Optical disc player having a carriage control system relying...

Details Optical disc player having a carriage control system relying... Optical disc player having a carriage control system relying...

2006-12-05

2006-12-05

Psitos, A M (Department: 2656)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044270

Reexamination Certificate

active

07145845

ABSTRACT:
For reproducing and/or recording information from/onto an optical disc, a pickup is used to detect a target track on the disc through an optical beam. In carriage servo control, movement of the pickup is servo-controlled in the radial direction of the optical disc. In this control, a tracking error signal is produced by a preamplifier. A pulse signal is produced, in which the period of the pulse signal is set to a constant amount corresponding to the accuracy of movement of the pickup. Based on the pulse signal and the tracking error signal, a carriage control signal to move the pickup is produced. The carriage control signal is then supplied to a carriage motor by a driver, so that the pickup is moved.

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patent: 407192416 (1995-07-01), None
MAT (Machine assisted translation ) of JP 07-192416.

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