Patent attributes
An apparatus for reading and/or writing data markings of an optical recording medium having data markings arranged along a track and header markings arranged laterally offset with respect to the center of the track, the apparatus having a header identification unit. According to the present invention an intermediate track signal is formed, which enables direction identification during the traversal of tracks. The present invention comprises an apparatus having a header sequence detector, a track crossing detector and an intermediate track detector, wherein the intermediate track detector is connected to outputs of the header identification unit, the track crossing detector and the header sequence detector, and generates an intermediate track signal.
