| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Modulator and transmitter for IR codes and method | EP02292047.4 | 2002-08-16 | EP1396931A1 | 2004-03-10 | Li, Chun Fat; Chin, Yuan Fuat |
A device and method for emitting amplitude-modulated signals, which are fed to an emitting member from a signal source via a driver stage, said amplitude-modulated signals containing a higher frequency carrier and a lower frequency useful signal modulated onto said carrier, said device comprises amplifying means for amplifying the level of the signals received from the signal source to a predetermined level. The device further comprises integrating means for performing integration on the amplified signals so as to remove the higher frequency carrier and signal regenerating means for regenerating the useful signal from the integrated signals and providing the useful signal to said driver stage and emitting member for emission. The high frequency carrier can be removed effectively from the modulated IR signals from the signal source. |
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| 102 | LOW NOISE GILBERT MULTIPLIER CELLS AND QUADRATURE MODULATORS, AND RELATED METHODS | EP98944701.6 | 1998-09-03 | EP1012963A1 | 2000-06-28 | HADJICHRISTOS, Aristotle |
| A Gilber Multiplier Cell includes an emitter-coupled transistor and a pair of cross-coupled emitter-coupled transistor pairs. A filter couples the emitter-coupled transistor pair to the pair of the cross-coupled emitter-coupled transistor pairs. The filter may include a pair of inductors or resistors, a respective one of which serially couples a respective one of the emitter-coupled transistor pair to a respective one of the pair of cross-coupled emitter-coupled transistor pairs, and a capacitor connected between the pair of inductors or resistors. A local oscillator is coupled to the pair of cross-coupled emitter-coupled transistor pairs and a data input is coupled to the emitter-coupled transistor pair. By low pass filtering the output of the emitter-coupled transistor pair that is applied to the pair of cross-coupled emitter-coupled transistor pairs, low noise floor Gilbert Multiplier Cells and quadraphase modulators may be provided. | ||||||
| 103 | Dispositif précorrecteur du signal audiofréquence dans une chaine de modulation d'impulsions en largeur d'émetteur de signaux radioélectriques à modulation d'amplitude | EP86400296.9 | 1986-02-11 | EP0196239B1 | 1990-03-28 | Rebernak, William |
| 104 | RADIO TRANSMITTER MODULATION CONTROL CIRCUITRY | EP82901690.6 | 1982-04-19 | EP0079922B1 | 1987-11-11 | WEBER, Paul John |
| 105 | AM-RF Transmitter with compensation for power supply variations | EP87301667.9 | 1987-02-25 | EP0236068A2 | 1987-09-09 | Hulsey, Gilmer L.; Weaver, Bryan A. |
An AM-RF transmitter includes a transmitter stage having a DC power supply terminal energizing by an AC to DC converter including reactances having a resonant frequency approaching frequencies of an information, modulating signal. The voltage applied by the supply to the DC power supply terminal is reduced to such an extent as to induce distortion in the transmitted AM-RF carrier in response to the transmitter stage being modulated by positive amplitude variations having frequencies that approach the resonant frequency. The amplitude of the transmitter stage modulation is increased when the distortion would otherwise occur to substantially prevent the distortion. The information signal is modified in amplitude by only AC coupling a replica of the DC power supply voltage variations to one input of a four quadrat multiplier, having a second input responsive to the information signal. |
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| 106 | Dispositif précorrecteur du signal audiofréquence dans une chaine de modulation d'impulsions en largeur d'émetteur de signaux radioélectriques à modulation d'amplitude | EP86400296.9 | 1986-02-11 | EP0196239A1 | 1986-10-01 | Rebernak, William |
Le dispositif comprend un dispositif convertisseur (12) du signal audiofréquence en échantillons numériques, des moyens de traitement numérique (11) couplés à la sortie du dispositif convertisseur (12) pour calculer des largeurs d'impulsions en fonction de l'amplitude des échantillons numériques fournis par le dispositif convertisseur (12) du signal audiofréquence, des moyens de mémorisation (15) adressés par les moyens de traitement et contenant pour chaque largeur d'impulsion calculée par les moyens de traitement une largeur correspondante corrigée, et un dispositif calibreur d'impulsions (16) commandé par les moyens de mémorisation pour fournir des impulsions dont la largeur correspond à la valeur de chaque largeur- d'impulsion corrigée lue dans les moyens de mémorisation. Application : Emetteur à modulation d'amplitude. |
