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1. 发明授权

US4680653A Rotating storage device track format emulation 失效
标题翻译：旋转存储设备轨道格式仿真
公开(公告)号：US4680653A
公开(公告)日：1987-07-14
申请号：US866632
申请日：1986-05-22
申请人： Chan Y. Ng , Norman K. Ouchi , David T. Wang , Wellington C. Yu
发明人： Chan Y. Ng , Norman K. Ouchi , David T. Wang , Wellington C. Yu
IPC分类号： G11B20/12 , G11B27/30 , G11B5/012
CPC分类号： G11B27/3027 , G11B20/1262 , G11B2020/1087 , G11B2020/10879 , G11B2020/1257
摘要： Disclosed is a method for recording a record that emulates a first recording format, which includes a track reference point, such as an index field, used for determining a position of a record on a track according to the first recording format, on a moving storage device operating according to a second recording format which also includes a track reference point. The invention comprises the steps, responsive to location information generated according to the first recording formats, of:(1) determining an original angular position of a record according to the first recording format;(2) calculating in response to the original angular position and a parameter a preferred angular position for the record according to the second recording format;(3) determining an actual angular position of the record recorded according to the second recording format; and(4) recording an extension of the record to compensate for the difference between the preferred angular position and the actual angular position.
摘要翻译：公开了一种用于记录模拟第一记录格式的记录的方法，其包括用于根据第一记录格式在轨道上确定记录的位置的诸如索引字段的轨道参考点在移动存储器设备根据还包括轨道参考点的第二记录格式进行操作。本发明包括响应于根据第一记录格式生成的位置信息的步骤：（1）根据第一记录格式确定记录的原始角位置; （2）响应于原始角位置计算和根据第二记录格式的用于记录的优选角位置的参数; （3）确定根据第二记录格式记录的记录的实际角位置; 和（4）记录记录的延伸部以补偿优选角位置与实际角位置之间的差。

2. 发明授权

US5487077A Location dependent variable error correction processing for multi-track recording media using variable length coding means 失效
标题翻译：使用可变长度编码装置的多轨记录介质的位置相关变量纠错处理
公开(公告)号：US5487077A
公开(公告)日：1996-01-23
申请号：US247446
申请日：1994-05-23
申请人： Martin A. Hassner , Luke C. K. Lang , Norman K. Ouchi , Uwe Schwiegelshohn
发明人： Martin A. Hassner , Luke C. K. Lang , Norman K. Ouchi , Uwe Schwiegelshohn
IPC分类号： G11B20/12 , G11B20/18 , H03M13/35 , G06F11/10
CPC分类号： H03M13/35 , G11B20/1833 , G11B20/1258
摘要： The error correction code capability of the linear recording density of a zone of contiguous recording tracks on a surface or volume having at lest two zones of different average linear recording density is adjusted. Each zone has associated therewith a parameter pair (r,R) defining the number of error correction bytes r to be appended to data blocks to form a codeword written to tracks within the zone and the number R.ltoreq.(r/2-1) of correctable errors in the event of a non-zero remainder detected upon readback of a codeword from a track within the zone. The r parameter controls the length of a shift register type encoder syndrome generator.
摘要翻译：在具有不同平均线性记录密度的两个区域的表面或体积上的连续记录轨迹区域的线性记录密度的纠错码能力被调整。每个区域具有与其相关联的参数对（r，R），其定义要附加到数据块的纠错字节数r，以形成写入该区域内的轨道的码字，并且数量R（r / 2-1 ）在从区域内的轨道读取码字时检测到非零余数的情况下的可校正错误。 r参数控制移位寄存器型编码器校正发生器的长度。

