| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical information recording medium capable of precisely reproducing pre-format information by a recording/reproducing player. SOLUTION: In the optical information recording medium 1 that a pre-groove (guide groove) is meanderingly wobbled based on a signal composing address information and control information to a reference signal having a prescribed frequency as a means beforehand forming the address information of the optical information recording medium 1 and the control information for recording/ reproducing on a substrate as the pre-format information, it is constituted so that a track pitch (TP2) of an area (Lin area recording TOC information) superimposed with the control information is wider than the track pitch (TP1) of the area (program area) recording the data. Thus, the recording density of the Lin area of the optical information recording medium is reduced, and the pre-format information is made easy to be reproduced for a recording/ reproducing beam spot size. |
