Optical disc apparatus, gain setting method and program
AssigneeSony Corporation
InventorHideo KATO
Life of this patent
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Abstract
There is provided an optical disc apparatus that includes a sound pickup portion, an optical pickup to record a sound picked up by the sound pickup portion as audio data onto an optical disc using laser light, a focus adjustment portion to adjust a focal position of the laser light based on the focus drive signal, a tracking control portion to control tracking so that the optical pickup traces a track formed on the optical disc, and a gain setting portion to change the gain of the focus drive signal during a first period when adjustment of the focal position of the laser light by the focus adjustment portion is performed and control by the tracking control portion is not performed according to a level of an operation sound of the focus adjustment portion.
Claims8
An optical disc apparatus comprising:
- a sound pickup portion;
- an optical pickup to record a sound picked up by the sound pickup portion as audio data onto an optical disc using laser light;
- a signal generation portion to generate a focus drive signal having a designated gain with respect to a focus error signal;
- a focus adjustment portion to adjust a focal position of the laser light based on the focus drive signal generated by the signal generation portion;
- a tracking control portion to control tracking so that the optical pickup traces a track formed on the optical disc;
- an operation sound extraction portion to extract an operation sound of the focus adjustment portion from the sound picked up by the sound pickup portion;
- and
- a gain setting portion to change the gain of the focus drive signal during a first period when adjustment of the focal position of the laser light by the focus adjustment portion is performed and control by the tracking control portion is not performed according to a level of the operation sound extracted by the operation sound extraction portion.
A program causing a computer installed in an optical disc apparatus including a sound pickup portion, an optical pickup to record a sound picked up by the sound pickup portion as audio data onto an optical disc using laser light, a signal generation portion to generate a focus drive signal having a designated gain with respect to a focus error signal, a focus adjustment portion to adjust a focal position of the laser light based on the focus drive signal generated by the signal generation portion, and a tracking control portion to control tracking so that the optical pickup traces a track formed on the optical disc to implement functions comprising:
- an operation sound extraction portion to extract an operation sound of the focus adjustment portion from the sound picked up by the sound pickup portion;
- and
- a gain setting portion to change the gain of the focus drive signal during a first period when adjustment of the focal position of the laser light by the focus adjustment portion is performed and control by the tracking control portion is not performed according to a level of the operation sound extracted by the operation sound extraction portion.
A gain setting method executed in an optical disc apparatus including a sound pickup portion, an optical pickup to record a sound picked up by the sound pickup portion as audio data onto an optical disc using laser light, a signal generation portion to generate a focus drive signal having a designated gain with respect to a focus error signal, a focus adjustment portion to adjust a focal position of the laser light based on the focus drive signal generated by the signal generation portion, and a tracking control portion to control tracking so that the optical pickup traces a track formed on the optical disc, the method comprising the steps of:
- extracting an operation sound of the focus adjustment portion from the sound picked up by the sound pickup portion;
- and
- changing the gain of the focus drive signal during a first period when adjustment of the focal position of the laser light by the focus adjustment portion is performed and control by the tracking control portion is not performed according to a level of the operation sound.
Dependencies are inferred from the claim text.