Information recording method and apparatus

摘要

An information recording method for recording information on a rewritable recording medium include recording synchronizing signal information in a synchronizing signal portion on the rewritable recording medium, and recording data information in a data portion of the writable recording medium after the synchronizing signal portion by forming a record mark in the data portion. The data information corresponds to both ends of each record mark. Each time the synchronizing signal information is recorded, a length of the synchronizing signal portion changes and a start position of the synchronizing signal portion changes, and each time the data information is recorded, the record mark and space between the record mark are substantially inverted.