Luff
Bradley Jonathan Luff, San Marino, CA US
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20090123149 | End-user optical transceiver unit with transmit signal attentuation - A transceiver unit for use at an end-location in a communications network includes a downstream monitor configured to monitor downstream optical signals that travel from a service provider to the end-location. The downstream optical signals carry downstream data for use by a device in communication with the transceiver unit. At least a portion of the optical path traveled by the downstream optical signals is on a common optical fiber that carries downstream optical signals for other end locations. The transceiver unit also includes an upstream attenuator configured to attenuate upstream optical signals traveling from the end-location to the service provider. At least a portion of the optical path traveled by the upstream optical signals is on the common optical fiber. The transceiver unit also includes electronics configured to operate the upstream optical attenuator in response to output from the downstream monitor. | 05-14-2009 |
20090129720 | Efficient transfer of light signals between optical devices - An optical device includes a waveguide immobilized on a base. The device includes a port configured to receive light signals from the waveguide such that the light signals travel through the port. The light signals enter the port traveling in a first direction. The port is configured to change the direction of the light signals from the first direction to a second direction that is toward a location above the device or below the device. The device also includes a wedge configured to receive the light signals from the port such that the light signals travel through the wedge and then exit the wedge traveling in a direction that is at an angle in a range of 88° to 92° relative to the device and that is toward a location above or below the device. | 05-21-2009 |
20130209033 | Coupling between optical devices - A base device has a first waveguide positioned on a first base. The waveguide is at least partially defined by a ridge extending away from the first base. An auxiliary optical device has a second waveguide positioned on a second base. The second optical device is immobilized on the base device such that the second waveguide is between the first base of the first optical device and the second base of the auxiliary device. The first waveguide is optically aligned with the second waveguide such that the first waveguide and second waveguides can exchange optical signals. | 08-15-2013 |
20130294472 | Integration of laser into optical platform - An optical device includes a laser or amplifier positioned on a base. The laser includes a ridge of a gain medium positioned on the base such that the base extends out from under the ridge. The ridge includes a top that connects lateral sides of the ridge. Electronics are configured to drive an electrical current through the ridge such that the electrical current passes through one or more of the lateral sides of the ridge. | 11-07-2013 |
Edwin F. Luff, Sherborn, MA US
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20100318314 | Polymorphic automatic test systems and methods - An Analog/mixed signal automatic test system includes a software architecture that creates a virtual composite instruments through novel software dynamic allocation of low level resources. These virtual composite instruments provide backwards and forwards compatibility to a variety of automatic test equipment, known or available on the market. The virtual composite instruments are free from the normal constraints imposed by hardware implementations. Creation of the virtual composite instruments allows a single piece of automatic test equipment system to emulate many implementations of automatic test equipment, providing higher utilization, and therefore a lower cost test solution for device manufacturers. The test instruments are preferably object controls and are preferably instantiated and controlled by the test system server. This allows multiple users to control the tester simultaneously across, for example, the Internet. | 12-16-2010 |
Gwilym Luff, Cambridge GB
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20140103979 | METHOD AND SYSTEM FOR COMPENSATING MODE CONVERSION OVER A COMMUNICATIONS CHANNEL - A circuit can compensate for intra pair skew or mode conversion in a channel by applying a second or corrective mode conversion effect that counters the channel's mode conversion. The circuit can process the common mode signal with a frequency dependent filter prior to injection back into the differential mode. The circuit can implement the reverse mode conversion with passive circuits using integrated resistors and metal oxide semiconductor (MOS) switches. In certain embodiments, such actions can proceed effectively without necessarily consuming active power. | 04-17-2014 |
20150061632 | SYSTEM AND METHOD OF EQUIVALENT SERIES INDUCTANCE CANCELLATION - An equivalent series inductance (ESL) cancel circuit for a regulator for adjusting a feedback voltage by attenuating a magnitude of a square wave ripple voltage developed on an output voltage. The regulator includes an output inductor and an output capacitor, in which the capacitor has an ESL which forms an inductive voltage divider with the output inductor causing the square wave voltage ripple. The ESL cancel circuit may include first and second current sources and a resistor device coupled between the output node and an adjust node which is further coupled to a feedback input of the regulator. The first current source applies a current proportional to the output voltage to the adjust node. The second current source selectively applies a current proportional to the input voltage of the regulator based on a state of the pulse control signal. | 03-05-2015 |
