Digital signal processing apparatus with a read error correction

Details Digital signal processing apparatus with a read error correction Digital signal processing apparatus with a read error correction

1994-02-15

1995-08-22

Sugarman, Scott J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 59, G11B 1722, H04N 576

Patent

active

054446805

ABSTRACT:
A digital signal reproducing apparatus which is capable of accurately reproducing a digital signal from a recording medium on which signals are recorded at a high density. A read signal outputted from a pickup is converted into a binary signal which is synchronized to produce a synchronized binary signal. From this synchronized binary signal, a synchronized short pulse binary signal portion is detected which has an inversion interval shorter than a predetermined period and thus may violate a run length limit. The apparatus determines whether the center position on the time base of the short pulse binary signal portion before synchronization is closer to the sampling timing existing immediately before the short pulse binary signal portion or closer to the sampling timing existing immediately after the short pulse binary signal portion. The logic of the synchronized binary signal at the sampling timing determined as being closer is inverted to correct erroneously read data.

REFERENCES:
patent: 4466089 (1984-08-01), Wachi
patent: 4685098 (1987-08-01), Yoshida
patent: 4835759 (1989-05-01), Saito et al.
patent: 4866692 (1989-09-01), Saito et al.
patent: 4914623 (1990-04-01), Hudson et al.
patent: 5293369 (1994-03-01), Melas et al.
patent: 5295128 (1994-03-01), Hutchins et al.

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