| 摘要 |
PROBLEM TO BE SOLVED: To improve S/N, to prevent the wobble of a reproduced signal and to preliminarily record a pit series showing information such as an address by providing the pit series of the information pattern of a scattered value and a groove for tracking which is wider than the width of a pit and wobbled at a predetermined frequency. SOLUTION: This disc recording medium has a pit series 31 in which information such as an address is formed as the information pattern of a scattered value and also has a groove 32 which is wider than the width of a pit and formed by being wobbled on the basis of a predetermined frequency of 22.05kHz on its disk. Data is recorded in the inside of the groove 32. Accordingly, since the groove 32 is wide, even when data is recorded in the inside of the groove 32, the deterioration of S/N can be prevented, and also differently to the case in which data is recorded in a land, the wobble of a reproduced signal can be prevented. |
