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1.发明授权
公开(公告)号：US4326223A
公开(公告)日：1982-04-20
申请号：US34749
申请日：1979-04-30
Applicant: Kazuo Yamagiwa , Yukihiko Machida
Inventor： Kazuo Yamagiwa , Yukihiko Machida
CPC classification number: H03G11/002 , H03G7/00 , H03G9/18 , H04N5/923
Abstract: In apparatus for reproducing a video signal which is recorded on a recording medium with a luminance component thereof non-linearly pre-emphasized and the signal portions thereof greater than a predetermined level being clipped; there are provided a non-linear de-emphasizing circuit which non-linearly attenuates the reproduced luminance component in a manner substantially complementary to the amount of the non-linear pre-emphasis, a gain control element, for example, in the form of a transistor, having a variable gain, and a compensating circuit for substantially recovering the clipped signal portions upon reproduction of the video signal, and in which the compensating circuit increases the gain of the gain control element for the portions of the reproduced luminance component at the predetermined level. The compensating circuit desirably includes a switching diode connected at one terminal to the collector of the gain control transistor and to a reference voltage at the other terminal such that the diode is made conductive for the portions of the reproduced luminance component of the video signal at the predetermined level to increase the gain of the transistor at the collector thereof.
Abstract translation: 在用于再现记录在记录介质上的视频信号的装置中，其中具有非线性预加重的亮度分量并且其信号部分大于预定电平的信号被剪切; 提供了一种非线性去加重电路，其以与非线性预加重的量基本上互补的方式非线性衰减再现的亮度分量，增益控制元件例如以 晶体管，具有可变增益;以及补偿电路，用于在视频信号再现时基本上恢复限幅信号部分，并且其中补偿电路将预定的再现亮度分量的部分的增益控制元件的增益增大 水平。 补偿电路理想地包括连接到增益控制晶体管的集电极的一个端子处的开关二极管和另一端子处的参考电压，使得二极管对于视频信号的再现亮度分量的部分在 预定电平以增加晶体管在其集电极处的增益。
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公开(公告)号：US4021742A
公开(公告)日：1977-05-03
申请号：US652613
申请日：1976-01-26
Applicant: Yukihiko Machida
Inventor： Yukihiko Machida
Abstract: A phase compressor for a phase modulated signal comprises n phase suppressors (n is an integer greater than 2), each of which includes an adder and a limiter. The n phase suppressors are connected in series with one another. In this case, outputs from the limiters of nth, (n - 1)th, (n - 2)th, . . . . 2nd phase suppressors are individually supplied to the adders along with outputs from the (n - 1)th, (n - 2)th, . . . . 1st phase suppressors, respectively. A reference signal is supplied to the adder of the nth phase suppressor, by which a modulated phase angle of the phase modulated signal with a wide modulation index is phase-compressed by 1/.sub.n.sub.+1. The phase compressed signal is phase-demodulated by a phase demodulator without decreasing a signal-noise ratio.
Abstract translation: 用于相位调制信号的相位压缩器包括n个相位抑制器（n是大于2的整数），每个相位抑制器包括加法器和限幅器。 n相抑制器彼此串联连接。 在这种情况下，来自第n，（n-1），（n-2）th的限制器的输出。 。 。 。 第二相位抑制器与第（n-1），（n-2），...的输出分别提供给加法器。 。 。 。 第一相抑制器。 参考信号被提供给第n个相位抑制器的加法器，相位调制信号的相位调制信号的调制相位角被相位压缩1 / n + 1。 相位压缩信号由相位解调器进行相位解调而不降低信噪比。
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公开(公告)号：US4804894A
公开(公告)日：1989-02-14
申请号：US57781
申请日：1987-06-03
Applicant: Yukihiko Machida , Tadafusa Tomitaka
Inventor： Yukihiko Machida , Tadafusa Tomitaka
CPC classification number: H02P23/186 , Y10S388/901 , Y10S388/903 , Y10S388/91 , Y10S388/912 , Y10S388/915 , Y10S388/921 , Y10S388/93
Abstract: A motor rotation control apparatus employs a comb filter circuit operable to filter out a signal component and its higher harmonics. An error signal indicative of an error between actual and target conditions of rotation of the motor is applied to the comb filter circuit after its DC component is removed. The filtered signal and the error signal are added in a circuit which produces a control signal used to control the motor rotation. In another aspect of the invention, the error signal is divided into a first digital signal having upper bits of data having a predetermined bit number and a second digital signal having the remaining lower bits of data. The lower bits of data are delayed a predetermined time and added to the error signal to compensate for lower bits of data which may be ignored in a digital-to-analog converter operable, with a limited bit number, to provide a control analog signal used to control the motor rotation.
