Convertible To Different Type (e.g., Am To Fm) Patents (Class 455/142)
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Patent number: 12237854Abstract: Circuit and method for inter-symbol and intra-symbol voltage method are disclosed. Herein, a transceiver circuit is configured to determine a voltage target(s) for generating a modulated voltage(s) to amplify a radio frequency (RF) signal modulated in multiple symbols. Specifically, the transceiver circuit will generate multiple voltage targets for any of the symbols to thereby enable intra-symbol voltage modulation when the respective symbol is modulated to carry a selected type of information or generate a single voltage target for any of the symbols to thereby enable inter-symbol voltage modulation when the respective symbol lacks the selected type of information. By dynamically performing inter-symbol and intra-symbol voltage modulation based on the type of information carried in a symbol(s), the modulated voltage can be timely adapted to closely track a time-variant power envelope of the RF signal to thereby avoid potential distortion and protect critical information in the RF signal.Type: GrantFiled: September 19, 2022Date of Patent: February 25, 2025Inventors: Nadim Khlat, James M. Retz, Arthur Nguyen
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Patent number: 12143103Abstract: A multi-coil coupling-type single-pole four-throw (SP4T) switch includes: an input port and first through fourth output ports; a coupled inductor circuit including inductor coils electrically connected with the input port and the first through fourth output ports; and a transistor-based control circuit including control circuits electrically connected with the first through fourth output ports respectively. The transistor-based control circuit is configured for selecting one of the first through fourth output ports to be conducted with the input port based on level signals of the control circuits, and configuring a load of the selected output port by using the inductor coils connected with the first through fourth output ports and the control circuits connected with the others of the first through fourth output ports.Type: GrantFiled: December 21, 2020Date of Patent: November 12, 2024Assignee: XI'AN CREATION KEJI CO., LTD.Inventor: Miao Li
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Patent number: 12040823Abstract: The present disclosure relates to signal sending circuits, signal receiving circuits, electronic apparatus, and base stations. One example circuit includes a signal pre-processing sub-circuit, a digital-to-analog conversion sub-circuit, an intermediate frequency power splitter, K frequency conversion phase-shift sub-circuits, and K antenna elements. An output end of the signal pre-processing sub-circuit is connected to an input end of the digital-to-analog conversion sub-circuit, an output end of the digital-to-analog conversion sub-circuit is connected to an input end of the intermediate frequency power splitter, an output end of the intermediate frequency power splitter is connected to input ends of the K frequency conversion phase-shift sub-circuits, and output ends of the K frequency conversion phase-shift sub-circuits are connected one-to-one to input ends of the K antenna elements.Type: GrantFiled: October 22, 2021Date of Patent: July 16, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Chuanhui Ma, Dong Han, Guolong Huang
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Patent number: 12015960Abstract: Systems and methods for directing a user equipment (UE) to optimal antenna arrays during fallback procedures or handover procedures. The method can include the steps of determining that the UE is connecting to a first network and automatically assigning the UE to a first antenna array having a first multiple input multiple output (MIMO) configuration when the UE is in a data session. Furthermore, the method can include the step of automatically assigning the UE to a second antenna array having a second MIMO configuration when the UE is in a non-data session, such as a voice session. The first MIMO configuration can have a higher number of channels or antennas than the second MIMO configuration.Type: GrantFiled: September 2, 2021Date of Patent: June 18, 2024Assignee: T-Mobile Innovations LLCInventors: Roopesh Kumar Polaganga, Sreekar Marupaduga
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Patent number: 11886263Abstract: A signal re-driving device, a data storage system and a mode control method are provided. The method includes the following steps. A first signal is received via a receiving circuit of the signal re-driving device. An analog signal feature is detected the receiving circuit. A first mode is entered according to the analog signal feature. The first signal is modulated and a second signal is outputted in the first mode. The second signal is sent via a sending circuit of the signal re-driving device. A digital signal feature is detected via the receiving circuit. And, the first mode is switched to a second mode according to the digital signal feature.Type: GrantFiled: August 27, 2021Date of Patent: January 30, 2024Assignee: PHISON ELECTRONICS CORP.Inventors: Po-Jung Chou, Sheng-Wen Chen, Chung-Kuang Chen
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Patent number: 11824572Abstract: A digital filter circuit for processing at least one signal is described. The digital filter circuit includes an input circuit, a first filter sub-circuit, and a second filter sub-circuit. The input circuit is configured to receive at least two real-valued input signals and/or at least one complex-valued input signal. The digital filter circuit has a first configuration that is associated with complex-valued input signals, wherein in the first configuration the first filter sub-circuit is configured to filter a real part of the at least one complex-valued input signal and the second filter sub-circuit is configured to filter an imaginary part of the at least one complex-valued input signal.Type: GrantFiled: February 15, 2022Date of Patent: November 21, 2023Assignee: Rohde & Schwarz GmbH & Co. KGInventor: Manuel Stein
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Patent number: 11714595Abstract: Adapting an audio portion of a video conference includes a presenter providing content for the video conference by delivering live content, prerecorded content, or combining live content with prerecorded content, at least one additional co-presenter provides content for the video conference, and untangling overlapping audio streams of the presenter and the co-presenter by replaying individual audio streams from the presenter and/or the at least one co-presenter or separating the audio streams by diarization. Adapting an audio portion of a video conference may also include recording the presenter to provide a recorded audio stream, using speech-to-text conversion to convert the recorded audio stream to text, correlating the text to the recorded audio stream, retrieving a past portion of the recorded audio stream using a keyword search of the text, and replaying the past portion of the recorded audio stream. The keyword may be entered using a voice recognition system.Type: GrantFiled: June 25, 2021Date of Patent: August 1, 2023Assignee: mmhmm inc.Inventors: Phil Libin, Leonid Kitainik
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Patent number: 11695440Abstract: A wireless receiver (10) includes a down converter module (210) operable to deliver a signal having a signal bandwidth that changes over time, a dynamically controllable filter module (200) having a filter bandwidth and fed by said down converter module (210), and a measurement module (295) operable to at least approximately measure the signal bandwidth, said dynamically controllable filter module (200) responsive to said measurement module (295) to dynamically adjust the filter bandwidth to more nearly match the signal bandwidth as it changes over time, whereby output from said filter module (200) is noise-reduced. Other wireless receivers, electronic circuits, and processes for their operation are disclosed.Type: GrantFiled: November 18, 2021Date of Patent: July 4, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Jaiganesh Balakrishnan
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Patent number: 11626860Abstract: A receiver and associated methods are described. The receiver comprises a first oscillator 14, a second oscillator 16, a controller 18 operable to control frequencies to which the first and second oscillators are tuned, and a discrimination circuit 24 operable to receive and monitor transmitted signals; wherein the discrimination circuit is configured to receive a signal at a first transmission frequency determined based on a first tuned frequency to which the first oscillator is tuned, and to determine, in a capture time period, whether data is being transmitted at the first transmission frequency; wherein the controller is configured to tune, in a tuning time period, the second oscillator to a second tuned frequency; and wherein the tuning time period is shorter than the capture time period.Type: GrantFiled: January 4, 2019Date of Patent: April 11, 2023Assignee: KIRINTEC LIMITEDInventors: Paul Hill, Lee Michael Pomeroy, Richard Harrison
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Patent number: 11539502Abstract: Examples described herein include systems and methods which include wireless devices and systems with examples of cross correlation including symbols indicative of radio frequency (RF) energy. An electronic device including a statistic calculator may be configured to calculate a statistic including the cross-correlation of the symbols. The electronic device may include a comparator configured to provide a signal indicative of a presence or absence of a wireless communication signal in the particular portion of the wireless spectrum based on a comparison of the statistic with a threshold. A decoder/precoder may be configured to receive the signal indicative of the presence or absence of the wireless communication signal and to decode the symbols responsive to a signal indicative of the presence of the wireless communication signal. Examples of systems and methods described herein may facilitate the processing of data for wireless communications in a power-efficient and time-efficient manner.Type: GrantFiled: November 5, 2020Date of Patent: December 27, 2022Assignee: Micron Technology, Inc.Inventors: Fa-Long Luo, Tamara Schmitz, Jeremy Chritz, Jaime Cummins
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Patent number: 11463287Abstract: Disclosed are methods and devices for determining a modulation type of a signal using a circuit arrangement. The power is detected for a signal received at the circuit arrangement. This is done by means of N measured values in a measurement window. Based upon the detected power and one or more reference values or reference patterns, e.g., by means of a comparison or a correlation, the modulation type of the signal can be determined from a plurality of modulation types. Disclosed are also methods and devices for configuring an amplification unit of a circuit arrangement, in which the power of a received signal is detected by means of N measured values in a measurement window, and the amplification unit is configured based upon the detected power and one or more reference values or reference patterns.Type: GrantFiled: November 6, 2018Date of Patent: October 4, 2022Assignee: MOLEX CVS DABENDORF GMBHInventors: Lars Lehmann, Helmut Kautge, Marcus Weigelt
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Patent number: 11346921Abstract: A radio frequency circuit includes an input terminal configured to receive a reception signal from an antenna; a reception signal path coupled to the input terminal and including a mixer and an analog-to-digital converter (ADC), where the ADC generates a digital signal representing an input signal to the ADC; a test signal generator configured to generate a test signal that is injected into the reception signal path while the reception signal propagates along the reception signal path; a digital signal processor configured to receive the digital signal from a digital portion of the reception signal path, and analyze a frequency response of the digital signal; and a subtractor coupled to the digital portion of the reception signal path, the subtractor configured to remove test frequency components resulting from an injection of the test signal into the reception signal path from the digital signal.Type: GrantFiled: December 18, 2019Date of Patent: May 31, 2022Inventor: Grigory Itkin
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Patent number: 11120234Abstract: Systems and methods to selectively attach and control antennas via diodes. In one embodiment, a system includes: a reader having a plurality of reader antennas of different polarizations to transmit radio frequency signals; and at least one radio frequency device. The radio frequency device includes: a plurality of tag antennas of different polarizations; a plurality of diodes coupled to the plurality of tag antennas respectively; a receiver coupled to the plurality of diodes to receive the radio frequency signals from the tag antennas when the diodes are forward biased; and a set of one or more current controllers coupled to the plurality of diodes. In a receiving mode the controllers selectively forward bias the diodes to receive the signals from the reader. In a transmitting mode the controllers selectively change the state of the tag antennas to transmit data via backscattering the radio frequency signals.Type: GrantFiled: April 13, 2020Date of Patent: September 14, 2021Assignee: Micron Technology, Inc.Inventor: John R. Tuttle
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Patent number: 11105891Abstract: Multi-input downconversion mixers, systems, and methods are provided with input switching in the intermediate frequency or baseband domain. One illustrative mixer embodiment includes: multiple differential pairs of transistors and multiple pairs of switches. Each differential transistor pair has their bases or gates driven by a differential reference signal, their emitters or sources connected to a common node having a current or voltage driven based on a respective one of multiple receive signals, and their collectors or drains providing a product of the differential reference signal with the respective one of the multiple receive signals. Each of the switch pairs selectively couples differential output nodes to the collectors or drains of a respective one of the multiple differential pairs, enabling the differential output nodes to convey an output signal that is a sum of products from selected ones of the multiple differential pairs.Type: GrantFiled: September 26, 2019Date of Patent: August 31, 2021Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Benny Sheinman
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Patent number: 11063570Abstract: An integrated isolator circuit for isolating receiver and transmitter in a Time-Division Duplex transceiver is disclosed. The integrated isolator circuit comprises a first node, a second node and a third node. The integrated isolator circuit further comprises a first capacitor connected in series with a first switch and connected between the first and second nodes. The integrated isolator circuit further comprises a first inductor connected between the first and second nodes and a second capacitor connected between the second node and the third node. The first switch has an on state and an off state, and the integrated isolator circuit is configured to have a different impedance at a certain operating frequency by controlling the state of the first switch.Type: GrantFiled: February 10, 2017Date of Patent: July 13, 2021Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventor: Imad ud Din
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Patent number: 10673122Abstract: A communication apparatus for a vehicle is disclosed. The apparatus comprises a window comprising a metallic coating and forming an interior surface enclosing a portion of an interior compartment of the vehicle. The apparatus further comprises a wireless communication circuit comprising an antenna configured to communicate via a radio frequency. The antenna comprises an electrical conductor and a plurality of elongated openings formed in the metallic coating. The electrical conductor extends in a first direction and is in conductive connection with the communication circuit. The electrical conductor is disposed proximate to the interior surface of the window. The elongated openings extend in a second direction substantially perpendicular to the first direction. The elongated openings in combination with the electrical conductor provide for an improved transmission of the radio frequency.Type: GrantFiled: October 19, 2018Date of Patent: June 2, 2020Assignee: GENTEX CORPORATIONInventors: Benjamin P. Appold, Douglas C. Papay
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Patent number: 10159029Abstract: A communication system facilitates a voice communication session for a wireless communication device. A Long Term Evolution (LTE) network exchanges Voice over LTE (VoLTE) communications with the wireless communication device for the voice communication session and determines LTE packet loss metrics for the voice communication session. The LTE network transfers the voice communication session to a Wireless Fidelity (WIFI) network. The WIFI network exchanges Voice over WIFI (VoWIFI) communications with the wireless communication device for the voice communication session and determines WIFI packet loss metrics for the voice communication session. A network controller compares the LTE packet loss metrics with the WIFI packet loss metrics to determine a packet loss configuration for the WIFI network. The network controller transfers a packet loss instruction to the WIFI network.Type: GrantFiled: September 8, 2017Date of Patent: December 18, 2018Assignee: Sprint Communications Company L.P.Inventors: Amar Nath Ray, James Patrick Sisul, Tracy Lee Nelson
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Patent number: 9954628Abstract: An audio/video (A/V) hub that determines an environment of a portable electronic device is described. In particular, the A/V hub may identify the environment based on performance information about communication between the portable electronic device and receiver devices (which was received from the receiver devices), and a history of behavior of an individual associated with the portable electronic device and the A/V hub. Alternatively, the A/V hub may identify the environment based on performance information about communication between the portable electronic device and the A/V hub and the portable electronic device and another A/V hub (which was received from the portable electronic device and/or the other A/V hub), and a history of behavior of an individual associated with the portable electronic device and the A/V hub. Based on the determination, the A/V hub provides an instruction to power on an A/V display device in the environment.Type: GrantFiled: November 19, 2017Date of Patent: April 24, 2018Assignee: Eva Automation, Inc.Inventor: Gaylord Yu
