Data recording method and device, and data-recorded phase-change optical disc

A phase-change optical disc formatting method comprising:

• formatting a phase-change optical disc so that signal characteristics of an area in which at least one of a file structure and application data is to be recorded are substantially equal to signal characteristics of a format area.

A phase-change optical disc formatted such that signal characteristics of an area of the phase-change optical disc in which at least one of a file structure and application data is to be recorded are substantially equal to signal characteristics of a format area of the phasechange optical disc.

A data recording method comprising:

• recording data in an optical disc including a format area and a user data area, wherein recorded signals in the user area have jitter not greater than jitter of recorded signals in the format area.

A data recording method comprising:

• recording data in a format area of a phase-change rewritable optical disc by irradiating the phase-change rewritable optical disc with a first light beam at a linear recording speed which is maximum for the phase-change rewritable optical disc to initialize the phase-change rewritable optical disc;
• and
• recording data in a user area of the phase-change rewritable optical disc by irradiating the phase-change rewritable optical disc with a second light beam at a linear recording speed slower than the maximum linear recording speed so that recorded signals in the user area have jitter not greater than jitter of recorded signals in the format area.

A phase-change rewritable optical disc in which data is recorded in a format area and in a user area, wherein the recorded signals in the user area have jitter not greater than jitter of the recorded signals in the format area.

A phase-change rewritable optical disc, wherein data is recorded in a format area thereof by irradiating the phase-change rewritable optical disc with a first light beam at a linear recording speed which is maximum for the phase-change rewritable optical disc, and wherein data is recorded in a user data area by irradiating the phase-change rewritable optical disc with a second light beam at a linear recording speed which is lower than the maximum linear recording speed.

A data recording method comprising:

• recording new data in a user data block in a fixed length packet formatted in an optical disc to rewrite former data recorded in the user data with the new data,
• wherein the fixed length packet comprises a link block, wherein the recording is performed while recording new link block data in the link block, and wherein the new link block data is different from former link block data recorded in the link block.