发明名称 |
Reproduced waveform equalization circuit |
摘要 |
Low-frequency components of a reproduced modulated signal is attenuated by an analog high-pass filter. The modulated signal with its low-frequency components attenuated is converted into a digital signal by means of an A/D converter. Then, the digital signal is directly introduced to a finite impulse response digital filter to be subjected to reproduced waveform equalization. Thereafter, the attenuation of the low-frequency components effected by the analog high-pass filter is compensated in an infinite impulse response digital filter.
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申请公布号 |
US5668746(A) |
申请公布日期 |
1997.09.16 |
申请号 |
US19940364187 |
申请日期 |
1994.12.27 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
IWAKI, TETSUO;HARADA, TOSHIAKI;YAMAWAKI, CHIAKI |
分类号 |
G11B5/035;G11B5/09;G11B20/10;H03H15/00;H03H17/00;H03H17/02;H03H21/00;H04B3/04;(IPC1-7):G06F17/10;G11B5/00 |
主分类号 |
G11B5/035 |
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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