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99results about How to "Reduce and eliminate interference" patented technology
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Intra-and/or inter-system interference reducing systems and methods for satellite communications systems
ActiveUS20050037749A1Reduce distractionsReducing and minimizing potential interferenceActive radio relay systemsRadio/inductive link selection arrangementsSpot beamTelecommunications
Owner:ATC TECH LLC
Apparatus and method to improve WLAN performance in a dual WLAN modality environment
InactiveUS20100029325A1InterferenceReduce and eliminate interferenceNetwork topologiesSubstation equipmentDiagnostic Radiology ModalityWireless transceiver
A portable communication device including a first wireless transceiver operable under a first communication protocol for transmitting and receiving signals and a second wireless transceiver operable under a second communication protocol for transmitting and receiving signals and a method for controlling transmission of signals from an access point to the first wireless transceiver by limiting transmission of information from the associated access point to the first wireless transceiver to time slots or sub-frames associated with the second wireless transceiver in which the second wireless transceiver does not transmit.
Owner:SONY ERICSSON MOBILE COMM AB
Beacon signaling in a wireless system
InactiveUS6985498B2Improve and optimize system performanceImprove throughputPower managementFrequency diversityEngineeringData transmission
A few high power tones used for synchronization and / or other purposes are transmitted in a FDM system during a period of time, e.g., a symbol transmission time period. During normal data transmission symbol periods signals are transmitted using at least 10 tones, e.g., per symbol time. Less than 5 high power signals are transmitted in a symbol time with at least 80% the maximum total transmitter power transmitted being allocated to the high power signals where the maximum total transmitter power is determined from a period of time which may includes one or more data and / or high power tone transmission periods. When the high power tones are transmitted at most 20% of transmitter power is available for transmitting other tones with the power normally being distributed among multiple tones. Normally some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.
Owner:QUALCOMM INC
Intra- and/or inter-system interference reducing systems and methods for satellite communications systems
ActiveUS7340213B2Reduce distractionsImprove signal-to-interferenceActive radio relay systemsWireless commuication servicesTelecommunicationsRadio signal
A first radio signal is received via a first satellite reception path, for example, an antenna or spot beam, which serves a satellite cell. The received first radio signal includes a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell. A second radio signal is received via a second satellite reception path, for example, via another antenna or spot beam of the system and / or via a satellite antenna beam of another system. The second radio signal includes a measure of the interfering signal. The first and second radio signals are processed to recover the desired satellite uplink signal.
Owner:ATC TECH LLC
Multiple access wireless communications system using a multisector configuration
InactiveUS7388845B2Improve and optimize system performanceImprove throughputPower managementEnergy efficient ICTCommunications systemComputer terminal
Power control methods and apparatus for use in a sectorized cell of an OFDM communications system are described. Each sector of a cell uses the same frequencies and transmission times and is synchronized with the other sectors in the cell in terms of tone frequencies used at any given time and symbol transmission times. Tones are allocated to channels in each cell in the same manner so that each channel in a sector has a corresponding channel in another sector. Power differences between channels in different sectors are maintained to be within a pre-selected power difference. Different channels in a cell are assigned different power levels. Wireless terminals are assigned to channels based on channel feedback information. Wireless terminals with poor channel conditions are allocated to higher power channels than wireless terminals with good channel conditions. Lower power channels often include more tones per symbol time than high power channels.
Owner:QUALCOMM INC
Water jet reversing propulsion and directional controls for automated swimming pool cleaners
InactiveUS7165284B2Easy to cleanReduce and eliminate interferenceGymnasiumCleaning using gasesMarine engineeringMechanical sensor
A pool or tank cleaner that is propelled by means of one or more water jets is directed in one or more predetermined systematic scanning patterns of either straight, curvilinear, or combinations of both, by an apparatus and method that controls and varies the directional discharge of one or more water jets that propel the cleaner in its translational movement. The direction of the discharge of the propelling water jet is changed by mechanical sensors, electrical sensors, or by interrupting the water pump. Further variations in the direction of translational movement of the cleaner are effected by activating at least one retractable depending member to periodically contact the pool surface below the moving cleaner, thereby causing the cleaner to pivot or otherwise change direction.
