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61. 发明授权

US4659949A Phase-locked loop circuit 失效
标题翻译：锁相环电路
公开(公告)号：US4659949A
公开(公告)日：1987-04-21
申请号：US817506
申请日：1986-01-09
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： H03K5/26 , H03D13/00 , H03L7/085 , H03L7/191 , G01R25/00 , H03L7/00
CPC分类号： H03L7/191 , H03L7/085
摘要： A phase comparing circuit can be made as a semiconductor integrated circuit for inclusion in a phase-locked loop for generating a phase-locked output signal synchronized with a pilot signal. The phase comparing circuit generates first and second reference signals with reverse polarity about their DC level from the pilot signal and first and second base signals having a DC level substantially the same as the DC level of the reference signals. First and second switching signals with reverse polarity about their DC level are generated from the phase-locked output signal. A plurality of bipolar transistors are operated by the switching signals alternately to provide first and third current paths and second and fourth current paths connecting the reference and base signals to cancel the DC components therefrom. A voltage deriving circuit provides a control signal current path that connects the first and third current paths and the second and fourth current paths. The control signal current path includes two control signal output terminals that have two series-connected resistors between them and a bias potential connected between the output terminals. The control signal at the output terminals represents the difference in phase between the switching and the pilot signals and is used to generate a locking signal for controlling a voltage-controlled oscillator which provides the phase-locked output signal.
摘要翻译：可以将相位比较电路作为半导体集成电路，以包含在用于产生与导频信号同步的锁相输出信号的锁相环中。相位比较电路从导频信号产生与其直流电平相反的极性的第一和第二参考信号，以及具有与参考信号的直流电平基本相同的直流电平的第一和第二基本信号。从锁相输出信号产生具有与其直流电平相反的极性的第一和第二开关信号。多个双极晶体管交替地由切换信号操作，以提供第一和第三电流路径，以及连接基准信号和基准信号的第二和第四电流路径以从其中消除DC分量。电压导出电路提供连接第一和第三电流路径以及第二和第四电流路径的控制信号电流路径。控制信号电流路径包括两个控制信号输出端子，它们之间具有两个串联的电阻和连接在输出端子之间的偏置电位。输出端子处的控制信号表示开关与导频信号之间的相位差，用于产生用于控制提供锁相输出信号的压控振荡器的锁定信号。

62. 发明授权

US4629914A Phase comparing circuit 失效
标题翻译：相位比较电路
公开(公告)号：US4629914A
公开(公告)日：1986-12-16
申请号：US611503
申请日：1984-05-17
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： H03K5/26 , H03D13/00 , H03L7/085 , H03L7/191 , H03L7/00
CPC分类号： H03L7/191 , H03L7/085
摘要： A phase comparing circuit can be made as a semiconductor integrated circuit for inclusion in a phase-locked loop for generating a phase-locked output signal synchronized with a pilot signal. The phase comparing circuit generates first and second reference signals with reverse polarity about their DC level from the pilot signal and first and second base signals having a DC level substantially the same as the DC level of the reference signals. First and second switching signals with reverse polarity about their DC level are generated from the phase-locked output signal. A plurality of bipolar transistors are operated by the switching signals alternately to provide first and third current paths and second and fourth current paths connecting the reference and base signals to cancel the DC components therefrom. A control signal generating circuit provides a control signal current path that connects the first and third current paths and the second and fourth current paths. The control signal current path includes two control signal output terminals that have two series-connected resistors between them and a bias potential connected between the output terminals. The control signal at the output terminals represents the difference in phase between the switching and the pilot signals and is used to generate a locking signal for controlling a voltage-controlled oscillator which provides the phase-locked output signal.
摘要翻译：可以将相位比较电路作为半导体集成电路，以包含在用于产生与导频信号同步的锁相输出信号的锁相环中。相位比较电路从导频信号产生与其直流电平相反的极性的第一和第二参考信号，以及具有与参考信号的直流电平基本相同的直流电平的第一和第二基本信号。从锁相输出信号产生具有与其直流电平相反的极性的第一和第二开关信号。多个双极晶体管交替地由切换信号操作，以提供第一和第三电流路径，以及连接基准信号和基准信号的第二和第四电流路径以从其中消除DC分量。控制信号发生电路提供连接第一和第三电流路径以及第二和第四电流路径的控制信号电流路径。控制信号电流路径包括两个控制信号输出端子，它们之间具有两个串联的电阻和连接在输出端子之间的偏置电位。输出端子处的控制信号表示开关与导频信号之间的相位差，用于产生用于控制提供锁相输出信号的压控振荡器的锁定信号。

