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1. 发明申请

WO1986000481A1 RADIO COMMUNICATIONS SYSTEM 审中-公开
标题翻译：无线电通信系统
公开(公告)号：WO1986000481A1
公开(公告)日：1986-01-16
申请号：PCT/JP1985000356
申请日：1985-06-24
申请人： TRIO KABUSHIKI KAISHA , HASHIMOTO, Hiroyuki , Iizuka, Nobuo , SUZUKI, Akira
发明人： TRIO KABUSHIKI KAISHA
IPC分类号： H04B07/26
CPC分类号： H04W36/06 , H04W4/10 , H04W76/45
摘要： A radio communications system which makes communications on a vacant channel selected from a plurality of frequency channels, and wherein a calling station sends a station discrimination code to specify a remote station together with vacant channel data that enables communication, and the remote station specified by the station discrimination code is shifted to the specified vacant channel thereby to make communication between the two stations. When the channel on which the two stations are communicating is busy, and when it is desired to use another channel, one station sends the date for another channel on the channel on which the communications are made, and the other station receives the data and continues the communications on the other channel.
摘要翻译：一种无线电通信系统，其在从多个频道中选择的空闲信道上进行通信，并且其中呼叫站发送站识别码以指定远程站点，以及能够进行通信的空闲信道数据，以及由站识别码被转移到指定的空闲信道，从而在两个站之间进行通信。当两个站正在通信的信道正忙时，当需要使用另一个信道时，一个站在通信进行的信道上发送另一个信道的日期，另一个站接收数据并继续在另一个频道上的通信。

2. 发明授权

US4768033A Callsign display for transceiver 失效
标题翻译：收音机呼号显示
公开(公告)号：US4768033A
公开(公告)日：1988-08-30
申请号：US97730
申请日：1987-09-17
申请人： Shigeru Sakai , Kazunori Kudo
发明人： Shigeru Sakai , Kazunori Kudo
IPC分类号： H04B1/40 , H04B7/26 , H04Q7/00
CPC分类号： H04B1/401
摘要： A callsign display device for a transceiver which receives a radio wave carrying a coded digital signal of a data including a callsign for amature wireless radio communication. The callsign display device includes a display circuit for displaying the callsign by decoding the data including the callsign.
摘要翻译：一种用于收发器的呼号显示装置，其接收携带包括用于无效无线电通信的呼号的数据的编码数字信号的无线电波。呼号显示装置包括显示电路，用于通过对包括呼号的数据进行解码来显示呼号。

3. 发明授权

US4517520A Circuit for converting a staircase waveform into a smoothed analog signal 失效
标题翻译：用于将阶梯波形转换为平滑的模拟信号的电路
公开(公告)号：US4517520A
公开(公告)日：1985-05-14
申请号：US407601
申请日：1982-08-12
申请人： Atsushi Ogawa
发明人： Atsushi Ogawa
IPC分类号： H03D1/22 , H03K5/00
CPC分类号： H03D1/2227
摘要： In converting a staircase waveform signal into a smoothed analog signal, this circuit can perform the high-quality conversion without any sophisticated lowpass filter. An input staircase signal is delayed for one stepping interval to produce a differential signal which represents a stepping height at each step, by taking the difference between the input staircase signal and the one stepping interval delayed version thereof. The differential signal is integrated at every stepping interval. The integrated voltage forms a sawtooth wave signal which is in turn additively combined with the one stepping interval delayed version of the input staircase signal. The resulted combined signal is a smoothed signal of the input staircase signal.
摘要翻译：在将楼梯波形信号转换为平滑的模拟信号时，该电路可以执行高质量的转换，而无需任何复杂的低通滤波器。输入阶梯信号延迟一个步进间隔，通过取输入阶梯信号与其一个步进间隔延迟版本之间的差值，产生一个差分信号，该差分信号代表每一步的步进高度。差分信号以每个步进间隔积分。积分电压形成锯齿波信号，其又与输入阶梯信号的一个步进间隔延迟版本相加地组合。所得到的组合信号是输入阶梯信号的平滑信号。

