OPTICAL DISC AND RECORDING/REPRODUCING APPARATUS THEREFOR

摘要

Address blocks (16, 17, 18 and 19) where identifiable information including address numbers (13) and redundant order numbers (14) is recorded are provided in a selector address area (5), and are grouped in pairs. The address groups are staggered with radial pitches of about a half track pitch along the center line of the track (2).