Owner:AQUA PRODS
Packet Loss Concealment Based On Forced Waveform Alignment After Packet Loss
ActiveUS20080046235A1Reduce and eliminate destructive interferenceReduce and eliminate interferenceSpeech analysisPacket loss concealmentSpeech sound
A packet loss concealment method and system is described that attempts to reduce or eliminate destructive interference that can occur when an extrapolated waveform representing a lost segment of a speech or audio signal is merged with a good segment after a packet loss. This is achieved by guiding a waveform extrapolation that is performed to replace the bad segment using a waveform available in the first good segment or segments after the packet loss. In another aspect of the invention, a selection is made between a packet loss concealment method that performs the aforementioned guided waveform extrapolation and one that does not. The selection may be made responsive to determining whether the first good segment or segments after the packet loss are available and also to whether a segment preceding the lost segment and the first good segment following the lost segment are deemed voiced.
Owner:AVAGO TECH INT SALES PTE LTD
Beacon signaling in a wireless system
InactiveUS7366200B2Improve and optimize system performanceIncrease throughput capabilityPower managementSynchronisation arrangementData transmissionWireless systems
A few high power tones used for synchronization and / or other purposes are transmitted in a FDM system during a period of time into a region, e.g., sector of a cell, e.g., a symbol transmission time period. During normal data transmission symbol periods signals are transmitted using at least 10 tones, e.g., per symbol time. Less than 5 high power signals are transmitted in a symbol time with at least 80% the maximum total transmitter power used for transmitting into said region being allocated to the high power signals where the maximum total transmitter power is determined from a period of time which may includes one or more data and / or high power tone transmission periods. When the high power tones are transmitted at most 20% of transmitter power used for transmitting into the region is available for transmitting other tones with the power normally being distributed among multiple tones. Often some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.
Owner:QUALCOMM INC
Apparatus and method for an aircraft conductor sandwich assembly embedded to an aircraft structure
ActiveUS8937254B2Reduce eliminateReduce weightElectric power distributionLaminationElectrical conductorStructural engineering
An aircraft conductor sandwich assembly configured to be embedded in a composite aircraft structure. The conductor sandwich assembly comprises a plurality of carbon conductors disposed between two sheets of insulating layers and an adhesive resin bonding the plurality of carbon conductors and the two sheets of insulating layers into a carbon sandwich assembly such that (i) the conductors are electrically isolated and (ii) structural loads can be passed through said conductor sandwich assembly.
Owner:AURORA FLIGHT SCI CORP
Method and apparatus for determining the configuration mode of special subframe and the usage mode of time-domain resource
ActiveUS20110292846A1Reduce Inter-Cell InterferenceReduce and eliminate interferenceTime-division multiplexWireless commuication servicesTime domainCurrent cell
A method and an apparatus for determining the configuration mode of special subframe of a cell are provided, and the method includes: receiving notification messages sent from adjacent cells, and the notification messages containing the information indicating the configuration modes of special subframes of the adjacent cells; determining the configuration modes of special subframes of the adjacent cells in accordance with the notification messages; among the possible configuration modes of special subframes of the current cell, selecting preferably a configuration mode of special subframe, which meets the interference requirement of the current cell and has less interference with the adjacent cells, as the current configuration mode of special subframe. The embodiments of the present invention also provide a method and an apparatus for determining the usage mode of the time-domain resource of a cell.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Carton configured for automated loading
A carton having a door and a method of making a carton having a door, the carton being adapted for automated assembly and / or loading by reducing or eliminating interference between side panels of a door and product during loading and use of the door. In an aspect of the invention, the door side panels are slidable within a protected region formed between adjacent panels of the carton.
Owner:KRAFT FOODS GRP BRANDS LLC
Synchronization techniques for a wireless system
ActiveUS7133354B2Improve and optimize system performanceImprove throughputPower managementEnergy efficient ICTCommunications systemOfdm communication system
Power control methods and apparatus for use in a sectorized cell of an OFDM communications system are described. Each sector of a cell uses the same frequencies and transmission times and is synchronized with the other sectors in the cell in terms of tone frequencies used at any given time and symbol transmission times. Tones are allocated to channels in each cell in the same manner so that each channel in a sector has a corresponding channel in another sector. Power differences between channels in different sectors are maintained to be within a pre-selected power difference. Different channels in a cell are assigned different power levels. Wireless terminals are assigned to channels based on channel feedback information. Wireless terminals with poor channel conditions are allocated to higher power channels than wireless terminals with good channel conditions. Lower power channels often include more tones per symbol time than high power channels.