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公开(公告)号：US4559501A
公开(公告)日：1985-12-17
申请号：US564099
申请日：1983-12-22
Applicant: Tooru Akutagawa , Yukihiko Machida
Inventor： Tooru Akutagawa , Yukihiko Machida
Abstract: A signal translating circuit comprises first and second transistors connected to each other in such a manner that a collector of the first transistor is coupled with a base of the second transistor and an emitter of the second transistor is coupled with a base of the first transistor so as to form a negative feedback circuit arrangement, an input resistor connected between the base of the first transistor and a source of an input voltage signal for converting the input voltage signal into an input current signal to be supplied to the base of the first transistor, a biasing current source connected to the base of the first transistor, first and second current sources supplying the same currents and connected to the emitter of the first transistor and a collector of the second transistor, respectively, and means for deriving an output current signal from the collector of the second transistor.
Abstract translation: 信号转换电路包括彼此连接的第一和第二晶体管，使得第一晶体管的集电极与第二晶体管的基极耦合，并且第二晶体管的发射极与第一晶体管的基极耦合， 为了形成负反馈电路装置，连接在第一晶体管的基极和输入电压信号的源之间的输入电阻器，用于将输入电压信号转换为要提供给第一晶体管的基极的输入电流信号， 连接到第一晶体管的基极的偏置电流源，分别提供相同电流并连接到第一晶体管的发射极和第二晶体管的集电极的第一和第二电流源，以及用于从第一晶体管的基极导出输出电流信号的装置， 第二晶体管的集电极。
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公开(公告)号：US3997823A
公开(公告)日：1976-12-14
申请号：US516383
申请日：1974-10-21
Applicant: Yukihiko Machida
Inventor： Yukihiko Machida
CPC classification number: H02P6/182
Abstract: A brushless DC motor having a plurality of stator windings and a rotor made of a magnet is driven by energizing the stator windings successively, and in which signals induced in the plurality of stator windings resulting from the rotation of the rotor are detected as position signals of the rotor and at least one of the stator windings which corresponds to the position signal is supplied with a driving signal.
Abstract translation: 具有多个定子绕组的无刷直流电动机和由磁体制成的转子被依次激励定子绕组而被驱动，其中由转子产生的多个定子绕组中感应的信号被检测为位置信号 转子和对应于位置信号的至少一个定子绕组被提供有驱动信号。
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Patent Agency Ranking
公开(公告)号：US4821032A
公开(公告)日：1989-04-11
申请号：US812529
申请日：1985-12-23
Applicant: Keiichiro Shimada , Shinji Takada , Mitsugu Ishihara , Yukihiko Machida
Inventor： Keiichiro Shimada , Shinji Takada , Mitsugu Ishihara , Yukihiko Machida
CPC classification number: G11B31/00 , G11B27/031 , H04N5/765
Abstract: A communication system for video information apparatus for carrying out a communication between a video information apparatus and a peripheral apparatus arranged so that a communication is repeatedly carried out at a period synchronized with a signal of a vertical period having a constant phase relation relative to a vertical synchronizing signal.
Abstract translation: 一种用于执行视频信息装置和周边装置之间的通信的视频信息装置的通信系统，所述通信系统被布置为使得在与具有恒定相位关系的垂直周期的信号相对于垂直方向重复执行通信 同步信号
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公开(公告)号：US3949314A
公开(公告)日：1976-04-06
申请号：US519028
申请日：1974-10-29
Applicant: Yukihiko Machida
Inventor： Yukihiko Machida
Abstract: A reference carrier signal is combined with a phase modulated signal of the same basic frequency to generate an output signal the amplitude of which varies in accordance with the phase difference between the phase modulated signal and the reference carrier. The permissible modulation angle is increased by vectorally adding the phase modulated signal with a reference signal having a phase different from the comparison reference carrier. The vector sum signal is amplitude-limited so that the signal produced by the comparison will only be responsive to phase angle and not amplitude.