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Patent number: 9831962Abstract: An audio/video (A/V) hub that determines an environment of a portable electronic device is described. In particular, the A/V hub may identify the environment based on performance information about communication between the portable electronic device and receiver devices (which was received from the receiver devices), and a history of behavior of an individual associated with the portable electronic device and the A/V hub. Alternatively, the A/V hub may identify the environment based on performance information about communication between the portable electronic device and the A/V hub and the portable electronic device and another A/V hub (which was received from the portable electronic device and/or the other A/V hub), and a history of behavior of an individual associated with the portable electronic device and the A/V hub. Based on the determination, the A/V hub provides an instruction to power on an A/V display device in the environment.Type: GrantFiled: May 29, 2017Date of Patent: November 28, 2017Assignee: EVA Automation, Inc.Inventor: Gaylord Yu
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Patent number: 9190957Abstract: In an embodiment, an apparatus includes a first signal path to receive and process a radio frequency (RF) signal of a first band and which has a first programmable digitizer to convert the RF signal of the first band into a digitized signal without downconversion. In addition, the apparatus further includes a second signal path to receive and process an RF signal of a second band, where at least portions of one or more of the paths may be shared during operation in the different bands.Type: GrantFiled: June 18, 2013Date of Patent: November 17, 2015Assignee: Silicon Laboratories Inc.Inventors: Mark May, Carlos Briseno-Vidrios, Junsong Li
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Patent number: 9100682Abstract: Disclosed herein is a terrestrial broadcasting receiving module including: an antenna receiving a wireless signal; a distributing unit distributing and outputting the wireless signal into a wireless signal including a VHF band signal and a wireless signal including a UHF band signal; a VHF processing unit generating and outputting a VHF intermediate frequency signal from the wireless signal including the VHF band signal; a UHF processing unit generating and outputting a UHF intermediate frequency signal from the wireless signal including the UHF band signal; and a demodulating unit demodulating the VHF intermediate frequency signal output from the VHF processing unit and the UHF intermediate frequency signal output from the UHF processing unit. Therefore, a manufacturing cost may be reduced, switching loss may be prevented.Type: GrantFiled: August 30, 2011Date of Patent: August 4, 2015Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Yong Bum Lee, Jong Lae Kim
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Patent number: 9048547Abstract: Systems and methods are disclosed for shared AM/FM air loop antennas that may be advantageously implemented to provide a AM/FM receiver system with a single common air loop antenna for receiving both AM and FM channels, thus eliminating the need for additional materials and electronics associated with provision of a separate FM pigtail antenna and FM antenna jack for connection of same. The shared AM/FM air loop antennas may be connected to a radio device having antenna connections.Type: GrantFiled: June 11, 2013Date of Patent: June 2, 2015Assignee: Silicon Laboratories Inc.Inventors: Ligang Zhang, Chengzhou Lin
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Patent number: 8918051Abstract: A mobile device includes a first interface module, a second interface module, and a control module. The first interface module is configured to interface the mobile device to a first wireless network and to receive data from a transmitting device via the first wireless network. The second interface module is configured to interface the mobile device to a second wireless network. The control module is configured to determine based on the data received when to switch a link to the transmitting device from the first wireless network to the second wireless network. The control module is further configured to transmit a message that informs the transmitting device not to transmit the data to the mobile device via the first wireless network in response to the link being switched to the second wireless network.Type: GrantFiled: February 3, 2010Date of Patent: December 23, 2014Assignee: Marvell International Ltd.Inventors: Lu Chang, Paul A. Lambert
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Patent number: 8886141Abstract: Provided is a semiconductor device that is capable of performing background calibration during a reception operation without adversely affecting reception characteristics. During a reception operation, the semiconductor device detects a timing at which an invalid received signal occurs upon a gain change or a reception channel change and performs background calibration at the detected timing. In this instance, as the received signal is invalid, performing the calibration does not further decrease the substantial accuracy of reception. Moreover, an unnecessary signal component, which would arise when the background calibration is performed at fixed intervals, will not be generated as far as the background calibration is performed at random timing.Type: GrantFiled: October 22, 2012Date of Patent: November 11, 2014Assignee: Renesas Electronics CorporationInventors: Hideo Nakane, Keisuke Kimura, Takaya Yamamoto, Tatsuji Matsuura, Ryuichi Ujiie
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Patent number: 8843091Abstract: A radio communication system includes: a receiver that is configured to receive a first radio wave sent according to a remote keyless entry system and a second radio wave sent according to a tire pressure monitoring system; and a reception mode switching unit that sets a reception mode of the receiver to a first reception mode, in which the first radio wave is received, when an ignition switch of a vehicle is off, and sets the reception mode to a second reception mode, in which the second radio wave is received, when the ignition switch of the vehicle is on. If the reception mode switching unit receives a first request to set the reception mode to the first reception mode while the reception mode is set to the second reception mode, the reception mode switching unit sets the reception mode to the first reception mode.Type: GrantFiled: July 24, 2012Date of Patent: September 23, 2014Assignees: Toyota Jidosha Kabushiki Kaisha, Denso CorporationInventors: Hiroko Murakami, Arinobu Kimura, Noriaki Okada
