System and method for restoring an optical disc signal

Details System and method for restoring an optical disc signal System and method for restoring an optical disc signal

2004-10-13

2008-12-02

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

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

Control of information signal processing channel

C369S059170

Reexamination Certificate

active

07460452

ABSTRACT:
Provided are a restoration system and method for an optical disc, by which a radio frequency signal optically picked up from an optical disc is restored. The restoration system includes a slice, a phase locked loop, a latch circuit, a 3T correction circuit, and a demodulator. In particular, the 3T correction circuit includes an extension storage device, a length measuring device, a phase detector, and an extension determiner and corrects data output from the extension storage device. In the restoration method, data required for determining the need for correction and the direction of correction is detected and a plurality of steps for selecting non-correction, two directional correction, forward correction, and backward correction are performed, thereby correcting the high radio frequency signal according to conditions of the high radio frequency signal. It is preferable that the restoration system operates according to the restoration method.

REFERENCES:
patent: 5986592 (1999-11-01), Nakagawa et al.
patent: 6104682 (2000-08-01), Konishi
patent: 6392569 (2002-05-01), Mimachi et al.
patent: 2002/0060596 (2002-05-01), Shim et al.
patent: 2003/0123362 (2003-07-01), Graffouliere

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