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公开(公告)号:US20100135436A1
公开(公告)日:2010-06-03
申请号:US12626338
申请日:2009-11-25
申请人: Yuji NAGAI , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
发明人: Yuji NAGAI , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
IPC分类号: H04L27/04
CPC分类号: G11B20/14 , G11B20/0021 , G11B20/00579 , G11B20/00884 , G11B20/1426 , G11B2020/1457
摘要: 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 σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, 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.
摘要翻译: 根据一个实施例,第一编码器对主信息进行编码,第二编码器对子信息进行编码,第一调制器基于第一编码器的输出调制载波,复制模块复制第二编码器的输出, 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以&sgr; /(μ×(2N)1/2)振幅调制为0.4或更小,其中传输路径或存储介质的噪声功率为2,编码子信息的数量 单位为N,对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B,电平差A-B为μ。
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公开(公告)号:US07949071B2
公开(公告)日:2011-05-24
申请号:US12626338
申请日:2009-11-25
申请人: Yuji Nagai , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
发明人: Yuji Nagai , Chosaku Noda , Kazuo Watabe , Akihito Ogawa , Kazuto Kuroda , Nobuhisa Yoshida , Nobumasa Naito , Naoki Morishita , Naomasa Nakamura , Hideaki Ohsawa , Hiroharu Sato , Hisashi Yamada , Toshihiko Kaneshige
CPC分类号: G11B20/14 , G11B20/0021 , G11B20/00579 , G11B20/00884 , G11B20/1426 , G11B2020/1457
摘要: 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 σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, 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.
摘要翻译: 根据一个实施例,第一编码器对主信息进行编码,第二编码器对子信息进行编码,第一调制器基于第一编码器的输出调制载波,复制模块复制第二编码器的输出, 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以&sgr; /(μ×(2N)1/2)振幅调制为0.4或更小,其中传输路径或存储介质的噪声功率为2,编码子信息的数量 单位为N,对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B,电平差A-B为μ。
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