公开(公告)号：US4672469A

公开(公告)日：1987-06-09

申请号：US644210

申请日：1984-08-24

申请人： Yasuomi Namiki ,  Koji Arai

发明人： Yasuomi Namiki ,  Koji Arai

IPC分类号： G11B15/087 ,  G11B15/12 ,  G11B15/18 ,  G11B27/00 ,  H04N9/79 ,  H04N9/87 ,  H04N9/89 ,  H04N9/83 ,  H04N5/93

CPC分类号： H04N9/7921 ,  G11B27/005 ,  H04N9/87 ,  H04N9/89 ,  G11B15/087 ,  G11B15/125 ,  G11B15/1875 ,  G11B2220/90

摘要： A delay time adjusting system comprises a comparing circuit for comparing levels of reproduced frequency modulated signals from a pair of rotary heads which simultaneously scan over a magnetic tape, where the rotary heads have gaps of mutually different azimuth angles, a head selecting circuit responsive to an output signal of the comparing circuit, for selectively producing the reproduced signal from the rotary head having the greater level, a signal processing circuit for obtaining a reproduced video signal from the reproduced signal which is selectively produced from the head selecting circuit, a variable delay circuit for delaying the reproduced video signal from the signal processing circuit by a delay time, and a delay control signal generating circuit for variably controlling the delay time of the variable delay circuit so that the variable delay circuit produces a reproduced video signal in which reproduced horizontal synchronizing signals have a constant period.

摘要翻译： 延迟时间调整系统包括比较电路，用于比较同时在磁带上扫描的一对旋转磁头的再现频率调制信号的电平，其中旋转磁头具有相互不同的方位角的间隙;磁头选择电路， 所述比较电路的输出信号用于从具有较大电平的旋转磁头选择性地产生再现信号;信号处理电路，用于根据从磁头选择电路有选择地产生的再现信号获得再现的视频信号;可变延迟电路 用于将来自信号处理电路的再现视频信号延迟延迟时间;以及延迟控制信号发生电路，用于可变地控制可变延迟电路的延迟时间，使得可变延迟电路产生再现的水平同步 信号具有恒定周期。

公开(公告)号：US4571643A

公开(公告)日：1986-02-18

申请号：US556780

申请日：1983-12-01

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： G11B15/087 ,  G11B5/024 ,  G11B5/03 ,  G11B27/28 ,  G11B27/30 ,  H04N5/782

CPC分类号： H04N5/782 ,  G11B27/28 ,  G11B27/3018 ,  G11B5/024 ,  G11B5/03 ,  G11B2220/90

摘要： In a video tape recorder of a helical scan type, a low frequency index signal and a high frequency signal are simultaneously applied to a full erase head (FE) with the high frequency signal acting as a bias prior to the recording of a video program. After the index signal has been recorded, the application of the high frequency signal is continued to erase a prerecorded material. The high frequency biasing prevents the index signal from interfering with the video signal during playback.

摘要翻译： 在螺旋扫描类型的录像机中，低频信号和高频信号同时被施加到全擦除头（FE），高频信号在记录视频节目之前起到偏置作用。 在记录了索引信号之后，继续施加高频信号以擦除预先记录的材料。 高频偏置防止索引信号在播放期间干扰视频信号。

公开(公告)号：US4542422A

公开(公告)日：1985-09-17

申请号：US440406

申请日：1982-11-09

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： G11B5/127 ,  G11B5/02 ,  G11B5/10 ,  G11B5/17

CPC分类号： G11B5/17 ,  G11B5/02 ,  G11B5/10

摘要： An electromagnetic transducer head assembly for use in magnetic recording comprises a ferromagnetic core structure (1'; 30) having a magnetic gap and a winding (1"; 31) mounted on the core structure. A capacitor (3; 34) is mounted in proximity to and connected to the winding to form a resonance circuit. An amplifier circuit (4; 38) is also mounted in proximity to and connected to the resonant circuit for generating an alternating current in the winding.

