Optical disc controller and optical disc device

Details Optical disc controller and optical disc device Optical disc controller and optical disc device

2003-10-23

2009-02-24

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S030210, C369S030220

Reexamination Certificate

active

07496006

ABSTRACT:
An optical disc controller of the present invention servo-controls an optical disc device which comprises a disc motor rotating an optical disc and an optical head emitting a light beam for recording data on the optical disc and/or reproducing data from the optical disc. The optical disc controller comprises: a variable clock output section for outputting a plurality of clock signals of different frequencies, and a control section which receives from the optical head a signal indicating a deviation from a predetermined target value to servo-control the light beam of the optical disc device and performs an operation according to the signal indicating the deviation so as to obtain and output a signal indicating a control amount. The variable clock output section changes a frequency of the clock signal according to a recording speed and/or a reproducing speed when the optical disc device performs recording and/or reproduction, and the control section performs an operation to be performed in synchronization with the clock signal of the variable clock output section.

REFERENCES:
patent: 4623994 (1986-11-01), Nabeshima et al.
patent: 4907214 (1990-03-01), Nagano et al.
patent: 5140571 (1992-08-01), Nishida et al.
patent: 5337295 (1994-08-01), Maeda
patent: 6009056 (1999-12-01), Araki et al.
patent: 6317395 (2001-11-01), Yamamoto et al.
patent: 6507544 (2003-01-01), Ma et al.
patent: 7085200 (2006-08-01), Okada et al.
patent: 7304920 (2007-12-01), Arai et al.
patent: 2002/0080693 (2002-06-01), Ma et al.
patent: 2002/0145955 (2002-10-01), Turner et al.
patent: 2006/0104168 (2006-05-01), Arai
patent: 1085509 (2001-03-01), None
patent: 1310951 (2003-05-01), None
patent: 1575038 (2005-09-01), None
patent: 03-080437 (1991-04-01), None
patent: 06-036301 (1994-02-01), None
patent: 08-329506 (1996-12-01), None
patent: 11-025486 (1999-01-01), None
patent: 11025486 (1999-01-01), None
patent: 2000-075966 (2000-03-01), None
patent: 2000-0232964 (2000-08-01), None
patent: 2001-243710 (2001-09-01), None
patent: 2003-045058 (2003-02-01), None
Chinese Office Action dated Jan. 27, 2006, corresponding to Chinese Patent Appln. No. 200310102552.5.
Japanese Notice of Reasons for Rejection issued to the corresponding Japanese Patent Application No. 2003-359469; Mailed Jul. 22, 2008; 6 pages.
European Search Report issued to the corresponding European Patent Application No. 04024402.2; Issued Jul. 25, 2008; 3 pages.
Taiwanese Official Letter issued to the corresponding Taiwanese Patent Application No. 92129307; Dated Aug. 27, 2008; 7 pages.

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