Signal Selection Based On Frequency (e.g., Tuning) Patents (Class 455/150.1)
  • Patent number: 10340967
    Abstract: A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: July 2, 2019
    Assignee: Apple Inc.
    Inventors: Xinping Zeng, Mohit Narang, Peter M. Agboh, Vusthla Sunil Reddy
  • Patent number: 10277344
    Abstract: A method for populating a plurality of radio stations on a user device, the method includes receiving the plurality of radio stations, including a radio station signal type, receiving a broadcast area for each of the plurality of radio stations, receiving a request for radio service from the user device, the request for radio service comprising a location of the user device, a user device signal threshold, and a user device antenna capability, wherein the user device antenna capability comprises at least one signal type, calculating a plurality of user device ranges for each of the plurality of radio stations, determining, a plurality of in-range radio stations, filtering, the plurality of in-range radio stations based at least in part on the user device signal threshold, further filtering the plurality of in-range radio stations based at least in part on the user device antenna capability, and transmitting the plurality of in-range radio stations, and related content for the each of the plurality of in-range
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: April 30, 2019
    Assignee: TagStation, LLC
    Inventors: Ben Husmann, Paul Brenner
  • Patent number: 10236836
    Abstract: Methods and devices for tuning a configurable amplifier of a multi-band RF front-end stage based on a setting of a band switch are described. A lookup table provided with the configurable amplifier is used to map configuration control data of the band switch to configuration control data of the configurable amplifier. The configurable amplifier can be part of a transmit path or a receive path of the multi-band RF front-end stage.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 19, 2019
    Assignee: pSemi Corporation
    Inventors: Joseph Golat, David Kovac, Tero Tapio Ranta
  • Patent number: 10142866
    Abstract: In a case where testing of uplink carrier aggregation that is a frequency arrangement in which a primary component carrier and a secondary component carrier are contiguous is performed, a control unit 15 causes a call processing unit 12 to configure a transmission signal of a mobile terminal 2 in such a manner that the transmission signal satisfies a prescribed condition for user data transmission, and causes a wireless signal measurement unit 13 to detect a local oscillation frequency from a band that includes a frequency band in which a primary component carrier and a secondary component carrier are contiguous, using a reception signal that satisfies the prescribed condition for user data transmission.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 27, 2018
    Assignee: ANRITSU CORPORATION
    Inventors: Takayuki Awano, Yoshitaka Kihara, Naoki Inoue, Paulo-Jessie Morales
  • Patent number: 10063997
    Abstract: Positioning user equipment served by a base station in a wireless communication system is disclosed. The method comprises obtaining a timing value used by the user equipment for timing adjustment of uplink signal transmission and a timing bias used for adjusting the timing value. The method also comprises adjusting the timing value based on the timing bias. The method further comprises determining the position of the user equipment based on the adjusted timing value, wherein the timing bias is associated with at least one difference between at least one timing value obtained from at least one previous user equipment served by the base station and at least one timing value obtained from the base station with respect to the at least one previous user equipment. By means of the method and device, the positioning of the user equipment can be accurately achieved and less overhead could be incurred.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: August 28, 2018
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Yang Zhang, Åke Busin, Di Shu
  • Patent number: 10057862
    Abstract: An apparatus and method for transmitting a power headroom report in a communication system supporting multi-carriers are disclosed, by which a user equipment is enabled to transmit the power headroom report. According to the present invention, a user equipment calculates a power headroom for each of at least one activated serving cell using a maximum transmission power of the user equipment for each of at least one activated serving cell and transmits the power headroom report including the power headroom for each of the at least one activated serving cell and the maximum transmission power of the user equipment for each of the at least one activated serving cell to a base station. In this case, the power headroom includes an information on power status of the user equipment for each of the at least one activated serving cell.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: August 21, 2018
    Assignee: LG Electronics Inc.
