H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/40, 350/48
H04N 5/21 (2006.01) G06F 11/10 (2006.01) G11B 20/18 (2006.01) H03M 13/09 (2006.01) H04N 5/38 (2006.01) H04N 5/926 (2006.01) H04N 5/945 (2006.01)
Patent
CA 1172748
ABSTRACT OF THE DISCLOSURE An error-correction format for transmitting digital television signals comprises segments of data, which segments may for example represent 48 successive horizontal lines of a television field. The segment comprises, for example, data groups n to n+23 and a final group n+24 which forms a vertical parity check group. Each of the data groups n to n+23 comprises m blocks, and each block comprises a synchronization and address sub-block followed by s data sub-blocks, each data sub-block being followed by respective inner code protection bits for providing error protection for the immediately preceding data sub-block, and finally followed by a cyclic redundancy check code for providing error protection for the s data sub-blocks in the block. The vertical parity group n+24 is just the same in format as the other groups n to n+23, but each sub-block thereof is made up vertical parity check words which form an outer error correcting code in place of data words.
398507
Gowling Lafleur Henderson Llp
Sony Corporation
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