Patent ID: 8565055
Filing Date: 2013-10-22
Classification: G11B

Abstract:
1. An apparatus for recording address information to a disc medium, the apparatus comprising: means for generating address information including a sync signal part, the sync signal part including a plurality of consecutive sync blocks, each sync block including a monotone bit followed by a sync bit, and a data part including address data, wherein the address data is formed of a plurality of consecutive ADIP (address in pre-groove) blocks, each ADIP block including a single first bit followed by a plurality of ADIP bits; means for making MSK modulation of a carrier signal correspondingly to the address information generated by the address information generating means to generate an MSK modulation signal; and means for forming, on the disc medium, a spiral groove wobbled adaptively to the MSK modulation signal generated by the modulating means, wherein the address data consists of fifteen ADIP blocks.