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Publication number: 20140273898Abstract: A regenerative selective logarithmic detector amplifier (LDA) can have integrated FM demodulation capabilities. It can receive a wired or wireless FM modulated signal and amplify or demodulate it with high sensitivity, high skirt ratio and minimized noise when compared to the prior art. When used in conjunction with other circuits such as a PLL or mixer, it can improve interference rejection and frequency selectivity and be locked on a precise channel in frequency and phase. The LDA produces intermittent oscillations that are self-quenched when reaching a given threshold. It also embeds the circuitry to perform direct FM discrimination. FM demodulation process is completed by a simple analog or digital frequency to voltage converter. This plus the fact that the instantaneous regeneration gain is low-medium permit to detect signals of small amplitudes buried in the noise.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Inventors: Forrest Brown, Patrick Rada, Alexandre Dupuy
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Patent number: 8818308Abstract: A multi-tuner apparatus comprises a splitter (S) for received RF signals. The splitter has a splitter output (U) for connection to a plurality of tuners. To reduce signal degradation and dissipation the output impedance of the splitter output is substantially lower than the input impedance of each of the tuners.Type: GrantFiled: August 15, 2006Date of Patent: August 26, 2014Assignee: NXP, B.V.Inventors: Jan Van Sinderen, Francois Seneschal, Jacques Potier
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Patent number: 8811906Abstract: The present technology provides an apparatus and a method for transmitting data via two or more FM signals in an interference avoiding manner. The apparatus comprises at least two FM transmitters. Each FM transmitter is configured to transmit a FM signal on a particular FM channel characterized by a certain carrier frequency that includes data and optionally one or more corresponding alternative frequencies (AFs). The apparatus further includes at least two receivers for receiving incoming electromagnetic radiation (EMR). At least one of the receivers is configured to receive incoming EMR associated with at least one of the FM channels, and another is configured to receive incoming EMR at least at frequencies outside of the FM channels. The controller is configured to separately control activation and deactivation of the FM transmitters and determine the carrier frequencies and the one or more AFs based upon incoming EMR.Type: GrantFiled: May 13, 2011Date of Patent: August 19, 2014Assignee: Sierra Wireless, Inc.Inventors: Ashish Syal, Roderick David Earle Filer, Behrouz Pourseyed, Steven John Bennett
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Publication number: 20140220917Abstract: A multimode rake receiver comprise a common antenna interface, arranged to at least receive in a first mode a first CDMA radio channel carrying information encoded according to a first baseband modulation standard and to receive in a second mode a second CDMA radio channel carrying information encoded according to a second baseband modulation standard; and a common signal processing path, at least arranged to process in the first mode the first CDMA radio channel and in the second mode the second CDMA radio channel, wherein the common signal path comprises a common descrambling and de-spreading unit and a common hybrid code generating unit arranged to provide to the common descrambling and de-spreading unit chip codes applicable in the first mode to the first CDMA radio channel and in the second mode to the second CDMA radio channel.Type: ApplicationFiled: October 19, 2011Publication date: August 7, 2014Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Guy Drory, Eliya Babistky, Ron Bercovich
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Patent number: 8781433Abstract: A semiconductor device is provided with a power supply circuit having a function to generate a power supply voltage from a wireless signal and an A/D converter circuit having a function to detect the strength of the wireless signal by an A/D conversion of a voltage generated from the wireless signal. This enables to provide a semiconductor device which does not require replacement of batteries, has few limitations on its physical shape and mass, and has a function to detect a physical position. By formation of the semiconductor device with use of a thin film transistor formed over a plastic substrate, a lightweight semiconductor device, which has flexibility in physical shape and a function to detect a physical location, can be provided at low cost.Type: GrantFiled: February 8, 2012Date of Patent: July 15, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiyuki Kurokawa, Takayuki Ikeda, Masami Endo, Hiroki Dembo, Daisuke Kawae, Takayuki Inoue, Munehiro Kozuma
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Patent number: 8644427Abstract: A radio frequency receiver with dual band reception and dual analog-to-digital converters (ADCs) can be configured to operate in a single channel mode or a dual channel mode to receive a single RF input channel or two RF input channels at the same or different frequency bands. In the single channel mode, the dual ADCs can be used to improve the performance of the receiver for the single input signal or the dual ADCs can be configured for reduced power consumption. In the dual channel mode, the dual ADCs operate on the individual RF input signals to realize dual band reception. In one embodiment, the receiver is configured for asymmetric dual band reception to receive a wideband input signal on a first input signal path and a narrow band input signal on a second input signal path.Type: GrantFiled: August 10, 2011Date of Patent: February 4, 2014Assignee: SiGear Europe SarlInventors: Alain-Serge Porret, Friederich Mombers, Melly Thierry
