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47 results about "Hybrid amplifier" patented technology
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Ultrahigh energy short pulse lasers
ActiveUS20070171945A1Improve reliabilityLaser using scattering effectsAudio power amplifierHybrid amplifier
A Chirped pulse amplification (CPA) fiber laser system. The CPA fiber laser system includes a fiber mode-locking (ML) oscillator implemented as a cavity dumped ML oscillator including a cavity dumper for generating a seed laser at a reduced repetition rate to project to a pulse stretcher for stretching a pulse width of the laser. The CPA fiber laser system further includes a multistage amplifier chain for generating an amplified laser to project to a compressor for compressing the amplified laser. The multistage amplifier chain further includes a hybrid amplifier includes a solid-state amplifier to generate a laser of approximately 1˜10 mJ for a 10-100 KHz repetition rate.
Owner:POLARONYX
Radiometer measurement linearization system and method
ActiveUS7250747B1Variation in sensitivityImprove dynamic rangeRadiation pyrometryDirection finders using radio wavesAudio power amplifierDetector circuits
A radiometer system includes a dual channel, quadrature hybrid amplifier circuit that receives an antenna signal and a known reference signal to equalize gain in two parallel gain stages. A detector circuit receives a signal from the quadrature hybrid amplifier circuit and detects the signals to form a detected output for eliminating sensitivity to gain variations, improving dynamic range of the input signal, and reducing calibration requirements. A log ratio amplifier receives and linearizes the detected output. An integrator circuit receives a signal from the log ratio amplifier and sums the signal over an observation.
Owner:REVEAL IMAGING
Television karaoke system
The invention provides a public television karaoke systems including MIC signal mixed with the microphone signal mixer, the mixer and microphone signals connect the microphone volume control signal controller, connected with the microphone volume controller handling the reverberation circuit, audio mixing amplifiers, sequential mixed audio amplifier connected television volume audio power amplifier controller and TV, as well as through the A / D converter with the microphone signal mixer connected audio and video processors; including audio and video processor various useful to external hard drives and flash memory USB 2.0 high-speed OTG controller, digital audio output interface, video encoding output interface, receive remote control orders issued by the operation of the various infrared receiver mouth; PC through the USB interface and other USB storage devices for data transmission, television karaoke rich source programs, more convenient and more practical.
Owner:SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
Efficient Low Noise High Speed Amplifier
ActiveUS20150171793A1Fast and quiet operationAvoid excessive power consumptionAmplifier modifications to reduce noise influencePower amplifiersLow noiseElectricity
A hybrid amplifier includes a linear amplifier coupled in series with a switching amplifier. The linear amplifier may generate an intermediate amplified signal according to an input signal. The switching amplifier may generate an output signal according to the intermediate amplified signal, the output signal having an amplitude with respect to a reference voltage provided at a reference node. The linear amplifier may drive the reference node to adjust the reference voltage responsive to transient changes in the output signal. A high-pass filter coupled to the linear amplifier and the switching amplifier may enable the switching amplifier to provide most of the steady-state current, which may drive a load, from actual ground. The linear amplifier and switching amplifier may be independently powered, for example from a power supply having a primary winding and two electrically isolated secondary windings that respectively provide power to the linear amplifier and the switching amplifier.
