INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCTION METHOD AND INFORMATION REPRODUCTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an information recording medium capable of properly reproducing a piece of information recorded as a wobble even when the SNR is low.SOLUTION: The information recording medium has an information track formed in a concentric circular or spiral shape in which a continuous wobble groove is previously formed, a piece of information is recorded in the groove. The information is segmented into predetermined number of wobble segments. A sync mark is positioned at plural wobble segments adjacent to a segment in the predetermined number of wobble segments. Thereby the distance between a sync mark and a data other than the sync mark is ensured.