Disclosed are a reproducing apparatus and a reproducing method in which a run length code to be recorded on a disc is subjected to a modulation in a width direction to multiplex sub data, and an offset at a time of signal level detection is reduced....http://www.google.es/patents/US6061319?utm_source=gb-gplus-sharePatente US6061319 - Optical disk reproducing apparatus and optical disk reproducing method
Optical disk reproducing apparatus and optical disk reproducing method
