nodes. A first path between a source node and a destination node is determined and a second path between a source node and a destination node is determined. The first and second paths are... | 06/14/2011 |
| 7936302 | Unwrapping of phase values at array antenna elements A method and apparatus are described for the unwrapping of a set of phase values observed for an incoming signal on a phased array antenna. The difference between values observed on adjacent elements in the array forms a first data set. The differences between adjac... | 05/03/2011 |
| 7933971 | Method for secure communication over a public data network via a terminal that is accessible to multiple users There is described a method of communicating over a public data network, for example the Internet. A user of a public PC, for example one located in an Internet café, uses the Internet browser provided on the public PC to downloaded from a remote trusted web site a... | 04/26/2011 |
| 7928908 | Apparatus and method for determining receiver performance in a multilateration system In a multilateration system receivers are grouped into two groups. The first group is used to determine a position of a signal source, for example, an aircraft equipped with a SAR transponder. From the determined position, predicted time of arrival values are produc... | 04/19/2011 |
| 7848730 | Method of controlling interference from a transmitter in one communication system to a receiver in another communication system A method of controlling interference from a transmitter (4) in one communication system to a receiver (1) in another communication system, the method comprising transmitting a beacon (3) beacon from a beacon transmitter associated with the recei... | 12/07/2010 |
| 7864980 | Video motion anomaly detector The Video Motion Anomaly Detector addresses the problem of automatically detecting events of interest to operators of CCTV systems used in security, transport and other applications, processing CCTV images. The detector may be used in a number of ways, for example t... | 01/04/2011 |
| 7830308 | Apparatus for multilateration and method To cater for the positioning of an aircraft in a boundary zone between two adjacent multilateration systems, the controller (14) in one system receives Time Difference of Arrival data provided by the controller (15) in the second system. The controller... | 11/09/2010 |
| 7826834 | Method for downloading software In a method for downloading software from a mobile network operator to a mobile phone user, the downloaded software can be new network services or user specified applications software or user specified information, written as Java classes capable of running on a Jav... | 11/02/2010 |
| 7821427 | Data processing system and method A method of processing an encoded data stream comprises determining one or more data strings of interest; wherein the data string comprises a predetermined sequence of characters; encoding (3) the or each data string using the same encoding that was used to e... | 10/26/2010 |
| 7769788 | Aho-Corasick methodology for string searching In a method of constructing an Aho-Corasick tree, tree is constructed in a general depth first manner, one string at a time. Preferably during the construction of the string, after each node is added, failure links or extended failure links from that node to other n... | 08/03/2010 |
| 7756055 | Method of transmission A method of transmission comprises receiving at a first destination, a transmission from a first source; determining from the transmission from the first source, the maximum permitted additional interference subject to which the first destination can still communica... | 07/13/2010 |
| 7702915 | Access authentication system To gain visiting access to a wireless local area network (W-LAN), the operator of which administers a visitor authentication, authorization and accounting (VAAA) server, a user requesting such access must have a valid cellular mobile account, a portable computing de... | 04/20/2010 |
| 7623795 | Data compression apparatus and method therefor Routers for trunk telecommunication systems currently operate at 2.5 Gb/s. Next generation routers will be required to switch 128 input data streams into 128 output data streams, each data stream being at a data rate of 10 Gb/s. Current routers employ massively para... | 11/24/2009 |
| 7576689 | Method and apparatus for controlling a frequency source A method is provided for controlling a clock for use in a frequency source. In the method a time bias is determined by determining the Accumulated Doppler Range of a signal source at different time intervals. The drift of a local clock is determined by determining t... | 08/18/2009 |
| 7568630 | RF tag and RF tagging system An RFID tag includes a plastic container having at least one particle that is disposed therein and that is formed from metal or metal coated and/or fabricated from a plurality of different metals. A receiver unit detects RF pulses which are generated by the Triboele... | 08/04/2009 |
| 7557754 | Method for use in a multilateration system and a multilateration system Groupings of receivers for determining a target location by a multilateration system are selected to give the best geometric dilution of precision result by eliminating the receiver that makes the greatest contribution to such dilution. In this way the groups to be ... | 07/07/2009 |
| 7190332 | Acoustically activated marketing device An acoustically activated marketing for displaying predefined information in response to predefined data being received. The device is obtained from a retailer and worn as a badge while at the cinema or while listening to the radio or TV. When a specific advertiseme... | 03/13/2007 |
| 7529483 | Communication systems A communication system for the mutual interconnection of a plurality of lower traffic level (5 Terabit) switch nodes via a relatively higher traffic level (Petabit) connection bus, which system comprises in operative association with each node, a two part TDM optica... | 05/05/2009 |
| 7489637 | Method of enhancing the efficiency of data flow in communication systems A method of improving the flow of data in a communication system having at least two links, comprising inserting into one of said links at least one enhancer, the operation of which is to a) communicate with a the unit upstream of the data flow such that the upstrea... | 02/10/2009 |
