Apparatus for reproducing data from a regenerative signal using

Details Apparatus for reproducing data from a regenerative signal using Apparatus for reproducing data from a regenerative signal using

1992-08-31

1995-09-05

Psitos, Aristotelis

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 48, 369124, 369 4432, 375250, G11B 700

Patent

active

054485436

ABSTRACT:
A PLL circuit produces a synchronous signal by utilizing a regenerative clock signal in a VFO portion in a regenerative signal which was read out from a recording medium in sections. When a defective portion is present in a regenerative clock signal, the same sector is read out again from the recording medium to obtain the regenerative signal. A loop gain of the PLL circuit is made to be low in the defective portion of the regenerative signal which was read out again, thereby to prevent the synchronous fault of the PLL circuit due to the defective portion.

REFERENCES:
patent: 4974221 (1990-11-01), Hosoya et al.
patent: 5065384 (1991-11-01), Yokogawa
patent: 5088080 (1992-02-01), Ishibashi et al.
patent: 5172357 (1992-12-01), Taguchi

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