Title:
光ディスク記録装置
Document Type and Number:
Japanese Patent JP3972741
Kind Code:
B2
Abstract:
In an optical recording apparatus having an optical pickup, a motor is provided for rotating an optical disk which is formed thereon with a guide groove to define a spiral track having a plurality of rounds. The optical pickup has a light source for generating an optical beam and a diffractive grating for diffracting the optical beam to form a main beam and a pair of sub beams opposite with each other relative to the main beam. The optical pickup is operable for irradiating the main beam to the spiral track with accompanying the pair of the sub beams along apposite sides of the spiral track. A servo circuit operates the optical pickup to enable the main beam to trace the spiral track based on a tracking error signal derived from return lights of the sub beams reflected back from the optical disk. A recording section modulates the main beam for recording of information onto the spiral track while the optical dick is rotated. A controller controls recording of information each cycle the optical disk is rotated such that the recording of information is enabled to fill one round of the spiral track and disabled to blank another round of the spiral track so as to alternate the filled rounds and the blanked rounds.
Inventors:
Katsuichi Jinbe
Akira Usui
Shinji Aoshima
Hiromitsu Shibata
Masaki
Akira Usui
Shinji Aoshima
Hiromitsu Shibata
Masaki
Application Number:
JP2002182141A
Publication Date:
September 05, 2007
Filing Date:
June 21, 2002
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
G11B7/0045; G11B7/00; G11B7/085; G11B7/007; G11B7/09; G11B7/095; G11B7/125
Domestic Patent References:
| JP7110956A | ||||
| JP8329481A | ||||
| JP1130327A |
Attorney, Agent or Firm:
Hisao Komori