发明授权
- 专利标题： Reproduced waveform equalization circuit
- 专利标题（中）： 复制波形均衡电路
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申请号： US364187申请日： 1994-12-27
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公开(公告)号： US5668746A公开(公告)日： 1997-09-16
- 发明人: Tetsuo Iwaki , Toshiaki Harada , Chiaki Yamawaki
- 申请人： Tetsuo Iwaki , Toshiaki Harada , Chiaki Yamawaki
- 申请人地址： JPX Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX5-330448 19931227
- 主分类号： G11B5/035
- IPC分类号： G11B5/035 ; G11B5/09 ; G11B20/10 ; H03H15/00 ; H03H17/00 ; H03H17/02 ; H03H21/00 ; H04B3/04 ; G06F17/10 ; G11B5/00
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.
公开/授权文献
- USD321657S Clock 公开/授权日：1991-11-19
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