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    • 7. 发明授权
    • Method and apparatus for thermal asperity recovery for word sync detection in data channels
    • 用于数据通道中字同步检测的热粗糙度恢复的方法和装置
    • US06583941B1
    • 2003-06-24
    • US09522111
    • 2000-03-09
    • Jonathan Darrel CokerRichard Leo GalbraithTodd Carter TruaxDonald Earl Vosberg
    • Jonathan Darrel CokerRichard Leo GalbraithTodd Carter TruaxDonald Earl Vosberg
    • G11B509
    • G11B20/24G11B5/09G11B20/1403G11B27/3027G11B27/36G11B2220/20
    • A method and apparatus are provided for thermal asperity recovery for word sync detection in data channels. A word sync field contains a plurality of word sync patterns. A word sync detector receives a read signal of the word sync field. The word sync detector identifies a first subset of the plurality of word sync patterns and starts a customer data read. When the word sync detector fails to identify the first subset of the plurality of word sync patterns, the read signal of the word sync field is received again. Then the word sync detector identifies a second predefined subset of the plurality of word sync patterns and starts a customer data read. A single word sync field is used instead of the conventional dual word sync fields required for each sector. The second predefined subset of the plurality of word sync patterns is smaller than the first subset. For example, when the first subset is defined as 4 of 8, the second predefined subset is 2 of 8. For example, when the first subset is defined as 6 of 12, the second predefined subset is 2 of 12.
    • 提供了一种用于数据通道中的词同步检测的热凹凸恢复的方法和装置。 字同步字段包含多个字同步模式。 字同步检测器接收字同步字段的读信号。 字同步检测器识别多个字同步模式的第一子集,并开始客户数据读取。 当字同步检测器不能识别多个字同步模式的第一子集时,再次接收字同步字段的读信号。 然后,字同步检测器识别多个字同步模式的第二预定义子集,并开始客户数据读取。 使用单个字同步字段而不是每个扇区所需的常规双字同步字段。 多个字同步模式的第二预定义子集小于第一子集。 例如,当第一子集被定义为8的4时,第二预定义子集是8的第二子集。例如,当第一子集被定义为12的第6子集时,第二预定义子集是12。