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Center Frequency patents



      

This page is updated frequently with new Center Frequency-related patent applications.




Date/App# patent app List of recent Center Frequency-related patents
07/21/16
20160212766 
 Communication control method, user terminal, and communication apparatus patent thumbnailCommunication control method, user terminal, and communication apparatus
A communication method comprises: broadcasting, from a communication apparatus to a user terminal, system information for device to device (d2d) proximity service, by use of a frequency of a serving cell of the user terminal, the communication apparatus managing the serving cell. The system information includes first information and second information.
Kyocera Corporation


07/21/16
20160212747 
 Frequency-division multiplexing (fdm) using soft clipping (sc) patent thumbnailFrequency-division multiplexing (fdm) using soft clipping (sc)
A method comprising mapping data onto odd frequency subcarriers of a plurality of non-overlapping frequency subcarriers, wherein each of the non-overlapping frequency subcarriers comprises a center frequency that is an odd integer multiple of a lowest center frequency, producing a time signal based on the mapping, applying soft clipping (sc) to signal amplitudes of the time signal according to a polynomial function, and producing a positive-amplitude signal based on the applying.. .
Futurewei Technologies, Inc.


07/14/16
20160203702 
 Wireless surveillance system having obviated the need for battery replacement and  controlling wireless device patent thumbnailWireless surveillance system having obviated the need for battery replacement and controlling wireless device
Disclosed is a wireless surveillance system comprising a probe (200) and a control center, obviating the need for battery replacement, and completely powered by solar energy. During disarmed periods, the probe (200) ceases to probe the external thereof, and ceases to transmit data to the control center.

07/07/16
20160198472 
 Transmit end, receive end, and  coexistence of single carrier system and multicarrier system patent thumbnailTransmit end, receive end, and coexistence of single carrier system and multicarrier system
The signal transmitting method includes that a transmit end modulates a first frequency band that corresponds to a first signal to be transmitted by the single carrier system onto a second frequency band that corresponds to a second signal to be transmitted by the multicarrier system, to obtain a transmit signal including at least the first signal and/or the second signal. A spacing between a center frequency of a first subchannel and a center frequency of a second subchannel is an integer multiple of a spacing between two adjacent second subchannels.
Huawei Technologies Co., Ltd.


06/30/16
20160191221 
 User terminal, radio access network, and communication control method patent thumbnailUser terminal, radio access network, and communication control method
A user terminal according to a first feature performs uplink communication with a radio access network by simultaneously using a plurality of carriers. The plurality of carriers include a first carrier used for mobility control of the user terminal, and a second carrier that provides radio communication in coordination with the first carrier.

06/30/16
20160187461 
 Radar false alert reduction patent thumbnailRadar false alert reduction
A radar detector suppresses alerts from vehicle guidance systems, by sweeping for a consistent radar signal; the center frequency of the signal is stored and the detector suppresses warnings of radar signals near that frequency. The detector uses an enhanced method for suppression of signals near a known location of a false signal source; in the event the detector detects a radar signal and finds a matching stored false signal, the detector will first compare the strength of the received signal to a threshold strength that is computed based upon the distance of the detector from the stored false signal, and will only suppress signals below threshold.

06/16/16
20160166237 
 Ultrasonic diagnostic apparatus and image processing apparatus patent thumbnailUltrasonic diagnostic apparatus and image processing apparatus
An ultrasonic diagnostic apparatus according to an embodiment includes transmission circuitry, receiving circuitry and extracting circuitry. The transmission circuitry cause an ultrasonic probe to perform three or more times of ultrasonic wave transmissions, an ultrasonic wave to be transmitted including a center frequency component, a phase of the center frequency component being different in each transmission.
Toshiba Medical Systems Corporation


06/09/16
20160164496 
 Methods and systems for dynamically adjusting frequency offsets for mitigating interference patent thumbnailMethods and systems for dynamically adjusting frequency offsets for mitigating interference
Disclosed herein are methods and systems for dynamically adjusting frequency offsets for mitigating interference. One embodiment takes the form of a process carried out by a mobile radio configured to use an adjustable transmit frequency.
Motorola Solutions, Inc


06/02/16
20160156320 
 Method and apparatus of an input resistance of a passive mixer to broaden the input matching bandwidth of a common source/gate lna patent thumbnailMethod and apparatus of an input resistance of a passive mixer to broaden the input matching bandwidth of a common source/gate lna
A cascode amplifier circuit comprises a first spiral inductor coupled to a source of a first transistor; a second spiral inductor coupled to a drain of a second transistor; a third inductor connecting the first transistor to the second transistor; a first capacitor coupled in parallel to the third inductor forming a bandpass filter; and a second capacitor coupled in parallel to the second spiral inductor forming a resonant circuit, wherein the resonant circuit oscillates at a center frequency.. .
Tensorcom, Inc.


06/02/16
20160151040 
 Lung tissue identification in anatomically intelligent echocardiography patent thumbnailLung tissue identification in anatomically intelligent echocardiography
Issuance of ultrasound pulses to a volume and receiving echo data is followed by estimating, based on the received data, center frequency subvolume-by-subvolume. Distinguishing between heart and lung tissue occurs based on a result of the estimating, and may include automatically identifying a spatial boundary (332) between the heart and lung tissue (324, 328), or a user display of center frequencies that allows for visual distinguishing.
Koninklijke Philips N.v.


