公开(公告)号：US3668631A

公开(公告)日：1972-06-06

申请号：US3668631D

申请日：1969-02-13

Applicant: IBM

Inventor： GRIFFITH ROBERT L ,  OLDHAM IRA B

IPC: G06F11/10 ,  G06F11/00

CPC classification number: G06F11/1012

Abstract: A statistically optimized data recovery apparatus in a system having data storage and retrieval means, said apparatus including error detection means, a plurality of error correction means, first schedulers for scheduling a plurality of error correction attempts, and a second scheduler and a parameter variation means, said second scheduler providing for ordered selection of the first scheduler, and said parameter variation means providing for variation of parameters of said retrieval means, in an attempt to recover data in error.

Abstract translation: 一种具有数据存储和检索装置的系统中的统计优化的数据恢复装置，所述装置包括错误检测装置，多个纠错装置，用于调度多个纠错尝试的第一调度器，以及第二调度器和参数变化装置 所述第二调度器提供对第一调度器的有序选择，并且所述参数变化装置提供所述检索装置的参数的变化，以试图恢复错误的数据。

公开(公告)号：US3480919A

公开(公告)日：1969-11-25

申请号：US3480919D

申请日：1965-11-22

Applicant: IBM

Inventor： JENSEN ROY A ,  OLDHAM IRA B

IPC: G06K11/02 ,  G11B7/0033 ,  G11B7/085 ,  G11B21/08 ,  G11C13/04 ,  G11B7/00 ,  G11B9/00

CPC classification number: G11C13/04 ,  G06K11/02 ,  G11B7/0033 ,  G11B7/085 ,  G11B21/088

公开(公告)号：US3668632A

公开(公告)日：1972-06-06

申请号：US3668632D

申请日：1969-02-13

Applicant: IBM

Inventor： OLDHAM IRA B

IPC: G06F11/10 ,  H04L1/10

CPC classification number: G06F11/1076 ,  G06F11/1008

Abstract: Apparatus for detecting and correcting errors in a digital computer storage system is disclosed. Data is encoded using a generalized Reed-Solomon encoder. Error detection circuitry including power sum calculating devices are used for detection of data in error. The error correction portion of the invention includes an improved decoding scheme for determining the location and magnitudes of errors within the data and has a very low average correction time. Means are provided for determining the starting area of a data block in the presence of errors in the starting area. Further means are provided for detecting a cyclic shift in a data character which, under normal conditions, would appear as an acceptable code word even though in error.

Abstract translation: 公开了一种用于检测和校正数字计算机存储系统中的错误的装置。 使用广义Reed-Solomon编码器对数据进行编码。 包括功率和计算装置的误差检测电路用于检测错误的数据。 本发明的纠错部分包括用于确定数据内的误差的位置和幅度的改进的解码方案，并且具有非常低的平均校正时间。 提供用于在起始区域中存在错误的情况下确定数据块的起始区域的装置。 提供了用于检测数据字符中的循环移位的其它装置，其在正常条件下即使出现错误也将显示为可接受的代码字。