摘要翻译： 用于磁记录的电磁换能器头组件包括具有磁隙的铁磁芯结构（1'; 30）和安装在芯结构上的绕组（1“; 31）。 电容器（3; 34）安装在绕组附近并连接到绕组上以形成谐振电路。 放大器电路（4; 38）也安装在谐振电路附近并连接到谐振电路，用于在绕组中产生交流电。

公开(公告)号：US4827360A

公开(公告)日：1989-05-02

申请号：US216480

申请日：1988-07-08

申请人： Satoshi Kawasaki ,  Mitsuhiro Arai ,  Yasuomi Namiki

发明人： Satoshi Kawasaki ,  Mitsuhiro Arai ,  Yasuomi Namiki

IPC分类号： G11B5/02 ,  G11B5/53 ,  G11B15/12 ,  H01F38/14 ,  G11B5/17 ,  G11B15/14

CPC分类号： G11B5/02 ,  G11B15/125 ,  G11B5/531

摘要： A magnetic recording/reproducing apparatus for magnetically recording and reproducing information on and from a magnetic tape. The apparatus includes a rotary drum adapted to be rotatable about its own axis and having at its circumferential portions a plurality of magnetic heads including at least first and second signal recording/recproducing magnetic heads and one signal erasing magnetic head. In order for coupling between the plurality of magnetic heads and a recording/reproducing circuit of this apparatus, further included is a rotary transformer which is provided between the rotary drum and a stationary portion of this apparatus and which includes first and second transformer coil assemblies coupled to the first and second magnetic heads, respectively, and one erasing coil assembly coupled to the erasing magnetic head. The erasing coil assembly is disposed between the first and second transformer coil assemblies to assume a magnetically neutral position with respect thereto. The recording/reproducing circuit is arranged so that the directions of recording currents through the first and second transformer coil assemblies are in reverse relation to each other, whereby induction currents due to magnetic fluxes produced by the recording currents therethrough are cancelled each other in the erasing coil assembly.

摘要翻译： 一种用于在磁带上磁记录和再现信息的磁记录/重放装置。 所述设备包括旋转滚筒，所述旋转滚筒适于围绕其自身的轴线旋转并且在其周向部分处具有包括至少第一和第二信号记录/再生磁头和一个信号擦除磁头的多个磁头。 为了使多个磁头和该装置的记录/再现电路之间的耦合，还包括旋转变压器，其设置在旋转磁鼓和该装置的固定部分之间，并且包括第一和第二变压器线圈组件 分别连接到第一和第二磁头以及耦合到擦除磁头的一个擦除线圈组件。 擦除线圈组件设置在第一和第二变压器线圈组件之间以相对于其呈现磁中性位置。 记录/再现电路被布置成使得通过第一和第二变压器线圈组件的记录电流的方向彼此相反，由此由通过其的记录电流产生的磁通的感应电流在擦除中被抵消 线圈组件

公开(公告)号：US4555669A

公开(公告)日：1985-11-26

申请号：US632875

申请日：1984-07-20

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： H03K17/00 ,  H03G3/34 ,  H03F1/26

CPC分类号： H03G3/345

摘要： In a noise reduction circuit, a sample-and-hold circuit operating on a tracking mode is sampled in response to the occurrence of a noise impulse. The voltage sampled is stored in the capacitor of the sample-and-hold. A slope detector is responsive to the capacitor voltage for generating an output representative of the rate of variation of the capacitor voltage. A voltage-to-current converter is connected between the output of the slope detector and the capacitor for converting the voltage to a corresponding current and injecting the current to the capacitor when the rate of variation is positive and draining the current from the capacitor when the rate is negative.

摘要翻译： 在噪声降低电路中，响应于噪声冲击的发生而对在跟踪模式下工作的采样和保持电路进行采样。 采样电压存储在采样保持电容中。 斜率检测器响应于电容器电压以产生代表电容器电压的变化率的输出。 电压 - 电流转换器连接在斜率检测器的输出端和电容器之间，用于将电压转换成相应的电流，并且当变化率为正值并将电流从电容器排出时，将电流注入电容器 利率为负。

公开(公告)号：US4365277A

公开(公告)日：1982-12-21

申请号：US106883

申请日：1979-12-27

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： G11B5/455 ,  G11B15/06 ,  G11B15/60 ,  G11B15/665 ,  G11B27/10 ,  G11B27/28 ,  G11B27/34 ,  G11B15/43 ,  G11B15/44 ,  G11B15/52

CPC分类号： G11B27/107 ,  G11B15/06 ,  G11B15/6656 ,  G11B27/28 ,  G11B2220/90 ,  G11B27/34

摘要： A device for detecting the position of a tape in a magnetic tape recording and/or reproducing apparatus comprises a tape guide making contact with a magnetic tape traveling along a specific tape travel path at the side thereof opposite to the side having a magnetic layer surface thereon, a detection head provided in the tape guide at the front side thereof for producing a tape position designation signal on the magnetic tape from the side opposite to the side having the magnetic layer, and a circuit for detecting a desired position of the magnetic tape responsive to detection of the designation signal by the detection head.

