Master device for optical recording medium producing method, has secondary track structure exhibiting disruptions, which vary optically detectable surface property of recording medium such that auxiliary information is produced on medium
DE102005027222A1
Recording medium e.g. CD/DVD, for use with information recording and reproducing device, has track deflected from deflection areas, where deflection amplitude and length of non-deflected deflection area are assigned to auxiliary information
DE102005018089A1
Optical recording medium, has pilot mark regions with pilot marks that do not extend into track, and arranged in sections alternatively on respective opposite side of track and at same radial distance to center of track
EP1486957A1
Writable optical recording medium with servo track and method for producing the servo track
