RECORD MEDIUM, ITS RECORDER, ITS RECORDING METHOD, ITS REPRODUCING APPARATUS, AND ITS REPRODUCING APPARATUS

摘要

A record medium where data having a high error correctability is recorded at high effective recording density, its recorder, and its reproducing apparatus are disclosed. The recorder comprises an encoding unit that creates coded data by encoding input data by an encoding method such as a run-length encoding method, divides a data stream containing the coded data into data blocks, and outputs the data blocks, a data adding unit that adds data having the same value as the coded data of the last one bit of the previous data block of at least one data block to the first part of the at least one data block, and a recording unit. Thus, the recorder records the data blocks including the added data in prepit areas of the record medium and data recording areas thereof separated by the prepit areas.