Owner:NATIONAL INSTRUMENTS
Multiband amplifier based on discrete SOA-Raman amplifiers
Several discrete hybrid amplifiers are used in parallel for amplifying an optical signal in an optical fiber system. An optical signal is first split into two or more separate signals each with a separate wavelength band. Each wavelength band is then amplified by a Raman pump utilizing a length of highly non-linear fiber as the gain medium, and by an SOA amplifier. The combination of the Raman amplifier and the SOA yields a level gain over the wavelength band. The amplified wavelength band signals are then recombined. The disclosed amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems and in local access portions of the network.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Multi-band hybrid SOA-Raman amplifier for CWDM
A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical signal may be demultiplexed and separately amplified by the SOAs before re-multiplexing. Gain profiles of the Raman pumps and the SOAs are selected to compensate for gain tilt and to alleviate the power penalty due to cross-gain modulation in the SOAs. The disclosed hybrid amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Discrete hybrid SOA-Raman amplifier with broad gain bandwidth
A discrete hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses one or more Raman laser pumps together with semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. The Raman pump utilizes a length of highly non-linear fiber as the gain medium. The disclosed lower-cost hybrid amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems and in local access portions of the network.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Microstructural multi-layer composite distributor
The invention discloses a microstructural multi-layer composite distributor, which comprises a microlayer distributor and a hybrid amplifier, wherein the microlayer distributor is formed by overlapping one or more structural plates; the structural plate is provided with a plurality of flow layer communicating ports at intervals; after a plurality of layers of structural plates are overlapped, corresponding flow layer communicating ports of the layers are communicated; a feed melt is injected from runners of the structural plates, is distributed by the flow layer communicating ports of the layers to be superposed, and is transmitted to the hybrid amplifier; the hybrid amplifier is provided with a plurality of flow layer channels which are overlapped in a staggered mode and form a hybrid outlet channel; and the flow layers are multiplied and overlapped at the hybrid outlet to form an integral flow layer. The ideal thickness of the flow layer is achieved through compression, the layer number of the structural plates can be increased so as to achieve the overlapping and multiplication of more layers, and various rays are reflected through interference of the surfaces of the hundreds of flow layers, so that a composite membrane has a rainbow effect.
Owner:ZHEJIANG JINGCHENG MOLD MASCH CO LTD
WDM-PON system comprising remote bidirectional hybrid amplifier
PendingCN110138453ALow cost requirementsSimple structureRing-type electromagnetic networksWavelength-division multiplex systemsAudio power amplifierHybrid amplifier
The invention provides a WDM-PON system comprising remote bidirectional hybrid amplifier. The PON system comprises an OLT, a transmission optical fiber, a bidirectional dual-band erbium-doped opticalfiber amplifier and an ONU, wherein the OLT comprises an OLT end signal transmitting end, an OLT end branching and combining device, a first optical fiber circulator, an OLT end signal receiving end,a remote pumping source and a signal pumping and combining device; the bidirectional dual-band erbium-doped optical fiber amplifier comprises a second optical fiber circulator, a first erbium-doped optical fiber, a third optical fiber circulator, a second erbium-doped optical fiber, a first light reflector and a second light reflector, wherein the ONU comprises an ONU end wave splitter / combiner and one or more ONU units; the ONU unit comprises a fourth optical fiber circulator, an ONU end signal receiving end and an ONU end signal transmitting end. According to the invention, only one pumpingsource (two pumping lasers) is adopted to realize the amplification of uplink and downlink signal light with different wave bands, the residual pumping light is fully utilized, and the transmission distance of WDM-PON system is prolonged.
Owner:无锡瀚诺光电科技有限公司
Low cost system and method that implements acousto-optic (AO) RF signal excitation
InactiveUS7667888B2Impedence networksPiezoelectric/electrostriction/magnetostriction machinesAudio power amplifierHybrid amplifier
An acousto-optic modulator includes an acousto-optic bulk medium. A transducer is attached to the acousto-optic bulk medium and formed as a linear array of electrodes. A transducer driver is connected to each electrode and comprises a plurality of amplifiers connected to the electrodes such that each electrode is driven by a respective amplifier as a means to provide a low cost alternative to the use of higher power hybrid amplifiers in conventional AO device applications.