4. 发明授权

US4451796A Volume control apparatus 失效
标题翻译：音量控制装置
公开(公告)号：US4451796A
公开(公告)日：1984-05-29
申请号：US300458
申请日：1981-09-08
申请人： Satoshi Yasumura
发明人： Satoshi Yasumura
IPC分类号： H03G1/00 , H03G3/04 , H03G3/20 , H03F21/00
CPC分类号： H03G3/3005 , H03G3/04
摘要： A volume control apparatus for use in an acoustic apparatus with a sound signal source and an amplifier which is usable as an alarm or warning apparatus. The volume control apparatus is provided with a motor for operating a volume control variable resistor, a manually operatable presetting variable resistor and first, second and third selectively operable manual switching means. Upon each power supply, the volume control variable resistor is always automatically set by the motor to a position corresponding to a preset position of the presetting variable resistor regardless of its position prior to the power supply.By selectively operating the first and second switching means at a desired moment after the power supply, the volume control variable resistor is set by the motor from the position corresponding to the preset position of the presetting variable resistor to a desired position regardless of its previous position.By operating the third switching means at a desired moment after the power supply, the presetting variable resistor can be adjusted while listening to a sound produced by a speaker.
摘要翻译：一种用于具有声音信号源和可用作报警或警告装置的放大器的声学装置中的音量控制装置。音量控制装置设置有用于操作音量控制可变电阻器的电动机，可手动操作的预设可变电阻器和第一，第二和第三选择性操作的手动开关装置。在每个电源上，音量控制可变电阻器始终由电动机自动设置到与预置可变电阻器的预设位置相对应的位置，而不管其在电源之前的位置如何。通过在电源之后的期望时刻选择性地操作第一和第二开关装置，音量控制可变电阻器由电动机从与预设可变电阻器的预设位置相对应的位置设定到期望位置，而不管其前一位置。通过在电源之后的期望时刻操作第三开关装置，可以在收听由扬声器产生的声音的同时调节预置可变电阻器。

5. 发明授权

US4399475A Tape recorder 失效
标题翻译：磁带录音机
公开(公告)号：US4399475A
公开(公告)日：1983-08-16
申请号：US252854
申请日：1981-04-10
申请人： Katsuro Shimomae
发明人： Katsuro Shimomae
IPC分类号： G11B5/54
CPC分类号： G11B5/54
摘要： A tape drive mechanism for a tape recorder is provided with a motor-driven drive gear. The tape drive mechanism includes first and second switch gears engageable with the drive gear for respectively switching the tape drive mechanism into a first and second mode of operation. First and second cam arrangements respectively convert the rotation of the first and second switch gears into a displacement of the magnetic head of the tape recorder relative to the magnetic tape. The drive gear when switched to the first mode displaces the magnetic head by the first cam arrangement, and when switched to the second mode displaces the magnetic head by the second cam arrangement. The first and second switch gears are each provided with a toothless portion for disengaging the drive gear in the first and second modes of operation respectively. First and second trigger mechanisms respectively retain the first and second switch gears in position in the first and second modes and also function to switch the tape drive mechanism into additional modes of operation.
摘要翻译：用于磁带录音机的磁带驱动机构设置有电动驱动驱动齿轮。带驱动机构包括与驱动齿轮接合的第一和第二开关齿轮，用于将带驱动机构分别切换成第一和第二操作模式。第一和第二凸轮装置分别将第一和第二开关齿轮的旋转转换成磁带记录器的磁头相对于磁带的位移。驱动齿轮切换到第一模式时，通过第一凸轮装置使磁头移位，当切换到第二模式时，通过第二凸轮装置使磁头移位。第一和第二开关齿轮分别设置有用于在第一和第二操作模式下分离驱动齿轮的无齿部分。第一和第二触发机构分别将第一和第二开关齿轮保持在第一和第二模式中的适当位置，并且还用于将带驱动机构切换到附加操作模式。

6. 发明授权

US4393274A AM Stereo receiver 失效
标题翻译： AM立体声接收机
公开(公告)号：US4393274A
公开(公告)日：1983-07-12
申请号：US293839
申请日：1981-08-18
申请人： Yukihiko Miyamoto
发明人： Yukihiko Miyamoto
IPC分类号： H04B1/10 , H04H1/00 , H04H40/36 , H04H5/00
CPC分类号： H04H20/49
摘要： An AM stereo receiver for receiving AM stereo broadcasting of an AM-PM or AM-FM system. Between an IF AM signal amplifier and an limiter is interposed a 5 or more frequency multiplier so that the frequency of a spurious signal radiated from the limiter may lie outside of the frequency range handled by the RF tuner.
摘要翻译： AM立体声接收机，用于接收AM-PM或AM-FM系统的AM立体声广播。在IF AM信号放大器和限幅器之间插入5个或更多个倍频器，使得从限幅器辐射的寄生信号的频率可能在RF调谐器处理的频率范围之外。

