Patent ID: 7864648

Claim:
An information storage medium for use with a recording and/or reproducing apparatus, the information storage medium comprising: an additional data area comprising: a first sub-additional data area comprising a first sync pattern; and a second sub-additional data area comprising a second sync pattern; and a data area comprising a sub-data area comprising a third sync pattern, wherein: the first sync pattern is different from the second sync pattern, the third sync pattern is different from the first sync pattern and the second sync pattern to enable the apparatus to distinguish the additional data area from the data area when the information storage medium is used with the apparatus, each of the first sync pattern, the second sync pattern, and the third sync pattern comprises a sync ID and a sync body, the sync body does not satisfy a run-length-limited (RLL) (d, k) code having a minimum constraint of d and a maximum constraint of k, the data area does not comprise any data frame comprising the first sync pattern, and the data area does not comprise any data frame comprising the second sync pattern.