    Inventors: Dongcheol Kim, Hangyu Cho, Yeonghyeon Kwon, Jaehoon Chung
  • Patent number: 9912459
    Abstract: A method and apparatus for receiving control channel resources of a relay by the relay is provided. The method includes receiving resource information including a resource block assignment information related to resource blocks allocated to the relay; and receiving control channel according to the resource information.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 6, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung Ju Ji, Joon Young Cho
  • Patent number: 9887788
    Abstract: The present invention relates to a method and system for implementing a large area and continuous coverage of programs in a digital audio broadcasting, wherein, part of carrier frequencies are set as common carrier frequencies, and other carrier frequencies are set as service carrier frequencies; all of the common carrier frequencies are combined together to achieve a seamless coverage for the large area; a transmitting end transmits a common frequency point identifier and a program information list on the common carrier frequencies, and transmits digital broadcasting programs on the service carrier frequencies; a receiving end identifies the common carrier frequency based on the common frequency point identifier and receives the digital broadcasting program on the common carrier frequencies; for a specific program desired to be received, all the carrier frequencies on broadcasting of the program are searched based on the received program information list, and the carrier frequency with best signal quality is
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: February 6, 2018
    Assignees: CHINA RADIO INTERNATIONAL, BROADEASE TECHNOLOGIES CO., LTD., BEIJING CRI-TECH RADIO AND TELEVISION TECHNOLOGIES CO., LTD.
    Inventors: Lian Wang, Yi Guan, Min Wu, Xinhong Xu, Xiaowei Cao, Hongqi Jiang, Xiaoge Huang, Xiaoning Feng
  • Patent number: 9800360
    Abstract: One or more embodiments of techniques or systems for content management are provided herein. In one or more embodiments, a user may preconfigure a device with preset stations or favorite stations, such as via an application on the device. The device may be utilized to synchronize a vehicle with the preset stations or favorite stations. In one or more embodiments, merely preset stations may be accessible on the vehicle during some scenarios to promote safe driving. For example, in such scenarios, merely the preset stations may be marked or defined as a favorite. In one or more embodiments, presets or favorites may be presented or organized based on characteristics of a user or other attributes, such as the time of day. In this manner, content management may be provided while promoting safe driving.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: October 24, 2017
    Assignee: Honda Motor Co., Ltd.
    Inventor: Hajime Yamada
  • Patent number: 9748917
    Abstract: A stray capacitance is generated between an antenna element and a ground electrode. A capacitance detection circuit detects the stray capacitance. An antenna matching circuit, is provided along a wireless communication signal path, which is a transmission path between the antenna element and a feeder circuit. A feedback control circuit transmits a control signal to the variable matching circuit on the basis of a detection result of the capacitance detection circuit in accordance with the stray capacitance. The capacitance detection circuit includes a constant current source and a timing circuit to measure the time taken to charge the antenna from the constant current source and for the voltage to reach a predetermined voltage.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: August 29, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shoji Nagumo, Masashi Nakazato, Motoyasu Nakao, Yuji Shintomi
  • Patent number: 9722641
    Abstract: A semiconductor device (10) includes a transmitting circuit (12) that converts transmission data into a transmission signal with a specified frequency, an amplifier (13) that amplifies a power of the transmission signal, a matching circuit (14) that converts the transmission signal from a balanced signal to an unbalanced signal, and a filter circuit (14) that restricts a frequency band of the transmission signal. The matching circuit includes a primary inductor and a secondary indictor, the filter circuit includes an inductor for a filter, and the primary inductor, the secondary indictor and the inductor for a filter are wound substantially concentrically on one plane.
    Type: Grant
    Filed: February 6, 2016
    Date of Patent: August 1, 2017
    Assignee: Renesas Electronics Corporation
    Inventor: Noriaki Matsuno
  • Patent number: 9565288
    Abstract: The communication device comprising a video data transfer implementer, a 1st device remotely controlling implementer, a 2nd device remotely controlling implementer, and an email data transfer implementer.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: February 7, 2017
    Inventor: Iwao Fujisaki
  • Patent number: 9219512
    Abstract: In one form, an integrated receiver includes a tracking bandpass filter, a tunable lowpass filter, and a mixer formed on a single integrated circuit chip. The tracking bandpass filter has an input for receiving a radio frequency (RF) input signal, and an output, and comprises a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor. The integrated inductor comprises a plurality of windings formed in a plurality of metal layers. The tunable lowpass filter has an input coupled to the output of the tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal. The mixer has a signal input coupled to the output of the tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: December 22, 2015
    Assignee: SILICON LABORATORIES INC.