05/26/16
20160149316 

Inverted f-antennas at a wireless communication node


The disclosure relates to a node in a wireless communication arrangement, the node comprising an antenna arrangement that comprises a first and second inverted f antenna. The inverted f antennas comprise a corresponding first and second feed connection, first and second ground connection and a corresponding first and second radiating element mainly extending from the respective ground connection along a corresponding first and second longitudinal extension.
Telefonaktiebolaget L M Ericsson (publ)


05/26/16
20160149306 

Microstrip antenna structure and microwave imaging system using the same


A microstrip antenna structure is provided, which includes a substrate, a ring microstrip line and a signal transmission port. The substrate has opposite first and second surfaces.
Metal Industries Research & Development Centre


05/19/16
20160140977 

Noise cancellation method


An embodiment of the invention provides a noise cancellation method for an electronic device. The method comprises: receiving an audio signal; applying a fast fourier transform operation on the audio signal to generate a sound spectrum; acquiring a first spectrum corresponding to a noise and a second spectrum corresponding to a human voice signal from the sound spectrum; estimating a center frequency according to the first spectrum and the second spectrum; and applying a high pass filtering operation to the sound spectrum according to the center frequency..
Htc Corporation


05/12/16
20160132147 

Capacitive touch system and frequency selection method thereof


There is provided a capacitive touch system including a touch panel, a plurality of amplification units, a plurality of anti-aliasing filters and a control unit. The touch panel includes a plurality of driving electrodes and a plurality of sensing electrodes configured to form inductive capacitance.
Pixart Imaging (penang) Sdn.bhd.


05/05/16
20160128085 

Channel mapping for an aggregated touchless wireless fronthaul


A method implemented by a wireless fronthaul unit, the method comprises aggregating a plurality of first wireless channel signals to produce a first aggregated signal via digital frequency-domain mapping (fdm), wherein the first wireless channel signals are positioned in the first aggregated signal in non-overlapping first frequency bands, each non-overlapping first frequency band having a first bandwidth and a center frequency, wherein each respective center frequency is an odd integer multiple of a lowest center frequency, converting the first aggregated signal into a first modulated signal, and transmitting the first modulated signal to a wireless fronthaul link.. .
Futurewei Technologies, Inc.


05/05/16
20160127927 

Systems and methods for frequency error correction in communication systems


Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency.
Entropic Communications, Inc.


05/05/16
20160126972 

Touch control detection system, delta-sigma modulator and modulating method thereof


A touch control detection system, a delta-sigma modulator and a modulating method thereof are provided. The delta-sigma modulator includes a quantizer and n integrating units.
Novatek Microelectronics Corp.


05/05/16
20160126897 

Semiconductor amplifier bias circuit and semiconductor amplifier device


A semiconductor amplifier bias circuit includes a first transmission line, a first grounded capacitor, a second transmission line and a power supply terminal. The first transmission line is connected to an output end part of the output matching circuit and the external load.
Kabushiki Kaisha Toshiba


04/28/16
20160119050 

Receiver, frequency diversity communications using beacon and methods useful in conjunction therewith


A communication system comprising at least one communication network node having a capacity for communicating with at least one additional communication network node at a given center frequency; and at least one external frequency converter, external to said node, operative to cause at least one communication network node, from outside said node, to communicate with at least one additional communication network node, at least on occasion, according to a given communication protocol, at at least one converted center frequency which differs from the given center frequency, and also comprising beacon functionality.. .
Elta Systems Ltd.


04/28/16
20160118946 

Distortion-compensating power amplifier and compensating for distortion to amplify power


A distortion-compensating power amplifier compensates for nonlinear distortion in a power amplifier. The distortion-compensating power amplifier includes: a predistorter that performs pre-distortion processing, the pre-distortion processing applying an inverse characteristic of a distortion characteristic that is generated in the power amplifier to an input signal; a filter that performs band limitation on the pre-distorted input signal by using a frequency characteristic that is asymmetric with respect to a center frequency of the input signal, the filter having a filter coefficient that is a complex number; a down-sampler that down-samples the band-limited input signal; and a digital-to-analog converter that converts the down-sampled input signal from a digital signal to an analog signal..
Panasonic Corporation


04/21/16
20160112225 

Measuring waveforms with the digital infinite exponential transform


A method is performed of selecting a signal of interest from a compound signal. The method includes generating a matrix and initializing a first row of the matrix to zero.

04/21/16
20160112114 

Add-on synchronization of frequency diversity communications and methods useful in conjunction therewith


Add-on apparatus dynamically enhancing frequency diversity of a main signal sent over an existing communication system, the system using a communication protocol to convey the main signal from a tx end to an rx end, the add-on apparatus comprising a transmission frequency converter (tfc) at the tx end operative while the system is transmitting the main signal, to at least once shift a given center frequency about which the system is transmitting, to at least one corresponding alternative center frequency, wherein the tfc and an reception frequency converter at the rx end share prior knowledge defining how each shift of the given center frequency is to be timed relative to at least one recognizable element within the known communication protocol and wherein the transmission frequency converter is operative to use the prior knowledge to recognize the at least one recognizable element and to shift the center frequency accordingly.. .

04/14/16
20160105909 

Method and apparatus of accessing channel in wireless communication system


A method is provided for accessing a channel in a wireless local area network. A device receives an operation element to set up an operating channel from an access point (ap).

04/14/16
20160105803 

Dc subcarrier handling in narrowband devices


Methods, systems, and devices are described for direct current (dc) subcarrier handling for narrowband user equipment (ue). A ue may identify a narrow bandwidth region allocated for operation within a wide bandwidth carrier, determine that the narrow bandwidth region is centered about a different frequency than a center subcarrier of the wide bandwidth carrier, and, accordingly, select an operating mode.

04/14/16
20160103008 

Guided wave radar level gauge system with reduced end of probe reflection


The present invention relates to a guided wave radar level gauge system comprising a transceiver for generating an electromagnetic transmit signal within a predetermined frequency range having a center frequency, a flexible single conductor probe having a first end connected to the transceiver and extending towards and into the product to a second end of the flexible single conductor probe; and a probe aligning member attached to the second end of the flexible single conductor probe for keeping the flexible single conductor probe substantially vertically extending from the first end to the second end. The probe aligning member exhibits a horizontal extension that increases with increasing distance from the first end of the flexible single conductor probe along a vertical distance greater than one half of a wavelength of the transmit signal at the center frequency.

