Reproduction apparatus and focus jump method

Details Reproduction apparatus and focus jump method Reproduction apparatus and focus jump method

2005-04-08

2009-11-03

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S094000

Reexamination Certificate

active

07613092

ABSTRACT:
The invention provides a reproduction apparatus that reproduces information recorded in a recording medium having plural recording layers, including: an optical head that irradiates laser beams on the respective recording layers and detects reflected light information to read out information recorded in the respective recording layers; a shaft sliding type focus actuator that holds the object lens; a focus servo section that generates a focus servo drive signal and drives the focus actuator such that a focus state of the laser beams is kept in a state of focus on a recording layer on which the reproduction is performed; and a focus jump control section that generates a kick signal for starting focus jump movement by the focus actuator and a brake signal for ending the focus jump movement.

REFERENCES:
patent: 5903530 (1999-05-01), Tateishi et al.
patent: 6091680 (2000-07-01), Matsuda et al.
patent: 6147942 (2000-11-01), Abe et al.
patent: 6151280 (2000-11-01), Naohara et al.
patent: 6370093 (2002-04-01), Tada et al.
patent: 6552971 (2003-04-01), Iida
patent: 6775208 (2004-08-01), Liu et al.
patent: 2001/0024408 (2001-09-01), Kobayashi
patent: 2002/0089912 (2002-07-01), Kobayashi
patent: 2003/0012096 (2003-01-01), Kitaoka et al.
patent: 2003/0112720 (2003-06-01), Chiang
patent: 2004/0125708 (2004-07-01), Ono
patent: 2004/0264312 (2004-12-01), Komma et al.
patent: 59-42649 (1984-03-01), None
patent: 8-115576 (1996-05-01), None
patent: 10-97720 (1998-04-01), None
patent: 11-167725 (1999-06-01), None
patent: 11-316954 (1999-11-01), None
patent: 2000-268372 (2000-09-01), None

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