Owner:QUALCOMM INC
System and Method for Suppressing Close Clutter in a Radar System
ActiveUS20100253573A1Increase probabilityEasy to detectRadio wave reradiation/reflectionRadar systemsSignal conditioning
A system for processing electromagnetic waves in a radar system is disclosed. The system includes a transmitter operable to transmit operating waves and calibration waves, one or more receivers operable to receive reflected calibration waves and operating waves, and a system controller operable to process the received calibration waves and operating waves. The system controller may process the received waves by generating a threshold signal based on the calibration waves, and comparing the threshold signal to the operating waves. The system controller may also process operating waves and calibration waves in accordance with one or more signal conditioning algorithms. Additionally, the system controller may display an image representing a target on a display by comparing received operating waves with the generated threshold signal.
Owner:RAYTHEON CO
Subsea navigation and survey
InactiveUS6865139B2Optimize spaceUse is attractiveSonic/ultrasonic/infrasonic transmissionSeismology for water-covered areasOcean bottomMarine engineering
A subsea navigation system comprising a plurality of spaced antenna means provided on a subsea structure arranged to emit electromagnetic radiation. A detection means is provided on a subsea vehicle for receiving and analyzing the electromagnetic radiation transmitted by the antenna means allowing the subsea vehicle to navigate relative to the subsea structure. Each of the antenna means comprises a cathodic protection anode provided on the subsea structure.
Owner:EXPRO NORTH SEA
Apparatus and method to improve WLAN performance in a dual WLAN modality environment
InactiveUS8155695B2InterferenceReduce and eliminate interferenceNetwork topologiesSubstation equipmentDiagnostic Radiology ModalityWireless transceiver
Owner:SONY ERICSSON MOBILE COMM AB
Detecting method and device for suppressing interference of low-frequency noise
ActiveUS20130314370A1Easy to interfereReduce and eliminate interferenceElectric analogue storesElectric pulse generatorAcousticsLow frequency
The invention detects the difference between the maximum signal and the minimum signal at each of a plurality of cycles separately when a sine wave is received. All differences are summed for generating a single detected signal for suppressing the interference of low-frequency noise. No synchronization with the sine wave is necessary and the detection can start at any phase of the sine wave.
Owner:EGALAX EMPIA TECH INC
Method of manufacturing display device
InactiveUS20060003478A1Reducing and eliminating influenceReduce and eliminate interferenceTransistorLaser detailsDisplay deviceOptoelectronics
Arrangements (e.g., methods) for manufacturing a display device, including irradiating an amorphous semiconductor film formed on a substrate with an excimer laser beam to convert the amorphous semiconductor film into a polycrystalline semiconductor film; and irradiating predetermined areas of the polycrystalline semiconductor film intermittently with a continuous wave laser beam while a position of the substrate with respect to the continuous wave laser beam is scanned, crystal grains larger than those of the polycrystalline semiconductor film other than the predetermined areas are formed in each of the predetermined areas locally in the polycrystalline semiconductor film, wherein first thin film transistors are formed in the predetermined areas while second thin film transistors are formed in the polycrystalline semiconductor film other than the predetermined areas thereof.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1
Folded Camera
ActiveUS20190243112A1Correct chromatic aberration and field curvatureReduce and eliminate interferenceTelevision system detailsPrintersRefractive lensPrism
A folded camera that includes two light folding elements such as prisms and an independent lens system, located between the two prisms, which includes an aperture stop and a lens stack. The lens system may be moved on one or more axes independently of the prisms to provide autofocus and / or optical image stabilization for the camera. The shapes, materials, and arrangements of the refractive lens elements in the lens stack may be selected to capture high resolution, high quality images while providing a sufficiently long back focal length to accommodate the second prism.
