Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2011-06-21
2011-06-21
Chow, Van N (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
C369S047220
Reexamination Certificate
active
07965604
ABSTRACT:
In step S1, the address generator generates address information composed of a sync signal which is recorded on an optical disc, address data and an error correction code for the address data, pre-encodes and supplies it to a modulator. At the same time, a carrier signal generator generates a carrier signal which is to carry the address information, and supplies it to the modulator. In step S2, the modulator makes MSK modulation of the carrier signal supplied from the carrier signal generator on the basis of the pre-encoded address information supplied from the address generator, and supplies a resultant MSK modulation signal to a wobbling unit. In step S3, the wobbling unit forms, on the optical disc, a spiral groove wobbled adaptively to the MSK modulation signal supplied from the modulator. In this optical disc, a given address can be accessed quickly and accurately.
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Office Action issued Feb. 8, 2011, in Japanese Patent Application No. 2010-106583.
Iimura Shinichiro
Kobayashi Nobuyoshi
Kobayashi Shoei
Yamagami Tamotsu
Chow Van N
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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