Optical disc device and optical disc reproduction method
AssigneeFunai Electric Co., Ltd.
InventorHirotaka MINARI
Life of this patent
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Abstract
An optical disc device is configured to reproduce an optical disc. The optical disc device includes an optical pickup, a high-frequency production component, a driver and a controller. The optical pickup includes a laser emission component configured to emit a laser beam, and a light receiver configured to receive returning light of the laser beam. The high-frequency production component is configured to produce a high-frequency signal. The driver is configured to produces a drive signal for driving the laser emission component by superposing the high-frequency signal produced by the high-frequency production component onto a specific drive signal. The controller is configured to control the high-frequency production component to adjust an amplitude of the high-frequency signal.
Claims18
An optical disc device configured to reproduce an optical disc, the optical disc device comprising:
- an optical pickup including a laser emission component configured to emit a laser beam, and a light receiver configured to receive returning light of the laser beam;
- a high-frequency production component configured to produce a high-frequency signal;
- a driver configured to produces a drive signal for driving the laser emission component by superposing the high-frequency signal produced by the high-frequency production component onto a specific drive signal;
- and
- a controller configured to control the high-frequency production component to adjust an amplitude of the high-frequency signal.
An optical disc reproduction method configured to reproduce an optical disc, the method comprising:
- emitting a laser beam to the optical disc with a laser emission component;
- receiving returning light of the laser beam;
- producing a high-frequency signal;
- producing a drive signal for driving the laser emission component by superposing the high-frequency signal onto a specific drive signal;
- and
- adjusting an amplitude of the high-frequency signal.
Dependencies are inferred from the claim text.