Owner:APPLE INC
Telecommunication method and apparatus thereof
InactiveUS20110287805A1Interference minimizationReduce and eliminate interferencePower managementRadio transmissionCommunications systemTelecommunications link
The invention relates to a telecommunication method in a base station of a mobile communication system, the mobile communication system comprising a plurality of base stations, a communication link being established between the base station and a user equipment, the method comprising the following steps performed by the base station: selecting one of the plurality of base stations as a target base station for a handover of the user equipment; transmitting a handover request to the target base station; receiving a handover request acknowledgement from the target base station, the handover request acknowledgment being indicative of at least one physical resource of the target base station; and transmitting a handover command to the user equipment via the communication link using the at least one physical resource. The handover command being descriptive of information required for accessing the target base station.
Owner:WSOU INVESTMENTS LLC
Systems and methods for handovers between base radios
ActiveUS20070026864A1Reduce consumptionReduce interferenceEnergy efficient ICTRadio/inductive link selection arrangementsCommunications systemEngineering
A system and method for reducing power consumption and interference in a communications system that has multiple base radios. A base radio controller assigns priorities to the base radios in the system. When higher priority base radios have excess capacity, intracell handovers are used to consolidate communications from lower priority base radios to higher priority base radios. After transferring communications to higher priority base radios, the lower priority base radios can attenuate or shut off their transmitted signal in order to reduce or eliminate all the interference they cause other base stations in the system, and reduce transmission power requirements.
Owner:NEXTEL COMMUNICATIONS
Adaptive Neighboring Cell Measurement Scaling for Wireless Devices
ActiveUS20140185475A1Power consumption is concernReduce and eliminate interferenceError preventionTransmission systemsSelf adaptiveActive state
Adaptive neighboring cell measurement scaling by a wireless user equipment (UE) device. The UE may operate alternately in active and inactive states in a periodic manner according to DRX cycle timing for each of a plurality of DRX cycles. Paging messages may be checked for while in the active state during each DRX cycle. If a paging message is received, it may be decoded using a joint detection technique. The UE may adaptively determine whether or not to perform neighboring cell measurements during at least a subset of the DRX cycles, and perform neighboring cell measurements according to the adaptive determination. The adaptive determination may be based on one or more of joint detection of paging messages, one or more previous cell measurements, or an amount of motion of the UE.
Owner:APPLE INC
Thermoplastic elastomer compositions, methods of making and articles made from the same
ActiveUS20080081869A1Promote crystallizationReduce and eliminate interferenceOrganic dyesThermoplasticVulcanization
Provided are thermoplastic elastomer compositions, many dynamically vulcanized, with superior crystallization kinetics, methods for making the compositions and articles made therefrom. The thermoplastic elastomer compositions comprise at least a propylene polymer thermoplastic, a rubber and a crystallization additive. The processes for preparation of the thermoplastic elastomer compositions comprises dynamic vulcanization of mixture of a propylene polymer thermoplastic, a rubber and a cure agent followed by addition of a crystallization additive. Further, preparation of articles from the thermoplastic elastomer compositions may be accomplished through traditional thermoforming operations useful with conventional thermoplastics.
Owner:CELANESE INT CORP
Method and system using refractive beam mapper having square element profiles to reduce moire interference in a display system including multiple displays
ActiveUS20170131558A1Sacrificing rear display resolutionSacrificing contrastSteroscopic systemsDigital output to display deviceLight beamDisplay device
A multi-display system (e.g., a display including multiple display panels) includes at least first and second displays (e.g., display panels or display layers) arranged substantially parallel to each other in order to display three-dimensional (3D) features to a viewer(s). An optical element(s) such as at least a refractive beam mapper (RBM) is utilized in order to reduce moiré interference.
Owner:APTIV TECH LTD
Arrangement for Eliminating Interference from Acoustic Signals in a Ground-Borne Sound Locating Process
ActiveUS20120105073A1Eliminate distractionsImprove abilitiesPosition fixationElectric switchesStart timeVoltage pulse
An apparatus including a portable receiver with an acoustic sensor and a magnetic field sensor is adapted for locating a fault in an underground electrical line by evaluating ground-borne acoustic signals and electromagnetic signals emitted from a succession of sparking arc-overs caused at the fault location by voltage pulses fed into the electrical line. The apparatus further includes an arrangement for eliminating interference noises from the acoustic signals, wherein the acoustic received signals are delivered to and stored in a memory, and then a respective acoustic signal is processed with reference to a previous stored acoustic signal by a processing algorithm in a processing unit. Start time points of the individual acoustic signals are synchronized with reference to associated electromagnetic signals. A result of the processing algorithm is supplied to an evaluating unit.
