发明授权
- 专利标题： Digital signal detection circuit
- 专利标题（中）： 数字信号检测电路
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申请号： US689130申请日： 1996-07-30
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公开(公告)号： US5661709A公开(公告)日： 1997-08-26
- 发明人: Genzo Takagi , Yoshihiro Noguchi , Eizo Katayama , Mitsuhiro Araki , Yoshinori Takahashi
- 申请人： Genzo Takagi , Yoshihiro Noguchi , Eizo Katayama , Mitsuhiro Araki , Yoshinori Takahashi
- 申请人地址： JPX Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX5-079748 19930406
- 主分类号： G11B20/10
- IPC分类号： G11B20/10 ; G11B7/005 ; G11B20/18 ; G11B7/00
摘要：
A digital signal detection circuit includes a threshold value calculator calculating a threshold value from assumptive sampled values corresponding to various data patterns of a regenerated signal. The regenerated signal is obtained by regenerating data recorded on a recording medium by a regenerating head. The detection circuit also includes a Viterbi decoder carrying out Viterbi decoding of the regenerated signal with the threshold value determined by the threshold value calculator as a constant. The threshold value calculator variably controls the threshold value using a decoded output of the Viterbi decoder and a regenerated signal corresponding to the decoded output of the Viterbi decoder.
公开/授权文献
- US5214825A Paper clip with multiple panels 公开/授权日：1993-06-01
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