RS decoder syndrome generator sharing circuit for inner code and sub code in digital VLC system

摘要

1. TECHNICAL FIELD OF THE INVENTION;An RS decoder syndrome generator sharing circuit of inner code and sub code in a digital VCR system.;2. The technical problem to be solved by the invention;Provided is a circuit for sharing a syndrome generator in error correction of an inner code or a sieve code in error correction of a received data in a digital VCR or a digital camcorder.;3. Summary of Solution to Invention;In the digital VLC system, the inner decoder and subcode RS decoder syndrome generator sharing circuit generates a syndrome S0 by using the following calculation equation with α = 1 value at the time of subcode and intercode with the received data as input. when the sub-code as input means, and the received data, the selection of α ^1, α ^2, α ³ value of GF (2 ^4), and α ^1, α ^2, α ³ of, the GF (2 ⁸⁾ when the inner code A second means for generating syndromes S1 to S3 by selecting the multiplied value and using the following formula and inputting the received data to the α ¹ , α ² , α ³ value of GF (2 ⁸ ) only at inner code. A third means for generating syndrome S4-S7 is constructed using the following calculation formula.;Where 5, = syndrome (j = ^{0 to2t-1} ), r (x): reception data (x = α ^{0 to} α ^2t-1 );4. Important uses of the invention;Used in error correction techniques in digital VCRs or digital camcorders.;※ Selectivity: 1st, 2nd, 3rd degree