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公开(公告)号：EP1372151A3
公开(公告)日：2004-04-14
申请号：EP03008682.1
申请日：2003-04-16
摘要： Methods are provided for overwriting data in a probe-based data storage device (1) wherein data is represented by the presence and absence of pits formed in a storage surface (4) by a probe of the device. Input data is first coded such that successive bits of a first value in the coded input data are separated by at least one bit of the other value. Overwrite data bits ν 0 ,ν 1 ,ν 2 ,..., are generated from the coded input data bits b 0 , b 1 , b 2 , ..., and the overwrite data bits ν 0 , ν 1 , ν 2 ,..., are then used to overwrite data on the storage surface (4). According to a first method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then ν i = b i -1 for i ≥ 1 and ν 0 has said first value, and if a pit represents a bit of said other value in the data storage device (1) then ν i = b i- 1 for i ≥ 1 and ν 0 has said other value. According to a second method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then ν i = b i- 1 ( b i -2 + b i ) for i ≥ 2, ν 0 has said first value and ν 1 = b 0 , and if a pit represents a bit of said other value in the data storage device (1) then ν i =( b i -1 ( b i -2 + b i )) for i ≥ 2, ν 0 has said other value and ν 1 = b 0 . With both methods, the result of the overwrite operation is to record either the coded input data b 0 , b 1 , b 2 ,..., or its complement b 0 , b 1 , b 2 ,..., depending on whether a pit represents a bit having the first value or a bit having the other value. This result is independent of the bit values of the data which is overwritten.≥
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公开(公告)号：EP1372151B1
公开(公告)日：2005-07-13
申请号：EP03008682.1
申请日：2003-04-16
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3.发明公开Data overwriting in probe-based data storage devices 有权Überschreibenvon Daten在Sonden-Datenspeichervorrichtungen
公开(公告)号：EP1372151A2
公开(公告)日：2003-12-17
申请号：EP03008682.1
申请日：2003-04-16
摘要： Methods are provided for overwriting data in a probe-based data storage device (1) wherein data is represented by the presence and absence of pits formed in a storage surface (4) by a probe of the device. Input data is first coded such that successive bits of a first value in the coded input data are separated by at least one bit of the other value. Overwrite data bits ν 0 ,ν 1 ,ν 2 ,..., are generated from the coded input data bits b 0 , b 1 , b 2 , ..., and the overwrite data bits ν 0 , ν 1 , ν 2 ,..., are then used to overwrite data on the storage surface (4). According to a first method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then ν i = b ¯ i -1 for i ≥ 1 and ν 0 has said first value, and if a pit represents a bit of said other value in the data storage device (1) then ν i = b i- 1 for i ≥ 1 and ν 0 has said other value. According to a second method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then ν i = b ¯ i- 1 ( b ¯ i -2 + b i ) for i ≥ 2, ν 0 has said first value and ν 1 = b ¯ 0 , and if a pit represents a bit of said other value in the data storage device (1) then ν i =( b ¯ i -1 ( b ¯ i -2 + b i )) for i ≥ 2, ν 0 has said other value and ν 1 = b 0 . With both methods, the result of the overwrite operation is to record either the coded input data b 0 , b 1 , b 2 ,..., or its complement b ¯ 0 , b ¯ 1 , b ¯ 2 ,..., depending on whether a pit represents a bit having the first value or a bit having the other value. This result is independent of the bit values of the data which is overwritten.≥
摘要翻译： 提供了用于覆盖基于探针的数据存储设备（1）中的数据的方法，其中数据由存储表面（4）中存在和不存在由设备的探针形成的凹坑表示。 首先对输入数据进行编码，使得编码输入数据中的第一值的连续位被另一个值的至少一位分隔。 从编码输入数据位b0，b1，b2，...和覆盖数据位nu 0，nu 1，nu 2，...生成覆盖数据位nu 0，nu 1，nu 2，...。 然后用于覆盖存储表面（4）上的数据。 根据第一种方法，生成覆盖数据位，使得如果凹坑表示数据存储设备（1）中的所述第一值的位，则对于i≥1，nu i = bi-1，并且nu 0具有所述第一 值，并且如果凹坑表示数据存储装置（1）中的所述其他值的位，则对于i≥1，nu i = bi-1，并且nu 0具有所述其他值。 根据第二种方法，生成重写数据位，使得如果凹坑表示数据存储装置（1）中的所述第一值的位，则nu i = bi-1（bi-2 + bi），对于i≥ 如图2所示，nu 0具有第一值和nu 1 = b0，并且如果凹坑表示数据存储设备（1）中的所述其他值的位，则nu i =（bi-1（bi-2 + bi））， i≥2，nu 0表示其他值，nu 1 = b0。 使用这两种方法，重写操作的结果是记录编码输入数据b0，b1，b2，...或其补码b0，b1，b2，...，这取决于凹坑是否表示具有 第一个值或一个具有另一个值的位。 该结果与覆盖的数据的位值无关.≥
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