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Patent number: 8634786Abstract: Provision of gigabit-rate data transmission over wireless radio links, using carrier frequencies in the millimeter-wave range (>30 GHz). More specifically, a circuit for detection of amplitude-shift keyed (ASK) or other amplitude modulations (AM) which can be easily incorporated into an integrated circuit receiver system is described, making the receiver capable of supporting both complex IQ modulation schemes and simpler, non-coherent on-off or multiple-level keying signals. Several novel radio architectures are also described which, with the addition of a frequency discriminator network, have the capability of handling frequency shift keyed (FSK) or other frequency modulations (FM), as well as AM and complex IQ modulation schemes. These radio architectures support this wide variety of modulations by efficiently sharing detector hardware components.Type: GrantFiled: August 20, 2012Date of Patent: January 21, 2014Assignee: International Business Machines CorporationInventors: Troy J. Beukema, Scott K. Reynolds
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Patent number: 8503944Abstract: A signal detection apparatus 23 for determining whether a detection target signal is included in a received radio signal, includes: a waveform feature amount calculation unit 31 configured to calculate a waveform feature amount Rx? representing a waveform feature; a test statistic calculation unit 32 configured to calculate test statistic Zx? of each detection target signal by using the waveform feature amount; and a signal decision unit 33 configured to determine presence or absence of each detection target signal by comparing the test statistic Zx? of each detection target signal with a threshold ?, wherein, under a condition where a specific detection target signal is removed, the test statistic calculation unit calculates a test statistic for a detection target signal which is not removed, and the signal decision unit determines presence or absence of the detection target signal by comparing the calculated test statistic with the threshold.Type: GrantFiled: December 22, 2010Date of Patent: August 6, 2013Assignee: NTT DoCoMo, Inc.Inventors: Hiroki Harada, Hiromasa Fujii, Shunji Miura, Tomoyuki Ohya
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Patent number: 8503929Abstract: Certain aspects of a method and system for providing wireless communication may comprise encoding within a single chip, FM audio data received by a FM radio. The encoded received FM audio data may be translated within the single chip to a Bluetooth compatible format. The translated received FM audio data may be communicated to at least one off-chip Bluetooth enabled device via the Bluetooth radio via at least one of the following: a synchronous connection oriented (SCO) link, an extended SCO (eSCO) link, and an advanced audio distribution profile (A2DP) link. The received FM audio data may be communicated via a dedicated link that couples the FM radio to a PCM interface that handles the encoding.Type: GrantFiled: November 22, 2005Date of Patent: August 6, 2013Assignee: Broadcom CorporationInventors: Brima Ibrahim, Mitchell Buznitsky, Angel Polo, John Walley, Theodore A. Trost
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Patent number: 8442438Abstract: A wireless transmitter includes a first filtering unit coupled to a first cable for outputting a first DC source transmitted on the first cable, a first power converting unit for converting the first DC source into a second DC source, a second filtering unit for eliminating noise in the second DC source, a first DC blocking unit for blocking the second DC source and outputting a second frequency modulation (FM) signal, an amplifier for amplifying the second FM signal to generate a first FM signal, and a second DC blocking unit coupled to the amplifier and the first cable, for outputting the first FM signal to the first cable, such that the first FM signal is transmitted to the air through the first cable as a transmitting antenna.Type: GrantFiled: June 30, 2010Date of Patent: May 14, 2013Assignee: Wistron NeWeb CorporationInventors: Cheng-Hsiung Hsu, Chung-Wei Hsu, Cheng-Yen Wen, Chun-Chia Kuo
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Patent number: 8437706Abstract: Aspects of a method and system for transmission or reception of signals utilizing a DDFS clocked are provided. A first oscillator signal utilized for transmission and/or reception of signals of a first wireless communication protocol may be generated, and a direct digital frequency synthesizer (DDFS) may be clocked by the first oscillator signal to generate one or more second oscillator signals. The one or more second oscillator signals may be modulated to generate a signal adhering to a second wireless communication protocol. The one or more second oscillator signals may be utilized to demodulate signals of the second wireless communication protocol. A control word input to the DDFS may control a frequency of the one or more second oscillator signals generated by the DDFS. Simultaneous transmission and reception of signals of the second wireless communication protocol may be simulated by switching the control word input to the DDFS between two values.Type: GrantFiled: April 5, 2011Date of Patent: May 7, 2013Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 8428512Abstract: A method and system sharing a Bluetooth processor for FM functions are provided. The single chip may comprise an integrated Bluetooth radio, an integrated FM radio, and processor system. A processor in the processor system may be utilized for Bluetooth and FM data processing and may time multiplex between the Bluetooth and FM data processing based on interrupt signals. The processor may operate in a low power mode based on a clock signal generated from a low power oscillator. When a Bluetooth interrupt signal is received, the processor may enable Bluetooth data processing that may be based on a Bluetooth clock signal. When an FM interrupt signal is received, the processor may enable FM data processing that may be based on an FM clock signal. When data processing is complete, the processor may return to the low power mode operation.Type: GrantFiled: November 22, 2005Date of Patent: April 23, 2013Assignee: Broadcom CorporationInventors: Brima Ibrahim, Mitchell Buznitsky, John Walley, Ahmadreza Rofougaran, Bojko Marholev, Angel Polo, Asif Grushkevich
