Track calculation method for fixing track jumps of optical...

Details Track calculation method for fixing track jumps of optical... Track calculation method for fixing track jumps of optical...

2008-03-28

2009-11-17

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S030150

Reexamination Certificate

active

07619952

ABSTRACT:
An appropriate track calculation equation is inducted according to a relationship between a storage area and a track pitch of a compact disc, and a pickup unit is instantly shifted to a location calculated with the track calculation equation. Therefore, an error after performing a track jump modulation is reduced to a smallest degree, and in other words, the pickup unit may access a location on the disc currently required by a user without frequent or time-consuming long seeks. As a result, when the pickup unit accesses compact discs having unknown formats, which indicate different capacities or properties, a track error may be calculated in a shortest time so as to shift the pickup unit accordingly and to fix track jumps, and the user may browse any location on the compact discs having unknown formats smoothly.

REFERENCES:
patent: 5875161 (1999-02-01), Takegawa

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