| 7372332 | Optimizing power consumption in amplifiers The present invention provides methods and apparatus for optimising power consumption in transistor amplifiers. The method comprises the step of adapting the amplifier characteristics of the transistor by adapting the bias impedance at the base of the transistor. Th... | 05/13/2008 |
| 7315513 | Method for controlling data flow rate in an internet connection Described herein is a method of controlling data flow between a local network (120) and a remote network (30) via a geostationary satellite link (40, 46, 48). The local network (120) comprises a sending host (22) and a connection s... | 01/01/2008 |
| 7304605 | Method of calibrating an adaptive antenna array of a satellite navigation system A method of calibrating an adaptive antenna array that applies beamsteering (1) of a satellite navigation system comprises receiving signals from a plurality of satellites at a plurality of receivers (2) within the system. The satellite direction relat... | 12/04/2007 |
| 7295228 | Security camera systems A security camera system is provided. Several video cameras operate in conjunction with an image display monitor, a user control and camera selector means whereby a target of interest may be followed. Each two cameras providing adjacent areas of coverage are operabl... | 11/13/2007 |
| 7292563 | Method of associating a training code to a channelisation code in a mobile telecommunication system A method of associating the Training code to a Channelisation code in a mobile telecommunications system. The method includes associating a Training code with a Channelisation code prior to transmission according to a set of rules such that upon detection of the Tra... | 11/06/2007 |
| 7288992 | Bias circuit for a bipolar transistor The bias circuit of the present invention can be configured for extremely stiff biasing for Class A circuits, which is solid under heavy RF input overdrive. Alternatively, the circuit may be configured for controlled self biasing for use in Class AB designs. ... | 10/30/2007 |
| 7268619 | Amplifier pre-distorter method and apparatus An amplifier pre-distorter method and apparatus squares an input signal and splits the signal into inphase and quadrature parts which are processed to generate a polynominal predistortion signal. This simplifies the apparatus and enables implementation in an applica... | 09/11/2007 |
| 7250849 | Detection of undesired objects on surfaces A device for detection of undesired objects on surfaces, for example airport runways co-ordinates sensed data from a plurality of sensor units. With radar sensors, synthetic aperture radar processing is found to be advantageous. A vehicle which is configured with a ... | 07/31/2007 |
| 7212154 | Apparatus for producing an amplified radio frequency pulse Apparatus for producing an amplified Radio Frequency pulse includes a controller for monitoring the output amplified pulse and determining therefrom a correction for a deviation in the characteristics. The correction is applied by a phase shifter or amplitude contro... | 05/01/2007 |
| 7203736 | Fully integrated web activated control and monitoring device A web-enabled microcontroller device is provided with both web server functions (310) and generic control and monitoring functions (312). The web-enabled microcontroller device may be embedded in domestic, commercial and industrial hardware. Integrated... | 04/10/2007 |
| 7173753 | Optical data receiver systems An optical data receiver for the distribution and demodulation of compressed TDM data packages comprises, optical distributor means to which the data packages are applied for selective distribution to a plurality of AWG optical demultiplexer/detector arrays, so that... | 02/06/2007 |
| 7155240 | Method of determining the position of a target using transmitters of opportunity A method of determining the position of a target comprising the steps of: providing a transmitter or a plurality of transmitters to transmit a signal to the target, providing a receiver or a plurality of receivers to receive signals reflected from said target. Deter... | 12/26/2006 |
| 7142154 | Time and frequency synchronizations of equipment at different locations Method and apparatus for providing accurately synchronized timing signals at mutually distant locations employs a GPS or similar receiver at each location. These receivers are interconnected by a communications network, and exchange data over the network to agree a ... | 11/28/2006 |
| 7138947 | Antenna A dual polarised antenna 1 has two types of antenna elements combined. Each type of antenna element is formed on a planar substrate. The substrates are furnished with inter-engaging slots to enable assembly of the elements. Signal feeds are connected to the a... | 11/21/2006 |
| 7139253 | Packet switches A router device has a plurality of ingress line interface cards (LICs), a plurality of egress LIC's, a backplane and a controller. Transmission of signals from the ingress LICs to the controller, and from the controller to each of the ingress and egress LICs takes p... | 11/21/2006 |
| 7123611 | Packet switching In a method for cell level scheduling for handling multicast traffic in routing devices, such as cross-bar switches having, a plurality of ingress line interface cards (LICs), a plurality of egress LICs, a cross-bar and a controller, multicast and unicast data traff... | 10/17/2006 |
| 7110781 | Mobile telecommunications systems Described herein is a method of providing synchronization between a plurality of base stations (300) in a telecommunications system which comprises providing a random access channel in each cell (320). A local base station (300) uses the random ... | 09/19/2006 |
| 7088300 | Vivaldi antenna A directional, wideband, planar antenna arrangement is a class of Vivaldi aerial constructed as a plurality of conductive layers disposed on at least one substrate layer. The conductive layers are arranged to form a flared notch, which widens from a closed end to an... | 08/08/2006 |
| 7071853 | Method of compressing data packets A method of compressing data, wherein said data is in the form of discrete units, by determining an overall code specific to the units, comprising the steps of: a) grouping the units in terms of a common behavior pattern; b) for each said group of unit... | 07/04/2006 |
| 7064489 | Huffman data compression method A method of compressing a character by determining an overall code specific to the character comprising the steps of: a) grouping the characters in terms of a common behaviour pattern; b) where the number of characters within that group is odd, creatin... | 06/20/2006 |