7. 发明授权

US4342966A Power amplifier circuitry 失效
标题翻译：功率放大器电路
公开(公告)号：US4342966A
公开(公告)日：1982-08-03
申请号：US174918
申请日：1980-08-04
申请人： Eijiro Tamura
发明人： Eijiro Tamura
IPC分类号： H03F1/32 , H03F3/20 , H03F3/30
CPC分类号： H03F3/3077 , H03F1/3217 , H03F3/3071
摘要： In a single-ended push-pull power amplifier circuit having a first transistor of a first driver stage, a second transistor of a first output stage where the first and second transistors are Darlington connected, a third transistor of a second driver stage and a fourth transistor of a second output stage, where the third and fourth transistors are also Darlington connected, first and second resistors are connected between the respective emitters of the first and second transistors and a common output terminal, third and fourth resistors are connected between the respective emitters of the third and fourth transistors and the common output terminal, and a bias circuit for providing a bias voltage of a fixed value between the bases of the first and third transistors, the improvement comprising at least two series circuits of resistors and constant voltage sources for passing the base currents of the second and fourth transistors between (a) the emitter of the first transistor and the emitter of the fourth transistor and (b) the emitter of the third transistor and the emitter of the second transistor respectively.
摘要翻译：在具有第一驱动级的第一晶体管的单端推挽功率放大器电路中，第一和第二晶体管是达林顿连接的第一输出级的第二晶体管，第二驱动级的第三晶体管和第四驱动级的第四晶体管晶体管的第二输出级，其中第三和第四晶体管也是达林顿连接的，第一和第二电阻连接在第一和第二晶体管的各个发射极和公共输出端之间，第三和第四电阻连接在相应的发射极之间的第三和第四晶体管和公共输出端子的偏置电路，以及用于在第一和第三晶体管的基极之间提供固定值的偏置电压的偏置电路，改进包括电阻器和恒定电压源的至少两个串联电路，在（a）第一晶体管的发射极和发射极之间传递第二和第四晶体管的基极电流和（b）第三晶体管的发射极和第二晶体管的发射极。

8. 发明授权

US4267605A Interference eliminator in communication receiver 失效
标题翻译：通信接收机中的干扰消除器
公开(公告)号：US4267605A
公开(公告)日：1981-05-12
申请号：US15058
申请日：1979-02-26
申请人： Mitsuo Matsuzawa , Hajime Yashita
发明人： Mitsuo Matsuzawa , Hajime Yashita
IPC分类号： H03D7/16 , H04B1/10 , H04B1/26
CPC分类号： H03D7/163 , H04B1/1027 , H04B1/26 , H04B2001/1054 , H04B2001/1063 , H04B2001/1072
摘要： In a communication receiver, a first mixing circuit, a first band-pass filter responsive to the output of the first mixing circuit, a second mixing circuit responsive to the output of the first band-pass filter, a second band-pass filter with a different center frequency from that of the first band-pass filter responsive to the output of the second mixing circuit, a first local oscillator, the output of which is applied to the first mixing circuit and a second local oscillator, the output of which is applied to the second mixing circuit. Various kinds of interference signals are eliminated by changing the output frequencies of the first and second local oscillators to thereby vary the effective bandwidth and center frequency of the signals which can pass through the receiver and thus eliminate interference. In addition, a third mixing circuit is responsive to the output of the second band-pass filter. The output of the third mixing circuit is applied to a notch filter, the notch frequency of which is effectively made variable by changing the frequency injected into the third mixing circuit and a demodulation circuit. Hence, by varying the effective notch frequency, further interference can be eliminated.
摘要翻译：在通信接收机中，第一混频电路，响应于第一混频电路的输出的第一带通滤波器，响应于第一带通滤波器的输出的第二混频电路，具有第一带通滤波器的第二带通滤波器，响应于第二混合电路的输出，与第一带通滤波器的中心频率不同的中心频率;第一本地振荡器，其输出被施加到第一混频电路;第二本地振荡器，其输出被施加到第二混合电路。通过改变第一和第二本地振荡器的输出频率来消除各种干扰信号，从而改变可以通过接收机的信号的有效带宽和中心频率，从而消除干扰。此外，第三混频电路响应于第二带通滤波器的输出。第三混合电路的输出被施加到陷波滤波器，其陷波频率通过改变注入第三混频电路的频率和解调电路而有效地变化。因此，通过改变有效陷波频率，可以消除进一步的干扰。

