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US 6,285,638 B1Granted
Disk and disk recording apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShinichi Konishi, Fumiaki Ueno
Life of this patent
Estimating the term…
Abstract
A disk of the present invention includes a first storage area for reproducing data and a second storage area for recording and reproducing data, the number of sectors in each track in the first and second storage areas close to each other is larger in the first storage area than in the second storage area, and leading edges of sectors in each track in the first storage area are aligned in at least one line in a radius direction.
Claims11
A disk recording apparatus, comprising:
- a light source for irradiating a master optical disk having a first storage area for reproducing data and a second storage area for recording and reproducing data;
- a light beam splitter for splitting a light beam from the light source into a first light beam for forming pits in the first storage region and a second light beam for forming grooves and headers in the second storage area;
- a first light modulator for modulating the first light beam for forming the pits in the first storage area;
- a first controller for controlling the first light modulator based on recording data;
- a second light modulator for modulating the second light beam for forming the grooves and the headers in the second storage area;
- a second controller for controlling the second light modulator based on the recording data;
- a light beam deflector for deflecting the second light beam output from the second light modulator at a right angle of a track direction;
- a light beam deflection controller for controlling the light beam deflector;
- a first beam shaping unit for shaping the first light beam from the first light modulator;
- a second beam shaping unit for shaping the second light beam from the light beam deflector;
- a light beam combining unit for matching an optical axis of the first light beam from the first beam shaping unit with an optical axis of the second light beam from the second beam shaping unit;
- an objective lens for receiving a light beam from the light beam combining unit and condensing the light beam onto the master optical disk;
- a motor for rotating the master optical disk;
- a motor controller for controlling the motor;
- and
- a timing controller for controlling a timing of the first and second controller and the light beam deflection controller, based on one rotation synchronization signal from the motor controller,
- wherein the first controller generates a recording signal so that leading edges of respective sectors in the first storage area are radially arranged, and the recording signal controls the first light modulator.
14 more elements
A disk recording apparatus, comprising:
- a light source which forms pits in a first storage area for reproducing data and forms grooves and headers in a second storage area for recording and reproducing data in a master optical disk;
- a light modulator for modulating a light beam from the light source;
- a light modulation controller for controlling the light modulator based on recording data;
- a light beam deflector for deflecting a light beam from the light modulator at a right angle of a track direction;
- a light beam deflection controller for controlling the light beam deflector;
- a beam shaping unit for shaping a light beam from the light beam deflector;
- an aperture diaphragm for switching an aperture limit of a light beam from the beam shaping unit between the first storage area and the second storage area;
- an objective lens for condensing a light beam from the aperture diaphragm onto the master optical disk;
- a motor for rotating the master optical disk;
- a motor controller for controlling the motor;
- and
- a timing controller for controlling a timing of the light modulating controller and the light beam deflection controller, based on one rotation synchronization signal from the motor controller,
- wherein the light modulation controller generates a recording signal so that leading edges of respective sectors in the first storage area are radially arranged, and the recording signal controls the light modulator.
10 more elements
Dependencies are inferred from the claim text.