Abstract translation: 参考载波信号与相同基本频率的相位调制信号组合以产生其幅度根据相位调制信号和参考载波之间的相位差而变化的输出信号。 通过使用具有与比较参考载波不同的相位的参考信号对相位调制信号进行向量相加来增加允许的调制角度。 矢量和信号受到幅度限制，使得由比较产生的信号将仅响应于相位角而不是幅度。
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公开(公告)号：USRE34650E
公开(公告)日：1994-06-28
申请号：US692449
申请日：1991-04-05
Applicant: Keiichiro Shimada , Shinji Takada , Mitsugu Ishihara , Yukihiko Machida
Inventor： Keiichiro Shimada , Shinji Takada , Mitsugu Ishihara , Yukihiko Machida
IPC: G11B27/031 , G11B31/00 , H04N5/765 , H04Q9/00 , H04J3/02
CPC classification number: G11B31/00 , G11B27/031 , H04N5/765
Abstract: A communication system for video information apparatus for carrying out a communication between a video information apparatus and a peripheral apparatus arranged so that a communication is repeatedly carried out at a period synchronized with a signal of a vertical period having a constant phase relation relative to a vertical synchronizing signal.
Abstract translation: 一种用于执行视频信息装置和周边装置之间的通信的视频信息装置的通信系统，所述通信系统被布置为使得在与具有恒定相位关系的垂直周期的信号相对于垂直方向重复执行通信 同步信号
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公开(公告)号：US4823206A
公开(公告)日：1989-04-18
申请号：US86789
申请日：1987-08-19
Applicant: Shoji Nemoto , Yukihiko Machida
Inventor： Shoji Nemoto , Yukihiko Machida
IPC: G11B5/588 , G11B15/467 , G11B21/10 , G11B27/10 , H04N5/782
CPC classification number: G11B15/4678 , G11B5/588
Abstract: In a video signal recording and/or reproducing apparatus including four magnetic heads mounted on a rotary drum for forming four parallel recording tracks in a repeating sequence on a recording medium with each track having an azimuth gap angle different from the azimuth gap angles of the next adjacent tracks; pilot signals having different frequencies are recorded in a superimposed manner upon the information signals recorded by the four magnetic heads, respectively, and, upon reproducing, tracking control is effected so as to ensure that the magnetic heads which recorded the pilot signals with different respective frequencies are used to reproduce the signals recorded in the respective recording tracks so that a period of a timing signal, for example, a horizontal synchronizing signal, contained in the reproduced signal will not be disturbed upon switching from one to another of the magnetic heads in the reproducing mode.
Abstract translation: 在包括安装在旋转磁鼓上的四个磁头的视频信号记录和/或再现装置中，用于在记录介质上以重复序列形成四个并行记录磁道，每个磁道具有不同于下一个方位角间隙角的方位角间隙角 相邻轨道; 具有不同频率的导频信号分别被记录在由四个磁头记录的信息信号上，并且在再现时进行跟踪控制，以便确保记录具有不同频率的导频信号的磁头 用于再现记录在各个记录磁道中的信号，使得包含在再现信号中的定时信号，例如水平同步信号的周期，在从磁头中的一个切换到另一个磁头时不会受到干扰 再现模式。
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公开(公告)号：US4713702A
公开(公告)日：1987-12-15
申请号：US732004
申请日：1985-05-06
Applicant: Mitsugu Ishihara , Yukihiko Machida
Inventor： Mitsugu Ishihara , Yukihiko Machida
CPC classification number: H04L5/1492 , H04L5/16
Abstract: A data communication apparatus of a start-stop synchronizing system in which a bidirectional data communication between a master apparatus (10) and a slave apparatus (20) can be carried out through a single communication line (30). The transmission period of the master apparatus (10) and the transmission period of the slave apparatus (20) are formed as one block and this one block is repeated. Start signals X.sub.1 and X.sub.2 for use in transmitting and receiving data are transmitted only from the master apparatus (10). Since it is sufficient to provide a single communication line between the two apparatus, the construction of the system can be simplified.
Abstract translation: PCT No.PCT / JP84 / 00425 Sec。 371日期1985年5月6日 102（e）日期1985年5月6日PCT提交1984年9月5日PCT公布。 WO89 / 01168 PCT出版物 日期：1985年3月14日。一种启动 - 停止同步系统的数据通信装置，其中可以通过单个通信线路（30）执行主设备（10）和从设备（20）之间的双向数据通信， 。 主设备（10）的发送周期和从设备（20）的发送周期被形成为一个块，并且重复该一个块。 用于发送和接收数据的起始信号X1和X2仅从主设备（10）发送。 由于在两个装置之间提供单个通信线路就足够了，因此可以简化系统的构造。
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