Dynamic magnetic information storage or retrieval – Converting an analog signal to digital form for recording;...
Patent
1991-02-20
1993-11-30
Pascal, Robert J.
Dynamic magnetic information storage or retrieval
Converting an analog signal to digital form for recording;...
360 15, 360 61, 358141, G11B 500, G11B 586
Patent
active
052670945
ABSTRACT:
There are provided an error correction circuit for correcting a code error of a compressed information code train having been reproduced from a recording medium, compressed in information amount by compression encoding, and added with an error correction code, by using the error correction code, an expansion circuit for subjecting the compressed information code train outputted from the error correction circuit to decoding corresponding to the compression encoding, and expanding the information amount of the decoded code train, an error concealment circuit for concealing an information code of the information code train outputted from the expansion circuit, by using correlation of the information, the information code being unable to be corrected, and a compression circuit for compression encoding again an information code train outputted from the error concealment circuit. For an information code unable to be corrected, the information code train outputted from the compression circuit is recorded in another recording medium, whereas for the other information code, the compressed information code train to be inputted to the expansion circuit is recorded in the other recording medium. Accordingly, an information code to be subjected to information expansion and second compression processes for dubbing is limited as small as possible, thereby minimizing information deterioration to be caused by such processes.
REFERENCES:
patent: 4975866 (1990-12-01), Aoki et al.
patent: 5130864 (1992-07-01), Shimada
Canon Kabushiki Kaisha
Meyzari Ali
Pascal Robert J.
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