3. 发明授权

US5644791A System for storing pointers to initial sectors of variable length n units and storing second pointers within the initial sector of the n unit 失效
标题翻译：用于存储指向可变长度n个单元的初始扇区的指针并将第二指针存储在n单元的初始扇区内的系统
公开(公告)号：US5644791A
公开(公告)日：1997-07-01
申请号：US241982
申请日：1994-05-11
申请人： James T. Brady , Joe-Ming Cheng , Oded Cohn , James W. Eldridge , Yoram Novick , Norman K. Ouchi , Danit Segev
发明人： James T. Brady , Joe-Ming Cheng , Oded Cohn , James W. Eldridge , Yoram Novick , Norman K. Ouchi , Danit Segev
IPC分类号： H04N13/04 , G02B27/22 , G06F3/06 , G09G3/02 , G11B20/00 , H04N13/00 , G06F13/00
CPC分类号： G11B20/00007 , G02B27/2271 , H04N13/0422 , H04N13/0488 , H04N13/0497 , H04N13/0203 , H04N13/0434 , H04N13/0438 , H04N13/0459
摘要： A method for operating a data storage system that is comprised of at least one disk. The method includes a step of partitioning a data compression unit into n basic compression units, where n is greater than one. Each data compression unit is comprised of a plurality of disk sectors and each of n basic compression units begins with a different initial sector. A next step partitions the data compression unit into X intervals, where X is less than n. Each of the X intervals begins with a different initial sector and within one of the n basic compression units. Further steps of the method include storing, external to the at least one disk, a plurality of first pointers each of which points to the initial sector of one of the n basic compression units wherein the 1/X, 2/X, . . . , (X-1)/X intervals begin; storing, within each of the initial sectors of the individual ones of the n basic compression units wherein the 1/X, 2/X, . . . , (X-1)/X intervals begin, a second pointer to the initial sector of the interval that begins within the basic compression unit; and, in response to a disk read operation that reads a compressed data unit that begins with one of the sectors that is located within one of the X intervals, accessing the beginning sector of the compressed data unit in accordance with one of the first pointers and one of the second pointers. The step of allocating includes a step of determining an actual compression ratio for the record, determining a value of a longest run of identical characters within the record, and adjusting the actual compression ratio based on the value of the longest run of identical characters. The step of allocating also includes a step of adding at least one additional sector to the estimated number to enable the compressed record to be subsequently updated in place.
摘要翻译：一种用于操作由至少一个盘组成的数据存储系统的方法。该方法包括将数据压缩单元划分成n个大于1的基本压缩单元的步骤。每个数据压缩单元由多个磁盘扇区组成，并且n个基本压缩单元中的每一个以不同的初始扇区开始。下一步将数据压缩单元分成X个间隔，其中X小于n。 X间隔中的每一个以不同的初始扇区和n个基本压缩单元之一开始。该方法的另外的步骤包括在至少一个盘的外部存储多个第一指针，每个第一指针指向n个基本压缩单元之一的初始扇区，其中1 / X，2 / X，...。。。，（X-1）/ X间隔开始; 存储在其中1 / X，2 / X，...的n个基本压缩单元中的各个初始扇区的每个初始扇区内。。。，（X-1）/ X间隔开始，指向在基本压缩单元内开始的间隔的初始扇区的第二指针; 并且响应于读取从位于所述X个间隔之一内的扇区之一开始的压缩数据单元的磁盘读取操作，根据所述第一指针和/或所述第一指针之一访问所述压缩数据单元的开始扇区第二个指针之一。分配步骤包括确定记录的实际压缩比的步骤，确定记录内相同字符的最长行程的值，并且基于相同字符的最长行程的值来调整实际压缩比。分配步骤还包括将至少一个附加扇区添加到估计的数目以使压缩记录随后能够更新的步骤。

4. 发明授权

US5442638A Apparatus and method for recording over defects in storage media 失效
标题翻译：用于记录存储介质中的缺陷的装置和方法
公开(公告)号：US5442638A
公开(公告)日：1995-08-15
申请号：US179405
申请日：1994-01-10
申请人： Joseph C. Awad , James W. Eldridge , David G. Foote , Norman K. Ouchi
发明人： Joseph C. Awad , James W. Eldridge , David G. Foote , Norman K. Ouchi
IPC分类号： G11B19/04 , G11B20/18 , G06F11/00 , G06F11/10 , G11B7/00 , G11B27/36
CPC分类号： G11B20/1883 , G11B19/04 , G11B20/18 , G11B2220/20
摘要： Storage media defect areas that are too large to be managed by ECC processing alone and sufficiently small that read/write head clock synchronization can be maintained over the defect area, are managed by a fill pattern recording scheme in which an offset register indicates the beginning of a defect area and a fill pattern is recorded over the defect area while ECC processing is halted. Data recording is resumed after the defect area is passed. In this way, the number of times sector skipping must be used for a storage media is reduced, thereby making more efficient use of the storage media surface area.
摘要翻译：存储介质缺陷区域太大，不能通过ECC处理单独管理并且足够小，可以在缺陷区域上维持读/写头时钟同步，由填充模式记录方案管理，其中偏移寄存器指示开始在ECC处理停止时，在缺陷区域上记录缺陷区域和填充图案。缺陷区域通过后恢复数据记录。以这种方式，减少了必须用于存储介质的扇区跳过次数，从而更有效地使用存储介质表面区域。