摘要翻译： 用于检测磁带记录和/或再现装置中的磁带位置的装置包括磁带引导件，其与沿着特定磁带行进路径在与其上具有磁性层表面的一侧相对的侧面上行进的磁带接触 设置在磁带引导件的前侧的检测头，用于从与具有磁性层的一侧相反的一侧在磁带上产生磁带位置指定信号，以及用于检测磁带的期望位置的电路 以检测由检测头指定的信号。

公开(公告)号：US5223941A

公开(公告)日：1993-06-29

申请号：US515395

申请日：1990-04-27

申请人： Yasuomi Namiki ,  Masaru Tanaka ,  Yoshio Tokuyama

发明人： Yasuomi Namiki ,  Masaru Tanaka ,  Yoshio Tokuyama

IPC分类号： G11B15/14 ,  H04N5/782 ,  H04N9/84

CPC分类号： H04N5/782 ,  G11B15/14 ,  H04N9/84

摘要： A helical scan type playback apparatus comprising a plurality of magnetic heads, a position signal generation element for generating a signal indicative of each position of these magnetic heads, and a switching element for video signals played back by the plurality of magnetic heads in response to the position signal from the generation element, particularly a playback apparatus for information recorded on a video tape in which the phase of a low frequency band color signal is altered every track of a video tape on the basis of a predetermined rule, thereby allowing spectra of color signals not to overlap with each other between adjacent tracks. This playback apparatus comprises an element for storing the position signal after a first predetermined time has passed from the time when a vertical synchronizing signal of the video signal is received, and a readout element for reading out the position signal stored in the storage element after a second predetermined time has passed from the time when the vertical synchronizing signal is received, and outputting it.

公开(公告)号：US4539604A

公开(公告)日：1985-09-03

申请号：US516186

申请日：1983-07-21

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： H04N5/783 ,  G11B5/588 ,  G11B15/18 ,  G11B21/10

CPC分类号： G11B5/588 ,  G11B15/1808

摘要： A rotary magnetic head type recording and/or reproducing apparatus to which a tracking system can be applied, comprises two rotary heads provided opposing a rotary body for alternately and successively recording signals on oblique tracks in a recording medium with respect to the longitudinal direction of the recording medium or for alternately scanning over tracks in the recording medium to reproduce recorded signals, moving mechanism for continuously moving the recording medium, a head moving mechanism for displacing the two rotary heads substantially at the same time in mutually opposite directions by the same amount in a plane which is perpendicular to the rotating plane of the rotary heads, in response to a driving signal supplied from the exterior, and a control head for recording a control pulse having a predetermined period onto the recording medium. The tracking system comprises a driving signal producing circuit for producing a driving signal from a pulse obtained by detecting the rotation of the rotary body and a control pulse reproduced from the control head, upon reproduction in which the recording medium is continuously moved at a speed different from that upon recording by the moving means and supplying means for supplying the driving signal from the driving signal producing circuit to the head moving mechanism.

摘要翻译： 可以应用跟踪系统的旋转磁头型记录和/或再现装置包括两个相对于旋转体设置的旋转头，用于相对于记录介质的纵向方向在记录介质中的倾斜轨道上交替地和连续地记录信号 或者用于交替地扫描记录介质中的轨道以再现记录信号，用于连续移动记录介质的移动机构，用于将两个旋转磁头基本同时相互相反地移位相同方向的头移动机构 响应于从外部提供的驱动信号而垂直于旋转磁头的旋转平面的平面以及用于将具有预定周期的控制脉冲记录到记录介质上的控制头。 跟踪系统包括驱动信号产生电路，用于通过检测旋转体的旋转获得的脉冲和从控制头再现的控制脉冲产生驱动信号，其中记录介质以不同的速度连续移动 从通过移动装置记录的信号和从驱动信号产生电路向头移动机构提供驱动信号的提供装置。