9. 发明授权

US4236253A Monostable multivibrator for use in pulse count demodulator or the like 失效
标题翻译：用于脉冲计数解调器等的单稳态多谐振荡器
公开(公告)号：US4236253A
公开(公告)日：1980-11-25
申请号：US74680
申请日：1979-09-12
申请人： Masaru Onishi , Yukihiko Miyamoto
发明人： Masaru Onishi , Yukihiko Miyamoto
IPC分类号： H03K3/284 , H03K3/017 , H03K3/0232 , H04L25/49 , H04B1/16 , H03D3/04
CPC分类号： H03K3/017 , H04L25/4902
摘要： In a monostable multivibrator including a gate circuit having at least two inputs where an input signal is applied to a first one of the two inputs and a feedback signal to the other input, a differentiator circuit responsive to the output from the gate circuit, a differential inverter including a current switching circuit where an output load is connected to the collector of the output transistor for deriving an output signal, the improvement comprising an AC grounded base transistor connected in series between the collector of the second transistor and the output load.Even when a low-pass filter is connected to the output load of the above multivibrator, the output signal thereof is stabilized which is important when the multivibrator is used in combination with a low-pass filter in an FM receiver pulse count demodulating circuit.
摘要翻译：在包括具有至少两个输入的门电路的单稳态多谐振荡器中，其中输入信号被施加到两个输入中的第一个输入，反馈信号被施加到另一个输入，微分电路响应于来自门电路的输出，差分包括电流切换电路的逆变器，其中输出负载连接到输出晶体管的集电极以导出输出信号，该改进包括串联连接在第二晶体管的集电极和输出负载之间的AC接地基极晶体管。即使当低通滤波器连接到上述多谐振荡器的输出负载时，其输出信号也稳定，这在多谐振荡器与FM接收机脉冲计数解调电路中的低通滤波器组合使用时是重要的。

10. 发明授权

US4232191A FM Receiving device 失效
标题翻译： FM接收设备
公开(公告)号：US4232191A
公开(公告)日：1980-11-04
申请号：US878797
申请日：1978-02-17
申请人： Takeshi Matsuzuka
发明人： Takeshi Matsuzuka
IPC分类号： H03D7/16 , H03G3/34 , H03J7/02 , H04B1/10 , H04H1/00 , H04H40/72 , H04H5/00
CPC分类号： H04H40/72 , H03D7/161 , H03G3/348 , H03J7/023
摘要： A double super heterodyne FM receiver having a first local oscillator for deriving a first intermediate frequency signal from an FM input signal, tuning means for varying the frequency of the first local oscillator to tune the FM receiver to a predetermined frequency, a second local oscillator for deriving a second intermediate frequency signal from the first intermediate frequency signal, an FM detector for demodulating the second intermediate frequency and means for processing the demodulated signal, means for deriving the direct current component of an output signal occurring at a point after the FM detector, first control means for controlling the frequency of the second oscillator in response to the direct current component so that the direct current component is reduced to substantially zero to thereby lessen shock noise during the tuning of the receiver, second control means responsive to the tuning means being operated to tune the FM receiver so that the control means controls the means for deriving the direct current component to thereby derive a first low frequency range as the direct current component, the control means also being responsive to the tuning means no longer being operated so that a second low frequency range less than the first low frequency range is derived as the direct current component. The receiver may also include a stereo demodulator whereby shock noise and accordingly multi-stage coupling capacitance in the output stages may be eliminated by feeding the direct current component back from a point after the stereo demodulator to control the frequency of the second oscillator.
摘要翻译：一种具有用于从FM输入信号导出第一中频信号的第一本地振荡器的双超外差FM接收机，用于改变第一本地振荡器的频率以将FM接收机调谐到预定频率的调谐装置，用于从所述第一中频信号得出第二中频信号，用于解调所述第二中频的FM检波器和用于处理所述解调信号的装置，用于导出在所述FM检波器之后的点发生的输出信号的直流分量的装置，第一控制装置，用于响应于直流分量控制第二振荡器的频率，使得直流分量减小到基本为零，从而在接收机的调谐期间减轻冲击噪声，第二控制装置响应调谐装置操作以调谐FM接收器，以便控制装置进行控制用于导出直流分量从而导出第一低频范围作为直流分量的装置，所述控制装置还响应于调谐装置不再被操作，使得小于第一低频范围的第二低频范围被导出为直流分量。接收机还可以包括立体声解调器，由此通过从立体声解调器之后的点馈送直流分量来控制第二振荡器的频率，可以消除输出级中的冲击噪声和相应的多级耦合电容。

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