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公开(公告)号：US20210293942A1
公开(公告)日：2021-09-23
申请号：US17204984
申请日：2021-03-18
摘要： A method of calculating distance-correction data performed by a range-finding device includes: emitting light to a calibration target at a specified distance from a range-finding device and receiving light reflected from the calibration target that has been irradiated with the emitted light, with an optical-transmission member between the range-finding device and the calibration target, to obtain an actual-measured distance from the range-finding device to the calibration target; and calculating distance-correction data using actual-measurement error data between the specified distance and the actual measured distance to the calibration target, the distance-correction data being used to correct a distance from the range-finding device to a target object measured by emitting light to the target object and receiving light reflected from the target object that has been irradiated with the emitted light, with the optical-transmission member between the range-finding device and the target object.
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公开(公告)号：US4473852A
公开(公告)日：1984-09-25
申请号：US412001
申请日：1982-08-27
CPC分类号： H03G9/025
摘要： Conventional Dolby B-type or C-type noise reduction systems respond sensitively to an A.C. bias signal during recording onto a magnetic tape. As a result, the system might exhibit a large encode error. In order to reduce such encode error, the gain - frequency characteristic control sensitivity of a side chain in the system to the A.C. bias signal to be supplied to a recording head is set at a value smaller than that of the gain - frequency characteristic control sensitivity of the side chain to an encode input signal at an audio frequency. Such a reduction of the encode error is achieved by connecting a bias trap circuit to a gain control amplifier included in the side chain.
摘要翻译： 传统的杜比B型或C型降噪系统在记录到磁带上时敏感地响应于A.C.偏差信号。 因此，系统可能会出现较大的编码错误。 为了减少这种编码误差，系统中侧链的增益 - 频率特性控制灵敏度被提供给记录头的AC偏置信号被设置为小于增益 - 频率特性控制灵敏度 的侧链到音频的编码输入信号。 通过将偏置捕获电路连接到侧链中包括的增益控制放大器来实现编码误差的这种减少。
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公开(公告)号：US4412189A
公开(公告)日：1983-10-25
申请号：US262814
申请日：1981-05-12
申请人： Yasuo Kominami , Tetsuo Sato , Yuichi Ohkubo
发明人： Yasuo Kominami , Tetsuo Sato , Yuichi Ohkubo
CPC分类号： H03G9/025
摘要： Either an input signal of a combining network or an output signal of an inverter arranged on a main path is fed to a side path through a mode switch in a switchable signal compressor/signal expander. Since an input terminal of a control amplifier is connected to a variable filter without passing through a signal amplifier, the deviation of the detection characteristic of a rectifier and integrator attributed to D.C. offset voltages of the signal amplifier and the control amplifier can be reduced. On the other hand, a switchable signal compressor/signal expander in another aspect of performance has a reference voltage generator for producing a D.C. reference voltage, and the output D.C. level of the control amplifier is maintained at a level approximate to the D.C. reference voltage. The other ends of first and second capacitors of the rectifier and integrator are also supplied with the D.C. reference voltage, so that the fluctuation of the detection characteristic of the rectifier and integrator ascribable to the fluctuation of the D.C. reference voltage is reduced.
摘要翻译： 组合网络的输入信号或布置在主路径上的反相器的输出信号被馈送到可切换信号压缩器/信号扩展器中的模式开关的侧路径。 由于控制放大器的输入端子连接到可变滤波器而不通过信号放大器，所以可以减小归因于信号放大器和控制放大器的直流偏移电压的整流器和积分器的检测特性的偏差。 另一方面，另一方面的可切换信号压缩器/信号扩展器具有用于产生直流参考电压的参考电压发生器，并且控制放大器的输出直流电平保持在接近直流参考电压的电平。 整流器和积分器的第一和第二电容器的另一端还具有直流参考电压，从而降低归因于直流参考电压的波动的整流器和积分器的检测特性的波动。
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4.发明授权Monostable multivibrator and FM detector circuit employing common emitter transistor amplifier with plural emitter resistors to avoid circuit operation from signal noise 失效采用具有多个发射极电阻的公共发射极晶体管放大器的Monostable多谐振荡器和FM检波器电路，以避免信号噪声的电路运行
公开(公告)号：US4282448A
公开(公告)日：1981-08-04
申请号：US969085
申请日：1978-12-13
摘要： This invention discloses a monostable multivibrator which is useful for an FM detector circuit of a pulse count system. The monostable multivibrator has a time constant circuit which includes a capacitor, an amplifier circuit which receives an output of the time constant circuit, a positive feedback circuit which is connected between an output end of the amplifier circuit and an input end of the time constant circuit, and a trigger terminal which is disposed in a circuit loop constructed of the time constant circuit, the amplifier circuit and the positive feedback circuit; and is characterized in that the amplifier circuit is a differential amplifier which is made up of a pair of transistors connected in the differential form, the transistors being connected in common through emitter resistances connected in series with respective emitters thereof. Thus, the monostable multivibrator can provide pulse signals of a fixed pulse width without being influenced by noise.
