公开(公告)号：US5278703A

公开(公告)日：1994-01-11

申请号：US719885

申请日：1991-06-21

申请人： Bernardo Rub ,  Robert Frame ,  John E. DeRoo ,  Samuel B. Skraly ,  Anne Solli

发明人： Bernardo Rub ,  Robert Frame ,  John E. DeRoo ,  Samuel B. Skraly ,  Anne Solli

IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B5/09

CPC分类号： G11B20/1258 ,  G11B20/10 ,  G11B20/1403 ,  G11B2020/1282

摘要： A data processing system records information on magnetic disks in a format in which sector headers, which include embedded servo information, are radially aligned and recorded at a single frequency and data are recorded at various band-related frequencies. The system records sector headers at a frequency which is optimal for the recording of address information in the shortest sector and records the data at frequencies which are optimal for the recording of information in the disk space allocated to the data portion of the various lengths of sectors. The system synchronizes to the headers, using conventional embedded servo synchronization methods, and produces header timing signals. It can then use the same header timing signals to locate and interpret the headers on different tracks, since the header frequency and the location of the headers are the same in every track. The system may record the data portions of the sectors at frequencies which are related to the header frequency by ratios of small integers. The system then uses, in synchronizing to the disk, a phase locked loop which includes a voltage controlled oscillator (VCO) that is driven to a reference frequency which is directly related to the header frequency. The system divides-down the frequency of the VCO output signal to produce the timing signals for the header. Also, it uses a version of the output signal of the VCO, which is divided-down by a band-related value, as a timing signal for the data.

摘要翻译： 数据处理系统以包括嵌入式伺服信息在内的扇区头部以单个频率径向对准并记录的格式记录磁盘上的信息，以各种频带相关的频率记录数据。 该系统以对于最短扇区中的地址信息的记录是最佳的频率记录扇区头部，并将数据记录在分配给各种扇区的数据部分的磁盘空间中用于记录信息的最佳频率 。 该系统使用传统的嵌入式伺服同步方法与报头同步，并产生报头定时信号。 然后可以使用相同的报头定时信号来定位和解释不同轨道上的报头，因为报头频率和报头的位置在每个轨道上相同。 系统可以通过小整数的比率来记录与标题频率相关的频率的扇区的数据部分。 然后，该系统在与磁盘同步时使用锁相环，该锁相环包括被驱动到与标题频率直接相关的参考频率的压控振荡器（VCO）。 该系统将VCO输出信号的频率降低，以产生头部的定时信号。 此外，它使用VCO的输出信号的一个版本作为数据的定时信号，该版本被频带相关的值分频。