    Inventors: Ramin Khoini-Poorfard, Alessandro Piovaccari, Aslamali A. Rafi, Mustafa H. Koroglu, David S. Trager, Abdulkerim L. Coban
  • Patent number: 9136893
    Abstract: A receiver includes a local signal generator, a power phase adjuster, and a frequency converter so as to perform frequency conversion on signals included in a plurality of radio frequency bands. The local signal generator supplies a plurality of local signals. The power phase adjuster adjusts local signals in terms of signal power or relative phases. The frequency converter performs frequency conversion on radio frequency bands by use of local signals adjusted with the power phase adjuster, thus sorting them in a desired frequency range.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: September 15, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takana Kaho, Yo Yamaguchi, Hiroyuki Shiba, Doohwan Lee, Takayuki Yamada, Kazunori Akabane, Kazuhiro Uehara
  • Patent number: 9112450
    Abstract: A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 comprises a frequency dependent load impedance, the filter having band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: August 18, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Lars Sundström, Sven Mattisson
  • Patent number: 9106867
    Abstract: An apparatus includes a splitter to receive a radio frequency (RF) signal and to provide the RF signal to multiple channels of a tuner. Each channel may include an amplifier to amplify the RF signal, a mixer to downconvert the amplified RF signal to a second frequency signal using a local oscillator (LO) signal, where each of the channels is configured to receive a different LO signal, a filter to filter the downconverted second frequency signal, and a digitizer to digitize the downconverted second frequency signal. A clock generation circuit has multiple interpolative dividers and a frequency synthesizer to generate a reference clock signal. Each of the interpolative dividers is configured to receive the reference clock signal, generate a corresponding LO signal, and provide the corresponding LO signal to the mixer of at least one of the channels.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: August 11, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Mustafa H. Koroglu, Abdulkerim L. Coban
  • Patent number: 9042850
    Abstract: A mobile radio receiver for a vehicle includes a tuner front-end section, a location data port for receiving tuner location data, a sensor port for receiving sensor signal measurement data from at least one vehicle sensor, a tuner front-end section parameter server port for sending the tuner location data, the sensor signal measurement data for receiving a set of tuner front-end section parameter data, and a data processing unit. The data processing unit is operably connected to the tuner front-end section, the location data port, the sensor port, and the tuner front-end section parameter server port. The mobile radio receiver provides an operational mode, a checking mode, a tuner parameter retrieval mode, and a tuner parameter application mode.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 26, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Wei Ming Dan Chia, Brian Sunil Nicholas Fernandes, Yinn Sinn Tang, Min Tak Lee, Ye Yuan, Syaiful Bakhri
  • Patent number: 9026072
    Abstract: A receiver can extract digital data from wireless radio frequency signal. The digital data contains at least two sets of compressed digital audio data each associated with a different set of audio program. One set of compressed digital audio data is delivered in a first frequency band and the other set in a second frequency band. One of the sets is stored in a memory system and the remaining set is not stored in the memory system. A user can select one of the sets of compressed digital audio data for decompression and then conversion to analog audio signal.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: May 5, 2015
    Inventor: Hark C Chan
  • Publication number: 20150094005
    Abstract: A method, system, media, and apparatus are directed to radio recording. Radio stations are simultaneously recorded based on a radio parameter including a processing parameter, a memory usage or allocation, a recording status, or the like. The radio parameter is adapted for an individual station, some radio stations, or all radio stations. The processing parameter is adapted based on a processor usage. The memory usage is adapted based on a memory requirement of a station being recorded. A station may be suspended from recording based on a loss of a signal and resumed based on a resumption of the signal. An access to a radio content recorded while a signal was available may be provided, if the signal is unavailable. The plurality of stations may be prioritized.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Applicant: 3D RADIO LLC
    Inventor: Michael D. ELLIS
  • Patent number: 8995941