04/07/16
20160100294 

Method and system for direct mode communication within a talkgroup


A method and system for direct mode operation (dmo) of a talkgroup enables device to device (d2d) dmo operation leveraged from a land mobile radio (lmr) system. The method includes scanning at a radio receiver a defined radio frequency spectrum; receiving at the radio receiver in the defined radio frequency spectrum a wake-up signal; identifying a talkgroup identifier in the wake-up signal, wherein the talkgroup identifier corresponds to a talkgroup being monitored by the radio receiver; in response to identifying the talkgroup identifier, decoding code sequences included in the wake-up signal; identifying in at least one of the code sequences both a center frequency and a transmission bandwidth of the dmo transmission; and tuning the radio receiver to receive the dmo transmission at the center frequency and transmission bandwidth..
Motorola Solutions, Inc


04/07/16
20160099747 

Add-on channel compensation of frequency diversity communications and methods useful in conjunction therewith


A communication system, typically wireless and comprising at least one wireless (say) communication network node having a capacity for communicating with at least one additional wireless (say) communication network node at a given center frequency; and at least one external frequency converter, external to the node, operative to cause at least one wireless (say) communication network node, from outside said node, to communicate with at least one additional wireless (say) communication network node, at least on occasion, according to a given e.g. Wireless communication protocol, at at least one converted center frequency which differs from the given center frequency, wherein a channel compensation signal (ccs) is employed..
Elta Systems Ltd.


04/07/16
20160099720 

Wideband digitally controlled injection-locked oscillator


A novel and useful digitally controlled injection-locked rf oscillator with an auxiliary loop. The oscillator is injection locked to a time delayed version of its own resonating voltage (or its second harmonic) and its frequency is modulated by manipulating the phase and amplitude of injected current.

03/24/16
20160087773 

Base station, terminal, band allocation method, and downlink data communication method


Provided are a base station, a terminal, a band allocation method, and a downlink data communication method with which bands can be efficiently allocated. In a base station in which a plurality of unit bands can be allocated to a single communication, when a data receiver acquires terminal capability information transmitted by a terminal in the initial access unit band and the bandwidth available for communication indicated by the terminal capability information can accommodate a plurality of unit bands, a unit band group which includes the initial access unit band as well as the unit bands adjacent thereto is allocated to the terminal, and a communication band movement indication, which indicates the movement of the center frequency in the communication band of the terminal toward the center frequency in the unit band group, is transmitted to the terminal using the initial access unit band..
Panasonic Intellectual Property Corporation Of America


03/24/16
20160087601 

Fully electronically programmable complex filter


The fully electronically programmable complex filter employs a network of current amplifiers (cas), each ca having differential pairs biased with different tail currents, the outputs being programmed by adjusting these tail currents. Each ca has an rc circuit at its input including a resistor r and a capacitor c, and a feedback path connecting one of its outputs to the rc circuit, thereby offering independent programmability of center frequency, pole frequency, and programmable gain.
King Fahd University Of Petroleum And Minerals


03/24/16
20160084945 

Coaxial direct-detection lidar-system


The invention relates to a coaxial direct-detection lidar system for measuring velocity, temperature and/or particulate density. The system comprises a laser source for emitting a laser light beam having a lasing center frequency along an emission path.
Danmarks Tekniske Universitet


03/17/16
20160080085 

Extremely high frequency (ehf) distributed antenna systems, and related components and methods


Extremely high frequency (ehf) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing ehf modulated data signals to a rau(s) is provided.
Corning Optical Communications Llc


03/17/16
20160080017 

Adaptive radio frequency local oscillator tuning


Methods, systems, and devices are described for adaptively or dynamically tuning a radio frequency (rf) local oscillator (lo) for wireless communications. In one example, a radio may receive an rf signal and the lo of a radio may be tuned to a frequency that is an offset from its reception (rx) center frequency to deal with interference from another signal, such as one being transmitted using a different radio access technology (rat) than that of the radio.
Qualcomm Incorporated


03/10/16
20160073359 

Method and system for controlling a communications carrier's power spectral density (psd) using spread spectrum for matched spectral allocation


A method of reducing adjacent satellite interference, the method comprising monitoring, by a processor, a power spectral density (psd) of a signal transmitted by a remote transmitter, determining, by the processor, that the psd of the signal transmitted by the remote transmitter is above a predetermined level, and reducing the psd of the signal transmitted by the remote transmitter by adjusting at least one of a spread spectrum spreading factor, a power level, a modulation factor, and a forward error correction (fec) rate using a modulator while maintaining a constant spectral allocation and center frequency of the signal.. .
Comtech Ef Data Corp.


03/10/16
20160072614 

Resource structure and indication for rel-13 mtc ue


Embodiments described herein are directed methods and network nodes for operating a wireless device in a wireless network. The network node is configured to determine a subchannel within a system bandwidth of the wireless network.
Telefonaktiebolaget L M Ericsson (publ)


03/10/16
20160072520 

Sampling/quantization converters


Provided are, among other things, systems, apparatuses, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. One such apparatus includes an input line for accepting an input signal that is continuous in time and continuously variable, multiple processing branches coupled to the input line, and an adder coupled to outputs of the processing branches.
Syntropy Systems, Llc


03/10/16
20160072450 

Semiconductor amplifier


A semiconductor amplifier includes a semiconductor amplifying element, an output terminal, an output matching circuit, and an output bias circuit. The output matching circuit includes a bonding wire, a first transmission line, and a second transmission line.
Kabushiki Kaisha Toshiba


03/03/16
20160062208 

Flat-top tunable filter


A tunable plc optical filter having sequentially connected thermally tunable mach-zehnder (mz) interferometers is described. The cascade of mz interferometers, each having a free spectral ranges matching itu frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other itu frequency.
Lumentum Operations Llc


02/25/16
20160056542 

Open waveguide beamforming antenna for radio frequency identification reader


An open waveguide antenna for a radio frequency identification reader includes a conductive annular waveguide concentric about an axis and configured for operation within an operating frequency band. A radiating slot is formed in at least one wall of the waveguide is also concentric about the axis.
Motorola Solutions, Inc.