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| 107 | Sender für impulsförmige Hochfrequenzsignale | EP81103180.6 | 1981-04-28 | EP0039080B1 | 1984-12-05 | Bertocchi, Giuseppe |
| 108 | Sender für impulsförmige Hochfrequenzsignale | EP81103180.6 | 1981-04-28 | EP0039080A1 | 1981-11-04 | Bertocchi, Giuseppe |
Bei einem Sender für impulsförmige Hochfrequenzsignale mit einer Hochfrequenzquelle, Verstärkern und einer Modulationseinrichtung erfolgt eine Regelung des Modulationssignals so, daß beim modulierten Ausgangssignal bestimmte Parameter eingehalten werden. Das Modulationssignal ist aus mehreren unterschiedlichen Signalen zusammengesetzt. Von dem modulierten Ausgangssignal wird nach Demodulation an vorgegebenen Stellen (bei bestimmten Prozentsätzen der maximalen Amplitude des demodulierten Signals) die Breite des demodulierten Signals, insbesondere eines Impulses, gemessen. Abhängig von dem Vergliech von gemessener Impulsbreite und der zugehörigen Sollpulsbriete wird ein Regelsignal erzeugt. Das Regelsignal steuert die Amplituden der Komponenten, die das Modulationssignal bilden. |
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| 109 | 다중 증폭 모드를 가지는 바이어스 모듈레이터 및 그 증폭 모드 제어 방법 | KR1020120114203 | 2012-10-15 | KR101332566B1 | 2013-11-25 | 박창근; 윤석현 |
| The present invention relates to a bias modulator including a multi-amplification mode and an amplification mode control method, and a bias modulator including the multi-amplification mode comprises: a driving power signal generator for generating a driving power signal by comparing a signal, differently amplified, with an envelope signal, detected from a signal inputted to a power amplifier and linearly amplified, and a power signal generator capable of generating a power signal supplied to the power amplifier by controlling the number of pulse modulation amplifiers for amplifying the driving power signal according to the power size of the signal inputted to the power amplifier, by driving the plurality of the pulse width modulation amplifiers, and by receiving the driving power signal. Therefore, the bias modulator can reduce unnecessary power consumption by controlling the size of the power outputted to the power amplifier according to the power size of the signal inputted to the power amplifier. [Reference numerals] (111) Calculation amplifying unit;(112) Differential amplifying unit;(113) Comparing unit;(121) On/off control unit;(122) Driving amplifying unit;(123) Multi amplifying unit | ||||||
| 110 | 디지털 변조 회로 | KR1020060083566 | 2006-08-31 | KR100782791B1 | 2007-12-05 | 서만석; 박형철; 이성수; 이상엽; 양창수; 양완철 |
| A digital modulation circuit is provided to reduce power consumption caused by a phase locked loop circuit by using only a digital circuit. A clock generation part(11) generates a reference pulse clock with a constant period. An up/down counter(12) generates a count value of fixed bits by up-counting or down-counting the reference pulse clock, and outputs one bit of the count value as a transmission signal. A control part(13) determines counting start/end time of the up/down counter and up-counting or down-counting operation of the up/down counter by being synchronized to the reference pulse clock, according to the value of digital transmission data to be transmitted. A band pass filter(14) converts the transmission signal outputted from the up/down counter into a sine wave. | ||||||
| 111 | 어학시스템에 있어서의 신호전달 및 성적처리기법 | KR1019990027374 | 1999-07-07 | KR1019990083736A | 1999-12-06 | 김홍섭 |
| 본발명은어학시스템에있어서의카세트, VTR, CD플레이어등의외부입력음을학생자리마다놓여지는보조증폭기로송출하는그 방법및 성적처리방법에관한것이다. 이를위하여본 발명은카세트, CD플레이어, VTR 등의외부에서입력되는여러개의원음과교사의원음을 PWM ( pulse width modulation)방식으로변조하는단계와, 변조된두 개의신호를전원전압(Vc)의절반이되는점(Vc/2)을기준점으로그 위에적어도하나의신호를배치하고상기기준점아래에적어도한 개의신호를배치하여복합신호로만드는방법, 상기복합신호를학생자리의보조증폭기로송출하고송출된복합신호를비교기를통하여분리해검출해내는단계와, 전체시스템의통신처리를프레임개념을도입해서처리하는단계와, 마이크로프로쎄서를이용해정답, 오답, 시험점수, 등수, 문제의난이도등의성적처리를하고마이크로프린터로프린트할 수있는단계로이루어진것에특징이있다. 따라서, 본발명은어학시스템에있어서상당한가격경쟁력을높일수 있어외국어교육환경개선에일조를할 것이다. | ||||||
| 112 | 라디오 송신기 변조 제어회로 | KR1019820002307 | 1982-05-25 | KR1019880000424B1 | 1988-03-22 | 폴죤웨버 |
| The circuitry increases the average power of the modulating signal and thus the signal-to-noise ratio. The circuitry includes a microphone, an audio amplifier, a splatter filter, a potentiometer, an oscillator and transmitter as well as an antenna. The auido amplifier includes an operational amplifier having an input resistor coupled via a capacitor to the amplifier, and a feedback resistor coupled between the filter and the input resistor. When driven into amplitude limiting, the phase and amplitude of harmonic signals from the operational amplifier are altered by the filter. | ||||||