    Abstract: Techniques are described for use in scanning by a mobile device which is configured to communicate in compliance with regulatory requirements of a regulatory domain based on country information communicated in one or more beacon frames. The mobile device scans a radio frequency (RF) band using passive scan operations on RF channels having passive scan status, where each passive scan operation involves monitoring an RF channel in attempt to decode a beacon frame. When the mobile device successfully decodes, on an RF channel for a passive scan operation, an information frame of a type that is different from a beacon frame, it changes the passive scan status of the RF channel to an active scan status and performs an active scan operation on the RF channel.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: March 31, 2015
    Assignee: BlackBerry Limited
    Inventors: Leonardo Jose Silva Salomone, Michael Peter Montemurro
  • Patent number: 8977315
    Abstract: Certain aspects of a method and system for a compact and power efficient local oscillator generation architecture in multi-standard systems may include selection of an input frequency range of operation at a voltage controlled oscillator (VCO) based on a particular wireless band of operation. An image rejection mixer may be enabled to mix a plurality of generated local oscillator signals. An inductive buffer may be enabled to generate an output signal by buffering the mixed plurality of generated local oscillator signals in a single backend stage. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing an RC-CR quadrature network.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 10, 2015
    Assignee: Broadcom Corporation
    Inventors: Razieh Roufoogaran, Qiang Li, Arya Behzad
  • Patent number: 8948715
    Abstract: A mobile radio receiver for a vehicle. The mobile radio receiver includes a tuner front-end section, a location data port, a sensor port, and a data processing unit. The location data port is used for receiving tuner location data. The sensor port is used for receiving one or more sensor signals. The data processing unit is operably connected with the tuner front-end section, with the location data port, and with the sensor port. The data processing unit further comprises predetermined tuner location data and predetermined relationship data sets for determining a set of tuner front-end section parameters based on the sensor signals. The mobile radio receiver provides an operational mode, a checking mode, a tuner parameter adjustment mode, and a tuner parameter application mode.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: February 3, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Syaiful Bakhri, Wei Ming Dan Chia, Brian Sunil Nicholas Fernandes, Mintak Lee, Yinn Sinn Tang, Ye Yuan
  • Patent number: 8931017
    Abstract: A channel scanning method for Digital Video Broadcasting-Satellite (DVB-S) signals is provided. The method includes: scanning a radio frequency (RF) signal according to a normal frequency step; when the Nth channel is detected, obtaining a difference between a low boundary of an Nth channel and a high boundary of an (N?1)th channel; and, when the difference is within a predetermined bandwidth range, scanning the RF signal between the high boundary of the (N?1)th channel and the low boundary of the Nth channel according to a narrow frequency step. The normal frequency step is greater than the narrow frequency step.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: January 6, 2015
    Assignee: MStar Semiconductor, Inc.
    Inventors: Chu-Hsin Chang, Kai-Wen Cheng, Yi-Ying Liao, Tung-Sheng Lin, Tai-Lai Tung
  • Patent number: 8918070
    Abstract: Apparatus and methods are disclosed related to tuning a resonant frequency of an LC circuit. In some implementations, the LC circuit can be embodied in a low noise amplifier (LNA) of a receiver. The receiver can include a component configured to generate an indicator of received signal strength indication (RSSI) of a radio frequency (RF) signal received by the receiver. A control block can adjust the resonant frequency of the LC circuit based at least in part on the indicator of RSSI. As another example, the receiver can include an oscillator, such as a VCO, separate from the LC circuit that can be used to tune the resonant frequency of the LC circuit. These apparatus can compensate for variation in a zero imaginary component of an impedance across the LC circuit.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: December 23, 2014
    Assignee: Analog Devices, Inc.
    Inventor: Hyman Shanan
  • Patent number: 8913975
    Abstract: An adaptive stepped gain amplifier, for example for use in broadband receivers, has a step size which is dynamically compensated (for each received frequency) to cope with step error caused by frequency dependence of the amplifier performance.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: December 16, 2014
    Assignee: NXP B.V.
