PCM signal recording system

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format

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Details

360 191, 360 331, G11B 509

Patent

active

052608409

ABSTRACT:
A segmentation system in which, in recording a PCM audio signal on a magnetic tape or the like, a signal divided in 5 per field is divided into 4 segments per field with high capabilities of error correction and a mean value interpolation for burst errors etc. Regarding the signal of a deep-layer record PCM format, in which each subframe (3 in FIGS. 1(a)-1(c)) is formed of 30 blocks of only even data or odd data and in which data frames (4) each including 1 subframe of the even data and 1 subframe of the odd data in combination are formed in the number of 5 per frame, the even data items are arranged in the first half part of a PCM record area on the tape, and the odd data items in the latter half part. Further, each superblock (1) is constituted by 2 blocks adjacent to each other, a C2 parity (22) of 3 superblocks being an error correcting parity is extracted from 1 subframe, with every 4 of the remaining 12 superblocks forming 1 area block (2), and the 3 area blocks are located in 3 segments differing from one another. In the case where the PCM audio signal is recorded by an HD VTR or the like by utilizing the signal processing of the deep-layer record PCM format, the segmentation warrants high capabilities for mean value interpolation and error correction for burst errors etc.

REFERENCES:
patent: 4646171 (1987-02-01), Okada et al.
patent: 4685004 (1987-08-01), Takahashi et al.
patent: 4937686 (1990-01-01), Arai et al.
patent: 5068752 (1991-11-01), Tanaka et al.
patent: 5144500 (1992-09-01), Okada et al.

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