MEHRLAGIGE OPTISCHE PLATTE MIT MODULATION DER SPURRILLE
摘要
A record carrier is for recording information by writing marks in a track. The record carrier has at least a first recording layer ( 40 ) and a second recording layer ( 41 ). Each layer has a pregroove ( 14 ) indicating the position of the track and exhibiting a wobble modulated for representing physical address information. In addition the pregroove has a pregroove modulation ( 13 ) consituted by variations of a physical parameter related to the shape of the pregroove for encoding axiliary control information. In a scanning device the pregroove modulation is detected in the main detector signal by variations of the reflected radiation.
申请公布号
AT360871(T)
申请公布日期
2007.05.15
申请号
AT20040719552T
申请日期
2004.03.11
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.
发明人
WOERLEE, PIERRE, H.;KOPPERS, WILHELMUS, R.;MARTENS, HUBERT, C., F.;VAN DEN OETELAAR, RONALD, J., A.;SPRUIT, JOHANNES, H., M.