    Inventors: Fabien Laurent Michel Deforeit, Sebastien Robert, Sebastien Amiot
  • Patent number: 8892052
    Abstract: In various embodiments, a method for determining whether a signal includes a wanted signal may be provided. The method may include determining a frequency at which the signal has a signal energy above a first pre-defined signal energy threshold and determining whether the signal includes a wanted signal, based on whether the signal has a signal energy above a second pre-defined signal energy threshold in a pre-defined frequency range in a frequency neighborhood of the determined frequency.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 18, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Yonghong Zeng, Ser Wah Oh, Tran Phuoc Cuong Le, Weiqiang Zhang
  • Publication number: 20140315507
    Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining position and timing information from a satellite positioning system; tuning to a frequency channel with GSM transmission; collecting a group of I/Q samples for the length of 12 GSM frames; performing peak detection using at least two peak detectors over the group of samples wherein the found peak values are the locations of synchronization bursts (SCH). For the found peaks, the timing information, carrier-to-noise ratio, in phase and quadrature values are determined. A group of I/Q samples for the length of 12 or 51 GSM frames are collected. From the found SCH, base station identification code BSIC, frame number and Broadcast Control Channel (BCCH) training sequence are determined. BCCHs corresponding to all SCH are decoded; and transmitting base stations identified.
    Type: Application
    Filed: December 18, 2012
    Publication date: October 23, 2014
    Applicant: ANITE FINLAND OY
    Inventor: Steven Thompson
  • Patent number: 8867671
    Abstract: A conversion circuit (20) for converting a complex analog input signal having an in-phase, I, component and a quadrature-phase, Q, component resulting from frequency down conversion of a radio-frequency, RF, signal (XRF) to a frequency band covering 0 Hz into a digital representation is disclosed. It comprises a channel-selection filter unit (40) arranged to filter the complex analog input signal, thereby generating a channel-filtered I and Q components, and one or more processing units (53, 53a-b). Each processing unit comprises four mixers (60-75) for generating a first and a second frequency-translated I component and a first and a second channel-filtered Q component based on two LO signals with equal LO frequency and a 90° mutual phase shift. Furthermore, each processing unit comprises a combiner unit (85, 120) for generating a first, a second, a third, and a fourth combined signal proportional to sums and differences between said frequency translated I and Q components.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: October 21, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Lars Sunström, Roland Strandberg
  • Patent number: 8848112
    Abstract: A fast channel switching method and apparatus for a digital broadcast receiver having a single tuner are disclosed. The fast channel switching method includes setting an ongoing service channel and at least one standby service channel, buffering broadcast data received through the ongoing and standby service channels, outputting the buffered broadcast data of the ongoing service channel, determining whether the ongoing service channel is switched to one of the standby service channels, outputting, if the ongoing service channel is switched to one of the standby service channels, the buffered broadcast data of the switched standby service channel and resetting the ongoing and standby service channels.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Wook Seo, Wei Jin Park, Jong Kerl Lee
  • Patent number: 8842787
    Abstract: A receiver is set forth that includes a tuner circuit and a converter circuit. The tuner circuit provides an analog signal corresponding to a modulated signal that is received on a selected channel. The converter circuit includes a sample clock that is used to convert the analog signal to a digital signal at a conversion rate corresponding to the frequency of the sample clock. The sample clock is selectable between at least two different clock frequencies.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: September 23, 2014
    Assignee: Marvell International Ltd.
