Method and apparatus for error correction

Details Method and apparatus for error correction Method and apparatus for error correction

G - Physics

11

B

354/223

G11B 5/09 (2006.01) G11B 7/00 (2006.01) G11B 20/18 (2006.01) G11B 27/30 (2006.01) G11B 27/34 (2006.01) H03M 13/29 (2006.01)

Patent

CA 1196106

TITLE OF THE INVENTION "METHOD AND APPARATUS FOR ERROR CORRECTION" ABSTRACT OF THE DISCLOSURE A method of error correction comprises error correction coding processing and interleaving and de-interleaving proces- sings for digital subcoding data (as opposed to main data) in subchannels (as opposed to the main channel) to be transmitted. Apparatus is provided comprising means for performing those processings. The method for error comprises the steps of dividing digital subcoding data in one PACKET into a plurality of PACKs; adding a first redundant code for error detection or error correction to each of the PACKs; and interleaving the digital subcoding data in each of the PACKs and the first redundant code; whereby the interleaved data is transmitted together with frame sync signals and main data. The data in the subchannels is coded and interleaved and then recorded so that the distances between the data are maximized. Therefore, if errors should occur, the interpolation can be properly done, thereby improving the error correcting ability without requiring complicated error correction circuit or large buffer memory such as those required for the data in the main channel.

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