02/25/16
20160051198 

System for monitoring user utilizing pulse signal


The present disclosure herein relates to a system for monitoring a user using a pulse signal. An user monitoring system according to an embodiment of the present invention may comprise a transmitter configured to transmit a pulse signal through at least one antenna at different times; and a biosignal measuring device comprising a receiver for receiving and restoring the pulse signal that has passed through a subject through at least one antenna and a processing unit for processing the pulse signal to analyze at least one of a bandwidth, a center frequency or an amplitude of the pulse signal and for measuring a biosignal of the subject on the basis of a result of analysis..
Industry-academic Cooperation Foundation, Yonsei University


02/04/16
20160036382 

Low power wide tuning range oscillator


A wide tuning range oscillator system uses multiple active cores with cross-coupled transistors and multiple tapped inductors having windings that can be connected to circuit nodes. These active cores are connected to a pair of symmetric tapping points and are switched on/off by biasing elements.
Texas Instruments Incorporated


01/14/16
20160013821 

Apparatus and fast local oscillator re-tune for residual side band reduction


Various aspects of the present disclosure are directed to apparatuses and methods that can mitigate the undesirable effects of residual side band (rsb) signal by actively re-tuning the local oscillator of a transmitter to be at or near the center frequency of the carrier. Other aspects, embodiments, and features are also claimed and described..
Qualcomm Incorporated


12/31/15
20150381331 

A transmitting a reference signal from a base station to a user equipment in a wireless communication system and apparatus therefor


A method of transmitting a reference signal from a base station to a user equipment in a wireless communication system and apparatus therefor are disclosed. The present invention includes dividing a system band into at least one or more partial bands, configuring a time-axis high density reference signal on a high frequency partial band with reference to a center frequency of the system band, configuring a time-axis low density reference signal on a low frequency partial band with reference to the center frequency, and transmitting the configured reference signals to the user equipment..
Lg Electronics Inc.


12/31/15
20150380803 

Signal tracking and antenna positioning system


Embodiments disclosed herein relate to a communication system. Particularly disclosed are systems and methods for locating and tracking radio frequency signals and for automatically positioning an antenna to receive a desired radio frequency signal.
Troll Systems Corporation


12/17/15
20150365945 

Mobile communication device and allocating resources outside of a virtual carrier based on ue capabilities


A communications device configured to receive data from a mobile communications network including one or more network elements providing a wireless access interface. The wireless access interface provides plural communications resource elements across a host frequency bandwidth, and includes, within the host frequency bandwidth, first communications resource elements within a first frequency bandwidth for allocation preferably to reduced capability devices to receive signals representing data transmitted by a transmitter within the first bandwidth forming a first virtual carrier, the reduced capability devices each having a receiver bandwidth greater than or equal to the first frequency bandwidth but less than the host frequency bandwidth.
Sony Corporation


12/03/15
20150349417 

Antenna positioning system with automated skewed positioning


A method of receiving a satellite signal using a satellite dish connected to a receiver, the method includes a peak identification stage including automatically sweeping the satellite dish to identify peaks of satellite signals received by the receiver having a center frequency matching the center frequency of the satellite signal, a peak evaluation stage including automatically evaluating one or more said peaks by determining the bandwidth thereof and choosing the peak having a bandwidth matching the bandwidth of the satellite signal, and a signal strength maximizing stage including automatically sweeping the satellite dish until the signal strength of a satellite signal having said bandwidth is maximized.. .
Windmill International, Inc.


11/19/15
20150333842 

Apparatus and transmitting data using human body


An apparatus and method for transmitting data using a human body. The apparatus includes a parallel bit stream generation unit, a frequency selective spreading unit, a matched filter unit, and a transmission filter unit.
Electronics And Telecommunications Research Institute


11/19/15
20150333721 

Dynamically detecting resonating frequencies of resonating structures


There is described herein a real-time scheme, implementable in software, hardware, or a combination thereof, to detect a resonating frequency of a structure from a sensed signal and dynamically set the center frequency of an adaptive compensator for effective attenuation of the resonating frequency.. .
Pratt & Whitney Canada Corp.


11/19/15
20150327774 

Bio signal measuring apparatus and user monitoring system including the same


A bio signal measuring apparatus is provided which includes a sampling unit, and a processing unit. The sampling unit samples a portion of a pulse included in a pulse signal penetrating a person to be measured, and portions sampled from a plurality of pulses included in the pulse signal are different from each other.
Industry-academic Cooperation Foundation, Yonsei University


11/12/15
20150325923 

Antenna


The antenna is provided with: a conductor; an ebg structure that is disposed above the conductor and that contains plural square elements arranged in a matrix; and a radiation element disposed above the ebg structure. A distance l1 between the conductor and the ebg structure satisfies 0.01λ0≦l1≦0.15λ0, preferably satisfies 0.025λ0≦l1≦0.085λ0, and more preferably satisfies 0.035λ0≦l1≦0.07λ0, where an wavelength of a design center frequency of the radiation element is denoted by λ0..
Nihon Dengyo Kosaku Co., Ltd.