Gwilym Luff, Cambridge UK
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20140111703 | SYSTEMS AND METHODS FOR CONTROLLING SCANNING MIRRORS FOR A DISPLAY DEVICE - Certain embodiments described herein relate to a scanning controller configured produce a horizontal (H) and vertical (V) scanning control signal that is used to control a bi-axial scanning mirror of a scanning laser projector device, a system including such a scanning controller, and a method for generating such an H and V scanning control signal. In an embodiment, the H and V scanning control signal includes H scanning frequency content that is used to control a H scanning frequency of the bi-axial scanning mirror, and V scanning frequency content that is used to control a V scanning frequency of the bi-axial scanning mirror. To avoid cross talk, the scanning controller is configured to produce the H and V scanning control signal such that the H scanning frequency content has a null at DC, and the V scanning frequency content has a null at the H scanning frequency. | 04-24-2014 |
Gwilym Luff, Great Shelford GB
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20130154704 | Method and System for Compensating Mode Conversion Over a Communications Channel - A circuit can compensate for intra pair skew or mode conversion in a channel by applying a second or corrective mode conversion effect that counters the channel's mode conversion. The circuit can process the common mode signal with a frequency dependent filter prior to injection back into the differential mode. The circuit can implement the reverse mode conversion with passive circuits using integrated resistors and metal oxide semiconductor (MOS) switches. In certain embodiments, such actions can proceed effectively without necessarily consuming active power. | 06-20-2013 |
Gwilym Francis Luff, Cambridge GB
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20120119833 | CLASS AB OUTPUT STAGES AND AMPLIFIERS INCLUDING CLASS AB OUTPUT STAGES - A buffer stage includes a flipped voltage follower and an emitter follower. The flipped voltage follower is connected between a high voltage rail and a low voltage rail and includes an input and an output. The emitter follower is also connected between the high voltage rail and the low voltage rail and includes an input and an output. A resistor connects the output of the flipped voltage follower to the output of the emitter follower. The input of the flipped voltage follower and the input of the emitter follower are connected together and provide an input of the buffer stage. The output of the emitter follower provides an output of the buffer stage. A differential buffer stage can be implemented using a pair of such buffer stages. Such a differential buffer stage can provide the output stage for a fully differential operational amplifier. | 05-17-2012 |
Gwilym Francis Luff, Great Shelford GB
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20090309653 | CHOPPER STABILIZED AMPLIFIER - A chopper stabilized amplifier has differential inputs, an output, and a low frequency path and a high frequency path from the differential inputs to the output. Chopping occurs, at a chopping frequency, of a differential signal at differential inputs and outputs of an amplifier stage of the low frequency path to thereby produce a chopped differential signal that has a DC offset of the amplifier stage frequency shifted up to the chopping frequency. A continuous time filter embedded between a pair of further amplifier stages of the low frequency path is used to attenuate chopper frequency ripple resulting from the chopping at the chopping frequency. Additionally, a buffer is used to allow feedback through a compensation capacitor for the low frequency path, yet prevent chopper frequency ripple from feeding forward through the compensation capacitor to the output of the amplifier. | 12-17-2009 |
20110304393 | CLASS AB OUTPUT STAGES AND AMPLIFIERS INCLUDING CLASS AB OUTPUT STAGES - A buffer stage includes a flipped voltage follower and an emitter follower. The flipped voltage follower is connected between a high voltage rail and a low voltage rail and include an input and an output. The emitter follower is also connected between the high voltage rail and the low voltage rail and includes an input and an output. A resistor connects the output of the flipped voltage follower to the output of the emitter follower. The input of the flipped voltage follower and the input of the emitter follower are connected together and provide an input of the buffer stage. The output of the emitter follower provides an output of the buffer stage. A differential buffer stage can be implemented using a pair of such buffer stages. Such a differential buffer stage can provide the output stage for a fully differential operational amplifier. | 12-15-2011 |
Kelvan R. Luff, Kimberly, ID US
