发明名称 |
Information reproducing method and information reproducing device |
摘要 |
An information reproducing device for reproducing digital signals with an optical head from an optical disk includes a first equalizer for waveform-equalizing a reproduction signal, an adaptive learning device for renewing the equalization properties of the first waveform equalizer with an adaptation algorithm, a memory for storing a reproduction signal, a second waveform equalizer that reads signals from the memory and performs waveform equalization after an adaptive learning operation for the first waveform equalizer has been terminated, and a demodulator for demodulating the output of the second waveform equalizer. Thus, adaptive equalization processing can be performed with constantly superior equalization properties and without sacrificing data capacity.
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申请公布号 |
US6836457(B2) |
申请公布日期 |
2004.12.28 |
申请号 |
US20030385881 |
申请日期 |
2003.03.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAKAMURA TADASHI;HINO YASUMORI;MIYATAKE NORIO |
分类号 |
G11B7/00;G11B7/005;G11B20/10;G11B27/19;G11B27/24;G11B27/30;(IPC1-7):G11B5/09 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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