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1.发明授权Resolution enhancement of absolute track position using iterative process and position bursts 失效使用迭代过程和位置突发分辨率提高绝对轨迹位置
公开(公告)号：US5402287A
公开(公告)日：1995-03-28
申请号：US732207
申请日：1991-07-18
IPC分类号： G11B5/596
CPC分类号： G11B5/596
摘要： In the head positioning apparatus of a disk-shaped information recording medium using the sector-servo-method, track codes are recorded in advance so as to be repeated every 12 tracks in the servo sectors of the disk-shaped information recording medium, the track are reproduced with a head, and a distance between the current position of the head and a target track is detected from the reproduced signal of the track codes with a resolution of 1/2.sup.7 of track width, then the head is moved to the target track so as to decrease the distance, when the head reaches the range of the width of .+-.6 tracks of the target track, an expanded head position signal having the resolution of 1/2.sup.7 is generated, and the head is controlled on the basis of the expanded head position signal and is finally settled to the target track.
摘要翻译： 在使用扇区伺服方式的盘形信息记录介质的头定位装置中，预先记录轨道码，以便在盘状信息记录介质的伺服扇区中每12个轨道重复，轨道 用头部再现，并且以轨道宽度的1/27的分辨率从轨道码的再现信号中检测头部和目标轨道的当前位置之间的距离，然后将头移动到目标轨道 为了减小距离，当头部到达目标轨道的+/- 6个轨道的宽度的范围时，产生具有1/27分辨率的扩展的头位置信号，并且基于 的扩展头位置信号，并最终确定到目标轨道。
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2.发明授权Resolution enhancement of absolute track position using iterative process and position bursts with track following capability 失效使用具有跟踪能力的迭代过程和位置脉冲串分辨率增强绝对轨迹位置
公开(公告)号：US5396380A
公开(公告)日：1995-03-07
申请号：US730237
申请日：1991-07-15
CPC分类号： G11B5/5547
摘要： Track codes are recorded in advance so as to be repeated every 12 tracks, and burst signals .alpha. and .beta. are also recorded in advance so as to be repeated every 2 tracks, in the servo sectors of the disk-shaped information recording medium; the track codes and the burst signals .alpha. and .beta. are reproduced with a data head, and a distance between the current position of the data head and a target track is detected from the reproduced signal of the track codes with a resolution of 1/2.sup.2 of track width, then the data head is moved to the target track so as to decrease the distance; when the data head reaches the range of the width of .+-.6 tracks of the target track, an expanded data head position signal having the resolution of 1/2.sup.2 is generated; and thereby the data head is controlled.
摘要翻译： 提前记录轨道码，以便每12个轨道重复，并且在盘状信息记录介质的伺服扇区中，还预先记录突发信号α和β以便每2个磁道重复; 利用数据头再现轨道码和突发信号α和β，并根据轨道码的再现信号，以1/22的分辨率检测数据头的当前位置与目标轨道之间的距离 轨道宽度，然后将数据头移动到目标轨道，以减小距离; 当数据磁头达到目标磁道的+/- 6磁道的宽度范围时，生成分辨率为1/22的扩展数据磁头位置信号; 从而数据头被控制。
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3.发明授权Head position recognition method, a speed calculation method, and a head movement speed control device 失效头部位置识别方法，速度计算方法和头部移动速度控制装置
公开(公告)号：US5383068A
公开(公告)日：1995-01-17
申请号：US883209
申请日：1992-05-14
申请人： Ryosuke Shimizu , Tetsurou Takaoka
发明人： Ryosuke Shimizu , Tetsurou Takaoka
CPC分类号： G11B5/5547 , G11B21/083
摘要： A head position recognition method, a speed calculation method, and a head movement speed control device which provide for an overall improvement in storage device performance without increasing the seek time of the data head. Discrete servo sectors are provided circumferentially to the recording medium, four servo patterns with a minimum repeat cycle of 24 tracks are written into each servo sector. The range of the head seek distance that should be obtained at the current servo sector is estimated based on the previously calculated head seek distance, and the calculated head seek speed is corrected to the true head seek distance.
摘要翻译： 一种头位置识别方法，速度计算方法以及头部移动速度控制装置，其在不增加数据头的寻道时间的情况下提供存储装置性能的总体改进。 离散伺服扇区周向地设置在记录介质上，具有24个轨迹的最小重复周期的四个伺服模式被写入每个伺服扇区。 基于先前计算的头部搜索距离来估计在当前伺服扇区处应该获得的头部搜索距离的范围，并将所计算的头部寻道速度校正为真正的头部搜索距离。
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