Invention Application
US20090067090A1 NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA 有权
用于比特图形媒体的空服务模式(NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA)

NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA
Abstract:
A patterned recording media comprises a segment and a null pattern formed in the segment. The segment comprises first and second rows of discrete magnetic elements separated by a non-magnetic material, and a row of non-magnetic material positioned between the first and second rows. The null pattern comprises consecutive groups of the discrete magnetic elements in the first and second rows of the segment. Each group in the first row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the first row. Each group in the second row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the second row.
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