Owner:HARRIS CORP
Signal receiver with a duty-cycle controller
ActiveUS20150126145A1Effectively attenuated or even completely compensatedCost efficientReceivers monitoringContinuous to patterned pulse manipulationAudio power amplifierHybrid amplifier
The signal receiver has means to suppress at least one higher harmonic component from a MEMS or crystal oscillator having a reference resonator in filtered intermediate signals of a signal receiver. The signal receiver comprises an antenna for receiving electromagnetic signals, a low noise amplifier for amplifying signals received by the antenna, one MEMS or crystal oscillator comprising a reference resonator to generate an oscillating signal with a predefined duty-cycle, a mixer for mixing the amplified and received signals with the oscillating signal to generate intermediate signals, a band-pass filter to filter the intermediate signals, and a duty-cycle controller coupled to the MEMS or crystal oscillator and coupled to the output of the band-pass filter to analyze the spectrum of the filtered intermediate signals and to modify the duty-cycle of the oscillating signal in response to the spectrum analysis of the filtered intermediate signals.
Owner:THE SWATCH GRP RES & DEVELONMENT LTD
Hybrid optical amplifier with optimized noise figure
InactiveCN103580754ALaser using scattering effectsElectromagnetic transmissionAudio power amplifierHybrid amplifier
Methods for optimizing a noise figure of a variable gain hybrid amplifier (HA) which includes a variable gain Raman amplifier with adjustable average gain G R and gain tilt T R and a variable gain lumped amplifier with adjustable average gain G L and gain tilt T L . In various embodiments, the methods include receiving as input a required hybrid amplifier average gain G H value and a required gain tilt T H value and deriving a set of G R , T R , G L and T L values which yield an optimal optimized hybrid amplifier NF and satisfy the conditions G R + G L = G H and that T R + T L is within a specified hybrid amplifier operating tilt range. In some embodiments, the derived T R and T L values satisfy the condition T R + T L = T H . A hybrid amplifier implementing a method disclosed herein includes a modified control unit configured to control both average gain and gain tilt parameters of the Raman amplifier and the lumped amplifier to satisfy the conditions above.
Owner:FINISAR
Apparatus and method for gain-spectrum-tilt compensation in long-wavelength band dispersion-compensating hybrid fiber amplifier
InactiveUS20050007656A1Degree of polarization can be reducedReduce polarizationLaser using scattering effectsFibre transmissionAudio power amplifierHybrid amplifier
The present invention provides an apparatus and method for compensating for the variation of a gain spectrum attributable to the temperature variation of a fiber amplifier, and a long-wavelength band dispersion-compensating hybrid amplifier equipped with the gain spectrum compensating apparatus. The apparatus includes a DCF located between a first amplification stage and a second amplification stage to compensate for dispersion of an optical signal output from the first amplification stage and perform Raman amplification of the optical signal using input pumping light; at least one pumping light provision means for providing forward or backward pumping light to the DCF; first and second temperature detection means for detecting temperature variations of the first and second amplification stages, respectively; and control means for controlling intensity of the pumping light of the pumping light provision means according to the detected temperature variations.
Owner:ELECTRONICS & TELECOMM RES INST
Regulation and control method based on erbium-doped Raman amplifier and hybrid amplifier
ActiveCN113746557AActive medium shape and constructionElectromagnetic transmissionHybrid amplifierGenetics algorithms
The invention provides a regulation and control method based on an erbium-doped Raman amplifier and a hybrid amplifier, and the method comprises the following steps: selecting parameters in a parameter selection interval according to a preset parameter selection interval, and building the parameters into a plurality of parameter groups, wherein parameters in the parameter group comprise Raman pumping power, erbium-doped pumping power, Raman optical fiber length and erbium-doped optical fiber length; calculating the total gain according to the Raman pumping power, the erbium-doped pumping power, the Raman fiber length and the erbium-doped fiber length, performing iterative updating on the parameter groups by using a genetic algorithm, and selecting the parameter group corresponding to the larger total gain in each iterative updating; and after the last iteration is completed, selecting the parameter group corresponding to the maximum total gain as a final target parameter. The Raman optical fiber amplifier and the erbium-doped optical fiber amplifier are combined, iteration is carried out through the genetic algorithm, the parameter set corresponding to the maximum total gain is output, meanwhile, the Raman optical fiber amplifier and the erbium-doped optical fiber amplifier are adjusted, and the amplification effect is improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM +2
Multi-band hybrid SOA-raman amplifier for CWDM
A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical signal may be demultiplexed and separately amplified by the SOAs before re-multiplexing. Gain profiles of the Raman pumps and the SOAs are selected to compensate for gain tilt and to alleviate the power penalty due to cross-gain modulation in the SOAs. The disclosed hybrid amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Hybrid amplifier and signal combiner
A radio-frequency module comprises a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal, and a correction signal input path configured to receive a correction signal and provide the correction signal to a source node of the common source transistor to generate, at least in part, the combined radio-frequency output signal.