公开(公告)号：US5050012A

公开(公告)日：1991-09-17

申请号：US340308

申请日：1989-04-19

申请人： Hiroshi Nishiumi ,  Yasuomi Namiki

发明人： Hiroshi Nishiumi ,  Yasuomi Namiki

IPC分类号： G11B5/024 ,  G11B5/48 ,  G11B15/12

CPC分类号： G11B5/024 ,  G11B15/125 ,  G11B5/4893

摘要： A high-speed erasing apparatus for use in a magnetic recording/reproducing system for erasing a recorded signal on a magnetic tape traveling along a predetermined path. The erasing apparatus comprises a flying-erasing head mounted on a rotary cylinder of the system, a full-erasing head disposed at a preceding position of the flying-erasing head in a traveling direction of the tape, and an audio-erasing head provided at a succeeding position thereof in the traveling direction. Also included in the apparatus are a high-speed erase oscillating circuit for supplying the full-erasing head with an output having a frequency higher than N times of the upper limit of the audible range, a video-erase oscillating circuit for supplying the flying-erasing head with an output having a frequency higher than the upper limit of a video signal range, and an audio-erase oscillating circuit for supplying the audio-erasing head with an output having a frequency higher than the upper limit of the audible range. The oscillating circuits are driven so that, at the initial time, the recorded signal is erased by all of the erasing heads with the tape being transported at the industry standard traveling speed and the high-speed erase oscillating circuit is operated so as to, after elapse of a predetermined time, erase the recorded signal by only the full-erasing head with the tape being transported at N times of the industry standard traveling speed.

摘要翻译： 一种用于磁记录/再现系统的高速擦除装置，用于擦除沿预定路径行进的磁带上的记录信号。 擦除装置包括：安装在该系统的旋转圆筒上的飞行擦除头，设置在该飞行消除头的行进方向的前一位置处的全擦除头，以及一个音频擦除头， 其行进方向的后续位置。 该装置还包括高速擦除振荡电路，用于向全擦除头供给具有高于可听范围上限的N倍的频率的输出;视频擦除振荡电路， 具有高于视频信号范围的上限的频率的输出的擦除头;以及音频擦除振荡电路，用于向音频擦除头提供具有高于可听范围的上限的频率的输出。 振荡电路被驱动，使得在初始时刻，记录信号被所有的擦除头擦除，带被传送的行业标准行进速度和高速擦除振荡电路被运行，以便在 经过预定的时间，只有全擦除磁头才能擦除记录的信号，磁带以行业标准行驶速度的N倍进行传输。

公开(公告)号：US4549231A

公开(公告)日：1985-10-22

申请号：US374772

申请日：1982-05-04

申请人： Yasuomi Namiki

发明人： Yasuomi Namiki

IPC分类号： G11B15/087 ,  G11B27/024 ,  G11B27/10 ,  G11B27/32 ,  G11B27/02 ,  H04N5/78

CPC分类号： G11B27/024 ,  G11B15/087 ,  G11B27/107 ,  G11B27/324 ,  G11B2220/90

摘要： A signal recording and/or reproducing system is provided in a recording and/or reproducing apparatus having a control head for performing recording and/or reproduction of a control signal with respect to a control track on a tape, and a control circuit supplied and controlled by a reproduced control signal. The signal recording and/or reproducing system comprises a switching circuit for only passing signal parts in a signal reproduced by the control head which are required in the control circuit for control, a circuit for obtaining a signal which has passed through the switching circuit as a reproduced control signal and supplying this reproduced control signal to the control head, a modifying circuit for modifying signal parts recorded on the control track other than the signal parts required in the control circuit for control, and a discriminating circuit for discriminating signal parts within a reproduced signal obtained by reproducing the control track by the control head which are modified by the modifying circuit, to produce a discrimination signal.

摘要翻译： 在具有控制头的记录和/或再现装置中提供信号记录和/或再现系统，用于执行关于磁带上的控制轨迹的控制信号的记录和/或再现以及提供和控制的控制电路 通过再现的控制信号。 信号记录和/或再现系统包括一个切换电路，用于仅通过在控制电路中所需的控制头再现的信号中的信号部分进行控制，用于获得已经通过开关电路的信号作为 再现控制信号并将该再现的控制信号提供给控制头，修改电路，用于修改记录在控制轨道上的信号部分，而不是用于控制的控制电路中所需的信号部分，以及鉴别电路，用于鉴别再现的控制信号中的信号部分 通过由控制头再现由修改电路修改的控制轨迹获得的信号，以产生鉴别信号。