公开(公告)号：US4876618A

公开(公告)日：1989-10-24

申请号：US94295

申请日：1987-09-08

申请人： Jun Ide ,  Tomoo Iizumi

发明人： Jun Ide ,  Tomoo Iizumi

IPC分类号： G11B5/55 ,  G11B21/08

CPC分类号： G11B21/083 ,  G11B5/5534

摘要： A magnetic disk drive device includes a rotatable disk. The disk has at least data tracks and guard band tracks. The data is previously recorded on the data tracks in the reversed magnetization form, whereas no data is recorded on the guard band track. While the magnetic head seeks the data from the tracks, the data is detected at first from the data track. This position where the first data is detected is recognized as a zero track. The magnetic head data seeking is performed based upon this zero track which is electronically detectable.

摘要翻译： 磁盘驱动装置包括可旋转盘。 磁盘至少具有数据轨道和保护带轨道。 数据先前以反向磁化形式记录在数据磁道上，而在保护带轨道上没有记录数据。 当磁头寻找来自轨道的数据时，首先从数据轨道检测数据。 检测到第一数据的位置被识别为零轨迹。 基于可以电子检测的该零轨迹执行磁头数据寻找。

公开(公告)号：US4884152A

公开(公告)日：1989-11-28

申请号：US290836

申请日：1988-12-28

申请人： Jun Ide

发明人： Jun Ide

IPC分类号： G11B21/08 ,  G11B5/55

CPC分类号： G11B5/5534

摘要： A method for restoring the head to the track 0 in a disk drive unit which utilizes a stepping motor to position the head, the method comprising positioning the head to a position outside track 0 by exciting the stepping motor; returning the head thereafter toward an inner side to detect a position where the track 0 is found wihin a cycle of an excitation phase of the stepping motor; positioning the head at a position separated from the outer-most track 0 by a preset number of steps; and then controlling a current ratio to effect an excitation on a preset excitation phase, thereby positioning the head to the position over the track 0.

摘要翻译： 一种利用步进电机来定位磁头的磁盘驱动单元将磁头恢复到轨道0的方法，该方法包括：通过激励步进电机将磁头定位在磁道0外的位置; 然后将头部向内侧返回，以检测步进电动机的励磁相位的周期中的轨迹0的位置; 将头部定位在与最外面的轨道0分开预定数量的步骤的位置处; 然后控制电流比以在预设的激励相位上实现激励，从而将磁头定位在磁道0上方的位置。

公开(公告)号：US4860131A

公开(公告)日：1989-08-22

申请号：US81310

申请日：1987-08-03

申请人： Toru Kowaguchi ,  Tooru Kaneko ,  Jun Ide ,  Tomoo Iizumi

发明人： Toru Kowaguchi ,  Tooru Kaneko ,  Jun Ide ,  Tomoo Iizumi

IPC分类号： G11B5/55 ,  G11B21/08 ,  G11B21/10

CPC分类号： G11B5/5534 ,  G11B21/083

摘要： A method of re-correcting the position of a head is used in a disk driving device including a zero track restoring arrangement for electrically detecting the zero track position on a magnetic disk, and including a track counter indicating the track position of the magnetic head. The method is configured to monitor the track number of the track counter and never fails to effect re-correction of the position of the head when the track number is "0" or "1".

摘要翻译： 一种重新校正头部位置的方法被用于包括用于电磁检测磁盘上的零轨迹位置的零轨迹恢复装置的磁盘驱动装置，并且包括指示磁头的磁道位置的磁道计数器。 该方法被配置为监视轨道计数器的轨道号，并且当轨道号为“0”或“1”时，永远不会对头部的位置进行重新校正。

公开(公告)号：US4839753A

公开(公告)日：1989-06-13

申请号：US108773

申请日：1987-10-15

申请人： Jun Ide ,  Tomoo Iizumi ,  Yoshitaka Takahashi ,  Hiroshi Yoshida ,  Tooru Kaneko ,  Yuichi Hishi

发明人： Jun Ide ,  Tomoo Iizumi ,  Yoshitaka Takahashi ,  Hiroshi Yoshida ,  Tooru Kaneko ,  Yuichi Hishi

IPC分类号： G11B21/08 ,  G11B5/596 ,  G11B19/04 ,  G11B20/12

CPC分类号： G11B5/59633 ,  G11B20/1252 ,  G11B2220/2508

摘要： An information recording disk includes detection regions used to confirm presence or absence of written signals, read/write regions available for signal writing and write-project regions which reject signal writing. Regions where the detection regions and read/write regions overlap each other are originally provided with discriminating signals to distinguish these regions from at least the other regions. The write protect regions are distinguished from the read/write regions, referring to information detected by a head assembly.

摘要翻译： 信息记录盘包括用于确认写入信号的存在或不存在的检测区域，可用于信号写入的读/写区域和拒绝信号写入的写入项目区域。 检测区域和读/写区域彼此重叠的区域最初设置有鉴别信号，以区分这些区域与至少其他区域。 写保护区域与读/写区域不同，参考由头组件检测的信息。