公开(公告)号：US4361880A

公开(公告)日：1982-11-30

申请号：US156775

申请日：1980-06-04

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Tsuyoshi Ono ,  Fumiaki Ohno ,  Yukihiro Kishima ,  Yutaka Morita

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Tsuyoshi Ono ,  Fumiaki Ohno ,  Yukihiro Kishima ,  Yutaka Morita

IPC分类号： G11B3/085 ,  G11B3/095 ,  G11B17/06

CPC分类号： G11B3/0957 ,  G11B3/08512

摘要： A pickup arm is equipped with a photo sensor assembly for detecting non-recorded portions on a disk. The sensor is located in such a position that horizontal distance between the stylus tip and the detecting point of the sensor measured in the direction of the radius of the turntable is substantially constant throughout the possible rotational angle of the arm. The rotational angle of the arm is measured and is modified by a given angle corresponding to the above mentioned distance. When this distance deviates from a standard value on replacement of the same with another, the variation may be readily corrected by manipulating a potentiometer. Prior to performing an automatic playback, the disk is scanned by the sensor and signals indicative of the arm angles corresponding to the non-recorded portions are stored. After scanning, the arm is controlled by comparing the actual angle of the arm with the prestored angles, to place the stylus on a right position on the disk to perform automatic playback in accordance with programmed information.

摘要翻译： 拾取臂配备有用于检测盘上未记录部分的光传感器组件。 传感器位于这样一个位置上，即在手臂半径的方向上测量的触针尖端和传感器的检测点之间的水平距离在臂的可能的旋转角度内基本上是恒定的。 测量臂的旋转角度，并将其对应于上述距离的给定角度进行修改。 当该距离在与另一个更换相同时偏离标准值时，可以通过操纵电位计来容易地校正变化。 在执行自动重放之前，通过传感器扫描盘，并且存储指示对应于未记录部分的臂角度的信号。 扫描后，通过将手臂的实际角度与预先存储的角度进行比较来控制手臂，以将触控笔放置在磁盘上的正确位置，以根据编程信息执行自动播放。

公开(公告)号：US4342110A

公开(公告)日：1982-07-27

申请号：US165372

申请日：1980-07-02

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Fumiaki Ohno ,  Tsuyoshi Ono ,  Yukihiro Kishima ,  Yutaka Morita

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Fumiaki Ohno ,  Tsuyoshi Ono ,  Yukihiro Kishima ,  Yutaka Morita

IPC分类号： G11B3/28 ,  G11B3/085 ,  G11B3/095 ,  G11B3/12 ,  G11B17/06

CPC分类号： G11B3/0957 ,  G11B3/08512 ,  G11B3/127

摘要： A record disc playing apparatus comprises a horizontal drive motor for imparting a horizontal rotational force to a tone arm an address signal generating device for generating an address signal corresponding to a horizontal rotational angle position of the tone arm and a control device including a memory device for storing the magnitude of an inside force to be produced on the tone arm in correspondence with the horizontal rotational angle position of the tone arm. The address signal generating device supplies the generated address signal to the control device. The control device reads out the magnitude of the inside force from the memory device corresponding to the supplied address signal, produces a signal for cancelling the inside force at the rotational angle position of the tone arm corresponding to the read out magnitude of the inside force and supplies the same to the horizontal drive motor.

摘要翻译： 记录盘播放装置包括：水平驱动电动机，用于向音调臂施加水平旋转力;地址信号发生装置，用于产生对应于音调臂的水平旋转角度位置的地址信号;以及控制装置，包括：存储装置， 与音调臂的水平旋转角位置对应地存储要产生的音调臂上的内力的大小。 地址信号发生装置将产生的地址信号提供给控制装置。 控制装置根据所提供的地址信号读出来自存储装置的内力的大小，产生用于消除对应于内力的读出量的音调臂的旋转角度位置处的内力的信号， 提供相同的水平驱动电机。