摘要翻译： 本发明公开了一种可用于脉冲计数系统的FM检测器电路的单稳态多谐振荡器。 单稳态多谐振荡器具有时间常数电路，其包括电容器，接收时间常数电路的输出的放大器电路，连接在放大器电路的输出端和时间常数电路的输入端之间的正反馈电路 以及设置在由时间常数电路，放大电路和正反馈电路构成的电路回路中的触发端子; 并且其特征在于放大电路是由以差分形式连接的一对晶体管构成的差分放大器，晶体管通过与其各自的发射极串联连接的发射极电阻共同连接。 因此，单稳态多谐振荡器可以提供固定脉冲宽度的脉冲信号，而不受噪声的影响。
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5.发明授权Circuit for preventing output clipping of R.F. stage in radio receiver 失效用于防止R.F.的输出限幅的电路 无线电接收机的舞台
公开(公告)号：US4030035A
公开(公告)日：1977-06-14
申请号：US617638
申请日：1975-09-29
申请人： Masanori Ienaka , Yasuo Kominami , Yukio Suzuki , Masami Kawamura
发明人： Masanori Ienaka , Yasuo Kominami , Yukio Suzuki , Masami Kawamura
CPC分类号： H03G3/3068
摘要： In a receiver comprising a radio frequency amplifier stage, a frequency converter stage, an intermediate frequency amplifier stage and a detector, so that the gains of the radio frequency amplifier stage and the intermediate frequency amplifier stage are automatically controlled by an AGC voltage derived from the detector, the improvement further comprising a voltage comparator which compares a signal amplitude value of the radio frequency amplifier stage and a predetermined reference value and which provides a detection output signal when the former value becomes greater than the latter value, the gain of the radio frequency amplifier stage being reduced by the detection output signal so as to prevent the output clipping of the radio frequency amplifier stage.
摘要翻译： 在包括射频放大器级，频率转换器级，中频放大器级和检测器的接收器中，使得射频放大器级和中频放大级的增益由源自 所述改进还包括电压比较器，其比较所述射频放大器级的信号幅度值和预定参考值，并且当所述前一值变得大于后一值时提供检测输出信号，所述射频增益 放大器级被检测输出信号减小，以防止射频放大器级的输出限幅。
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6.发明授权Monostable multivibrator circuit and FM detector circuit employing predetermined load resistance and constant current to increase response rate of differential transistor pair 失效单稳态多谐振荡器电路和FM检测电路采用预定的负载电阻和恒定电流来提高差分晶体管对的响应速率
公开(公告)号：US4297601A
公开(公告)日：1981-10-27
申请号：US3962
申请日：1979-01-16
申请人： Takeshi Wada , Yasuo Kominami , Yukihiko Miyamoto , Tsuneo Yamada
发明人： Takeshi Wada , Yasuo Kominami , Yukihiko Miyamoto , Tsuneo Yamada
IPC分类号： H03K3/013 , H03D3/04 , H03K3/02 , H03K3/023 , H03K3/0232 , H03K5/04 , H03K9/06 , H03K5/12 , H03K3/284
摘要： A monostable multivibrator circuit is disclosed. It is characterized by comprising a time constant circuit which includes a capacitor, an amplifier circuit which receives an output signal of the time constant circuit and in which a signal amplifying transistor operates in the non-saturated state, a positive feedback circuit which is connected between the output end of the amplifier circuit and the input end of the time constant circuit and in which a signal amplifying transistor operates in the non-saturated state, and a trigger terminal which is disposed in a circuit loop constructed of the time constant circuit, the amplifier circuit and the positive feedback circuit. Further, it is characterized in that a signal which is produced by the shift from the non-conductive state to the conductive state of the signal amplifying transistor connected to an output terminal of the positive feedback circuit is supplied to the time constant circuit as a positive feedback signal.
