Method and device for playing optical discs and method for...

Details Method and device for playing optical discs and method for... Method and device for playing optical discs and method for...

2004-08-23

2009-02-17

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044320

Reexamination Certificate

active

07492677

ABSTRACT:
A method for reading data from a track (3) of a data carrier (2) comprises the following steps. During reading, a tracking quality parameter (Q) is determined, relating to a track portion (3Px) of the data carrier from which the data is being read. The tracking quality parameter is stored in a tracking performance memory (30) in relation to the corresponding track portion (3Px). If a jump back to a previously read track portion appears to be necessary, said tracking performance memory (30) is consulted to determine a target track portion (3P(x-n)) having a sufficient value of the tracking quality parameter (Q); then, a jump back (JB) to the target track portion (3P(x-n)) thus determined is performed.

REFERENCES:
patent: 5450388 (1995-09-01), Baas

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