11/12/15
20150322768 

Enhanced bandwidth transducer well integrity measurement


A single critically damped acoustic stack yields a wide frequency range as an acoustic transmitter or as an acoustic transducer having particular use in well integrity determination. The critically damped present acoustic stack utilizes a plurality of stacked acoustic elements such as piezoelectric ceramics that are energized in two manners, providing different center frequencies, each producing a respective center frequency of 100% bandwidth to yield an acoustic stack having a total bandwidth exceeding the bandwidth of an acoustic element or the bandwidth of the plurality of acoustic elements.
Piezotech Llc


10/22/15
20150304377 

Method for reducing interference caused by overlapping channels in a wireless communication system


A method of reducing interference between wireless networks operating on channels with different bandwidths is proposed. One wireless network operates on a narrow band channel while the other network operates on a wide band channel that overlaps the narrow band channel.
Panasonic Corporation


10/22/15
20150303548 

Reconfigurable branch line coupler


A reconfigurable branch line coupler and methods of designing and reconfiguring the branch line coupler are disclosed. The reconfigurable branch line coupler includes a plurality of transmission lines, each of which comprises a phase shifter.
International Business Machines Corporation


10/22/15
20150301651 

Frequency conversion in a touch sensor


A touch sensitive device includes a touch interface having rows and columns, a signal generator for generating a plurality of unique orthogonal signals on at least a plurality of the rows, respectively, and a frequency converter. The frequency converter receives a first touch signal present on at least one of the plurality of columns, converts the first touch signal to a second signal having a second center frequency, and outputs the second signal.
Tactual Labs Co.


10/15/15
20150295543 

Logarithmic amplifier with universal demodulation capabilities


A logarithmic amplifier (lda) is described that includes an amplifier configured to oscillate a modulated input signal, a feedback establishing a 180 degree phase shift between the amplifier input and the output and maintaining oscillation of the input signal, a parallel resonant circuit connected to the amplifier output causing the amplifier to resonate at or around a center frequency, and a controller connected to the amplifier input cyclically terminating oscillation of the input signal each time a pre-determined threshold of current is detected, the controller including a low pass filter configured to generate a second output signal having a repetition frequency. The lda may be used for am with or without a pll and/or a superheterodyne.

10/01/15
20150281423 

Portable device and vehicle control system


A control system includes a portable device transmitting to a proximity control signal controlling locking/unlocking of an opening/closing body of the vehicle from near the vehicle, and a remote control signal controlling an engine remotely, intensity of the remote control signal higher than the proximity control signal, and a control device receiving a signal transmitted by the portable device. The portable device transmits by a same transmission antenna the whole of the proximity control signal at a single center frequency, and all of divided signals obtained by dividing the whole of the remote control signal into plural pieces at plural center frequencies.
Omron Automotive Electronics Co., Ltd.


10/01/15
20150280756 

Wireless device and wireless access system


A wireless device includes a digital-to-analog converter that converts a digital transmission signal within a digital signal processing band to an analog transmission signal, a modulator that performs quadrature modulation of an analog transmission signal obtained by the digital-to-analog converter using a first local signal having a first frequency outside a frequency range, the frequency range centered around a center frequency of a transmission signal and having a bandwidth of the digital signal processing band, and outputs a modulated signal, a frequency converter that performs a frequency shift of a modulated signal output from the modulator using a second local signal having a second frequency within the frequency range, and an inhibitor that performs carrier leakage inhibition processing on the digital transmission signal, based on a signal obtained by the frequency converter.. .
Fujitsu Limited


09/24/15
20150270890 

Apparatus and network level synchronization in multiple low earth orbit (leo) satellite communications systems


A synchronization approach is provided that compensates for the large doppler offset of the satellites in a leo satellite system by exploiting the predictable and deterministic nature of the doppler component, and thereby simplifies the delay and the doppler domain uncertainty ranges that the physical layer receivers have to resolve. The compensation is based on the known ephemeris information of the leo satellite and the known positions of the gateway (gw) and the user terminal (ut) on the ground.
Hughes Network Systems, Llc


09/17/15
20150263604 

Power conversion device and power conversion method


A transformer steps down an input ac power, and supplies the ac power to a converter. The primary voltage of the transformer detected by a voltage detector is supplied to a converter controller and a frequency detector via a bpf.
Mitsubishi Electric Corporation


09/17/15
20150263426 

Multiband antenna and multiband antenna configuration method


A multiband antenna configuration method for configuring a multiband antenna to transmit and receive radio signals of a plurality of frequency bands includes determining a distance between a magnetic conductor reflector and a first radiation portion, calculating a first and second reflection phase value at the first and second center frequency of a first and second frequency band according to a configuration requirement corresponding to the distance, determining a length and width of the multiband antenna, adjusting materials and geometric features of the magnetic conductor reflector to change a curve representing relationship between reflection phases of the magnetic conductor reflector and frequencies and to make the first reflection phase corresponding to the first center frequency and the second reflection phase corresponding to the second center frequency equal to a first reflection phase value and second reflection phase value, and determining the materials and geometric features according to the curve.. .
Wistron Neweb Corporation


09/17/15
20150257734 

High frequency ultrasound transducer having an ultrasonic lens with integral central matching layer


High frequency ultrasound transducers configured for use with high frequency ultrasound diagnostic imaging systems are disclosed herein. In one embodiment, an ultrasound transducer includes a concave lens having an average thickness in a center portion that that is substantially equal to an odd multiple a ¼-wavelength of the center frequency of the ultrasound transducer..
Fujifilm Sonosite, Inc.