| 113 | METHOD AND DEVICE FOR PRODUCING AN AMPLITUDE-MODULATED SIGNAL | PCT/EP2008004952 | 2008-06-19 | WO2008155121A3 | 2009-05-14 | SCHOENINGER BERND |
| An improved method for producing an amplitude-modulated signal and an associated device are characterized substantially by the following characteristics, or an improved device for producing an amplitude-modulated signal comprises the following characteristics: the useful or information signal (101) is produced from a digitized useful or information signal (101), which is converted into an analog useful or information signal (1). A corrected analog useful or information signal (1k') is used for the useful or information signal (1) instead of a desired signal (1'), the corrected signal compared to the desired signal (1') being changed such that upper harmonics, which when using the desired signal (1') are outside the useful band (3) above the limit value for the signal size of the modulated carrier signal, when using the corrected useful or information signal (1k') are within the permitted range below the limit value for the signal size of the modulated carrier signal. | ||||||
| 114 | 送信機用の合成部及びデジタル振幅変調装置 | JP2013092732 | 2013-04-25 | JP5710684B2 | 2015-04-30 | 高橋 慶彦; 舟橋 祐紀 |
| 115 | 振幅変調器 | JP2011522686 | 2010-04-08 | JPWO2011007481A1 | 2012-12-20 | 前田 昌克; 昌克 前田; 耐一 池戸 |
| 広帯域化のために生じる弊害を抑えつつ、広帯域化を実現する振幅変調器を提供する。広帯域用の源信号を受け付けて低周波用と高周波用との2系統に分岐させ、それぞれ別々に信号処理を施して低周波用源信号と高周波用源信号とを出力する信号処理部と、低周波用源信号を変調して低周波用変調信号を出力する第1変調部と、高周波用源信号を変調して高周波用変調信号を出力する第2変調部と、低周波用変調信号を低周波領域のみが有効に出力される第1入力端子へ入力し、かつ高周波用変調信号を高周波領域のみが有効に出力される第2入力端子へ入力して、第1入力端子へ入力された信号の高周波成分と第2入力端子へ入力された信号の低周波成分とを合成して、広帯域用の源信号に対応する変調された信号を次段へ出力する合成出力部とを備える。 | ||||||
| 116 | Medium wave radio broadcasting equipment | JP14303292 | 1992-06-03 | JP2653741B2 | 1997-09-17 | MITSUNAMI MICHITOSHI; KOJIMA YUTAKA; HAEIWA KAZUHISA; NAKA TAKASHI |
| 117 | Wide band iq modulator provided with automatic rc/cr quadrature phase network | JP20764894 | 1994-08-31 | JPH07183929A | 1995-07-21 | MAAKASU KEI DATSUSHIRUBUA; ANDORIYUU EMU TEIITSUERU |
| PURPOSE: To generate the quadrature phase of equal amplitude over wide range frequencies by providing a quadrature phase network for responding to a control signal depending on frequency. CONSTITUTION: An RF signal 24 is impressed to CR/RC phase shift networks (NW) 48 and 49. The NW 48 and 49 respectively output quadrature phase shift signals ϕi67 and ϕq66 through CR/RC phase shifters 61 and 60 in response to analog control signals Vci50 and Vcq51. The signals ϕi and ϕq are inputted to a linear amplifier 52 and level signals Di55 and Dq59 are outputted by level detectors 55 and 58. The signals Di55 and Dq59 control the NW 48 and 49 so as to turn the difference of Di55 and Dq59 to zero through a servo system for driving the signals Vci50 and Vcq51. This control can be performed by impressing the signals Vci and Vcq to the gate of MESFET consisting of variable resistors Ri65 and Rq62 at the phase shifters 61 and 60. Thus, the quadrature phase shift of equal amplitude can be provided in spite of frequency. | ||||||
| 118 | Waveform distortion compensation circuit | JP14303292 | 1992-06-03 | JPH05335949A | 1993-12-17 | MITSUNAMI MICHITOSHI; KOJIMA YUTAKA; HAEIWA KAZUHISA; NAKA TAKASHI |
| PURPOSE: To reduce distortion caused by the settling time of a D/A converter in a fully solid-state medium wave radio broadcast equipment. CONSTITUTION: An analog signal fed to an analog power amplifier 28 is generated by using two D/A converters 20, 22. Data subject to D/A conversion by the D/A converters 20, 22 are latched by a latch 12 or 14 in an opposite timing. A changeover switch 24 provided at the post stage of the D/A converters 20, 22 selects an output, of the D/A converters 20, 22 so that a slope of the D/A converters 20, 22 due to settling time is excluded and the selected signal is outputted to the analog power amplifier 28. Distortion due to the settling time of the D/A converters 20, 22 is not included in an amplitude modulation wave outputted from a synthesis circuit 32. COPYRIGHT: (C)1993,JPO&Japio | ||||||
| 119 | Musensoshinkinohenchoseigyokairo | JP50162582 | 1982-04-19 | JPH0234486B2 | 1990-08-03 | UEEBAA HOORU JON |
| 120 | JPS6255724B2 - | JP19197381 | 1981-11-30 | JPS6255724B2 | 1987-11-20 | SUGYAMA YUKIO |
