| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 用于具有规定调制系数的载波信号调幅的方法和电路 | CN201080016393.5 | 2010-02-23 | CN102395982B | 2015-01-21 | V·孔奇; M·斯蒂格里奇 |
| 测量在阻抗匹配块的输出端处的载波信号的振幅，作为第一振幅值。计算在阻抗匹配块的输出端处的信号振幅值，作为第二振幅值，第二振幅值是由所述载波信号的具有所述调制系数的调幅产生的信号应呈现的振幅值，所述载波信号具有为第一振幅值的振幅。改变发射器的设定，以降低在阻抗匹配块的输出端处的载波信号振幅。测量在阻抗匹配块的输出端处的新载波信号的振幅，作为新振幅值。发射器设定持续改变多次，直到新振幅值等于或小于所述第二振幅值或者在所述第二振幅值周围的预定容差范围之内为止。最新发射器设定参数被保存为发射器设定参数，借助所述发射器设定参数，发射器将生成按照规定方式调幅的发射信号。具有规定调制系数的调幅的设定是自动进行的。简化了发射器电路的设计。 | ||||||
| 2 | 用于具有规定调制系数的载波信号调幅的方法和电路 | CN201080016393.5 | 2010-02-23 | CN102395982A | 2012-03-28 | V·孔奇; M·斯蒂格里奇 |
| 测量在阻抗匹配块的输出端处的载波信号的振幅，作为第一振幅值。计算在阻抗匹配块的输出端处的信号振幅值，作为第二振幅值，第二振幅值是由所述载波信号的具有所述调制系数的调幅产生的信号应呈现的振幅值，所述载波信号具有为第一振幅值的振幅。改变发射器的设定，以降低在阻抗匹配块的输出端处的载波信号振幅。测量在阻抗匹配块的输出端处的新载波信号的振幅，作为新振幅值。发射器设定持续改变多次，直到新振幅值等于或小于所述第二振幅值或者在所述第二振幅值周围的预定容差范围之内为止。最新发射器设定参数被保存为发射器设定参数，借助所述发射器设定参数，发射器将生成按照规定方式调幅的发射信号。具有规定调制系数的调幅的设定是自动进行的。简化了发射器电路的设计。 | ||||||
| 3 | AMPLITUDE MODULATION CONTROLLER FOR POLAR TRANSMITTER USING COARSE AND FINE POWER CONTROL | EP08851801.4 | 2008-11-21 | EP2218173A2 | 2010-08-18 | RYTER, Roland |
| Apparatus (170) for generating a modulation signal for use in modulating the power supply of a power amplifier (160) uses coarse and fine control for controlling the amplitude of the modulation signal, and thereby controlling the output power of the power amplifier (160). The modulation signal may be generated in the digital domain and converted to the analogue domain by a digital-to-analogue converter (20), with the digital-to-analogue converter (20) providing the fine control and a variable gain amplifier (40) providing the coarse control of the analogue signal. | ||||||
| 4 | Modulation circuit, the transmission device and the transmission circuit | JP16227498 | 1998-06-10 | JP3874145B2 | 2007-01-31 | 繁 有沢 |
| 5 | Semiconductor circuit | JP5485580 | 1980-04-24 | JPS55145425A | 1980-11-13 | HERUMUUTO RESURAA; OTSUTOO MIYUURUBAUERU; KURAUSUDEIITAA BIGARU |
| 6 | スピンバルブ素子及びその駆動方法 | JP2009537991 | 2008-08-28 | JPWO2009054183A1 | 2011-03-03 | 川上 春雄; 春雄 川上; 荻本 泰史; 泰史 荻本; 栄希 足立 |
| スピンバルブ素子の過熱を防止する。駆動電流を、該発振信号の発振周波数よりも低い周波数により振幅変調するステップを含む、スピンバルブ素子に駆動電流を流して発振信号を得る駆動方法であり、この振幅変調は、ON−OFF変調とすることができ、さらに、ON−OFF変調の通電状態の期間tonは、αを当該熱拡散部の熱拡散率、Dを熱拡散部の厚さとして、関係式ton | ||||||
| 7 | Amplifier circuit, modulation circuit, demodulation circuit, transmitter and receiver | JP16227498 | 1998-06-10 | JPH11355367A | 1999-12-24 | ARISAWA SHIGERU |
| PROBLEM TO BE SOLVED: To apply an amplifier circuit, a modulation circuit, a demodulation circuit, a transmitter and a receiver to an IC card that inputs/outputs various data e.g. in a non-contact state and to a reader/writer that communicates with the IC card so that they together with other circuit blocks can simply and easily be made to an integrated circuit and they can efficiently be operated. SOLUTION: This circuit is configured so that 1st and 2nd output signals with a prescribed phase are added to an input signal SC to be outputted, at least the 2nd output signal is gated in responce to input data TX or the result of power amplification is attenuated at the output side of a power amplifier circuit in response to the input data to produce an amplitude modulation signal. Furthermore, the amplitude modulation signal is biased and amplified or clipped and processed. Further, the amplitude modulation signal is clipped and processed, further, the polarity of the amplitude modulation signal is discriminated, the discrimination result is multiplied with the amplitude modulation signal and further, the amplitude modulation signal is selectively outputted based on the polarity discrimination result of the amplitude modulation signal. | ||||||
| 8 | Amplitude modulating circuit | JP16839479 | 1979-12-26 | JPS5691509A | 1981-07-24 | ISHIGAMI YASUHIKO |
| PURPOSE:To enable amplitude modulation with simple constitution by controlling MISFET as a variable resistance provided to the negative feedback path of an operational amplifier. CONSTITUTION:The uninverted input terminal of operational amplifier 1 is grounded and to the inverted input terminal, different sound frequency signals are inputted via resistances R1 and R2. At its output terminal, the sum of the different sound frequency signals appears. Then, negative feedback is provided from the output terminal of operational amplifier 1 to its inverted input terminal. The negative feedback resistance is provided with MISFET. Since MISFET can vary in resistance value with control voltage VG, the gain of the amplifier can be controlled. Using as the control voltage a voltage varying by steps enables this circuit to be used widely as a circuit which obtains a volumelike display output signal. | ||||||