Owner:HAGENUK KMT KABELMESSTECHN
Book and document holding device
InactiveUS20100301187A1Reduce and eliminate interferenceEasily substitutedBook-restsFurniture partsPaper documentEngineering
A device for holding a document or book, comprising, a base, a support surface member pivotally connected to the base and movable between a storage position and an operative position, means for temporarily securing the support surface member in the operative position, a writing ledge adapted to support the document or book positioned on the support surface member and means for temporarily attaching the writing ledge to the support surface member, wherein the writing ledge has a least one indentation therein adapted to allow a user of the device to position a hand or forearm within the indentation without interference with the writing ledge.
Owner:PEET ALBERT C H
Internal combustion engine with multiple spark plugs per cylinder and ion current sensing
InactiveUS20090107457A1Low costReduce Signal Processing ComplexitySparking plugsMachines/enginesIonization currentIon current
A system and method for operating a multiple cylinder internal combustion engine having at least two spark plugs per cylinder include selectively isolating all but one spark plug associated with the cylinder at least during an ionization current sensing period to reduce or eliminate interference among ionization current signals flowing through more than one spark plug.
Owner:FORD GLOBAL TECH LLC
Imaging lens system
Compact lens systems are described that may be used in small form factor cameras. The lens systems may include seven lens elements with refractive power, and may provide low F-numbers with wide field of view while maintaining or improving imaging quality and package size when compared to other compact lens systems. The lens systems may, for example, provide a focal ratio of 1.85 or less, with full field of view of 75 degrees or more. The lens systems may conform to a criterion for compactness TTL / ImageH<1.7, where TTL is the total track length of the lens system, and ImageH is the semi-diagonal image height of the image plane at the photosensor. Lens system parameters and relationships may be selected at least in part to reduce, compensate, or correct for optical aberrations and lens artifacts and effects across the field of view.
Owner:APPLE INC
Head-disk interface preconditioning using write current before servo track write
InactiveUS7088532B1Smooth connectionReduce and eliminate interferenceDriving/moving recording headsRecord information storageEngineeringFlying height
Disk drive preconditioning allows the head-disk interface to be burnished or worn so that head-disk interference is reduced or eliminated before servo track writing. The head is positioned closer to the disk than the normal fly height during a preconditioning sweep and then returns to the normal fly height during servo track writing.
Owner:MAXTOR
Method of coordinated wireless downlink transmission
ActiveUS20080299981A1Reduce Inter-Cell InterferenceMaximize specified ratePower managementTelephonic communicationDirty paper codingOptimization problem
To reduce intercell interference, a method of coherently coordinated downlink transmission in a wireless network involves coordinating transmissions from a plurality of base stations to a plurality of wireless units, for coherent, reinforced reception of the transmitted signals at the wireless units. Thus, transmissions from the base stations are coordinated such that signals received at each wireless unit's particular location constructively add, but cancel out at other locations. The signals are generated based on a zero-forcing operation, e.g., by applying zero-forcing complex antenna weight vectors to data symbols designated for transmission to the wireless units. For fairness, the signals are transmitted at no less than a guaranteed common rate. A convex optimization problem (which incorporates a per-base station power constraint or a per-transmission antenna power constraint) is solved to maximize the guaranteed common rate. Dirty paper coding may also be employed.
Owner:WSOU INVESTMENTS LLC
Folded lens system
ActiveUS20190196148A1Reduce and eliminate interferenceProvide functionalityTelevision system detailsColor television detailsPhysicsPrism
A folded lens system that includes lenses with refractive power and two light folding elements such as prisms. A first lens on a first axis refracts light to a first folding element. The first folding element redirects the light from the first axis onto a second axis on which one or more lenses are arranged. The lenses on the second axis refract the light to a second folding element. The second folding element redirects the light onto a third axis on which a sensor is disposed. The lens system may include a front aperture. The sensor may be moved on the third axis to provide autofocusing, or alternatively the lens system may include one or more optical actuators that provide autofocusing. The lens system may have a low F-number (<=2.8), and may have a 35 mm equivalent focal length in the medium to long telephoto range.
Owner:APPLE INC
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