Owner:SKYWORKS SOLUTIONS INC
Hybrid amplifier and signal combiner
ActiveUS10164669B2Amplifier modifications to reduce non-linear distortionPower amplifiersAudio power amplifierHybrid amplifier
A radio-frequency module comprises a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal, and a correction signal input path configured to receive a correction signal and provide the correction signal to a source node of the common source transistor to generate, at least in part, the combined radio-frequency output signal.
Owner:SKYWORKS SOLUTIONS INC
Ultrahigh energy short pulse lasers
A Chirped pulse amplification (CPA) fiber laser system. The CPA fiber laser system includes a fiber mode-locking (ML) oscillator implemented as a cavity dumped ML oscillator including a cavity dumper for generating a seed laser at a reduced repetition rate to project to a pulse stretcher for stretching a pulse width of the laser. The CPA fiber laser system further includes a multistage amplifier chain for generating an amplified laser to project to a compressor for compressing the amplified laser. The multistage amplifier chain further includes a hybrid amplifier includes a solid-state amplifier to generate a laser of approximately 1˜10 mJ for a 10-100 KHz repetition rate.
Owner:POLARONYX
Cascaded Hybrid amplifier control method and system
ActiveCN105207719AImprove performanceControl gainElectromagnetic transmissionLaser monitoring arrangementsAudio power amplifierHybrid amplifier
The invention provides a cascaded Hybrid amplifier control method and system. All the Hybrid amplifiers in the cascaded Hybrid amplifiers start to perform pump turn-on flow simultaneously: when the Hybrid amplifiers receive a pump turn-on request, Raman input optical power stability judgment is performed when the conditions of satisfaction are judged, operation of pump turn-on is performed on an EDFA, and the EDFA enters an APC working mode; operation of pump turn-on is performed the Raman, and gain deviation is calculated according to calculation of input optical power before and after pump turn-on of the Raman when there is no reflecting alarm; Raman gain is adjusted according to the gain deviation, an AGC working mode is switched on after completion of judgment, and the AGC working mode is an automatic gain control working mode; and the working mode of the EDFA is switched to the AGC working mode. The gain of the Raman can be accurately controlled so that control precision is enhanced and performance of the cascaded Hybrid amplifiers can be improved.
Owner:GUANGXUN SCI & TECH WUHAN
Signal receiver with a duty-cycle controller
ActiveUS9419660B2Effectively attenuated or even completely compensatedCost efficientReceivers monitoringContinuous to patterned pulse manipulationFrequency spectrumBand-pass filter
The signal receiver has means to suppress at least one higher harmonic component from a MEMS or crystal oscillator having a reference resonator in filtered intermediate signals of a signal receiver. The signal receiver comprises an antenna for receiving electromagnetic signals, a low noise amplifier for amplifying signals received by the antenna, one MEMS or crystal oscillator comprising a reference resonator to generate an oscillating signal with a predefined duty-cycle, a mixer for mixing the amplified and received signals with the oscillating signal to generate intermediate signals, a band-pass filter to filter the intermediate signals, and a duty-cycle controller coupled to the MEMS or crystal oscillator and coupled to the output of the band-pass filter to analyze the spectrum of the filtered intermediate signals and to modify the duty-cycle of the oscillating signal in response to the spectrum analysis of the filtered intermediate signals.