09/10/15
20150253177 

Fill-level measuring device


A fill-level measuring device working according to the pulse radar principle for measuring a fill level of a fill substance in a container, comprising: a transmission system a pulse producing system, which, comprises, in each case, at least two measurements, for each measurement, produces a transmission signal composed of at least one microwave pulse periodically following one another, of center frequency predetermined for the particular measurement. The center frequencies of the transmission signals of at least two of the measurement are different from one another.
Endress + Hauser Gmbh + Co. Kg


08/27/15
20150245315 

Multicast transmission terminal, multicast reception terminal, multicast system, computer readable storage device, multicast transmission method, and multicast reception method


Provided is a multicast transmission terminal including: a transmission/reception unit that performs multicast transmission using a predetermined center frequency and a bandwidth, and receives acknowledgement transmitted using a center frequency different from the center frequency of the multicast transmission and a bandwidth narrower than the bandwidth of the multicast transmission; a discovery unit that transmits an inquiry packet in a broadcast manner and discovers reception terminals (destinations of the multicast transmission); an allocation unit that allocates a center frequency used when the reception terminal transmits the acknowledgement in response to the number of reception terminals discovered by the discovery unit, allocates the center frequency different from the center frequency of the multicast transmission to the reception terminal, and generates an allocation list indicating the allocation; and a notification control unit that allows the transmission/reception unit to transmit the allocation list in multicast manner.. .
Olympus Corporation


08/27/15
20150241545 

Single platform doppler geolocation


To make small uavs capable of geolocation of emitters, a low cost, low power, small weight and power radio receiver receives and tracks doppler frequency at a minimum. In order to minimize the size, weight and power (swap), a single receiving element array is utilized.
Lockheed Martin Corporation


08/13/15
20150223701 

Breathing and heartbeat feature extraction and victim detection


Systems and methods for detecting biometrics using a life detecting radar are disclosed. Life detecting radars can include transmit antennas configured to transmit continuous microwave (“cw”) radio signals that reflect back upon making contact with various objects.
California Institute Of Technology


08/06/15
20150223087 

Method for deactivated secondary cell measurement and communications apparatus utilizing the same


A method for deactivated secondary component carrier (cc) measurement in a communications apparatus providing wireless communications services via a first cc in a wireless network includes: determining a switch timing to perform bandwidth extension or frequency adjustment required for performing a deactivated secondary cc measurement; extending an operation bandwidth or adjusting a center frequency of at least one signal processing component included in the communications apparatus at the switch timing, wherein an operation band defined by the operation bandwidth and the center frequency of the signal processing component covers at least a bandwidth of the secondary cc; and performing the deactivated secondary cc measurement after extending the operation bandwidth or adjusting the center frequency. The secondary cc is not able to perform data transmission or reception during a deactivated state..
Mediatek Inc.


07/30/15
20150215681 

Single-cable automatic ird installation procedure


A method, apparatus, system, and computer program product for auto-installing an integrated receiver/decoder (ird) includes issuing an auto-installation command from the ird to an outdoor unit (odu) and receiving a plurality of tones from the odu in response to the auto-installation command, each tone representing a center frequency of available user bands (ubs). The auto-installation also includes acquiring a ub center frequency by the ird, requesting the odu to confirm a ub number corresponding to the acquired ub center frequency, and receiving confirmation from the odu that a ub number corresponds to the acquired ub center frequency.
Entropic Communications, Inc.


07/30/15
20150215036 

System and testing the speed of a microwave photonics system


A system testing the speed of a microwave photonic system, having a mach zehnder interferometer that includes a first arm with a photonic system to be tested and an amplifier arranged to amplify the output of the photonic system, and a second arm with an attenuator configured to match the output power of the amplifier, with at least one filter arranged at the output of the mach zehnder interferometer, the filter having a pass band that includes the center frequency of a continuous wave microwave signal applied to the mach zehnder interferometer arms. A continuous wave microwave signal is applied to the input of the mach zehnder interferometer, a signal is applied to only the second arm with the photonic link, and the output of the bandpass filter is measured with an oscilloscope and a microwave power detector..
The Government Of The Us, As Represented By The Secretary Of The Navy


07/23/15
20150207614 

Frequency correction and time slot boundary detection


There is provided a method for determining frequency correction and time slot boundary detection for synchronization in a wireless device. A plurality of cell broadcast frequencies is acquired.
Telefonaktiebolaget Lm Ericsson (publ)


07/23/15
20150207484 

Composite rf current attenuator for a medical lead


A composite rf current attenuator for a medical lead includes a conductor having a distal electrode contactable to biological cells, a bandstop filter in series with the lead conductor for attenuating rf currents flow through the lead conductor at a selected center frequency or across a range of frequencies about the center frequency, and a lowpass filter in series with the bandstop filter and forming a portion of the lead conductor. The bandstop filter has a capacitance in parallel with a first inductance.
Greatbatch Ltd.


07/09/15
20150195667 

Audio signal processing device


An audio signal processing device receives a plurality of audio signals via a left channel (l) and a right channel (r) so as to produce a composite signal l+r and a difference signal l−r. The composite signal l+r is changed in phase with an all-pass filter, while the difference signal l−r is changed in phase and frequency characteristic with a band-pass filter (e.g.
Yamaha Corporation


06/25/15
20150181603 

Allocating transmission resources to mtc-type terminals


An apparatus and method for allocating transmission resources to mtc-type terminals and transmitting data in mobile telecommunication systems in dependence upon the capability of the rf receiver equipment of those terminals. Where a virtual carrier is established to carry data for a given mtc-type device, the position of the center frequency for that virtual carrier is assigned on the basis of both the capability of the rf receiver equipment of that terminal and the degree of traffic congestion on the frequency band at which the virtual carrier has been established..
Sony Corporation


06/25/15
20150177296 

Spectrum analyzer using multiple intermediate frequencies and multiple clock configurations for residual, spurious and image signal reduction


A spectrum analyzer for measuring an rf signal over a selected frequency span configured to use multiple intermediate frequencies (ifs) for residual, spurious and image signal reduction. The spectrum analyzer has both a primary if path and a secondary if path configured to provide band pass filtering of the if signals.
Test Equipment Plus, Inc.


