Intercrossed data correction method and error correction device

Abstract

The invention provides a staggered data correcting method and a correcting device. In processing for main data a correcting method of correcting for staggered correcting unit block, after resetting a correcting order, only all Byte locations of code string of boundary part of the main data area and a pair data area or SY area are judged if corresponding disappearing location information shows that data disappears. The disappearing location information is arranged for the location of the new gained disappearing location information. The correcting order and the disappearing location information of the same Byte location of the former code string are arranged for Byte location outside of the disappearing location information. However, when the former code string is non-correcting code string, the disappearing location information is arranged for the all Byte location of the next code string of the non-correcting code string for the correcting order, and the disappearing location information is also arranged for the posterior code string till the Byte location becoming the boundary part of the main data area and the pair data area or SY area, so as to reduce correcting time.

Description

[0001] This application is a divisional application of the patent application with the application number 03802494.2, the application date is June 2, 2003, and the invention title is "Interleaved Data Error Correction Method and Error Correction Device". technical field [0002] The invention relates to an error correction method and an error correction device, in particular to an error correction method and an error correction device for interleaved data. Background technique [0003] Conventionally, in a digital data recording / reproducing system, an error may occur in data during reproduction or recording, and the error must be detected and corrected. Reed-Solomon coding is known as an error correction code used in such error correction processing. [0004] Use below figure 1 The existing error correction method is described by taking the error correction of the data recorded on the optical medium DVD by using Reed-Solomon coding as an example. figure 1 is a diagram show...

AI Technical Summary

Problems solved by technology

[0013] As described above, in the above-mentioned first and second error correction devices, there is a problem that the error correction process requires a huge amount of time.

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