Owner:THE SWATCH GRP RES & DEVELONMENT LTD
Apparatus and method for gain-spectrum-tilt compensation in long-wavelength band dispersion-compensating hybrid fiber amplifier
InactiveUS6992816B2Reduce polarizationSuppress polarization dependenceLaser using scattering effectsFibre transmissionAudio power amplifierHybrid amplifier
The present invention provides an apparatus and method for compensating for the variation of a gain spectrum attributable to the temperature variation of a fiber amplifier, and a long-wavelength band dispersion-compensating hybrid amplifier equipped with the gain spectrum compensating apparatus. The apparatus includes a DCF located between a first amplification stage and a second amplification stage to compensate for dispersion of an optical signal output from the first amplification stage and perform Raman amplification of the optical signal using input pumping light; at least one pumping light provision means for providing forward or backward pumping light to the DCF; first and second temperature detection means for detecting temperature variations of the first and second amplification stages, respectively; and control means for controlling intensity of the pumping light of the pumping light provision means according to the detected temperature variations.
Owner:ELECTRONICS & TELECOMM RES INST
Combined antenna capable of being erected on satellite antenna
InactiveCN102800997AWide range of receptionMeeting the Increasing Demands of Antenna CapabilitiesAntenna supports/mountingsRadiating elements structural formsAudio power amplifierHybrid amplifier
The invention discloses a combined antenna capable of being erected on a satellite antenna. The combined antenna comprises a high-frequency antenna element (1), a low-frequency antenna element (2) and a unified hybrid amplifier (3), wherein the low-frequency antenna element (2) is a U-shaped metal bracket of which the two ends are in closed connection with the unified hybrid amplifier (3); the high-frequency antenna element (1) is fixed on the U-shaped metal bracket through a supporting piece (5); the bottom of the high-frequency antenna element (1) is provided with a wire hole (4); and one side of the supporting piece (5) is provided with a fixed piece (6) fixed on the satellite antenna. The combined antenna can be firmly erected on the satellite antenna, has a wide receiving range, covers high frequency, low frequency and ultrahigh frequency and can meet the increasing requirements of people on antenna functions.
Owner:SHENZHEN ANTOP TECH
Multi-band hybrid SOA-Raman amplifier for CWDM
A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical signal may be demultiplexed and separately amplified by the SOAs before remultiplexing. Gain profiles of the Raman pumps and the SOAs are selected to compensate for gain tilt and to alleviate the power penalty due to cross-gain modulation in the SOAs. The disclosed hybrid amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof
InactiveCN102497529AChange the phenomenon of "running around"Easy to operateTelevision system detailsColor television detailsKey pressingAudio power amplifier
A novel camera locating tracking method for an intelligent automatic sound mixing system mainly includes following steps: (1) controlling audio signals and camera signals separately and designing a microphone channel and a camera channel respectively, wherein the microphone channel and the camera channel are characterized in that microphone / camera keys are arranged at the upper ends of the microphone channel and the camera channel, and a microphone / camera selecting switch is further arranged between the microphone channel and the camera channel; (2) designing a camera signal receiver for receiving camera request signals, enabling the camera signal receiver to be connected with a mixing amplifier and a controller in the intelligent automatic sound mixing system, enabling the controller to provide signals for a camera driver and control position transition of a camera; and (3) connecting the mixing amplifier and an input amplifier in the intelligent automatic sound mixing system, and enabling the audio signals to achieve sound amplification according to the working principle of intelligent automatic sound mixing. A phenomenon that projection images run along with variation of sound amplifying signals caused by providing the driving signals for the camera driver through the sound amplifying signals is changed thoroughly.