5. 发明授权

US5617432A Common error protection code for data stored as a composite of different data formats 失效
标题翻译：存储为不同数据格式的组合的数据的常见错误保护代码
公开(公告)号：US5617432A
公开(公告)日：1997-04-01
申请号：US585002
申请日：1996-01-05
申请人： John S. Eggenberger , Paul Hodges , Norman K. Ouchi , David A. Plomgren
发明人： John S. Eggenberger , Paul Hodges , Norman K. Ouchi , David A. Plomgren
IPC分类号： G06F11/10 , H03M13/09 , G06F11/08
CPC分类号： H03M13/091 , G06F11/10
摘要： A data processing system and method providing error protection for data transmitted between a processor and a buffer in one data format and transmitted between the buffer and a user device in a different data format. An adaptor is interposed between the processor and the buffer for transmitting to the buffer (i) successive data segments in the one data format, each ending with appended check bytes in a preselected cyclic redundancy code (CRC); and (ii) check bytes using the same CRC appended at the end of each segment in the different data format to create in the buffer records which are a composite of both formats, but viewed as in the one data format by the processor and as in the different data format by the user device. The boundaries of the segments in each format must be known to the adaptor. Since both formats use the same CRC, CRC bytes for each segment in each data format will provide an identical preselected value in the absence of a detectable error. A second adaptor, which does not and need not know the boundaries of the data segments in the one data format, is interposed between the buffer and the user device for transmitting the data between the buffer and user device in the different data format.
摘要翻译：一种数据处理系统和方法，用于以一种数据格式在处理器和缓冲器之间传输的数据提供错误保护，并以不同的数据格式在缓冲器和用户设备之间传输。在处理器和缓冲器之间插入适配器，用于向缓冲器发送（i）一个数据格式的连续数据段，每个以预先选择的循环冗余码（CRC）中的附加校验字节结尾; 和（ii）使用不同数据格式在每个段末尾附加相同的CRC来校验字节，以在缓冲器记录中创建两个格式的复合，但是被处理器视为一种数据格式，并且如用户设备的不同数据格式。适配器必须知道每种格式的段的边界。由于两种格式都使用相同的CRC，所以每种数据格式的每个段的CRC字节将在不存在可检测到的错误的情况下提供相同的预选值。第二适配器不需要且不需要知道一种数据格式的数据段的边界，被插入缓冲器和用户设备之间，用于以不同的数据格式在缓冲器和用户设备之间传送数据。

6. 发明授权

US5333143A Method and means for b-adjacent coding and rebuilding data from up to two unavailable DASDS in a DASD array 失效
标题翻译：用于b相邻编码和重构DASD阵列中最多两个不可用DASDS的数据的方法和方法
公开(公告)号：US5333143A
公开(公告)日：1994-07-26
申请号：US751950
申请日：1991-08-29
申请人： Miguel M. Blaum , Norman K. Ouchi
发明人： Miguel M. Blaum , Norman K. Ouchi
IPC分类号： G06F3/06 , G06F11/10 , G06F7/22
CPC分类号： G06F11/1076 , G06F11/1008
摘要： B-Adjacent coding is used to correct up to two DASDs in error in an array of N data DASDs and two redundant DASDs. When two of the data DASDs fail, their data can be recreated as a function of a pair of syndromes constituting up to two Boolean equations in two unknowns. Prestoring of the matrices of the powers of the polynomial terms of the code primitive together with pipeline processing operate to expedite data recovery and balance the write operations load on the DASDs across the array. Recovery from the failure of a data and a redundant DASD involves resolving one linear Boolean equation with one unknown.
摘要翻译： B相邻的编码用于在N数据DASD和两个冗余DASD数组中纠正多达两个DASD错误。当数据DASD中的两个失败时，它们的数据可以被重新构建为两个不等式中构成两个布尔方程的一对综合征的函数。预处理代码原语的多项式的幂的矩阵以及流水线处理可以加速数据恢复并平衡数组上的DASD上的写入操作负载。从数据和冗余DASD的故障中恢复涉及到解决具有一个未知数的一个线性布尔方程。

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