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20130065931 | METHODS FOR REDUCING WIREWORM DAMAGE TO CROPS - Methods and compositions for controlling pests of the order Coleoptera are described herein. Methods of reducing wireworm damage in potatoes by applying a compound or composition disclosed herein in a foliar treatment is also described. | 03-14-2013 |
Kenneth Wayne Luff, Walworth, NY US
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20120106992 | METHOD TO AUTOMATE A TRANSFER ASSIST BLADE DEVICE TIMING ADJUSTMENT - When calibrating a transfer assist blade (TAB) in a printer, toner patches are formed on a photoreceptor belt in the printer at locations between sheets of paper. The TAB is partially deployed between paper sheets to pick up toner, and then deployed normally or with a delay to mark the back sides of the sheets. A processor evaluates distances between TAB touchdown and liftoff points and leading and trailing edges of the sheets, and calibrates the TAB to optimize the TAB timing. Additionally, test prints can be generated, each having slightly varied TAB calibration settings that are stored in a non-volatile memory (NVM) table. A user enters an identification number for a test print with the best calibration settings. The processor looks up calibration settings corresponding to the entered identification number and moves NVM settings from the table into operational locations in the system NVM to calibrate the printer. | 05-03-2012 |
Michael Gordon Luff, Killamey Road CA
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20150113007 | DYNAMIC QUERY RESPONSE WITH METADATA - Metadata and for posts originating from different social media sources and the posts themselves may be collected. A query specifying search criteria for the posts and filter criteria related to the metadata may be submitted to the system disclosed herein. The system may allow a client or tenant of the system to filter and search the metadata stored therein. The system may provide the posts in response to the query and permit a client or tenant to rapidly switch between social media sources and corresponding metadata types. | 04-23-2015 |
Richard Luff, Surrey GB
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20140063493 | SENSOR ARRAY - An arrangement for monitoring a submarine reservoir comprises a number of sensor units located in an array ( | 03-06-2014 |
Richard Edward Luff, Guildford GB
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20120134752 | DEPLOYING SENSOR ARRAYS - There is described an apparatus and method for deploying a sensor array comprising a plurality of sensors ( | 05-31-2012 |
Richard Edward Luff, Godalming GB
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20130070565 | SEABED INSTALLATIONS - There is described a method and apparatus for deploying and covering undersea seismic sensing cables to improve seismic coupling between the sensors of the cable and the seabed. The method comprises simultaneously deploying a submarine seismic cable and a mat in order to cover at least the sensor units of the cable. The mat may be attached to the cable prior to laying the cable on the seabed, and is preferably simultaneously laid with the cable by unwinding the cable and mat from a drum. The mat may be continuous, or may be in discrete sections attached to the cable at spaced locations. The mat or mat sections may comprise a sediment-trapping formation such as a number of upstanding fronds on their upper surfaces | 03-21-2013 |
Robert Luff, Wittman, MD US
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20120219156 | METHODS AND APPARATUS TO MONITOR MEDIA EXPOSURE - Methods and apparatus to monitor media exposure are disclosed. An example implementation includes transmitting a start signal from a mailable meter to at least one mailable meter to at least one wearable meter; receiving a first audio at the mailable meter upon transmission of the start signal; receiving a second audio at the at least one wearable meter upon reception of the start signal; deriving a signature of the first received audio at the mailable meter; deriving a signature of the second received audio at the at least one wearable meter; transmitting the signature of the second received audio and an identification number from the at least one wearable meter to the mailable meter; and storing the signature of the first received audio and the identification number at the mailable meter as audience measurement data if the signature of the first received audio and the signature of the second received audio correlate. | 08-30-2012 |
20130232514 | METHODS AND APPARATUS TO COUNT PERSONS IN A MONITORED ENVIRONMENT - Methods and apparatus to count persons in a monitored environment are disclosed. An example apparatus to count the number of people in a monitored environment is described, which includes an image sensor to collect a plurality of pixels, a pseudorandom number generator to pseudorandomly select at least one of a row of the pixels or a column of the pixels, a reader to read first pixel data generated by first pixels of the image sensor at a first time, the first pixels located in at least one of the row of the pixels or the column of the pixels, a comparator to compare the first pixel data with second pixel data generated by the first pixels at a second time different than the first time to generate first change values, and a counter to generate a count of persons based on the first change values. | 09-05-2013 |
Robert Luff, New York, NY US
