SIGNAL PROCESSING SYSTEM AND INFORMATION STORAGE MEDIUM

According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, a...

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Bibliographische Detailangaben
Hauptverfasser:	WATABE KAZUO, OHSAWA HIDEAKI, NODA CHOSAKU, NAITO NOBUMASA, YOSHIDA NOBUHISA, NAGAI YUJI, MORISHITA NAOKI, OGAWA AKIHITO, NAKAMURA NAOMASA, SATO HIROHARU, KANESHIGE TOSHIHIKO, KURODA KAZUTO, YAMADA HISASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with /(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is 2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.