    Inventors: King Chun Tsai, Patrick Clement, David Cousinard
  • Patent number: 8811911
    Abstract: A radio-frequency (RF) processing device, for a wireless communication device, is disclosed. The RF processing device comprises an antenna, an RF-signal processing module, a controller, for generating a control signal according to a band switching signal, and a matching adjustment module for adjusting an impedance between the antenna and the RF-signal processing module according to the control signal.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 19, 2014
    Assignee: HTC Corporation
    Inventors: Chih-Chin Su, Chung-Chi Lai, Chien-Ting Ho, Wan-Ming Chen
  • Patent number: 8805310
    Abstract: A system for searching stored audio data is described. The system includes a memory configured to store audio data received from a radio receiver and a processing circuit. The processing circuit is configured to receive a search pattern, search the stored audio data for the search pattern, and provide audio data based on the search.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: August 12, 2014
    Assignee: Johnson Controls Technology Company
    Inventors: David A. Blaker, Thomas R. Olson, Brian L. Douthitt
  • Patent number: 8805311
    Abstract: [Problem] To provide a band stop filter unit, a mobile communication terminal test system, and a mobile communication terminal test method that are flexibly adaptable to the addition/change of a specification in a frequency band for mobile communication. [Means for Resolution] There are provided a first variable filter (102) and a second variable filter (103) which are connected to each other in series, respectively have YIG elements to vary tuning frequencies (f1 and f2), and attenuate the desired signal within predetermined bandwidths (?BW1 and ?BW2) having centers of the tuning frequencies. The tuning frequency (f1) and the tuning frequency (f2) are controlled to be the same as each other or around each other when the desired signal is located at a low frequency band side.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: August 12, 2014
    Assignee: Anritsu Corporation
    Inventors: Tomohiko Maruo, Hiroshi Watanabe, Seiichi Ishizaki
  • Patent number: 8787855
    Abstract: A mechanism for providing tuning values to an RF radio module that, does not have memory for storing tuning values. Tuning values are requested from a server maintaining tuning values. The request is made by a device including the RF radio module for which the tuning values are requested. Requested tuning values are then received in accordance with the request. The received tuning values are stored in to a memory of the device including the RF radio module and applied to the RF radio module.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: July 22, 2014
    Assignee: Broadcom Corporation
    Inventors: Seppo Rousu, Juha Valtanen
  • Patent number: 8744386
    Abstract: A method of tuning a receiver includes: providing a tunable Low Noise Amplifier (LNA) having a plurality of LNAs and a plurality of LC loads coupled to the plurality of LNAs; selecting a desired LNA and a LC load corresponding to the desired LNA; isolating the desired LNA from the selected LC load; generating a local oscillation (LO) signal; routing the LO signal to the output of the tunable LNA to generate a filtered LO signal; determining a first signal power level of the filtered LO signal; changing the capacitance in the selected LC load and determining a second signal power level of the filtered LO signal; comparing the first filtered signal power level to the second filtered signal power level; and according to the comparison result, determining whether or not to adjust the capacitance in the selected LC load.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: June 3, 2014
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventor: Chee-Lee Heng
  • Publication number: 20140148110
    Abstract: Systems and methods are provided for accessing broadcast media items and segments from non-broadcast sources. In response to detecting that a user has not finished listening to a broadcast segment (e.g., a radio segment), an electronic device can automatically identify and access an alternate, non-broadcast source for the same broadcast segment (e.g., a corresponding podcast episode). Using the electronic device, a user can play back the segment from the non-broadcast source, starting playback at the last position of the broadcast segment when the user stopped listening to the broadcast. In some embodiments, the electronic device can update library counts (e.g., play counts and new/not new tags) based on media items and segments played back as part of a media broadcast.
    Type: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: Apple Inc.
    Inventors: Michael Ingrassia, Jeffery Lee
  • Publication number: 20140141737
    Abstract: An anti-jamming system includes a tunable negative jamming signal feedback loop for feedback suppression of a received jamming signal. The system includes a zero IF phase locked loop (PLL) jamming signal receiver having a synchronous demodulator and a phase detector. A VCO is included in the PLL, as well as a phase detector and a loop filter. A replica jamming signal generator includes a tracking modulator with a baseband signal input coupled to an output of a synchronous demodulator in the receiver and a carrier input provided by the VCO. An output of the tracking modulator is negatively fed back to the input of the receiver to suppress the jamming signal in the received input.