63. 发明授权

US4578807A FM stereo multiplex demodulator 失效
标题翻译： FM立体声多路解调器
公开(公告)号：US4578807A
公开(公告)日：1986-03-25
申请号：US618218
申请日：1984-06-07
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： H03D1/22 , H04H1/00 , H04H20/47 , H04H40/45 , H04H5/00
CPC分类号： H04H20/47 , H03D1/2227
摘要： A composite FM stereo multiplex signal is demodulated using a double-balanced switching circuit cooperating with current mirror circuits so that demodulation and separation of the multiplexed signals occurs in the current domain. The switching circuit receives a switching signal that is a sub-carrier frequency of the FM stereo multiplex carrier signal, and the switching circuit is provided with the composite stereo signal as a output current signal from a first current mirror circuit. Outputs from the switching circuit are then fed to respective left and right channel current mirror circuits where the current output signals therefrom are substracted in respective current difference circuits from the composite current output signal produced by the first current mirror circuit, thereby producing left and right channel stereo signals having predetermined separation and signal-to-noise ratio.
摘要翻译：复合FM立体声多路复用信号使用与电流镜像电路协作的双平衡切换电路进行解调，使得在当前域中发生多路复用信号的解调和分离。切换电路接收作为FM立体声多路复用载波信号的副载波频率的切换信号，并且切换电路被提供有复合立体声信号作为来自第一电流镜像电路的输出电流信号。然后将来自开关电路的输出馈送到相应的左，右沟道电流镜电路，其中电流输出信号从各电流差电路中减去与第一电流镜电路产生的复合电流输出信号相反，从而产生左右通道立体声信号具有预定的分离和信噪比。

64. 发明授权

US4567444A Current mirror circuit with control means for establishing an input-output current ratio 失效
标题翻译：具有用于建立输入 - 输出电流比的控制装置的电流镜电路
公开(公告)号：US4567444A
公开(公告)日：1986-01-28
申请号：US612893
申请日：1984-05-22
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： G05F3/26 , H03F3/34 , H03F3/343 , H03F3/45
CPC分类号： H03F3/343 , G05F3/265
摘要： A current mirror circuit is formed of input and output transistors of the same polarity having emitters commonly connected to a reference potential and bases connected in common, the collector of the input transistor is connected to ground through a constant current source which initially establishes the input current, a differential amplifier compares the collector current of the input transistor to a desired input current as determined by a bias voltage applied to one input of the differential amplifier and provides negative feedback to maintain the desired input current, thereby to maintain a desired output-to-input current ratio.
摘要翻译：电流镜电路由相同极性的输入和输出晶体管形成，具有共同连接到参考电位的发射极和共同连接的基极，输入晶体管的集电极通过恒定电流源连接到地，初始地建立输入电流差分放大器将输入晶体管的集电极电流与施加到差分放大器的一个输入的偏置电压所确定的期望的输入电流进行比较，并提供负反馈以维持期望的输入电流，从而保持期望的输出到输入电流比。

65. 发明授权

US4318050A AM Detecting circuit 失效
标题翻译： AM检测电路
公开(公告)号：US4318050A
公开(公告)日：1982-03-02
申请号：US126018
申请日：1980-02-29
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： H03D1/06 , H03D1/18
CPC分类号： H03D1/06 , H03D1/18
摘要： A single-ended push-pull amplifier converts a single-ended input into a balanced signal which, after amplification, is fed to the bases of alternately operating transistors, and the resulting inverted, or out-of-phase output currents of the inverting transistors are fed back to almost exactly equal the signal current fed to the amplifier. The base drives required to produce such fed-back currents are also fed to the bases of output driver circuit transistors where a full-wave rectified replica of the input signal is produced.
摘要翻译：单端推挽放大器将单端输入转换为平衡信号，在平衡信号中，放大后，它被馈送到交替工作的晶体管的基极，反相晶体管的反相或异相输出电流被反馈到几乎完全等于馈送到放大器的信号电流。产生这种反馈电流所需的基极驱动器也被馈送到输出驱动电路晶体管的基极，其中产生输入信号的全波整流副本。

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