公开(公告)号：US4342108A

公开(公告)日：1982-07-27

申请号：US193812

申请日：1980-10-03

申请人： Masatsugu Kitamura ,  Tsuyoshi Ono ,  Hideo Onoye

发明人： Masatsugu Kitamura ,  Tsuyoshi Ono ,  Hideo Onoye

IPC分类号： G11B3/085 ,  G11B3/095 ,  G11B21/08 ,  G11B3/08

CPC分类号： G11B3/0952

摘要： A tone arm control system includes first and second manually operated keys for providing input signals to a control circuit. The control circuit detects which one of the keys is operated and drives a vertical motor in the tone-arm upward direction and subsequently drives a horizontal motor in a tone-arm horizontal direction depending on which one of the keys is detected as being operated. The control circuit includes a counter which starts counting clock pulses to detect when a predetermined count is reached. During the predetermined count period the horizontal motor is energized at a low voltage to move the tone arm at a relatively low speed. When the clock count exceeds the predetermined value the speed of the tone arm is increased to allow it to speedily approach a desired position located relatively remote from the tone arm.

摘要翻译： 音臂控制系统包括用于向控制电路提供输入信号的第一和第二手动操作键。 控制电路检测哪个键被操作，并且在色调臂向上方向上驱动垂直电动机，随后根据检测到哪个键被操作来驱动音调臂水平方向的水平电动机。 控制电路包括计数器，其开始计数时钟脉冲以检测何时达到预定计数。 在预定计数期间，水平电机以低电压通电，以相对较低的速度移动音臂。 当时钟计数超过预定值时，增加音臂的速度，使其能够快速接近相对远离音调臂的期望位置。

公开(公告)号：US4367498A

公开(公告)日：1983-01-04

申请号：US164162

申请日：1980-06-30

申请人： Masatsugu Kitamura ,  Hideo Onoye

发明人： Masatsugu Kitamura ,  Hideo Onoye

IPC分类号： G11B15/00 ,  G11B15/087 ,  G11B27/22 ,  G11B15/16 ,  G11B15/52

CPC分类号： G11B15/087 ,  G11B15/005 ,  G11B27/22

摘要： A tape reproducing system selectively reproduces programs recorded on a recording tape wound on supply and takeup reels and drives the reels at selected fast forward and rewind speeds so that the rotation speed of said reels varies nonlinearly as a function of tape diameter wound on one of said reels. To detect inter-program pauses between programs to replay the recorded programs, the duration of each sensed pause is detected. A memory stores a set of data so each datum of the set represents tape speed as a function of the varying speed of one of the reels. The stored data are read out of the memory in response to the detected rotational speed of one reel. The detected duration is corrected in response to data readout of the memory. The corrected duration is compared with a reference value to generate a control signal for replaying the recorded programs at a playback speed.

摘要翻译： 磁带再现系统选择性地再现记录在卷绕在供给和卷绕卷轴上的记录带上的程序，并且以所选择的快进和快退速度驱动卷轴，使得所述卷轴的旋转速度随着卷绕在所述卷轴之一上的带直径的函数而非线性地变化 卷轴 为了检测程序之间的程序间暂停以重放记录的程序，检测每个感测到的暂停的持续时间。 存储器存储一组数据，因此集合的每个数据表示作为卷轴之一的变化速度的函数的磁带速度。 响应于检测到的一个卷轴的转速，将存储的数据从存储器中读出。 响应于存储器的数据读出校正检测到的持续时间。 校正的持续时间与参考值进行比较以产生用于以回放速度重放所记录的节目的控制信号。

公开(公告)号：US4258397A

公开(公告)日：1981-03-24

申请号：US41821

申请日：1979-05-23

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

IPC分类号： G11B5/035 ,  H03G3/20 ,  G11B27/36 ,  G11B5/02

CPC分类号： H03G3/3026 ,  G11B5/035

摘要： An automatic recording level controlling circuit comprises an audio test signal oscillator, a variable loss attenuation circuit, level detecting circuitry and a control circuit for controlling the attenuation factor of the variable loss attenuation circuit in accordance with the output of the level detecting circuitry. The level of a reproduced signal corresponding to the test signal is detected to see the deviation from a reference level so that the attenuation factor of the variable loss attenuation circuit is controlled in such a manner that the level of the reproduced signal is as close to the reference level as possible.