    Type: Application
    Filed: November 17, 2012
    Publication date: May 22, 2014
    Inventor: Wolfdietrich Georg KASPERKOVITZ
  • Patent number: 8731111
    Abstract: An apparatus and method for tunable wideband solar radio noise measurement is provided. Accordingly, it is possible to directly measure the absolute flux of solar radio waves in a desired frequency band using a tunable receiver, and accordingly, to protect radio communication broadcasting systems located on the earth from its damage caused due to radio burst, noise and the like.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 20, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Woo Park, Cheol Oh Jeong, Jae Hoon Kim, Jung Hoon Kim
  • Patent number: 8712355
    Abstract: A method, transceiver integrated circuit (IC), and communications device for generating antenna tuning states derived from a pre-established trajectory of tuning states to adjust a detected signal level towards a preset, given value. A tuning state generation (TSG) controller determines whether a detected signal level matches a given value. If the detected signal level does not match the given value, the TSG controller selects an initial preset tuning state from a pre-established trajectory corresponding to a pre-identified operating condition that best matches a current operating condition. The TSG logic forwards the initial preset tuning state to the antenna tuner to trigger impedance transformation. Following generation of the initial preset tuning state, the controller receives an updated detected signal level. If the updated detected signal level fails to match the given value, the controller generates an incremental tuning state that is interpolated between the initial and a final preset tuning states.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: April 29, 2014
    Assignee: Motorola Mobility LLC
    Inventors: Gregory R. Black, William P. Alberth
  • Patent number: 8699984
    Abstract: Systems and methods are provided for adjusting a noise figure in a radio receiver. An example method includes receiving a radio frequency (RF) signal at a RF receiver section. The RF receiver section includes at least one RF receiver element. The RF receiver element is controllable by at least one tuning variable. The RF signal is processed to generate a processed analog signal, which is converted to a digital signal. The digital signal is used to determine a performance parameter. The at least one tuning variable of the at least one RF receiver element is controlled to adjust the noise figure based on the performance parameter. In another aspect of the invention, an example radio receiver is provided. The radio receiver includes a RF receiver section having at least one RF receiver element. A controller determines a performance parameter using the digital signal and controls the at least one tuning variable to adjust the noise figure based on the performance parameter.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: April 15, 2014
    Assignee: CSR Technology Inc.
    Inventors: Armando J. Mendoza, Noshir B. Dubash
  • Patent number: 8699977
    Abstract: A receiver including: an antenna for receiving signals in a plurality of frequency ranges; a plurality of amplifiers, each of the plurality of amplifiers being configured to amplify signals in one of the plurality of frequency ranges; a plurality of receive paths, each of the plurality of receive paths connecting an output of the antenna to an input of one of the plurality of amplifiers, wherein each of the plurality of receive paths includes a power detector for monitoring signal power in the receive path and a switch which can be operated to activate or deactivate the receive path, wherein the switch of each receive path is operable to deactivate the receive path if an overload condition is detected by the power detector of that receive path.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: April 15, 2014
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Daniel Babitch, Joakim Landmark, Behzad Sheikholeslami, Peter Topham
  • Patent number: 8687630
    Abstract: A communication device for transmitting and receiving messages via an emergency notification network. The communication device includes a receiver configured to receive a data packet from a data broadcasting system, a processor operably connected to the receiver and configured to process the data packet, a memory operably connected to the processor and configured to store data, a mesh network transceiver operably connected to the processor and configured to transmit the received data packet via a mesh network to at least a second communication device, and an output device operably connected to the processor and configured to present an alert corresponding to the data packet.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: April 1, 2014
    Assignee: Metis Secure Solutions, LLC
    Inventors: David Hochendoner, Timothy Means, Storm Orion
  • Patent number: 8670077
    Abstract: A method of performing a service scan for available channels across a bandwidth of an input signal, the method comprising the steps of: acquiring a power spectrum of the input signal bandwidth; analyzing the power spectrum to identify a list of candidate channels, each candidate channel being identified by at least a center frequency; processing each of the candidate channels in a receiver unit to extract service information, if present, relating to the candidate channel; and storing the service information for the channel in a memory.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 11, 2014
    Assignee: NXP B.V.
