Disk-shaped information recording medium, recording method and reproducing method thereof, information recording device and information reproducing device thereof

摘要

A standard reproduction model for ensuring real time reproducing on a disk-shaped information recording medium, includes a pickup ( 102 ) that reads the real time data from the information recording medium, a buffer memory ( 103 ) that temporarily stores the real time data read by the pickup, and a decoding module ( 104 ) that reads the real time data from the buffer memory ( 103 ) and processes the read real time data. An access time Tacc of the standard reproduction model is expressed by the following formula, <?in-line-formulae description="In-line Formulae" end="lead"?>Tacc=A.dN+Trev+B <?in-line-formulae description="In-line Formulae" end="tail"?> where dN is a difference in rotational speed of the disk-shaped information recording medium, Trev is a rotation waiting time at a target access position, A and B are constants.