RECORD CARRIER AND DEVICE SCANNING THE RECORD CARRIER

摘要

PROBLEM TO BE SOLVED: To provide a record carrier and a device in which the synchronization is more reliable. SOLUTION: The record carrier has a servo track indicating an information track intended for recording information blocks. The servo track has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element or of a word sync type having a word sync element. The bit sync element, word sync element and the data bit element are modulated according to a same predetermined type of modulation of the periodic variation. The distance between all elements constituting the modulated parts are unique. COPYRIGHT: (C)2008,JPO&INPIT