JP2005293820A5

JP2005293820A5 -

Info

Publication number: JP2005293820A5
Application number: JP2005035456A
Authority: JP
Filing date: 2005-02-14
Publication date: 2008-01-17

Claims

An optical recording medium comprising a recording layer on which information is recorded and reproduced by irradiation of laser light on a substrate provided with an information track comprising a guide groove for tracking laser light,
Of the information track, the thicker recording layer of the groove portion near the laser light irradiation surface and the land portion far from the laser light irradiation surface is the recording track, and either the groove portion or the land portion of the recording layer is the recording track. An optical recording medium on which recording track information indicating whether the film thickness is thick is recorded.

An optical recording medium comprising a recording layer on which information is recorded and reproduced by irradiation of laser light on a substrate provided with an information track comprising a guide groove for tracking laser light,
The recording layer of the land part far from the laser light irradiation surface is thicker than the groove part near the laser light irradiation surface in the information track , the land part is used as a recording track, and the land part is more than the groove part. An optical recording medium on which recording track information indicating that the recording layer is thicker is recorded.

3. The optical recording medium according to claim 1, wherein tracking control is not required when reading the recording track information.

4. The optical recording medium according to claim 3, further comprising an identification information area for recording the recording track information.

5. The optical recording medium according to claim 4, wherein the recording track information is recorded in a barcode shape that is a set of radial lines.

3. The optical recording medium according to claim 1, further comprising a read-only lead-in area for recording the recording track information.

7. The optical recording medium according to claim 6, wherein the recording track information is recorded in the lead-in area by wobbling the guide groove in a radial direction.

The optical recording medium according to claim 1, wherein the recording layer is irradiated with laser light from a surface opposite to the substrate.

The optical recording medium according to claim 1, comprising a plurality of the recording layers.

The optical recording medium according to claim 1, wherein the recording layer is formed by a spin coating method.

The optical recording medium according to claim 10, wherein the recording layer is made of an organic dye-based recording material.

A method for producing an optical recording medium comprising a recording layer on which information is recorded and reproduced by irradiation of laser light on a substrate provided with an information track comprising a guide groove for tracking laser light,
Of the information track, the thicker recording layer of the groove portion near the laser light irradiation surface and the land portion far from the laser light irradiation surface is the recording track, and either the groove portion or the land portion of the recording layer is the recording track. A method of manufacturing an optical recording medium, wherein recording track information indicating whether the film thickness is thick is recorded.

A method for producing an optical recording medium comprising a recording layer on which information is recorded and reproduced by irradiation of laser light on a substrate having an information track comprising a guide groove for tracking laser light,
The recording layer of the land part far from the laser light irradiation surface is thicker than the groove part near the laser light irradiation surface in the information track , the land part is used as a recording track, and the land part is more than the groove part. A method for manufacturing an optical recording medium, wherein recording track information indicating that the recording layer is thicker is recorded .

A recording layer on which information is recorded and reproduced by laser light irradiation is provided on a substrate having an information track made up of a guide groove for tracking laser light, and a groove near the laser light irradiation surface in the information track is provided. The recording track information indicating which one of the groove portion and the land portion is thicker is recorded as a recording track of the land portion and the land portion far from the laser light irradiation surface. In the optical recording medium being
Read the recording track information recorded on the optical recording medium,
Based on the recording track information, determine whether to record information in the groove part or land part,
Based on the determination, information is recorded.
Recording method for optical recording medium.

A recording layer on which information is recorded and reproduced by laser light irradiation is provided on a substrate having an information track made up of a guide groove for tracking laser light, and a groove near the laser light irradiation surface in the information track is provided. The recording track information indicating which one of the groove portion and the land portion is thicker is recorded as a recording track of the land portion and the land portion far from the laser light irradiation surface. In the optical recording medium being
Read the recording track information recorded on the optical recording medium,
Based on the recording track information, determine whether information is recorded in the groove part or land part,
Based on the determination, information is reproduced.
A method for reproducing an optical recording medium.

A recording layer on which information is recorded and reproduced by laser light irradiation is provided on a substrate having an information track made up of a guide groove for tracking laser light, and a groove near the laser light irradiation surface in the information track is provided. The recording track information indicating which one of the groove portion and the land portion is thicker is recorded as a recording track of the land portion and the land portion far from the laser light irradiation surface. A recording apparatus that records information by irradiating a laser beam to an optical recording medium that is,
A reading unit for reading the recording track information recorded on the optical recording medium;
A determination unit that determines whether information is recorded in a groove portion or a land portion based on the recording track information;
A recording unit for recording information based on the determination;
An information recording apparatus comprising:

A recording layer on which information is recorded and reproduced by laser light irradiation is provided on a substrate having an information track made up of a guide groove for tracking laser light, and a groove near the laser light irradiation surface in the information track is provided. The recording track information indicating which one of the groove portion and the land portion is thicker is recorded as a recording track of the land portion and the land portion far from the laser light irradiation surface. An information reproducing apparatus that reproduces information by irradiating a laser beam to an optical recording medium that is used,
A reading unit for reading the recording track information recorded on the optical recording medium;
A determination unit that determines whether information is recorded in a groove portion or a land portion based on the recording track information;
Based on the determination, a playback unit that plays back information;
An information reproducing apparatus comprising: