-
公开(公告)号:EP1615157A2
公开(公告)日:2006-01-11
申请号:EP05016110.8
申请日:2001-01-23
CPC分类号: G11B5/00808 , G06K7/084 , G11B5/008 , G11B5/02 , G11B5/09 , G11B20/00007 , G11B20/10009 , G11B20/10203 , G11B20/10314 , G11B20/14 , G11B2020/1062
摘要: A data demodulation method of magnetic record data for demodulating magnetic data information made of "0" signal or "1" signal based on interval data provided by detecting a peak position in a reproduction signal of magnetic record data written to a magnetic record medium and counting the time interval between the adjacent peak positions, said data demodulation method comprising the steps of:
classifying all interval data concerning the peak positions of the reproduction signal into three categories of "0" data, "1" data, and "gray zone" data undefined as the "0" data or the "1" data;
performing smoothing processing for the categories of the "0" data and the "1" data, thereby finding two smoothed curves;
averaging the two smoothed curves, thereby finding and setting a threshold curve for classifying data into the "0" data and the "1" data; and
making binarization determination of all the interval data using the setup threshold curve.摘要翻译: 一种磁记录数据的数据解调方法,用于基于通过检测写入磁记录介质的磁记录数据的再现信号中的峰值位置而提供的间隔数据来解调由“0”信号或“1”信号组成的磁数据信息, 所述数据解调方法包括以下步骤:将关于再现信号的峰值位置的所有间隔数据分类为“0”数据,“1”数据和“灰色区域”数据三类 未定义为“0”数据或“1”数据; 对“0”数据和“1”数据的类别进行平滑处理,从而找到两条平滑曲线; 对两条平滑曲线进行平均,从而找到并设置用于将数据分类为“0”数据和“1”数据的阈值曲线; 并使用设置阈值曲线对所有区间数据进行二值化确定。
-
公开(公告)号:EP1605390A2
公开(公告)日:2005-12-14
申请号:EP05016112.4
申请日:2001-01-23
CPC分类号: G11B5/00808 , G06K7/084 , G11B5/008 , G11B5/02 , G11B5/09 , G11B20/00007 , G11B20/10009 , G11B20/10203 , G11B20/10314 , G11B20/14 , G11B2020/1062
摘要: A data demodulation method of magnetic record data for demodulating magnetic data information made up of '0' and '1' signals based on peak intervals provided by reproducing magnetic record data written to a magnetic record medium and counting the time interval between the peak positions in a reproducing signal of the magnetic record data, said, data demodulation method comprising the steps of: Normalizing a progression distribution of the peak intervals and demodulating the magnetic data information made up of '0' and '1' signals using the post-normalized peak interval progression distribution.
摘要翻译: 一种磁记录数据的数据解调方法,用于基于通过再现写入到磁记录介质的磁记录数据提供的峰值间隔来解调由'0'和'1'信号组成的磁数据信息,并且计数峰值位置之间的时间间隔 所述数据解调方法包括以下步骤:对所述峰值间隔的进展分布进行归一化,并使用所述归一化后的峰值解调由'0'和'1'信号组成的所述磁数据信息 间隔进展分布。
-
3.
公开(公告)号:EP1605389A2
公开(公告)日:2005-12-14
申请号:EP05016111.6
申请日:2001-01-23
CPC分类号: G11B5/00808 , G06K7/084 , G11B5/008 , G11B5/02 , G11B5/09 , G11B20/00007 , G11B20/10009 , G11B20/10203 , G11B20/10314 , G11B20/14 , G11B2020/1062
摘要: A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an amplifier for amplifying a magnetic signal provided by the magnetic head, a peak detection section for detecting a peak point of amplifier output from the amplifier output, a data reproduction section for reproducing digital data based on the interval between the peak points, an anomaly detection section for detecting an anomaly of the peak point interval and an output value storage section for converting the amplifier output from analog form into digital form every predetermined time and storing the provided data.
摘要翻译: 一种磁记录数据的数据解调方法,用于基于通过检测写入磁记录介质的磁记录数据的再现信号中的峰值位置提供的峰值间隔数据来解调由“0”信号或“1”信号组成的磁数据信息, 计算峰值位置之间的时间间隔,所述数据解调方法包括以下步骤:将来自模拟形式的磁记录数据的再现信号转换为数字形式,以找到数字数据的再现曲线,执行数字数据形成的积分计算 从而找到积分曲线,使用积分曲线上的最大值和最小值来找到表示积分曲线的平均值的曲线; 从积分曲线上的每个值减去平均值,从而找到平均积分曲线; 并根据平均积分曲线解调由'0'信号或'1'信号产生的磁数据。
-
-