Method and apparatus for focus control of lens for reading...

Details Method and apparatus for focus control of lens for reading... Method and apparatus for focus control of lens for reading...

2006-06-13

2006-06-13

Patel, Gautam R. (Department: 2656)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S053280

Reexamination Certificate

active

07061835

ABSTRACT:
A pull-in point setting circuit16sets the intermediate value between the maximum value and minimum value of the focus error signal of a layer1as the pull-in point of a focus servo action in advance of the playback of an optical disk11. At a layer jump before the automatic adjustment of a focus bias, the focus servo action is pulled in at the set point. Thus, the layer jump can be reliably effected even before the adjustment of the focus bias.

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River Stone Networks Inc.; http://www.riverstonenet.com/pdf/tls—pres.pdf MPLS based Transparent LAN services. Copyright 2001, no date.

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