Owner:天津市华音宇科工贸有限公司
Multiband amplifier based on discrete SOA-Raman amplifiers
Several discrete hybrid amplifiers are used in parallel for amplifying an optical signal in an optical fiber system. An optical signal is first split into two or more separate signals each with a separate wavelength band. Each wavelength band is then amplified by a Raman pump utilizing a length of highly non-linear fiber as the gain medium, and by an SOA amplifier. The combination of the Raman amplifier and the SOA yields a level gain over the wavelength band. The amplified wavelength band signals are then recombined. The disclosed amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems and in local access portions of the network.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
A control method and hybrid amplifier based on erbium-doped and Raman amplifiers
ActiveCN113746557BElectromagnetic transmissionActive medium shape and constructionFiberHybrid amplifier
Owner:BEIJING UNIV OF POSTS & TELECOMM +2
Bidirectional Raman erbium-doped optical fiber hybrid amplifier and optical signal amplification method and system
ActiveCN111711055AHighly integratedReduce dosageActive medium shape and constructionNon-linear opticsCommunications systemHybrid amplifier
The embodiment of the invention discloses a bidirectional Raman erbium-doped fiber hybrid amplifier, an optical signal amplification method and an optical communication system. The optical fiber hybrid amplifier comprises a Raman pump output port, a bidirectional Raman amplifier, a 2 * 2 optical switch, an erbium-doped optical fiber amplifier input connection port, an erbium-doped optical fiber amplifier, an erbium-doped optical fiber amplifier output connection port and a system signal optical port. The Raman pump output port, the bidirectional Raman amplifier, the 2 * 2 optical switch and the system signal optical port are sequentially connected through an optical path, and the erbium-doped optical fiber amplifier is connected with the 2 * 2 optical switch through the erbium-doped optical fiber amplifier input connecting port and the erbium-doped optical fiber amplifier output connecting port. The 2 * 2 optical switch can gate a connection path between the bidirectional Raman amplifier and system signal light port and the output and input connection ports of the erbium-doped fiber amplifier, thereby realizing opposite or same-direction propagation of the pump light and the signallight. According to the embodiment of the invention, the Raman pump output end is stably connected with the optical fiber, repeated plugging is not needed, and single-fiber duplex is supported.
Owner:GUANGXUN SCI & TECH WUHAN
Hybrid class amplifier
ActiveCN102138281BHigh frequency amplifiersAmplifier modifications to raise efficiencyAudio power amplifierHybrid amplifier
Owner:TELEFON AB LM ERICSSON (PUBL)
Microstructural multi-layer composite distributor
The invention discloses a microstructural multi-layer composite distributor, which comprises a microlayer distributor and a hybrid amplifier, wherein the microlayer distributor is formed by overlapping one or more structural plates; the structural plate is provided with a plurality of flow layer communicating ports at intervals; after a plurality of layers of structural plates are overlapped, corresponding flow layer communicating ports of the layers are communicated; a feed melt is injected from runners of the structural plates, is distributed by the flow layer communicating ports of the layers to be superposed, and is transmitted to the hybrid amplifier; the hybrid amplifier is provided with a plurality of flow layer channels which are overlapped in a staggered mode and form a hybrid outlet channel; and the flow layers are multiplied and overlapped at the hybrid outlet to form an integral flow layer. The ideal thickness of the flow layer is achieved through compression, the layer number of the structural plates can be increased so as to achieve the overlapping and multiplication of more layers, and various rays are reflected through interference of the surfaces of the hundreds of flow layers, so that a composite membrane has a rainbow effect.
Owner:ZHEJIANG JINGCHENG MOLD MASCH CO LTD
Digital hybrid amplifier calibration and compensation method
ActiveCN102428646BMeet the isolation requirementsAmplifiers wit coupling networksTransceiverWireless transceiver
Owner:ALCATEL LUCENT SAS
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