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1. 发明授权

US5311376A Information detecting system 失效
标题翻译：信息检测系统
公开(公告)号：US5311376A
公开(公告)日：1994-05-10
申请号：US714102
申请日：1991-06-11
申请人： David B. Joan , Michael R. Spaur , Richard W. Hull , Takashi Asami , Marshall D. Lee , Robert P. Mento , Min-Hui Wang
发明人： David B. Joan , Michael R. Spaur , Richard W. Hull , Takashi Asami , Marshall D. Lee , Robert P. Mento , Min-Hui Wang
IPC分类号： G11B20/12 , G11B20/14 , G11B27/30 , H04L7/027 , H04L7/033 , H04L7/04 , H04L7/08 , H04L25/06 , H03K17/00 , G11B5/09
CPC分类号： G11B20/1403 , G11B27/3027 , H04L25/068 , H04L7/0337 , H04L7/041 , G11B20/1252 , G11B2020/1282 , H04L7/027 , H04L7/08
摘要： An integrated servo system for a disk drive employing sector servo positioning information on concentric tracks of a recording medium utilizes a servo burst pattern with three sequentially occurring servo bursts. One burst is positioned to have a maximum amplitude plateau on a track centerline of alternate tracks, and the other two bursts have maximum plateau values at locations between the centerlines of adjacent tracks. The amplitudes of the bursts are sequentially detected by a peak detector and supplied to sample and hold circuitry for measuring their relative amplitudes. Discriminator circuitry utilizes a window to provide two samples of each transition in the servo pattern and compares the samples to detect different fields and events in the pattern.
摘要翻译：在采用记录介质的同心磁道上的扇区伺服定位信息的磁盘驱动器的集成伺服系统利用具有三个顺序发生的伺服脉冲串的伺服脉冲串模式。一个突发被定位为在交替轨道的轨道中心线上具有最大幅度平台，而另外两个脉冲串在相邻轨道的中心线之间的位置处具有最大平稳值。脉冲串的幅度由峰值检测器顺序地检测，并提供给采样和保持电路以测量它们的相对幅度。鉴别器电路利用窗口提供伺服模式中每个转换的两个样本，并比较样本以检测模式中的不同场和事件。

2. 发明授权

US5483393A Disk drive having head positioning servo with improved servo read signal processing using median servo burst peak magnitudes 失效
标题翻译：具有磁头定位伺服的磁盘驱动器，使用中值伺服突发峰值幅度改进的伺服读取信号处理
公开(公告)号：US5483393A
公开(公告)日：1996-01-09
申请号：US229210
申请日：1994-04-18
申请人： Robert P. Mento , Jeffrey G. Reh
发明人： Robert P. Mento , Jeffrey G. Reh
IPC分类号： G11B5/596
CPC分类号： G11B5/59655
摘要： A disk drive for use with an embedded head positioning servo system is disclosed. The disk drive includes a disk on the surface of which spaced-apart servo bursts are prerecorded in servo sectors. Successive servo bursts are read by a read/write head which produces oscillating signals having variable magnitude peaks. A timing circuit provides a timing signal, synchronized with the occurrence of the servo sectors, which defines, in time, a servo signal window, during which time a servo burst is being read by the read/write head. A detector circuit measures the magnitudes of each of the peak signals of a servo burst occurring in the servo timing window. The median peak value for a burst is stored, a next burst is detected and measured and the median peak value for that burst is stored. By comparing the median peak magnitudes of successive servo bursts, a servo error signal for use in correcting any error in head position relative to a desired track centerline is produced. The servo error signal is applied to an electrically controlled actuator which moves the read/write head.
摘要翻译：公开了一种用于嵌入式头定位伺服系统的磁盘驱动器。磁盘驱动器包括其表面上的盘，其间隔开的伺服脉冲串被预先记录在伺服扇区中。连续的伺服脉冲串由读/写头读出，其产生具有可变幅度峰值的振荡信号。定时电路提供与伺服扇区的发生同步的定时信号，伺服扇区在时间上定义了伺服信号窗口，在此期间读/写头读取伺服脉冲串。检测器电路测量在伺服定时窗口中发生的伺服脉冲串的每个峰值信号的幅度。存储突发的中值峰值，检测并测量下一个脉冲串，并存储该脉冲串的中值峰值。通过比较连续伺服脉冲串的中值峰值幅度，产生用于校正相对于期望轨道中心线的头部位置中的任何误差的伺服误差信号。伺服误差信号被施加到移动读/写头的电控致动器。

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