公开(公告)号：US4041244A

公开(公告)日：1977-08-09

申请号：US628733

申请日：1975-11-04

申请人： Osamu Yamazaki ,  Sukeichi Miki ,  Tsuneo Takezaki

发明人： Osamu Yamazaki ,  Sukeichi Miki ,  Tsuneo Takezaki

IPC分类号： H03C1/04 ,  H04H20/89 ,  H04H5/00

CPC分类号： H04H20/88 ,  H04H20/89

摘要： A stereophonic signal generator for generating a composite signal for effectively attenuating undesired spurious signals in a modulated signal, e.g., in a four channel stereophonic signal. In the generator, the main spurious signal, which is a spurious signal most closely adjacent to a given or desired frequency band for a necessary signal, is cancelled by a cancellation signal which is in a compensation relationship with the main spurious signal. Thus, residual spurious signals are attenuated easily by simple filters without degrading the necessary signals.

摘要翻译： 一种立体声信号发生器，用于产生复合信号，用于有效地衰减调制信号中的不想要的寄生信号，例如在四声道立体声信号中。 在发生器中，作为与必要信号的给定或期望频带最接近的寄生信号的主寄生信号被与主寄生信号处于补偿关系的抵消信号抵消。 因此，残留寄生信号通过简单的滤波器容易地衰减，而不会降低必要的信号。

公开(公告)号：US4039752A

公开(公告)日：1977-08-02

申请号：US615088

申请日：1975-09-19

申请人： Masashi Kanno ,  Sukeichi Miki ,  Tsuneo Takezaki ,  Syuichi Ninomiya

发明人： Masashi Kanno ,  Sukeichi Miki ,  Tsuneo Takezaki ,  Syuichi Ninomiya

IPC分类号： H04H20/89 ,  H04H5/00 ,  H04J3/02

CPC分类号： H04H20/89

摘要： This invention provides an FM four channel stereo signal generator for generating from four stereophonically related audio signals an FM four channel stereo signal expressed by (S.sub.1 +S.sub.2 +S.sub.3 +S.sub.4) + (S.sub.1 +S.sub.2 -S.sub.3 -S.sub.4)sin.omega.t+(S.sub.1 -S.sub.2 -S.sub.3 +S.sub.4)cos.omega.t+pilot signals with or without (S.sub.1 -S.sub.2 +S.sub.3 -S.sub.4)sin2.omega.t. The generator includes a matrixing device for producing from the four audio signals four matrixed audio signals (aS.sub.1 +bS.sub.2 +bS.sub.3 +cS.sub.4), (bS.sub.1 +aS.sub.2 +CS.sub.3 +bS.sub.4), (bS.sub.1 +cS.sub.2 +aS.sub.3 +bS.sub.4) and (cS.sub.1 +bS.sub.2 bS.sub.3 +aS.sub.4), where 2b=a+c; a main gating circuit for producing from the audio or the matrixed audio signals a main gated signal including a four channel stereo signal and harmonics; and a subsidiary gating circuit for producing from the audio or the matrixed audio signals a subsidiary gated signal corresponding to a harmonic nearest the four channel stereo signal, whereby by combining the audio or the matrixed audio signals, the main and the subsidiary gated signals and the pilot signals, and by passing the thus combined signal through a low pass filter, the desired four channel stereo signal of high quality can be easily produced.

公开(公告)号：US4059791A

公开(公告)日：1977-11-22

申请号：US682176

申请日：1976-04-30

申请人： Masabumi Serizawa ,  Tsuneo Takezaki

发明人： Masabumi Serizawa ,  Tsuneo Takezaki

IPC分类号： H03B5/12 ,  H03J3/18 ,  H03J5/02 ,  H02M3/335

CPC分类号： H03J3/185

摘要： In a voltage supply circuit for voltage-dependent capacitor diode tuning, a d.c. voltage is produced by a.c.-d.c. conversion of an a.c. voltage which is obtained by amplifying an a.c. signal from an oscillator with the aid of a transistor amplifier of the series-feedback type having an amplifying transistor having an amplification factor depending on a variable reactance coupled to an emitter of the amplifying transistor. The variable reactance controls the amount of negative feedback to obtain the corresponding gain of the amplifier. The degree of amplification decreases as the amount of the negative feedback increases, so that the output d.c. voltage will be stable especially in a low voltage region.

摘要翻译： 在用于电压相关电容二极管调谐的电压电路中， 电压由a.c.-d.c. 转换a.c. 通过放大a.c. 借助于具有串联反馈型晶体管放大器的振荡器的信号具有放大晶体管，放大晶体管具有取决于耦合到放大晶体管的发射极的可变电抗的放大系数。 可变电抗控制负反馈量以获得放大器的相应增益。 放大程度随着负反馈量的增加而减小，从而输出直流。 电压将稳定，特别是在低电压区域。

公开(公告)号：US4296375A

公开(公告)日：1981-10-20

申请号：US29714

申请日：1979-04-13

申请人： Tsuneo Takezaki

发明人： Tsuneo Takezaki

IPC分类号： G01R19/165 ,  G01R13/40 ,  G01R19/04 ,  G09G3/04

CPC分类号： G01R13/405 ,  G01R19/04

摘要： A level indicator comprising a plurality of comparators for comparing an analog signal with a respective value of graduated reference voltages generates one or more output signals in response to the analog signal exceeding each reference voltage. A plurality of storage circuits is provided each associated with a respective comparator and with a respective one of successively arranged luminous elements. Each storage circuit is responsive to the output of the associated comparator and delivers a signal for the associated luminous element, which signal may also be used to inhibit the passage of the outputs of the other storage circuits of descending order.

摘要翻译： 包括用于将模拟信号与分级参考电压的相应值进行比较的多个比较器的电平指示器响应于超过每个参考电压的模拟信号而产生一个或多个输出信号。 提供了多个存储电路，每个存储电路与相应的比较器相关联，并且具有相应的连续配置的发光元件。 每个存储电路响应于相关联的比较器的输出并递送相关联的发光元件的信号，该信号也可以用于抑制其它存储电路的输出的降序。