    Inventors: Ewout Brandsma, Klaas de Waal, Konstantinos Doris, Erwin Janssen
  • Publication number: 20140065993
    Abstract: An adaptive stepped gain amplifier, for example for use in broadband receivers, has a step size which is dynamically compensated (for each received frequency) to cope with step error caused by frequency dependence of the amplifier performance.
    Type: Application
    Filed: August 13, 2013
    Publication date: March 6, 2014
    Applicant: NXP B. V.
    Inventors: Fabien Laurent Michel Deforeit, Sebastien Robert, Sebastien Amiot
  • Patent number: 8655263
    Abstract: A method for searching for a broadcast/multicast single frequency network cluster, when a terminal needs to receive the broadcast/multicast service in the broadcast/multicast single frequency network cluster, the terminal synchronizes to a non broadcast/multicast single frequency network cell which is associated with the broadcast/multicast single frequency network cluster; and the terminal searches for the broadcast/multicast single frequency network cluster on the basis of the information indicated by the system information in the non broadcast/multicast single frequency network cell. So that the UE can search for the corresponding MBSFN cluster, and can receive the MBMS service in the searched MBSFN cluster.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: February 18, 2014
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuelong Wang, Yu Ding, Shiyan Ren, Lei Mao
  • Publication number: 20140038535
    Abstract: The purpose of dynamically tuning in dense arrays is to improve power received and signal quality. In traditional phased array the inherent design procedure is to design for good matching over the frequency and scan angle of operation. Typically this is done in the overall design based on a priori knowledge of the frequency, relative phasing and amplitude distribution of all the elements. With this a priori knowledge the design can be done based on known mutual coupling.
    Type: Application
    Filed: January 31, 2013
    Publication date: February 6, 2014
    Applicant: AEREO, INC.
    Inventor: Aereo, Inc.
  • Patent number: 8644532
    Abstract: A method of the present invention includes coordinating tuning to the same channel of a radio band wherein the following steps are performed: tuning to a channel, within a radio band, that uses a side band; receiving control information in the side band of the channel; and processing the received audio information in the channel using the control information.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 4, 2014
    Assignee: Quintic Holdings
    Inventors: Yifeng Zhang, Kou-Hu Tzou, Pengyi Hong, Hangwei Guo
  • Patent number: 8615236
    Abstract: Techniques to dynamically manage wireless connections using feature prioritization are described. For example, a mobile computing device may comprise a connection management module operative to access a list of one or more wireless networks, compare feature set information for the one or more wireless networks, select a wireless network based on the comparison, and initiate a wireless connection using the selected wireless network, wherein the feature set information is contained in the list. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: December 24, 2013
    Assignee: Palm, Inc.
    Inventors: Anand Kashikar, Wen Zhao
  • Patent number: 8611843
    Abstract: A filter package for communications equipment includes two or more filters in die form, each having a different frequency response. A first switch and a second switch are operatively connected to the filters and are configured to select a desired filter for operation in a signal stage of the equipment. The filters are aligned and stacked one over the other in the form of a package having an input terminal that is tied to a common terminal of the first switch, and an output terminal tied to a common terminal of the second switch. When the input and the output terminals of the filter package are connected to corresponding terminals of an intermediate frequency (IF) stage in a communications transceiver, the package can support both narrowband and wideband waveforms defined by the Joint Tactical Radio System (JTRS).
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: December 17, 2013
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Michael S. Vogas
  • Patent number: RE45362
    Abstract: A receiver contains a demodulator system that can extract digital data from wireless radio frequency signal. The digital data contains two sets of compressed digital audio data corresponding to two audio programs. The receiver also contains two decompressors. If a user selects a first audio program, a first compressor is used to decompress a first set of compressed digital audio data. If a user selects a second audio program, a second decompressor is used to decompress a second set of compressed digital audio data. The wireless radio frequency signal can be transmitted using a transmitter.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 3, 2015
    Inventor: Hark C Chan