Lewin, GB
Andrew Lewin, Malvern GB
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20110149363 | Lidar Mean Power Reduction - A laser radar device adapted to ensure that the output from the laser is eye-safe. A means for applying spatial dither to the output of the laser source, such as a moveable optical arrangement. This causes the point of focus of the transmitted beam to traverse a target area by small amounts, reducing the overall radiation exposure at any particular point of focus, but having negligible impact on wind speed measurement for example. Alternative arrangements for ensuring eye-safety include periodically reducing the laser power density, gating the output or altering the focussing of the transmitted beam. | 06-23-2011 |
Andrew C. Lewin, Malvern GB
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20080258946 | Pattern Matching Apparatus - This invention relates to a pattern recognition correlator implemented entirely in the electronic domain. The correlator has a serial to parallel conversion means to convert input serial binary data into at least one input parallel binary electrical signal and a comparator to compare the or each input parallel data signal with a reference parallel binary data signal. The serial to parallel conversion means may comprises a demultiplexer to effectively slow the data update rate and a series of latch circuits to provide the parallel data signal. The comparator may be arranged to perform bit addition and may be arranged such that a zero total sum is an indication of correlation. The bit addition may be performed b an array of logic gates. | 10-23-2008 |
20090034969 | CORRELATION APPARATUS - This invention relates to a pattern recognition correlator in which a serial input data signal is converted into a parallel data signal for correlation with one or more reference data signals. The invention relates to use of a demultiplexer in such a correlation apparatus to reduce the data update rate for the subsequent components. The invention also relates to the use of a series of latch circuits to provide serial to parallel conversion of the input data signal in the electrical domain. | 02-05-2009 |
20110261369 | Surface shape measurement apparatus and method - Apparatus for indicating the departure of a shape of an object ( | 10-27-2011 |
Andrew Charles Lewin, Worcestershire GB
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20080247764 | Method and System For Synchronising an Optical Transmitter With an Optical Modulator - A method of synchronising an optical transmitter and modulator comprising transmitting a calibration sequence of pulses from the transmitter to the modulator; varying a control timing drawn from the set comprising the transmit interval timings and the modulator transmission interval timings; monitoring the resulting pulses transmitted by the modulator and selecting a preferred control timing; controlling the optical transmitter and/or modulator responsive to the selected control timing. Corresponding apparatus, systems, signals and programs for computers to implement or control the arrangement are also provided. | 10-09-2008 |
20080260380 | Method of Providing Duplex Optical Communications and Optical Modulator Therefor - Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting—received TSK pulses so as to transmit an on-off keying (OOK) signal. Related apparatus and signals are also provided. | 10-23-2008 |
20080266553 | Optical Angle Detection - Apparatus and methods for detecting angle of incidence of an optical beam. The apparatus employs two optical detectors, the first of which has placed in front of it a coating or layer which exhibits an angle-dependent optical transmission characteristic distinct from that of the light path in front of the second detector. The difference in a characteristic of the light received at the respective detectors therefore provides an indication of the angle of incidence of the light beam. The angle detector may be used particularly, though not exclusively, in conjunction with free space optical communications systems. | 10-30-2008 |
20100040380 | OPTICAL CORRELATION APPARATUS - An optical correlation apparatus is described which forms first and second parallel optical signals in response to a serial input data stream. The first parallel optical signal is arranged to have bright pulses represent binary 1 and the second parallel optical signal is arranged to have bright pulses represent binary 0. A channel select means, such as an optical switch or amplitude modulators deselects or blocks channels in the first parallel optical signal which correspond to binary 1 in a reference data string and also deselects or blocks channels in the second parallel optical signal which correspond to binary 0 in the reference data string. The remaining optical signals are combined at one or more detectors. Where the input data matches the reference data string each bright pulse in the first and second parallel optical signals is deselected and the detector registers zero intensity. However when there is any mismatch at least one channel will pass a bright pulse to the detector. An instance of zero intensity can therefore be used as an indication of pattern match. | 02-18-2010 |
20100265491 | RANGE-FINDING METHOD AND APPARATUS - Range-finding apparatus comprises a source of pulsed radiation of variable repetition rate and a beam-splitter for dividing the pulsed radiation into two portions which are directed respectively to a local retro-reflector and to a retro-reflector co-located with a remote target the range of which is to be determined. The source, beam-splitter and retro-reflectors are arranged in the form of Michelson interferometer together with a detector. The repetition rate of the source is tuned to frequencies f such that round-trip distance to the remote target is mc/f where m is an integer, this condition being detected by observing a heterodyne signal at the detector. Two such frequencies enable range to be determined. The precision with which range is determined may be increased by carrying out interferometry using the two portions. The accuracy of the method does not depend on absolute range (as with triangulation) and is not limited by the speed of timing electronics, as is the case for time-of-flight techniques. | 10-21-2010 |
