OPTICAL RECORDING/REPRODUCTION DEVICE AND METHOD

摘要

An optical recording/reproduction device according to an embodiment of the present invention records data on a recording medium in which one or more recording layers on which data is recorded and a guide layer used for positioning are layered so as to be separated from one another, and comprises an end position detection unit and a postscript start position setting unit. The end position detection unit detects the end position of first data when a recorded region relating to said first data exists in a first recording layer of the recording medium and second data is to be newly recorded on the first recording layer. The postscript start position setting unit sets the recording start position of the second data to a position that overlaps more with the recorded region than the end position.