摘要翻译： 自动记录电平控制电路包括音频测试信号振荡器，可变损耗衰减电路，电平检测电路和用于根据电平检测电路的输出控制可变损耗衰减电路的衰减因子的控制电路。 检测与测试信号相对应的再现信号的电平，以看到与参考电平的偏差，使得可变损耗衰减电路的衰减因子被控制为使得再现信号的电平接近于 参考级别尽可能。

公开(公告)号：US4220979A

公开(公告)日：1980-09-02

申请号：US24875

申请日：1979-03-28

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

IPC分类号： G11B5/027 ,  G11B5/03 ,  G11B5/035 ,  G11B5/47

CPC分类号： G11B5/03 ,  G11B5/035

摘要： An automatic bias level setting circuit for tape recorders includes a variable loss attenuator for stepwisely increasing the level of a high frequency bias signal which is superposed on a constant amplitude audio test signal. The recorded signal is detected by means of an envelope detector coupled to the playback head and fed into a resettable integrator for integrating the input signal in response to each stepwise variation of the signal to generate a series of sawtooth waves. The output of the integrator is coupled to a maximum peak detector to detect the maximum peak point of the recorded test signal to determine an optimum bias level in relation to the detected peak point.

摘要翻译： 用于磁带录像机的自动偏置电平设置电路包括一个可变损耗衰减器，用于逐步增加重叠在恒定幅度音频测试信号上的高频偏置信号的电平。 记录的信号通过耦合到重放头的包络检测器被检测，并被馈送到可复位积分器，用于响应于信号的每个逐步变化来积分输入信号以产生一系列锯齿波。 积分器的输出耦合到最大峰值检测器以检测记录的测试信号的最大峰值点，以确定相对于检测到的峰值点的最佳偏置电平。

公开(公告)号：US4279005A

公开(公告)日：1981-07-14

申请号：US41822

申请日：1979-05-23

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

IPC分类号： G11B5/035 ,  H03G5/16 ,  G11B5/47 ,  G11B5/45

CPC分类号： H03G5/165 ,  G11B5/035

摘要： In order to compensate for differences in magnetic properties of recording tapes, a first and second audio test signals of different frequencies are generated by a variable frequency test signal source, recorded on a magnetic tape and reproduced to represent the magnetic properties of the tape at the different frequencies. The reproduced first test signal is stored in a microcomputer for comparison with the level of the subsequently reproduced second test signal to detect the difference therebetween for making an adjustment of the level of the second test signal in accordance with the detected difference through the use of a level adjusting device. The latter is thereafter held adjusted to the value at which the two test signals have an equal level of reproduction.

摘要翻译： 为了补偿记录带的磁特性差异，通过可变频率测试信号源产生不同频率的第一和第二音频测试信号，记录在磁带上并被再现以表示磁带的磁特性 不同的频率。 将再现的第一测试信号存储在微型计算机中以与随后再现的第二测试信号的电平进行比较，以检测它们之间的差异，以根据检测到的差异来调整第二测试信号的电平，通过使用 电平调节装置。 之后，后者被调整到两个测试信号具有相同的再现水平的值。

公开(公告)号：US4276604A

公开(公告)日：1981-06-30

申请号：US041820

申请日：1979-05-23

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Masami Yamazaki

IPC分类号： G11B5/027 ,  G11B20/04 ,  H03G3/20 ,  H03G3/30

CPC分类号： H03G3/3026 ,  H03G3/3005

摘要： An automatic attenuation circuit comprises a variable loss attenuation circuit that drives circuitry for detecting the level of the output signal of the variable loss attenuation circuit. The level detector drives a periodically reset integrator, which in turn feeds a signal to a comparator, also responsive to a reference. A control circuit responsive to the output signal of the comparator controls the attenuation factor of the variable loss attenuation circuit. The control circuit, which may be a microcomputer, is so programmed that the attenuation factor of the variable loss attenuation circuit is stepwisely increased until the level of the output signal of the variable loss attenuation circuit becomes equal to or below a predetermined level.

