Patent ID: 6594224
Filing Date: 2003-07-15
Classification: G11B

Abstract:
An optical disc comprising:a disc substrate; an information track formed on said disc substrate spirally or coaxially around a center of said disc substrate, on which an information signal including a physical sector number is to be recorded; and a guide track adjacent to said information track and formed on said disc substrate spirally or coaxially around the center, on which a guide signal including address information is to be recorded, wherein a readable emboss area, in which the information signal is recorded by an emboss pit, and an unreadable emboss area, in which an unreadable emboss pit to disable writing and reading the information signal, are formed on said information track, and the guide signal is not recorded on said guide track corresponding to the readable emboss area and the guide signal is recorded on said guide track corresponding to the unreadable emboss area.