Recording medium, signal recording apparatus thereof, and signal reproducing apparatus thereof

The invention relates to a recording medium, a corresponding recording apparatus and a corresponding reproducing apparatus. On the recording medium data are recorded as a sector and the sector is composed of a plurality of frames. The recording medium comprises a synchronous pattern disposed at a first portion of each of said frames, whereby the synchronous pattern represents a frame synchronization. Furthermore, a signal pattern is disposed at the first frame of the sector and adjacent to the synchronous pattern, whereby the signal pattern represents a delimitation of the sector.