06/18/15
20150168466 

Method of measuring frequency of coordinate indicating device, and electronic apparatus thereof


An electronic apparatus for measuring a frequency of an electromagnetic signal emitted from a coordinate indicating device contacting a sensor pad, and method are provided. The electronic apparatus includes a signal receiving unit that receives the electromagnetic signal, a band-pass filter unit including a pair of band-pass filters that generates a first filtered signal and a second filtered signal by respectively filtering the electromagnetic signal in a first frequency range and a second frequency range corresponding to a center frequency of the coordinate indicating device, and a controller that acquires a frequency value of the electromagnetic signal based on a ratio value between the first filtered signal and the second filtered signal..
Samsung Electronics Co., Ltd.


06/18/15
20150164364 

Heartbeat measuring apparatus, heartbeat measuring method and driver monitoring system


A heartbeat measuring apparatus includes a receiver and a measurer. The receiver is configured to receive ultra wideband (uwb) signals penetrating a subject.
Industry-academic Cooperation Foundation, Yonsei University


06/11/15
20150160257 

Optical accelerometer systems and method


An example optical accelerometer system is provided. An optical beam is provided having a predefined center frequency and is frequency-modulated about the predefined center frequency.
Northrop Grumman Systems Corporation


06/11/15
20150157270 

Using an adaptive band-pass filter to compensate for motion induced artifacts in a physiological signal extracted from video


What is disclosed is a system and method for compensating for motion induced artifacts in physiological signals extracted from a video of a subject being monitored for a physiological function in a non-contact, remote sensing environment. The present method identifies a center frequency from a physiological signal obtained from processing a prior video segment.
Xerox Corporation


06/04/15
20150156776 

Method of bandwidth configuration for a user equipment in a mtc based communication network


The present invention relates to a method, in a base station of a mtc based communication system, of configuring bandwidth for a mtc user equipment, wherein bandwidth of the mtc user equipment is smaller than system bandwidth for mtc, the method comprising the steps of: receiving a first message from the mtc user equipment, the first message indicating an offset of bandwidth selected by the mtc user equipment according to a predetermined selection policy relative to the system bandwidth, wherein the selected bandwidth covers center frequency band of the system bandwidth; determining the bandwidth selected by the mtc user equipment according to the first message. According to the invention, the system bandwidth for mtc and the bandwidth of the mtc user equipments can be asymmetrically increased, while extending the capacity of mtc by allocating wider bandwidth.
Alcatel Lucent


06/04/15
20150155892 

Sensor and measuring arrangement


A sensor for liquid and/or gas analysis comprising a measuring transducer for producing a measurement signal, and, connected with the measuring transducer, especially separably, a compact transmitter, which is embodied for receiving and further processing the measurement signal. The compact transmitter includes: a transmitter housing; a transmitter circuit arranged in the transmitter housing; arranged in the transmitter housing, a first interface, via which the transmitter circuit is connectable by means of a connection cable with a first superordinated data processing system, especially one embodied as a superordinated control system; and arranged in the transmitter housing, a second interface, which connects the transmitter circuit with an antenna and which is embodied to supply the antenna with, or to receive by means of the antenna, a radio signal, whose center frequency has a wavelength λ.
Endress + Hauser Conducta Gasellschaft Fur Mess- Und Regeltechnik Mbh + Co. Kg


06/04/15
20150154966 

Haptic signal synthesis and transport in a bit stream


Techniques for synthesizing a parameterized haptic track from a multichannel audio signal and embedding the haptic track in a multichannel audio codec bit stream. The haptic track synthesis can occur while encoding the multichannel audio signal as the multichannel audio codec bit stream.
Dolby Laboratories Licensing Corporation


05/21/15
20150137869 

Mixing circuit


A balun converts a single-ended radio-frequency signal into differential signals. A differential matching circuit outputs a maximum-level positive-phase output signal at a lower or higher frequency than the center frequency and outputs a maximum-level reverse-phase output signal at a higher or lower frequency than the center frequency.
Panasonic Intellectual Property Management Co., Ltd.


05/14/15
20150133068 

Tunable rf n-path filter


Methods and apparatus, including computer program products, are provided for tunable filters. In one aspect there is provided an apparatus.

05/14/15
20150131764 

Methods, devices and systems for receiving and decoding a signal in the presence of noise using slices and warping


A method may comprise receiving and sampling a signal. The signal may encode a data packet.

05/07/15
20150127202 

Vehicle vibration suppression control device and vehicle vibration suppression control method


A vehicle vibration suppression control device includes: a first torque target value calculation unit that inputs a motor torque instruction value and that uses a previously modeled transmission characteristic of the vehicle to calculate a first torque target value; a second torque target value calculation unit that includes a filter having a characteristic of a model h(s)/gp(s) formed with a model gp(s) of a transmission characteristic of a torque input to the vehicle and a motor angular velocity and a bandpass filter h(s) in which a frequency in the vicinity of a torsional vibration frequency in the vehicle is a center frequency, that inputs a deviation between a detection value of the vehicle state amount and an estimation value of the vehicle state amount and that calculates a second torque target value; and a motor torque control unit that controls a motor torque according to a final torque target value obtained by adding the first torque target value and the second torque target value. The vehicle state amount is estimated based on the first torque target value on which the lag processing has been performed and the second torque target value..
Nissan Motor Co., Ltd.