Andrew Charles Lewin, Malvern GB
Barry Lewin, Merseyside GB
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20160001104 | Combined Exhale and Inlet Valve for Respirator - A valve assembly including a mask end and a supply end is provided. The valve assembly includes a housing assembly, an inhale valve, and an exhale valve. The housing assembly defines a first air passageway configured for inhalation and a second air passageway configured for exhalation. At least a portion of the second air passageway is disposed peripherally around the first air passageway. The inhale valve is configured to be biased to an open position when subject to a reduction in pressure due to inhalation, and to be biased to a closed position when subject to an increase in pressure proximate due to exhalation. The exhale valve is configured to be biased to a closed position when subject to a reduction in pressure due to inhalation, and to be biased to an open position when subject to an increase in pressure due to exhalation. | 01-07-2016 |
Barry Lewin, Lancashire GB
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20110048421 | CARRYING SYSTEM FOR BREATHING APPARATUS - A carrying system is provided for use with breathing apparatus. The carrying system includes a backplate and a plurality of straps adapted to hold the backplate on the back of a user when the carrying system is worn. The backplate includes at least one plate of a plastics material. The at least one plate having a predetermined shape and the at least one plate being adapted to provide impact protection to a user during use by at least partially absorbing and/or dispersing impact forces, and to deform resiliency in response to external forces imposed by bending and/or twisting of a user during use and return substantially to its predetermined shape when not subjected to an external force. | 03-03-2011 |
Mike Lewin, London GB
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20150379413 | CRIME RISK FORECASTING - A computer-based crime risk forecasting system and corresponding method are provided for generating crime risk forecasts and conveying the forecasts to a user. With the conveyed forecasts, the user can more effectively gauge both the level of increased crime threat and its potential duration. The user can then leverage the information conveyed by the forecasts to take a more proactive approach to law enforcement in the affected areas during the period of increased crime threat. | 12-31-2015 |
Richard Lewin, Ulverston GB
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20150093921 | Connector Unit - A connector unit for connecting at least two cables includes a male part, a female part, and a shuttle piston. The shuttle piston includes at least one magnetic connecting device for establishing a magnetic connection between the shuttle piston, and at least one magnetic connecting aid of the male part and at least one latching structure for establishing a force-fitting connection between the shuttle piston and the female part. The male part includes the magnetic connecting aid for interaction with the magnetic connecting device of the shuttle piston for establishing the magnetic connection between the shuttle piston and the male part, and an interaction area for interaction in a force-fitting manner with at least one backing latch of the female part. The female part includes the backing latch for establishing the force-fitting connection and for interacting at least with the interaction area of the male part in a force-fitting manner. | 04-02-2015 |
20150093931 | Connector Unit - A connector unit for connecting at least two cables includes at least a male part, a female part, and a shuttle piston. The shuttle piston includes an opening configured for receiving at least a section of the male part, at least one latching device, and at least one latching structure. The male part includes the section configured for insertion into the opening of the shuttle pin, at least one latching aid, and an interaction area configured for a force-fitting interaction with at least one backing latch of the female part. The female part includes the at least one backing latch. | 04-02-2015 |
Robert Lewin, Derby GB
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20090263614 | Resin transfer moulding process for an article containing a protective member - A resin transfer moulding process for an article incorporating a protective insert of polymer material such as polyether ether ketone (PEEK). A piece of PEEK material is cut and thermoformed to the required shape and then placed in position in a mould. A bead of elastomer material is formed around the edge of the insert to seal it against an internal wall of the mould in order to prevent resin tracking between the mould and insert faces during subsequent injection into the mould. | 10-22-2009 |
Thomas I. Lewin, Hampshire GB
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20140025840 | NETWORK ANALYSIS IN A FILE TRANSFER SYSTEM - Aspects of the invention are directed to a method and system for discovering business content transfer paths in a network using file transfer information, and for calculating business risk per network component in a network. A method according to an embodiment includes: obtaining file transfer information for a plurality of file transfers between a plurality of nodes within a network; generating a confidence of correlation for each pair of file transfers in the plurality of file transfers; determining interdependencies between the plurality of file transfers based on the confidence of correlation for each pair of file transfers; and determining a business content transfer path based on the interdependencies between the plurality of file transfers. | 01-23-2014 |