Optical disk device setting a gain of an amplifier so that a...

Details Optical disk device setting a gain of an amplifier so that a... Optical disk device setting a gain of an amplifier so that a...

2007-05-01

2007-05-01

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S124150, C369S059170, C369S044130

Reexamination Certificate

active

10283802

ABSTRACT:
In this optical disk device, a reflected light of a light beam reflected from a pre-pit-formed side of a track wobbled on a disk is detected as a first detection signal. A reflected light of the light beam reflected from the other side of the track is detected as a second detection signal. The first detection signal and/or the second detection signal are/is amplified with a gain(s) so set that a peak value of a wobble signal component of the first detection signal coincides with a bottom value of a wobble signal component of the second detection signal.

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patent: 6339581 (2002-01-01), Yoshida et al.
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patent: 6526007 (2003-02-01), Fujita
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patent: 1 067 524 (2001-01-01), None
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patent: 2001-23168 (2001-01-01), None
patent: 2002-117536 (2002-04-01), None
patent: 2001-331260 (2003-05-01), None

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