Information-reproducing apparatus equipped with PLL circuit

Details Information-reproducing apparatus equipped with PLL circuit Information-reproducing apparatus equipped with PLL circuit

2003-02-25

2008-12-02

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S053340, C369S059220, C369S044250, C369S044320, C369S047180, C369S059120

Reexamination Certificate

active

07460451

ABSTRACT:
The present invention provides highly reliable PLL without influence of variations in amplitude of a reproduced signal or variations in inclination of an edge. An information-reproducing apparatus according to the present invention includes a unit for detecting a phase difference between a reproduced signal and a reproducing clock signal, a PLL circuit for regulating a frequency of the reproducing clock signal to compensate for the detected phase difference, a unit for detecting a state of the PLL circuit, and a unit for regulating a loop gain of the PLL circuit corresponding to the detected state.

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