New Wobble-Address Format for an Optical Disc with a Separated Guide Layer
Abstract
We propose a physical address format suitable for the separated guide layer of a multilayered optical disc. Since the track format of the guide layer is different from that of conventional multilayered discs, a novel address format is required. The proposed format adopts a land-and-groove-track structure to generate a stable tracking signal. The address information for land and groove tracks is physically premastered by the wobbling and width-modulating of grooves. We fabricated a replicated disc sample with the proposed format and demonstrated a sufficiently low bit error rate by an experiment. Consequently, we considered that the format is a promising solution for the physical format for multilayered discs with a separated guide layer.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- September 2013
- DOI:
- 10.7567/JJAP.52.09LC02
- Bibcode:
- 2013JaJAP..52iLC02O