Data protection method

An error correction coding and scheme technology, which is applied to the generation of response errors, the error detection of redundant codes, and the use of forward error control, which can solve problems such as data loss.

Inactive Publication Date: 2007-05-09
格芯公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

data loss when errors cannot be corrected by rer

Method used

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Embodiment Construction

[0033] Figure 1 illustrates a system for gaining an understanding of an embodiment of the invention. The system comprises at least one storage unit 100 represented in this embodiment by a hard disk drive comprising at least one magnetic disk 101 as storage medium and a read / write head 102 . A read / write head 102 may be placed on a selected track of the at least one magnetic disk 101 . Binary data is stored on the magnetic disk 101 by selectively orienting the magnetism in selected data areas on the magnetic disk 101 using the read / write head 102 . The system also includes means 103 for reducing data loss. The at least one storage unit 100 is connected to a device 103 .

[0034]FIG. 2 shows a block diagram of the system shown in FIG. 1 . The device 103 comprises a host interface 104 for connecting to a host (e.g. a computer system), a controller 105 for controlling the at least one storage unit 100, a computing engine 106 comprising an internal memory 107 and an external mem...

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PUM

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Abstract

The invention relates to a method for reducing data loss, said method comprising a first computational step for processing given data on at least two main diagonals of a parity-check matrix representing an error-correcting coding scheme, respectively The associated data information entity (D) of the redundant set is used to calculate the intermediate result (T) of each redundant information entity (R) of the redundant set. The method also comprises a second calculation step for calculating the information content of the corresponding redundant information entity (R) from the corresponding intermediate result (T).

Description

technical field [0001] The present invention relates to a method of creating an error correction coding scheme to reduce data loss. It also relates to methods, apparatus, computer program products and computer programs for reducing data loss. It also relates to a system for protecting data stored at at least one storage unit against uncorrectable media errors. Background technique [0002] The storage unit is eg based on at least one magnetic or optical disk or solid state memory as storage medium. As the storage capacity of a single storage unit increases, the probability of encountering at least one medium-dependent error when reading data stored on at least one storage medium of the storage unit also increases. Data is lost when errors cannot be corrected by re-reading certain portions of the medium. By storing redundant data distributed to two or more storage units, the reliability of a system comprising the two or more storage units can be increased. Such a system i...

Claims

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Application Information

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IPC IPC(8): G06F11/10
CPCH04L1/004
Inventor A·多拉基亚胡晓宇I·伊利亚迪斯E·S·埃莱夫特里乌
Owner 格芯公司
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