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1. 发明授权

US6115204A Rotary head type magnetic recording/reproducing apparatus employing dynamic closed loop and semi-closed loop or open loop tracking systems 失效
标题翻译：采用动态闭环和半闭环或开环跟踪系统的旋转头型磁记录/再现装置
公开(公告)号：US6115204A
公开(公告)日：2000-09-05
申请号：US278151
申请日：1994-07-21
申请人： Yoshiyuki Yokomachi , Kazuki Murata
发明人： Yoshiyuki Yokomachi , Kazuki Murata
IPC分类号： G11B5/53 , G11B5/588 , G11B5/592 , G11B21/10 , H04N5/7826
CPC分类号： G11B5/588 , G11B21/103 , G11B5/531 , G11B5/5922
摘要： A rotary head type magnetic recording/reproduction apparatus according to the present invention includes a recording format in which a plurality of pilot signals of different frequencies are recorded to be superimposed sequentially on a main signal for every other track. The magnetic recording/reproduction apparatus includes a single head structure where a plurality of magnetic heads are attached to a plurality of actuators in a one-to-one correspondence. For one magnetic head detecting a relative position error signal out of the plurality of magnetic heads, dynamic tracking under closed loop control is carried out. For another magnetic head that does not detect a relative position error signal, open loop control or semi-closed loop control is carried out according to information concerning the amount of displacement of the one magnetic head. Thus, a magnetic recording/reproduction apparatus is provided that allows highly accurate dynamic tracking without providing many pilot signal generation means and without reducing the manufacturing yield of a head drum.
摘要翻译：根据本发明的旋转磁头式磁记录/再现装置包括其中记录不同频率的多个导频信号被顺序叠加在每个其它磁道的主信号上的记录格式。磁记录/再现装置包括单头磁头结构，其中多个磁头以一一对应的方式附接到多个致动器。对于检测多个磁头中的相对位置误差信号的一个磁头，执行闭环控制下的动态跟踪。对于不检测相对位置误差信号的另一个磁头，根据与一个磁头的位移量有关的信息进行开环控制或半闭环控制。因此，提供了一种磁记录/再现装置，其允许高度精确的动态跟踪，而不需要提供许多导频信号产生装置，而不降低磁头鼓的制造产量。

2. 发明授权

US5870244A Magnetic recording/reproduction apparatus and method for adjusting head height therein 失效
标题翻译：用于调节其头部高度的磁记录/再现装置和方法
公开(公告)号：US5870244A
公开(公告)日：1999-02-09
申请号：US790894
申请日：1997-01-29
申请人： Yoshiyuki Yokomachi , Hiroaki Takeuchi , Kazuki Murata , Tohru Okuda
发明人： Yoshiyuki Yokomachi , Hiroaki Takeuchi , Kazuki Murata , Tohru Okuda
IPC分类号： G11B5/48 , G11B5/53 , G11B5/56 , G11B5/588 , G11B5/592 , G11B15/18 , G11B21/02 , G11B5/584
CPC分类号： G11B5/56 , G11B5/4893 , G11B5/531 , G11B5/534 , G11B5/588 , G11B15/1875 , G11B5/592
摘要： The relative height between two sets of magnetic head groups shared for recording and reproduction and mounted on actuators is adjusted at high accuracy, so that a track of a predetermined track width and track pitch can be formed. In a rotary head type magnetic recording/reproduction apparatus including two sets of magnetic head groups AT and BT of one or a plurality of magnetic heads displaceable in the track width direction by actuators 100A and 100B, a signal which becomes the reference for relative height adjustment of the heads is recorded by one of the magnetic head groups. Then, the magnetic tape is rewound, and the run of the magnetic tape is controlled by one of the magnetic head groups. Under this state, the relative height between the two sets of magnetic head groups is detected by the other magnetic head group, whereby the relative height of the two sets of magnetic head groups is adjusted according to that information.
摘要翻译：在记录和再现共享并安装在致动器上的两组磁头组之间的相对高度以高精度被调节，使得可以形成预定轨道宽度和轨道间距的轨迹。在包括通过致动器100A和100B在轨道宽度方向上可移位的一个或多个磁头的两组磁头组AT和BT的旋转磁头型磁记录/再现装置中，作为相对高度调节的基准的信号的头部由磁头组中的一个记录。然后，磁带被倒带，并且磁带的运行由一个磁头组控制。在这种状态下，由另一磁头组检测两组磁头组之间的相对高度，由此根据该信息调整两组磁头组的相对高度。