摘要翻译： 自动衰减电路包括可变损耗衰减电路，其驱动用于检测可变损耗衰减电路的输出信号电平的电路。 电平检测器驱动周期性复位积分器，该积分器又响应于参考，将信号馈送到比较器。 响应于比较器的输出信号的控制电路控制可变损耗衰减电路的衰减系数。 可以是微型计算机的控制电路被编程为使得可变损耗衰减电路的衰减因子逐步增加，直到可变损耗衰减电路的输出信号的电平变得等于或低于预定电平。

公开(公告)号：US4363043A

公开(公告)日：1982-12-07

申请号：US169474

申请日：1980-07-16

申请人： Masatsugu Kitamura ,  Hideo Onoye ,  Hiroki Shimizu

发明人： Masatsugu Kitamura ,  Hideo Onoye ,  Hiroki Shimizu

IPC分类号： G11B15/087 ,  G11B15/00 ,  G11B27/10 ,  G11B27/30 ,  G11B17/00

CPC分类号： G11B15/005 ,  G11B27/107 ,  G11B27/3018 ,  G11B2220/90

摘要： An automatic skipping control circuit includes a voltage controlled, variable frequency filter having a passband frequency variable in accordance with the voltage of a frequency control signal applied thereto. This filter is responsive to an output signal from a transducer head representative of materials recorded in a tape where a skip-mark signal is recorded in selected portions. The filter is normally tuned to the frequency of the skip mark signal when the tape is transported at normal playing speed. Upon the leading edge of a skip-mark recorded portion reaching the transducer head, the filter provides an output signal which causes the tape to be driven in the fast-forward mode, resulting in an increase in the frequency of the skip-mark signal detected by the transducer head. The frequency control signal is generated during this fast-forward mode to vary the passband frequency of the filter to correspond to the increased frequency of the detected skip-mark signal. Since the speed of the tape measured at the transducer head during the fast-forward mode varies as a function of the diameter of the convolutions of the tape wound on a takeup reel, the voltage of the frequency control signal is varied as a function of this diameter to keep track of the varying frequency of the detected skip-mark signal.

摘要翻译： 自动跳跃控制电路包括具有根据施加到其上的频率控制信号的电压而具有通带频率可变的电压控制的可变频率滤波器。 该滤波器响应来自代表记录在磁带中的材料的传感器头的输出信号，其中跳过标记信号被记录在选定部分中。 当磁带以正常播放速度传输时，滤波器通常调谐到跳过标记信号的频率。 在跳跃标记记录部分到达换能器头部的前缘时，滤波器提供输出信号，该输出信号使得磁带以快进模式被驱动，导致检测到的跳过标记信号的频率增加 由换能器头。 在该快进模式期间产生频率控制信号以改变滤波器的通带频率以对应于检测到的跳过标记信号的增加的频率。 由于在快进模式期间在换能器头处测量的带的速度作为卷绕在卷取卷轴上的带的卷绕直径的函数而变化，所以频率控制信号的电压作为该函数而变化 以跟踪检测到的跳过标记信号的变化频率。

公开(公告)号：US3936618A

公开(公告)日：1976-02-03

申请号：US448732

申请日：1974-03-06

申请人： Nobuaki Takahashi ,  Hideo Onoye ,  Teruo Muraoka ,  Masao Kasuga

发明人： Nobuaki Takahashi ,  Hideo Onoye ,  Teruo Muraoka ,  Masao Kasuga

IPC分类号： H04S3/00 ,  G11B3/00 ,  G11B3/74

CPC分类号： H04S3/006

摘要： A multichannel record disc reproducing system and apparatus comprises a phase-locked loop for demodulating an angle-modulated wave signal in a multiplexed signal picked up from a multichannel record disc. A synchronous detector compares the phases of the angle-modulated wave signal and an output signal of a voltage-controlled oscillator in the phase-locked loop. The detector produces an output signal when there is a noise component in the angle-modulated wave signal. A circuit, controlled by the output of the synchronous detector, provides a demodulated output signal having at least one attenuated frequency band, in which a noise component is greatly reduced.

摘要翻译： 多通道记录盘再现系统和装置包括用于解调从多声道记录盘拾取的复用信号中的角度调制波信号的锁相环。 同步检波器将锁相环中的角度调制波信号的相位与压控振荡器的输出信号进行比较。 当角度调制波信号中存在噪声分量时，检测器产生输出信号。 由同步检测器的输出控制的电路提供具有至少一个衰减频带的解调输出信号，其中噪声分量大大降低。