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20100151816 | METHODS AND APPARATUS FOR ASSOCIATING MEDIA DEVICES WITH A DEMOGRAPHIC COMPOSITION OF A GEOGRAPHIC AREA - Example methods and apparatus for associating media devices with a demographic composition of a geographic area are disclosed. A disclosed example method includes receiving a plurality of Internet Protocol addresses assigned to a media device associated with a panel member, determining a most used Internet Protocol address from the plurality of Internet Protocol addresses, accessing geographic information and determining a geographic location corresponding to the most used Internet Protocol address, accessing demographic information and determining a demographic profile associated with the geographic location, and associating at least one of the geographic location or the demographic profile with the media device. | 06-17-2010 |
20110066437 | METHODS AND APPARATUS TO MONITOR MEDIA EXPOSURE USING CONTENT-AWARE WATERMARKS - Methods and apparatus to construct and transmit content-aware watermarks are disclosed herein. An example method of creating a content-aware watermark includes selecting at least one word associated with a media composition; representing the word with at least one phonetic notation; obtaining a proxy code for each phonetic notation; and locating the proxy code in the content-aware watermark. | 03-17-2011 |
Robert A. Luff, New York, NY US
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20090201132 | METHODS AND APPARATUS FOR METERING PRINTED MEDIA - Methods and apparatus for metering printed media are disclosed. A disclosed example apparatus comprises a first radio frequency identification (RFID) tag to adhere to a first leaflet of a printed media at a first location; a second RFID tag to adhere to a second leaflet of the printed media at a second location of the second leaflet, the first and second locations being substantially a same location; and a first RFID absorber to adhere to a third leaflet of the printed media such that, when the printed media is positioned to expose the first and the third leaflets, the second RFID tag is inactive, and such that, when the printed media is positioned to expose the second and the third leaflets, the first RFID tag is inactive. | 08-13-2009 |
20120179477 | METHODS, APPARATUS, AND COMPUTER READABLE STORAGE MEDIA TO ASSOCIATE AN ACTIVITY WITH RESOURCE CONSUMPTION - Methods, apparatus, and computer readable storage media to associate an activity with resource consumption are disclosed. An example method includes instructing a first meter associated with a first household appliance to measure first energy consumption information in response to a consumption indicator from a second meter associated with a second household appliance, associating the first energy consumption information from the first meter with an activity, and associating second consumption information from the second meter with the activity. | 07-12-2012 |
20130163658 | VARIABLE ENCODING AND DETECTION APPARATUS AND METHODS - Apparatus, methods, and articles of manufacture for media monitoring are disclosed. In particular, the example apparatus, methods, and articles of manufacture determine a media source type associated with a media signal and select an encoding or decoding mode based on the media source type. An encoding operation encodes the media signal using the selected encoding mode and a decoding operation decodes the media signal using the selected decoding mode. | 06-27-2013 |
20140104435 | VARIABLE ENCODING AND DETECTION APPARATUS AND METHODS - Apparatus, methods, and articles of manufacture for media monitoring are disclosed. In particular, the example apparatus, methods, and articles of manufacture determine a media source type associated with a media signal and select an encoding or decoding mode based on the media source type. An encoding operation encodes the media signal using the selected encoding mode and a decoding operation decodes the media signal using the selected decoding mode. | 04-17-2014 |
20140115616 | METHODS AND APPARATUS FOR USING AUDIENCE MEMBER BEHAVIOR INFORMATION TO DETERMINE COMPLIANCE WITH AUDIENCE MEASUREMENT SYSTEM USAGE REQUIREMENTS - Example methods, apparatus, and articles of manufacture determine compliance with usage guidelines of an audience measurement system. Initially, location information associated with an audience member is obtained. It is then determined whether the audience member is in compliance with the usage guidelines based on the location information. Media monitoring information corresponding to the location information is then tagged as non-compliant if the audience member is not in compliance with the usage guidelines. | 04-24-2014 |
20140115617 | METHODS AND APPARATUS FOR USING AUDIENCE MEMBER BEHAVIOR INFORMATION TO DETERMINE COMPLIANCE WITH AUDIENCE MEASUREMENT SYSTEM USAGE REQUIREMENTS - Example methods, apparatus, and articles of manufacture determine compliance with usage guidelines of an audience measurement system. Initially, location information associated with an audience member is obtained. It is then determined whether the audience member is in compliance with the usage guidelines based on the location information. Media monitoring information corresponding to the location information is then tagged as non-compliant if the audience member is not in compliance with the usage guidelines. | 04-24-2014 |