摘要翻译： 公开了一种单稳态多谐振荡器电路。 其特征在于包括时间常数电路，其包括电容器，接收时间常数电路的输出信号并且其中信号放大晶体管工作在非饱和状态的放大器电路，正反馈电路连接在 放大器电路的输出端和时间常数电路的输入端，信号放大晶体管工作在非饱和状态，触发端子设置在由时间常数电路构成的电路环路中， 放大电路和正反馈电路。 此外，其特征在于，通过从连接到正反馈电路的输出端子的信号放大晶体管的非导通状态转变为导通状态而产生的信号作为正值提供给时间常数电路 反馈信号。
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公开(公告)号：US4247949A
公开(公告)日：1981-01-27
申请号：US10018
申请日：1979-02-06
申请人： Kazuo Watanabe , Masanori Ienaka , Yasuo Kominami , Makoto Homma
发明人： Kazuo Watanabe , Masanori Ienaka , Yasuo Kominami , Makoto Homma
CPC分类号： H03J3/14
摘要： An input signal is applied to a first limiting amplifier circuit, and an output of the first limiting amplifier circuit is applied to a second limiting amplifier circuit. An output of the second limiting amplifier circuit is applied to a third limiting amplifier circuit. The output signal of the first limiting amplifier circuit is applied to a first detector circuit, the output signal of the second limiting amplifier circuit is applied to a second detector circuit, and the output signal of the third limiting amplifier circuit is applied to a third detector circuit. Bias means for stipulating the bias states of the first, second and third detector circuits are coupled to the third detector circuit. An output signal of the third detector circuit is applied to the second detector circuit as a bias signal, and an output signal of the second detector circuit is applied to the first detector circuit as a bias signal. An output signal of the first detector circuit exhibits a level corresponding to the sum among the output signals of the first, second and third limiting amplifier circuits.
摘要翻译： 输入信号被施加到第一限幅放大器电路，并且第一限幅放大器电路的输出被施加到第二限幅放大器电路。 第二限幅放大器电路的输出被施加到第三限幅放大器电路。 第一限幅放大器电路的输出信号被施加到第一检测器电路，第二限幅放大器电路的输出信号被施加到第二检测器电路，并且第三限幅放大器电路的输出信号被施加到第三检测器 电路。 用于规定第一，第二和第三检测器电路的偏置状态的偏置装置耦合到第三检测器电路。 将第三检测器电路的输出信号作为偏置信号施加到第二检测器电路，并将第二检测器电路的输出信号作为偏置信号施加到第一检测器电路。 第一检测器电路的输出信号表现出与第一，第二和第三限幅放大器电路的输出信号之和相对应的电平。
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公开(公告)号：US4236252A
公开(公告)日：1980-11-25
申请号：US10019
申请日：1979-02-06
摘要： A first intermediate frequency amplifier stage which executes the amplitude limiting operation of a double-converting FM tuner employing the integrated circuit technology is constructed in the form of an integrated circuit. An output signal of the first intermediate frequency amplifier stage is put into a square pulse waveform on the basis of the amplitude limiting operation, and therefore has higher harmonic components of high frequencies. When the higher harmonic components are injected into a second mixer circuit in a second frequency converter circuit, various higher harmonic components which have frequencies higher than a second intermediate frequency appear at the output of the second mixer conduit. When the higher harmonic components at the output of the second mixer circuit are injected into an FM demodulator circuit, beat trouble is induced. The second frequency converter circuit is also constructed in the form of an integrated circuit, and filter means to pass the fundamental waves of a first intermediate frequency signal and to reject the higher harmonic frequency components thereof is connected between the output of the first intermediate frequency amlifier stage executing the amplitude limiting operation and the input of the second mixer circuit, whereby the beat trouble can be prevented.
