Patent ID: 7965591
Filing Date: 2011-06-21
Classification: G11B

Abstract:
1. A method of manufacturing an information recording medium having a recording layer which has a groove track and a land track, such that only one of the land track and the groove track is to be selected as an information recording track of the recording layer, such that information is to be recorded on only the selected one of the land track and the groove track of the recording layer, and such that the one of the land track and the groove track onto which the information is to be recorded has a wobbled portion having address information, wherein the information recording medium includes a data area onto which the information is to be recorded and includes a BCA area storing, in a form of barcode marks, information related to the information recording medium, the BCA area being concentrically located closer to a center of the information recording medium than the data area, wherein the wobbled portion includes a fundamental waveform signal having a fundamental frequency, and the wobbled portion includes a signal that is different from the fundamental frequency, wherein the signal that is different from the fundamental frequency is added to or subtracted from a part of the fundamental waveform signal, so as to add the address information to the wobbled portion, and wherein the method comprises: