Optical recording medium and recording device
AssigneeSony Corporation
InventorJunichi Horigome
Life of this patent
Estimating the term…
Abstract
An optical recording medium in which recording is performed by a recording device that is configured such that tracking servo control of recording light is performed by irradiating the recording light and ATS light for an adjacent track servo and by an adjacent track servo based on reflected light of the ATS light, wherein while a recording layer in which a mark is formed according to an irradiation of the recording light is included, a mark row is formed in advance by a pitch that is twice a distance between an irradiation spot of the recording light and an irradiation spot of the ATS light or greater in the recording layer.
Claims11
An optical recording medium in which recording is performed by a recording device that is configured such that tracking servo control of recording light is performed by irradiating the recording light and ATS light for an adjacent track servo and by an adjacent track servo based at least in part on reflected light of the ATS light,
- wherein while a recording layer in which a mark, formed according to an irradiation of the recording light, is included,
- a mark row is formed in advance by a pitch that is at least twice a distance between an irradiation spot of the recording light and an irradiation spot of the ATS light in the recording layer.
A recording device configured such that tracking servo control of recording light is performed by irradiating the recording light and ATS light for an adjacent track servo and an adjacent track servo based at least in part on reflected light of the ATS light with respect to an optical recording medium, the recording device comprising:
- a light irradiation and light receiving unit configured to irradiate the recording light and the ATS light on the optical recording medium in which a mark row is formed in advance by a pitch that is at least twice a distance between an irradiation spot of the recording light and an irradiation spot of the ATS light in a recording layer thereof via a common objective lens, and configured to receive the reflected light of the ATS light from the optical recording medium;
- a tracking mechanism unit configured to retain the objective lens to be displaceable in a tracking direction;
- a tracking error signal generation unit configured to generate a tracking error signal that represents an error of an irradiation spot position of the ATS light in a tracking direction with respect to a mark row that is formed in the recording layer, based at least in part on a light receiving signal of the ATS light which is obtained by the light irradiation and receiving unit;
- an adjacent track servo control unit configured to control the tracking mechanism unit so as to follow a mark row in which an irradiation spot of the ATS light is formed on the recording layer based at least in part on the tracking error signal;
- and
- a control unit configured to perform control such that trial writing in which a power of successive recording light is changed in a state in which an irradiation spot of the ATS light follows the mark row that is formed in advance by a tracking servo control by the adjacent track servo control unit.
Dependencies are inferred from the claim text.