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公开(公告)号：US6124996A
公开(公告)日：2000-09-26
申请号：US175908
申请日：1998-10-20
摘要： A timing-based servo system for positioning a magnetic head relative to a magnetic storage medium, the magnetic storage medium having a servo pattern written thereon, the system comprising a head including a servo read element configured to read the servo pattern and produce a signal, the signal including recognizable signal events corresponding to the servo read element reading servo transitions; a servo decoder configured to receive the servo signal, determine the position of the head, with respect to the servo band, in response to the amount of time between the signal events, and generate an error signal indicative of actual head position relative to desired head position with respect to the servo band, the servo decoder including time capture logic configured to determine the amount of time between the signal events, the time capture logic including a multiple phase clock generator. A servo method for positioning a magnetic head relative to a magnetic storage medium, the magnetic storage medium having a servo pattern written thereon, the head including a servo read element configured to read the servo pattern and produce a signal, the signal including recognizable signal events corresponding to the servo read element reading servo transitions, the method comprising receiving the servo signal, and determining the position of the head, with respect to the servo band, by determining the amount of time between the signal events.
摘要翻译： 一种基于定时的伺服系统，用于相对于磁存储介质定位磁头，所述磁存储介质具有写在其上的伺服模式，所述系统包括头部，所述磁头包括被配置为读取所述伺服模式并产生信号的伺服读取元件， 所述信号包括与所述伺服读取元件读取伺服转换相对应的可识别信号事件; 配置为接收伺服信号的伺服解码器，响应于信号事件之间的时间量，相对于伺服带来确定磁头的位置，并产生指示相对于所需磁头的实际磁头位置的误差信号 所述伺服解码器包括时间捕捉逻辑，其被配置为确定所述信号事件之间的时间量，所述时间捕获逻辑包括多相时钟发生器。 一种用于相对于磁存储介质定位磁头的伺服方法，所述磁存储介质具有写在其上的伺服模式，所述磁头包括被配置为读取所述伺服模式并产生信号的伺服读取元件，所述信号包括可识别的信号事件 对应于伺服读取元件读取伺服转换，所述方法包括接收伺服信号，并通过确定信号事件之间的时间量来确定头部相对于伺服带的位置。
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公开(公告)号：US6122124A
公开(公告)日：2000-09-19
申请号：US175907
申请日：1998-10-20
CPC分类号： G11B5/5926
摘要： An adaptive media speed drive unit for use with a magnetic storage medium, the magnetic storage medium having a timing based servo pattern written thereon, the servo pattern including transitions, the drive unit including a magnetic head including a servo read element configured to read the servo pattern and produce a signal, the signal including recognizable signal events corresponding to the servo read element reading servo transitions; a servo decoder including time capture logic configured to determine the amount of time between the signal events; and a digitally controlled oscillator configured to produce a tracking clock which a write element can use to write data to the magnetic medium with a uniform spacing regardless of magnetic medium speed. A method for producing a tracking clock signal used for writing data in an equally spaced manner to a magnetic medium unit, the magnetic storage medium having a servo pattern written thereon, the servo pattern including transitions, the magnetic medium being movable relative to a magnetic head and the head including a servo read element configured to read the servo pattern and produce a signal, the signal including recognizable signal events corresponding to the servo read element reading servo transitions, the method comprising receiving the servo signal, and determining the speed of the magnetic medium, with respect to the head, by determining the amount of time between the signal events; and producing the tracking clock.
摘要翻译： 一种与磁存储介质一起使用的自适应介质速度驱动单元，所述磁存储介质具有写入其上的基于定时的伺服模式，所述伺服模式包括转换，所述驱动单元包括磁头，所述磁头包括被配置为读取伺服的伺服读取元件 该信号包括与伺服读取元件读取伺服转换相对应的可识别信号事件; 伺服解码器，包括被配置为确定信号事件之间的时间量的时间捕获逻辑; 以及数字控制振荡器，其被配置为产生跟踪时钟，所述跟踪时钟使得写入元件可以以与所述磁介质速度无关的方式以均匀的间隔将数据写入所述磁介质。 一种用于产生跟踪时钟信号的方法，用于以等间隔的方式将数据写入到磁性介质单元中，所述磁性存储介质具有写在其上的伺服模式，所述伺服模式包括过渡，所述磁性介质可相对于磁头移动 并且所述头部包括被配置为读取所述伺服模式并产生信号的伺服读取元件，所述信号包括与所述伺服读取元件读取伺服转换相对应的可识别信号事件，所述方法包括接收所述伺服信号，以及确定所述磁体的速度 媒体，通过确定信号事件之间的时间量相对于头部; 并产生跟踪时钟。
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公开(公告)号：US5315456A
公开(公告)日：1994-05-24
申请号：US869603
申请日：1992-04-16
CPC分类号： G11B20/1258 , G11B19/02 , G11B27/10 , G11B27/3027 , G11B2020/1282 , G11B2220/20
摘要： A disk drive has a disk format that includes servo fields and interspersed data fields. The disk drive includes a timing generator for generating timing signals to synchronize and control operation of read/write and servo positioning circuits. The disk drive also includes a writable program store that stores a plurality of timing signal commands for generating timing signals in conformance with the format of a disk. A processor loads the writable program store with the timing signal commands and the processor further enables readout of those commands from the writable program store. An execution register receives the timing signal commands and generates timing signals in response, the timing signals controlling synchronization and operation of the read/write circuits. As the writable program store is reprogrammable, at will, substantial flexibility is achieved in the creation of such timing signals.
摘要翻译： 磁盘驱动器具有包括伺服字段和散布数据字段的磁盘格式。 盘驱动器包括定时发生器，用于产生定时信号以同步和控制读/写和伺服定位电路的操作。 磁盘驱动器还包括可写程序存储器，其存储用于根据磁盘的格式产生定时信号的多个定时信号命令。 处理器使用定时信号命令加载可写程序存储器，并且处理器还允许从可写程序存储器读出这些命令。 执行寄存器接收定时信号命令并产生响应中的定时信号，定时信号控制读/写电路的同步和操作。 由于可写程序存储器是可重新编程的，所以在创建这样的定时信号时，可以随意地获得实质的灵活性。
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4.发明授权Programmable start-of-sector pulse generator for a disk drive using embedded servo bursts and split data fields 失效使用嵌入式伺服突发和分割数据字段的磁盘驱动器的可编程起始扇区脉冲发生器
公开(公告)号：US5276564A
公开(公告)日：1994-01-04
申请号：US869602
申请日：1992-04-16
CPC分类号： G11B20/1258 , G11B19/02 , G11B21/085 , G11B27/3027 , G11B2020/1282
摘要： A disk drive system employs uniform size data blocks, with each disk having a sectorized track format and each sector of a track including at least one servo burst. Data blocks exhibit a constant data density across a plurality of disk tracks of differing radii. The system comprises read/write apparatus for accessing both servo signals and data signals in each disk sector. A servo system is responsive to servo signals fed from the read/write apparatus to generate a synchronizing signal. A data sector pulse generation circuit is responsive to the synchronizing signal to generate and pass to the read/write apparatus, a data sector pulse for each block of data commencing in a sector. That data sector pulse enables operation of the read/write apparatus upon the data block. A control circuit enables the delay of generation of a next data sector pulse when any block of data is split by a servo burst. The delay period is the duration of the servo burst and the portion of the data block that follows the servo burst.
摘要翻译： 磁盘驱动器系统采用均匀尺寸的数据块，每个磁盘具有扇区化的磁道格式，并且磁道的每个扇区包括至少一个伺服脉冲串。 数据块在不同半径的多个磁盘轨道上呈现恒定的数据密度。 该系统包括用于访问每个磁盘扇区中的伺服信号和数据信号的读/写装置。 伺服系统响应于从读/写装置馈送的伺服信号以产生同步信号。 数据扇区脉冲发生电路响应于同步信号以产生并传递给读/写设备，用于从扇区开始的每个数据块的数据扇区脉冲。 该数据扇区脉冲允许读/写设备在数据块上的操作。 当任何数据块被伺服脉冲分割时，控制电路能够延迟产生下一个数据扇区脉冲。 延迟周期是伺服脉冲串的持续时间和跟随伺服脉冲串的数据块的部分。
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