05/07/15
20150123869 

Low profile, antenna array for an rfid reader and making same


An antenna array, especially for use with a radio frequency identification reader, includes a ground plane and a pair of concentric, first and second, circular elements mounted at an elevation relative to the ground plane. First ports are arranged along the perimeter of the first element, and second ports are arranged along the perimeter of the second element.
Motorola Solutions, Inc


05/07/15
20150123868 

Compact, multi-port, mimo antenna with high port isolation and low pattern correlation and making same


An antenna includes a ground support, an electrically conductive, endless element mounted at a distance relative to the ground support, and a trio of ports arranged along the endless element for conveying radio frequency signals in an operating band of frequencies. The antenna is compact and has high port isolation and low pattern correlation due to successively spacing the ports apart along the endless element by a spacing of one-half of a guided wavelength at a center frequency of the operating band..
Motorola Solutions, Inc.


05/07/15
20150123584 

Method and control system for suppression of vibration


A method for suppression of vibration includes: adjusting a center frequency of a band-pass filter, and subjecting a to-be-detected signal to processing by the band-pass filter to result in a bandpass-filtered signal; performing signal processing upon the bandpass-filtered signal to obtain a converted result; determining whether a scanning process is completed, and repeating the previous two steps when a result is negative to obtain plural converted results; determining a maximum value among the converted results, and determining the corresponding center frequency to serve as an interference frequency; and setting the interference frequency as an operating frequency of a notch filter.. .
Lite-on Technology Corp.


04/23/15
20150109174 

Wearable communication device


A wearable communication device including a carrier, a ground plane and a coaxial cable is provided. The carrier includes an insulation portion.
Acer Incorporated


04/09/15
20150098398 

Overlapping sub-channels in a network


In a network, a first network station (61) communicates with a second network station (65) using a first channel (45) from a plurality of channels. The first channel (45) has a central frequency (46).

04/02/15
20150094586 

Ultrasound diagnosis apparatus


An ultrasound diagnosis apparatus according to an embodiment includes a receiving unit and a changing unit. The receiving unit outputs an ultrasound received signal.
Toshiba Medical Systems Corporation


04/02/15
20150094078 

Supplemental maximum power reduction for operation in restricted configurations


In one embodiment, the present disclosure includes a method for reducing out of band emissions. In one embodiment, the method comprises receiving a network signal value from a network, and reducing a transmission signal power on the basis of the network signal value, a center frequency of a transmitting channel, a number of allocated resource blocks, and a location of the allocated resource blocks within the channel..
Qualcomm Incorporated


04/02/15
20150091745 

Sampling/quantization converters


Provided are, among other things, systems, apparatuses, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. One such apparatus includes an input line for accepting an input signal that is continuous in time and continuously variable, multiple processing branches coupled to the input line, and an adder coupled to outputs of the processing branches.
Syntropy Systems, Llc


04/02/15
20150091659 

Atomic oscillator, electronic apparatus, moving object, and manufacturing atomic oscillator


An atomic oscillator includes a gas cell, a semiconductor laser, and a frequency modulation signal generator generating a frequency modulation signal causing the semiconductor laser to generate frequency-modulated light including a first-order sideband light pair causing an electromagnetically induced transparency phenomenon in metal atoms. When a modulation level of frequency modulation changes from low to high, a modulation level at a time when the first-order sideband light is maximized for the first time is represented as m1, a modulation level at a time when intensity of light with a center frequency becomes equal to or higher than intensity of the first-order sideband light for the first time after decreasing to be lower than the intensity of the first-order sideband light for the first time is represented as m2, and intensity of the frequency modulation signal is set such that the modulation level is higher than m1 and lower than m2..
Seiko Epson Corporation


03/26/15
20150087976 

Shear wave estimation from analytic data


Shear wave characteristics are estimated from analytic data. Measures of displacement are converted into complex representations.
Siemens Medical Solutions Usa, Inc.


03/26/15
20150083714 

Wide band choke design for suppressing electromagnetic leakage in microwave ovens


A microwave oven that consist of a cooking chamber, a door for opening and closing the chamber, the e-type choke structure that filter the electromagnetic leakage is placed inside the door frame and a transparent glass surface covering this structure. The e-type choke on the door has two parallel cavities, a periodic prism array that seperate the cavities and periodic slots on the outer side walls of the cavities.
Tubitak


03/19/15
20150078483 

Apparatus and fast local oscillator re-tune for residual side band reduction


Various aspects of the present disclosure are directed to apparatuses and methods that can mitigate the undesirable effects of residual side band (rsb) signal by actively re-tuning the local oscillator of a transmitter to be at or near the center frequency of the carrier. Other aspects, embodiments, and features are also claimed and described..
Qualcomm Incorporated


03/19/15
20150078313 

Base station, terminal, band allocation method, and downlink data communication method


Provided are a base station, a terminal, a band allocation method, and a downlink data communication method with which bands can be efficiently allocated. In a base station in which a plurality of unit bands can be allocated to a single communication, when a data receiver acquires terminal capability information transmitted by a terminal in the initial access unit band and the bandwidth available for communication indicated by the terminal capability information can accommodate a plurality of unit bands, a unit band group which includes the initial access unit band as well as the unit bands adjacent thereto is allocated to the terminal, and a communication band movement indication, which indicates the movement of the center frequency in the communication band of the terminal toward the center frequency in the unit band group, is transmitted to the terminal using the initial access unit band..
Panasonic Intellectual Property Corporation Of America




Center Frequency topics: Center Frequency, Frequency Band, Magnetic Field, Electrostatic Discharge, Amplifier Device, Data Packet, Processing Device, Signal Processing, Reproduction, Computer Program, Communication System, Modulation, Channel Op, Extensions, Transducer

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