Disc-shaped recording medium disc driving device and method...

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel

Reexamination Certificate

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Details

C369S124040, C369S275300

Reexamination Certificate

active

07123557

ABSTRACT:
The information such as address is to be efficiently formed into wobble components and further the S/N ratio in reproducing the information formed into the wobble components is to be improved. In an optical disc of the present invention, there are recorded in a wobble the address information modulated in accordance with the MSK (minimum shift keying) system and the address information modulated in accordance with a modulation system in which even harmonics signals are added to a sinusoidal carrier signal and in which the polarity of the harmonics signal is changed depending on the sign of the data for modulation.

REFERENCES:
patent: 6075761 (2000-06-01), Akiyama et al.
patent: 6201773 (2001-03-01), Aoki
patent: 6714508 (2004-03-01), Spruit et al.
patent: 2000-137930 (2000-05-01), None
patent: 2001-118255 (2001-04-01), None
patent: 2001-126413 (2001-05-01), None
patent: 2001-143273 (2001-05-01), None
patent: 2002-342941 (2002-11-01), None
patent: 2002-358659 (2002-12-01), None
patent: WO 02/21518 (2002-03-01), None
NIKKEI Electronics, May 21, 2001, No. 796, p. 49-56.

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