Optical disc having data recorded in an encoded block form for improving

Abstract

An optical disc and an optical disc apparatus having an improved error correction capability. In an optical disc on which is recorded data encoded using an encoding block of a pre-set data volume as a unit for encoding, a data volume V of the encoding block is the maximum number among data volume values of the encoding block that satisfies the relation VX(1+R)XD<L0, and that can be expressed by the powers of 2, where L0 is the innermost track length, R is the redundancy of encoding, and D is the code length per bit. In this manner, the encoding block is of a size corresponding or substantially corresponding to the entire innermost track of an optical disc.