<p>The invention relates to a MO-ROM medium with a small track width, wherein data is recorded at least on one side of a disk wherein a data side has on a substrate at least a recording layer wherein said data is recorded and at least a read-out layer to reproduce said data recorded in said recording layer during read-out. Recorded data is arranged within adjacent data tracks on said disk and a recording density within a data track is beyond the diffraction limited density of the focussing optics. By arrangement of the data tracks in groups of several adjacent data tracks wherein a track width within a data track group is at least less than the diffraction limit of the focussing optics and providing reference means for tracking a selected data track group with said read-out laser beam a specific data track of each data track group can be read-out by adjusting a proper offset value within the radial tracking unit.</p>
申请公布号
WO2004032123(A1)
申请公布日期
2004.04.15
申请号
WO2003IB04006
申请日期
2003.09.12
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;VERSCHUREN, COEN, A.;VAN SOMEREN, BOB