摘要翻译： 采用集成电路技术执行双转换FM调谐器的幅度限制操作的第一中频放大器级以集成电路的形式构成。 第一中频放大器级的输出信号在幅度限制运算的基础上被置入方波脉冲波形，因此具有高频谐波分量。 当在第二变频器电路中将高次谐波分量注入第二混频器电路时，在第二混频器导管的输出处出现具有高于第二中频频率的各种高次谐波分量。 当第二混频器电路的输出端的高次谐波分量被注入到FM解调器电路中时，会引起节拍故障。 第二变频器电路也以集成电路的形式构成，滤波器装置将第一中频信号的基波通过，并将其高次谐波频率成分排除在第一中频放大器的输出端 执行振幅限制操作和第二混频器电路的输入，从而可以防止节拍故障。
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公开(公告)号：US4236117A
公开(公告)日：1980-11-25
申请号：US008848
申请日：1979-02-02
申请人： Kazuo Watanabe , Masanori Ienaka , Yasuo Kominami , Makoto Homma
发明人： Kazuo Watanabe , Masanori Ienaka , Yasuo Kominami , Makoto Homma
CPC分类号： H03D3/22 , H03D3/14 , H03D1/229 , H03D13/008 , H03D2200/0009 , H03D2200/0049
摘要： An FM detector is constructed of a phase shift network and an analog multiplier. The analog multiplier includes a differential amplifier circuit and a phase detector circuit. The differential amplifier circuit includes differential pair transistors which are driven by FM intermediate frequency signals. A base emitter junction of a diode-connected transistor is connected across a base and an emitter of one of the differential pair transistors. The base of the one transistor and a base of the diode-connected transistor are connected to an emitter of an emitter-follower transistor, and the FM intermediate frequency signal is applied to a base of the emitter-follower transistor. Noise which develops in the base of the differential pair transistor or the base of the diode-connected transistor is reduced by the low output impedance of the emitter-follower transistor, so that the signal-to-noise ratio of the FM detector is improved.
摘要翻译： FM检波器由相移网络和模拟乘法器构成。 模拟乘法器包括差分放大器电路和相位检测器电路。 差分放大器电路包括由FM中频信号驱动的差分对晶体管。 二极管连接的晶体管的基极发射极结连接在差分对晶体管之一的基极和发射极之间。 一个晶体管的基极和二极管连接的晶体管的基极连接到发射极跟随晶体管的发射极，并且FM中频信号被施加到发射极跟随器晶体管的基极。 在差分对晶体管的基极或二极管连接的晶体管的基极上产生的噪声通过发射极跟随晶体管的低输出阻抗而降低，使得FM检测器的信噪比得以改善。
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公开(公告)号：US4525636A
公开(公告)日：1985-06-25
申请号：US413147
申请日：1982-08-30
申请人： Yasuo Kominami , Yuichi Ohkubo , Kohki Aizawa , Satoshi Sasaki
发明人： Yasuo Kominami , Yuichi Ohkubo , Kohki Aizawa , Satoshi Sasaki
摘要： A variable electronic impedance circuit contains a voltage-current converter having an input terminal which is supplied with an input signal voltage, and a variable-gain current amplifier having an input terminal which is supplied with an output current of the voltage-current converter. The output signal current of the amplifier is fed back to the input terminal of the voltage-current converter.In order to prevent undesirable oscillation immediately after the closure of a power supply switch, the variable electronic impedance circuit includes a control circuit which substantially inhibits the operation of the voltage-current converter for a predetermined time after the closure of the power supply switch.
摘要翻译： 可变电子阻抗电路包括具有输入信号电压的输入端的电压 - 电流转换器和具有输入端的可变增益电流放大器，该输入端被提供有电压 - 电流转换器的输出电流。 放大器的输出信号电流反馈到电压 - 电流转换器的输入端。 为了防止在电源开关闭合后立即产生不期望的振荡，可变电子阻抗电路包括控制电路，其在电源开关闭合之后的预定时间内基本上禁止电压 - 电流转换器的操作。
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