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Patent number: 8401462Abstract: A media broadcast and distribution system is disclosed which substitutes storage for communications, allowing more efficient use of scarce bandwidth resources. One embodiment allows a terrestrial FM broadcaster to offer a larger number of higher quality audio channels than current satellite radio services such as Sirius and XM Satellite Radio. This embodiment also has features that offer a better user experience than with personal audio devices such as Apple's iPodâ„¢. Another embodiment allows satellite radio services to expand their video offerings.Type: GrantFiled: June 17, 2010Date of Patent: March 19, 2013Inventor: Martin Edward Hellman
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Patent number: 8390492Abstract: A signal processing apparatus includes: a digital processing unit to which a digital input signal is supplied, which performs a digital process on the digital input signal to produce a digital signal, and which produces a control signal designating a specific time period when an amplitude of an analog output signal is to be lowered; a DA-conversion unit which converts the digital signal to produce an analog signal; and a variable gain unit which adjusts an amplitude of the analog signal to produce the analog output signal, and which lowers the amplitude of the analog output signal during the specific time period designated by the control signal.Type: GrantFiled: March 24, 2011Date of Patent: March 5, 2013Assignee: Yamaha CorporationInventor: Takeshi Daishoji
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Patent number: 8364102Abstract: In one embodiment a universal front end module for network communications is disclosed. The module can include a mode controller coupled to components of a transmission path. A first tunable filter on a transmit path can receive a mode control signal from the mode controller and receive a signal to be transmitted and provide a filtered output signal responsive to the mode control signal and the signal to be transmitted. The mode control signal can be associated with a predetermined network protocol such as WiMax, a WiFi, a 3G LTE and a cellular standard where each standard has a predetermined operating frequency and protocol. The module can also include a tunable power amplifier to provide an amplified transmittable signal over a single transmit path can be utilized to transmit the transmittable signal in at least two different modes responsive to the mode controller.Type: GrantFiled: April 19, 2007Date of Patent: January 29, 2013Assignee: Intel CorporationInventors: Nader Rohani, Hongtao Xu, Yulin Tan
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Patent number: 8331464Abstract: A method of transmitting data using a generalized phase shift based proceding or an extended phase shift precoding scheme in a multiple-antenna system using a plurality of subcarrier and a transceiver for supporting the same are disclosed. A phase shift based precoding matrix may be generalized and determined by a product of a diagonal matrix for phase shift and a unitary matrix for maintaining orthogonality in spatial domain. The diagonal matrix may be extended by a product of a proceding matrix for increasing channel power and the diagonal matrix for phase shift. The design of the transceiver can be simplified or communication efficiency can be improved by generalizing and extending the phase shift based proceding.Type: GrantFiled: May 29, 2007Date of Patent: December 11, 2012Assignee: LG Electronics Inc.Inventors: Moon Il Lee, Jae Won Chang, Bin Chul Ihm, Jin Hyuk Jung, Jin Young Chun
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Patent number: 8295824Abstract: A management unit allocates network resources multiservice communication devices capable of communicating via a plurality of networks. The management unit includes a communication device interface for facilitating a bidirectional data communication with the multiservice communication devices via a wireless control channel, the bidirectional data communication including outbound control data sent to multiservice communication devices and inbound control data received from at multiservice communication devices. The wireless control channel is separate from the communication between multiservice communication devices and the networks. A network interface receives network resource data from the networks. A management processing unit generates the outbound control data in response. The management processing unit facilities the handoff of a real-time service accessed by the multiservice communication devices via a first network to a second network.Type: GrantFiled: April 11, 2012Date of Patent: October 23, 2012Assignee: Broadcom CorporationInventors: Vinko Erceg, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley
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Patent number: 8285205Abstract: A method and system for a single chip integrated Bluetooth and FM transceiver and baseband processor are provided. The single chip may comprise a Bluetooth radio, an FM radio, a processor system, and a peripheral transport unit (PTU). FM data may be received and/or transmitted via the FM radio and Bluetooth data may be received and/or transmitted via the Bluetooth radio. The FM radio may receive radio data system (RDS) data. The PTU may support digital and analog interfaces. A processor in the processor system may time-multiplex processing of FM data and processing of Bluetooth data. The single chip may operate in an FM-only, a Bluetooth-only, and an FM-Bluetooth mode. The single chip may reduce power consumption by disabling portions of the Bluetooth radio during FM-only mode and/or disabling analog circuitry when performing digital processing. Communication between Bluetooth and FM channels may be enabled via the single chip.Type: GrantFiled: November 22, 2005Date of Patent: October 9, 2012Assignee: Broadcom CorporationInventors: Brima Ibrahim, Mitchell Buznitsky, Ahmadreza Rofougaran, John Walley, Bojko Marholev, Roy Tobin, Prasanna Desai, Angel Polo, Hea Joung Kim, Paul A. Lettieri, Siukai Mak
