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公开(公告)号：US5694064A
公开(公告)日：1997-12-02
申请号：US520447
申请日：1995-08-29
CPC分类号： G11B20/10009
摘要： A playback signal is supplied to a delay amplifier and a noise comparator. The delayed playback signal is supplied to a comparator, which compares the delayed playback signal with the playback signal and provides a first comparison signal to a pulse adjustment circuit. The noise comparator compares the playback signal with threshold signals and provides a second comparison signal to the pulse adjustment circuit. The pulse adjustment circuit generates the peak detection signal at each point when the signal level of the first comparison is inverted, and determines the peak detection signal to be invalid when the signal level of the playback signal falls within the range between the threshold signals. A read signal is generated based on the valid peak detection signal.
摘要翻译： 回放信号被提供给延迟放大器和噪声比较器。 延迟重放信号被提供给比较器，比较延迟重放信号与重放信号，并向脉冲调节电路提供第一比较信号。 噪声比较器将回放信号与阈值信号进行比较，并向脉冲调整电路提供第二比较信号。 当第一比较的信号电平反相时，脉冲调整电路在每个点产生峰值检测信号，并且当重放信号的信号电平落在阈值信号之间的范围内时，确定峰值检测信号无效。 基于有效峰值检测信号生成读取信号。
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2.发明授权公开(公告)号：US06633443B1
公开(公告)日：2003-10-14
申请号：US08521115
申请日：1995-08-29
IPC分类号： G11B509
CPC分类号： G11B20/10212 , G11B20/1423
摘要： A peak detection circuit receives a playback signal from a magnetic storage medium and generates a peak detection signal. A shift register transmits the peak detection signal, and a pattern detection circuit is responsive to signals from the shift register to detect a first predetermined temporal pattern of peaks in the peak detection signal. A pattern correction circuit adjusts the relative timing of peaks in the peak detection signal so that the first predetermined temporal pattern of peaks in the peak detection signal is converted to a second predetermined temporal pattern of peaks in a corrected peak detection signal.
摘要翻译： 峰值检测电路从磁存储介质接收重放信号并产生峰值检测信号。 移位寄存器发送峰值检测信号，并且模式检测电路响应于来自移位寄存器的信号，以检测峰值检测信号中的峰值的第一预定时间模式。 图案校正电路调整峰值检测信号中的峰值的相对定时，使得峰值检测信号中的峰值的第一预定时间图案被转换为校正峰值检测信号中的峰值的第二预定时间图案。
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