Optical disk reproducing method and reproducing device

摘要

The reproduction method includes steps of: performing an addition operation on a detection signal obtained by the first light-detecting element group and a detection signal obtained by the second light-detecting element group so as to generate a summation signal and outputting the summation signal to a signal processing section; performing a difference operation on a detection signal obtained by the first light-detecting element group and a detection signal obtained by the second light-detecting element group so as to generate a differential signal and outputting the differential signal to the signal processing section; digitalizing the summation signal so as to generate a binary signal, and generating a binary signal edge pulse; when an amplitude which is equal to or greater than a predetermined value of the differential signal is detected, outputting the binary signal edge pulse as a reproduction edge pulse from the signal processing section; and generating the reproduction data.