3. 发明授权

US5361180A Simplified cassette loading mechanism for a magnetic recording and reproducing apparatus 失效
标题翻译：用于磁记录和再现装置的简化盒装载机构
公开(公告)号：US5361180A
公开(公告)日：1994-11-01
申请号：US846197
申请日：1992-03-05
申请人： Koji Yamabuchi , Hideshi Ohtsuka , Takashi Koyama , Yoshiyuki Yokomachi , Kazutaka Abe , Akio Tanaka
发明人： Koji Yamabuchi , Hideshi Ohtsuka , Takashi Koyama , Yoshiyuki Yokomachi , Kazutaka Abe , Akio Tanaka
IPC分类号： G11B15/665 , G11B15/61
CPC分类号： G11B15/6653
摘要： A loading lever having loading lever pins is fixed on a main chassis. Loading arms having loading arm depressed portions are rotatably attached to a slide chassis. The loading arm depressed portion engages with the loading lever pin, and the loading arm depressed portion is engaged with the loading lever pin, and in this state, the slide chassis moves in the direction of the arrow B. Therefore, loading arms move in the direction of the arrows J and K. Since the loading arms are rotated, it becomes unnecessary to slide the loading lever, and therefore, the structure of the magnetic recording reproducing apparatus can be made simple.
摘要翻译：具有加载杆销的装载杆固定在主机架上。具有装载臂凹部的装载臂可旋转地安装在滑动底盘上。装载臂凹陷部分与装载杆销接合，并且装载臂的凹陷部分与装载杆销接合，并且在该状态下，滑动底盘沿箭头B的方向移动。因此，装载臂在箭头J和K的方向。由于装载臂旋转，所以不需要滑动装载杆，因此可以使磁记录再现装置的结构简单。

4. 发明授权

US5323279A Magnetic tape driving apparatus with capstan rotating at different speeds 失效
标题翻译：磁带驱动装置，主轴以不同速度旋转
公开(公告)号：US5323279A
公开(公告)日：1994-06-21
申请号：US588138
申请日：1990-09-26
申请人： Yoshiyuki Yokomachi , Tohru Okuda , Shigeaki Kakiwaki , Akinori Aratani , Masaji Tsuji
发明人： Yoshiyuki Yokomachi , Tohru Okuda , Shigeaki Kakiwaki , Akinori Aratani , Masaji Tsuji
IPC分类号： G11B15/43 , G11B15/60 , G11B15/665 , G11B5/008
CPC分类号： G11B15/6651 , G11B15/43 , G11B15/602
摘要： A magnetic tape driving apparatus includes: a stationary magnetic head capable of recording and reproducing digital signals simultanouesly on multichannel tracks; tape guide members for drawing out a magnetic tape wound on a pair of tape supply/take-up reels contained in a cassette, contacting the magnetic tape with the stationary magnetic head, and guiding running of the magnetic tape; and a constant speed driving mechanism for holding the magnetic tape and making it run at a constant speed by capstans and pinch rollers provided on both of tape feed/take-up sides of the stationary magnetic head. The stationary magnetic head and the tape guide members having level regulators for regulating running positions of upper and lower edges of the magnetic tape, to regulate the level of running of the tape with high precision. The rotating speeds of the capstans on both of the tape feed/take-up sides are regulated, whereby the tension of the tape is maintained at a desired prescribed value, to ensure a stable running of the tape.
摘要翻译：磁带驱动装置包括：能够同时在多声道轨道上记录和再现数字信号的固定磁头; 磁带引导构件，用于拉出缠绕在盒中包含的一对磁带供应/卷取卷轴上的磁带，使磁带与固定磁头接触，并引导磁带的运行; 以及恒定速度驱动机构，用于通过设置在固定磁头的带进给/卷绕侧的绞盘和夹送辊来保持磁带并以恒定的速度运行。固定磁头和带引导件具有用于调节磁带的上边缘和下边缘的运行位置的液位调节器，以高精度调节磁带的运行水平。在两个带进给/卷取侧的绞盘的旋转速度被调节，由此将带的张力保持在期望的规定值，以确保带的稳定运行。

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