Method and apparatus for recording and/or reproducing digital da

Details Method and apparatus for recording and/or reproducing digital da Method and apparatus for recording and/or reproducing digital da

1987-11-03

1989-11-21

Pellinen, A. D.

Excavating

360 381, 360 53, 371 401, G06F 1110

Patent

active

048827320

ABSTRACT:
In apparatus for recording and/or reproducing digital data, digital data such as video data is encoded with error correction codes including outer codes and inner codes so that respective predetermined numbers of symbols form respective blocks to be added with synchronizing data and so on, then recorded with rotary heads on slant tracks of a tape medium such as a magnetic tape. The redundancy symbols of the outer error correction code followed by the information data and inner error correction code are recorded at the beginning of each track, so that even if the data reproduced from the beginning portion of the tape contains error, the information data is not much influenced by that error.

REFERENCES:
patent: 4211997 (1980-07-01), Rudnick et al.
patent: 4282551 (1981-08-01), Kanazawa et al.
patent: 4375101 (1983-02-01), Cerracchio
patent: 4398292 (1983-08-01), Doi et al.
patent: 4637023 (1987-01-01), Lounsbury et al.
patent: 4680763 (1987-07-01), Suma et al.
patent: 4726028 (1988-02-01), Himeno

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