公开(公告)号：US5287228A

公开(公告)日：1994-02-15

申请号：US738627

申请日：1991-07-31

申请人： Hideki Sawaguchi ,  Yasuhide Ouchi ,  Hajime Aoi

发明人： Hideki Sawaguchi ,  Yasuhide Ouchi ,  Hajime Aoi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  G11B5/02

CPC分类号： G11B20/10212 ,  G11B20/1423 ,  G11B20/1426 ,  G11B5/09

摘要： The time interval/amplitude level difference between sequential peaks in waveforms of first reproducing signals from a recording medium is detected and stored in a storage. The time interval/amplitude level difference between peaks in a waveform of a second reproducing signal from the recording medium is detected and compared with the time interval/amplitude level difference stored in the storage to thereby perform peak detection in the waveforms thereof. An original bit train of the first reproducing signal corresponding to a maximum-likelihood waveform selected among the waveforms of the first reproducing signals is given as a standardized signal. Data are provided to represent the time interval/amplitude level difference between the sequential peaks in the waveforms of the reproducing signals in a range of electromagnetic signal interference on the recording medium.

摘要翻译： 来自记录介质的第一再现信号的波形中的连续峰值之间的时间间隔/振幅电平差被检测并存储在存储器中。 检测来自记录介质的第二再现信号的波形中的峰值之间的时间间隔/振幅电平差，并将其与存储在存储器中的时间间隔/振幅电平差进行比较，从而在其波形中进行峰值检测。 将与第一再现信号的波形中选择的最大似然波形对应的第一重放信号的原始比特串作为标准化信号。 提供数据以表示记录介质上的电磁信号干扰范围内的再现信号的波形中的顺序峰值之间的时间间隔/幅度电平差。