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Patent number: 8285215Abstract: A system and method bringing video to commercial FM and video to Sub-Carrier Authorization programming, the system would make use of a Double Sideband Suppress Carrier SCA frequency at 67 kHz, modulated by a Slow San Video Converter for providing minute by minute snap shots of video related to the audio program on the main FM channel such as if the main FM channel being listened to is 87.5 MHz then the related video channel would be 87.567 MHz, also, an additional audio/slow scan video FM station would be available as well and will be known as fm2, the audio portion of fm2 is an Independent Sideband Suppressed Carrier for providing audio in stereo at the SCA frequency at 114 kHz the slow scan video portion of the station is again another Double Sideband Suppress Carrier SCA at the frequency of 92 kHz.Type: GrantFiled: September 12, 2009Date of Patent: October 9, 2012Inventor: Keith Jones (aka Jabari)
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Patent number: 8271022Abstract: A wireless device, such as a mobile phone, and a method for operating the wireless device to access a media option. The wireless device may include a media player; a radio signal receiver system configured to receive media signals; a controller comprising a memory comprising a list of different media options, indicating media items the user is interested in taking part of and a media scanner configured to scan the radio signal receiver system to detect media content associated with the media options; a user input interface to select one media item currently indicted as detected; and a media selector configured to pass received media signals relating to the selected media item to the media player.Type: GrantFiled: November 20, 2009Date of Patent: September 18, 2012Assignee: Sony Ericsson Mobile Communications ABInventors: Tomas Wassingbo, Heino Wendelrup
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Patent number: 8249543Abstract: Integrated low-IF (low intermediate frequency) data receivers and associated methods are disclosed that provide advantageous and cost-efficient solutions.Type: GrantFiled: June 30, 2009Date of Patent: August 21, 2012Assignee: Silicon Laboratories Inc.Inventors: G. Tyson Tuttle, Dan B. Kasha
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Patent number: 8195143Abstract: A management unit allocates network resources to a plurality of multiservice communication devices capable of communicating via a plurality of networks. The management unit includes a communication device interface for facilitating a bidirectional data communication with the plurality of multiservice communication devices via a wireless control channel, the bidirectional data communication including outbound control data sent to at least one of the plurality of multiservice communication devices and inbound control data received from at least one of the plurality of multiservice communication devices, wherein the wireless control channel is separate from the communication between the plurality of multiservice communication devices and the plurality of networks. A network interface receives network resource data from the plurality of networks.Type: GrantFiled: November 4, 2008Date of Patent: June 5, 2012Assignee: Broadcom CorporationInventors: Vinko Erceg, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley
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Patent number: 8185099Abstract: A service aggregator allocates network resources to a plurality of multiservice communication devices capable of communicating via a plurality of networks. The service aggregator includes a communication device interface for facilitating a bidirectional data communication with the plurality of multiservice communication devices via a wireless control channel, the bidirectional data communication including outbound control data sent to at least one of the plurality of multiservice communication devices and inbound control data received from at least one of the plurality of multiservice communication devices, wherein the wireless control channel is separate from the communication between the plurality of multiservice communication devices and the plurality of networks. A network interface receives network resource data from the plurality of networks.Type: GrantFiled: November 4, 2008Date of Patent: May 22, 2012Assignee: Broadcom CorporationInventors: Vinko Erceg, John Walley, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz
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Patent number: 8180307Abstract: An electric device for receiving a radio frequency (RF) signal is provided. The electric device includes an antenna, a first power amplifier, a battery, a second filter and a second power amplifier. The antenna is used for receiving and outputting a RF signal. The first power amplifier is used for receiving the RF signal, amplifying the RF signal and outputting the RF enhanced by the first power amplifier and a feedback signal. The battery is used for providing a working voltage to the first power amplifier, and receiving and outputting the feedback signal. The second filter is used for receiving the working voltage provided by the battery and the feedback signal, filtering the feedback signal and outputting the working voltage. The second power amplifier is used for receiving the working voltage.Type: GrantFiled: December 11, 2008Date of Patent: May 15, 2012Assignee: Inventec CorporationInventor: Che-Wei Hsu
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Patent number: 8159620Abstract: A receiver can handle different types of reception signals, such as, for example, TV and FM-radio signals. In the receiver, a mixer (MIX) mixes a reception signal with an oscillator signal (OOS) so as to obtain a mixer output signal (MOS), which comprises a frequency-shifted version of the reception signal. An intermediate frequency amplifier (IFAMP) applies an amplified mixer output signal (MOSA) to two different intermediate frequency filters: one for first type reception signals and another for second type reception signals. A switchable coupling section (DBTP, SWA) is coupled between the mixer (MIX) and the intermediate frequency amplifier (IFAMP). The switchable coupling section (DBTP, SWA) is switchable to a first state and a second state. In the first state, the mixer output signal (MOS) substantially reaches an input (IAD) of the intermediate frequency amplifier (IFAMP) via a first coupling path (DTBP).Type: GrantFiled: July 20, 2006Date of Patent: April 17, 2012Assignee: NXP B.V.Inventors: Yeow T. Toh, Kam C. Kwong