DATA REPRODUCING METHOD AND A DATA REPRODUCING APPARATUS, CAPABLE OF EFFICIENTLY READING ACCURATE SIGNAL IN A CORRESPONDING RECORDING LAYER

摘要

PURPOSE: A data reproducing method and a data reproducing apparatus are provided to efficiently control a noise signal generated by the other recording layer.;CONSTITUTION: A light receiving unit measures the light of cross-talk(S110). The light receiving unit measures the light which is income to the photo diode is measured(S120). It is determined whether to use a reproducing signal based on a parallel light by using a coherent light(S140). The reproducing signal is reproduced according t a determining result(S150).;COPYRIGHT KIPO 2011