| 9 | PROCÉDÉ DE GESTION DU FONCTIONNEMENT D'UN OBJET CAPABLE DE COMMUNIQUER SANS CONTACT AVEC UN LECTEUR, DISPOSITIF ET OBJET CORRESPONDANTS | EP15182344.0 | 2015-08-25 | EP3001575A1 | 2016-03-30 | DHAYNI, Achraf |
Le procédé de gestion du fonctionnement d'un objet capable de communiquer sans contact avec un lecteur magnétiquement couplé audit objet, comprend au moins une phase de transmission d'informations depuis ledit objet vers le lecteur comporte une modulation de l'impédance d'une charge connectée aux bornes de l'antenne dudit objet. Le procédé comprend en outre préalablement à ladite au moins une phase de transmission, une phase de contrôle comportant un contrôle (S301) du niveau de modulation d'amplitude d'un signal de test modulé (STM) présent à l'antenne de l'objet et résultant d'une modulation de test (S300) de l'impédance de ladite charge et une modification capacitive (S303) de l'impédance de ladite charge si ce niveau est inférieur à un seuil.
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| 10 | Halbleiterschaltung für die Amplitudenmodulation von Folgen periodischer Wechselspannungssignale | EP80102141.1 | 1980-04-21 | EP0018572B1 | 1983-07-20 | Rösler, Helmut; Mühlbauer, Otto; Bigall, Klaus-Dieter, Dipl.-Phys. |
| 11 | AMPLITUDE MODULATION CONTROLLER FOR POLAR TRANSMITTER | US12785212 | 2010-05-21 | US20100297965A1 | 2010-11-25 | Roland Ryter |
| Apparatus for generating a modulation signal for use in modulating the power supply of a power amplifier uses coarse and fine control for controlling the amplitude of the modulation signal, and thereby controlling the output power of the power amplifier. The modulation signal may be generated in the digital domain and converted to the analog domain by a digital-to-analog converter, with the digital-to-analog converter providing the fine control and a variable gain amplifier providing the coarse control of the analog signal. | ||||||
| 12 | Contactless IC card system | US11688121 | 2007-03-19 | US07609109B2 | 2009-10-27 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: signal processing means for producing first and second input signals; first clamping circuit for clamping said first input signal; second clamping circuit for clamping said second input signal; first band limiting means for removing a component of said first input signal from an output signal of said first clamping circuit; second band limiting means for removing a component of said second input signal from an output signal of said second clamping circuit; and calculating means for adding, or averaging an output signal of said first band limiting means and an output signal of said second band limiting means. | ||||||
| 13 | CONTACTLESS IC CARD SYSTEM | US12372448 | 2009-02-17 | US20090174495A1 | 2009-07-09 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 14 | Contactless IC card system | US11424161 | 2006-06-14 | US07248114B2 | 2007-07-24 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 15 | Modulated tuned L/C transmitter circuits | US11281338 | 2005-11-17 | US20070109819A1 | 2007-05-17 | George Powell |
| A transmitter circuit for generating a modulated oscillating output signal, comprises a tuned inductor-capacitor resonant circuit, and further comprise switching means for changing the resonant circuit capacitance by switching a capacitance into and out of circuit, wherein the resulting change in resonant circuit output is used to provide modulation of the output with a data signal. The invention thus interrupts the resonant cycling of a resonant oscillator circuit to provide a modulation function, and this is achieved by switching the (or one of many) capacitors into and out of circuit. | ||||||
| 16 | CONTACTLESS IC CARD SYSTEM | US11424161 | 2006-06-14 | US20060220759A1 | 2006-10-05 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 17 | Contactless IC card system | US10886745 | 2004-07-08 | US20040251981A1 | 2004-12-16 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 18 | Contactless IC card system | US10442736 | 2003-05-21 | US06784730B2 | 2004-08-31 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 19 | Contactless IC card system | US09751140 | 2000-12-29 | US20010013814A1 | 2001-08-16 | Shigeru Arisawa |
| In a contactless IC card system, a modulating circuit manufactured in an IC form is operable in a high power efficiency. The demodulating apparatus is arranged by: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal; a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal; gate means for gating at least the second output signal; calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data. | ||||||
| 20 | Control current sensitive modulators | US47514565 | 1965-07-27 | US3397368A | 1968-08-13 | WILHELM JACOB WALTER EMIL |
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