Optical disk reproducing apparatus

Details Optical disk reproducing apparatus Optical disk reproducing apparatus

2006-05-16

2006-05-16

Edun, Muhammad (Department: 2656)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044340, C369S047360, C369S053280

Reexamination Certificate

active

07046592

ABSTRACT:
When a run-away phenomenon of an optical disk occurs, a control circuit detects a rotational direction of the optical disk that runs away by comparing an initial track count value and a braking time track count value. The initial track count value is a value calculated by counting track pulses corresponding to a tracking error signal for a predetermined time when a tracking servo is turned off. The braking time track count value is a value calculated by counting the track pulses corresponding to the tracking error signal for a predetermined time, when a brake pulse is applied to the spindle motor.

REFERENCES:
patent: 7-032740 (1995-06-01), None
patent: 2000-125588 (2000-04-01), None
patent: 2001-078483 (2001-03-01), None

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