公开(公告)号：EP1622300A1

公开(公告)日：2006-02-01

申请号：EP04425589.1

申请日：2004-07-30

Applicant: STMicroelectronics S.r.l.

Inventor： Giovenzana, Davide ,  Dati, Angelo ,  Rossi, Augusto Andrea

IPC: H04L7/02

CPC classification number: G11B20/10009 ,  G11B20/10055 ,  G11B20/10222 ,  H04L7/0029 ,  H04L7/10

Abstract: The invention relates to a method and architecture for improving the robustness of a synchronization system through a minimum latency loop, for instance in the Hard Disk Drive applications, wherein synchronous detection processing is performed for timing recovering of a correct sampling phase and frequency and by a first acquisition step of the a known preamble signal pattern, for generating a timing periodic signal, followed by a second tracking step, for recovering phase, frequency and gain sampling errors of the synchronization signal including a header followed by an unknown data content.
Advantageously, a feedback loop including a numeric preamble generator (NPG) is provided for obtaining a reduced latency in the acquisition phase; such a numeric preamble generator (NPG) stores preamble values for different phase offset.

Abstract translation: 本发明涉及一种用于通过最小等待时间循环改善的同步系统的鲁棒性，例如在硬盘驱动器应用的方法和架构，worin同步检测处理，执行用于定时恢复正确的取样相位和频率，并通过一个 在一个已知的前导码信号模式的第一获取步骤，用于产生周期性的定时信号，然后第二跟踪步骤，用于恢复相位，频率和增益包括随后对未知数据的内容的报头中的同步信号的采样误差。 有利的是，反馈环包括一个数字前导码生成器（NPG）提供了用于在采集阶段获得一个减少的等待时间; 求数字前导码发生器（NPG），用于不同相位偏移存储前同步码的值。

公开(公告)号：EP1603134A1

公开(公告)日：2005-12-07

申请号：EP04425397.9

申请日：2004-05-31

Applicant: STMicroelectronics S.r.l.

Inventor： Dati, Angelo ,  Rossi, Augusto Andrea ,  Giovenzana, Davide

IPC: G11B27/30 ,  G11B20/12

CPC classification number: G11B27/3027 ,  G11B2220/20

Abstract: A method to improve data reliability on Hard Disk Drive systems wherein user data items are distributed across a set of independent sectors and appended to a header in order to ensure adequate signal amplitude and synchronization and wherein a first timing recovering phase is achieved to recover proper signal amplitude acquiring phase and frequency lock by a preamble field and a subsequent frame synchronous detection phase acquiring a sync mark field. The method takes advantage of at least a data sector comprising a first header including a first preamble and a first sync mark field and a second header including a second preamble and a second sync mark field.

Abstract translation: 一种用于提高硬盘驱动器系统上的数据可靠性的方法，其中用户数据项分布在一组独立扇区上并附加到报头，以便确保足够的信号幅度和同步，并且其中实现第一定时恢复阶段以恢复适当的信号 幅度采集相位和前同步码字段的频率锁定以及随后的帧同步检测阶段获取同步标记字段。 该方法利用至少一个数据扇区，该数据扇区包括包括第一前同步码和第一同步标记字段的第一标题，以及包括第二前同步码和第二同步标记字段的第二标题。