Method and apparatus for shuffling a block of data

Details Method and apparatus for shuffling a block of data Method and apparatus for shuffling a block of data

G - Physics

06

F

352/19, 354/224

G06F 9/32 (2006.01) G06F 11/00 (2006.01) G11B 20/18 (2006.01) H04N 5/926 (2006.01) H04N 5/945 (2006.01) H04N 7/26 (2006.01)

Patent

CA 1174765

ABSTRACT Blocks of data, each representing ninety-six lines of a digital television signal are subjected to horizontal shuffling 3, 4 within each line and then to vertical shuffling 7, 8 within each block. The effect of the vertical shuffling is to displace sample words to different lines so that in theevent of errors occurring during recording and reproduction in a video tape recorder 11, valid sample words are available adjacent to any error sample word for the purpose of error concealment. The vertical shuffling does not interfere with vertical parity generation 10 or with the correction of errors 13,18 after reproduction using the vertical parity words.

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