Data signal reproducing apparatus for helical scan recording

Details Data signal reproducing apparatus for helical scan recording Data signal reproducing apparatus for helical scan recording

1989-04-07

1991-04-30

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

H04N 578

Patent

active

050123610

ABSTRACT:
In an apparatus, such as a digital video tape recorder, for reproducing data signals recorded on helical scan recording tracks each having a plurality of sectors, with two adjacent tracks forming a segment and three segments forming a field, changes of sector and segment identical data are detected during reproduction, and an error signal is generated when a change in a segment occurs without a change in a sector. Either an error correction circuit or a concealing circuit receives the error signal, and is activated to perform error correction or error concealment. As a result, high quality reproduction is achieved, even in a shuttle reproduction mode.

REFERENCES:
patent: 4742519 (1988-05-01), Abe et al.
patent: 4882732 (1989-11-01), Kaminaga

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