Method and apparatus for long seeking control of pickup head

Details Method and apparatus for long seeking control of pickup head Method and apparatus for long seeking control of pickup head

2006-09-12

2006-09-12

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S030170, C369S053100, C369S124010

Reexamination Certificate

active

07106670

ABSTRACT:
A method for long seeking control of an optical read/write head is disclosed. The optical read/write head includes a sled moved by a sled motor, and a lens mounted on the sled and moved by a lens actuator, and said method includes steps of determining a velocity profile according to a desired travel distance of the optical read/write head; detecting an instant velocity and an instantaneous position of the optical read/write head at a certain time spot; comparing the instant velocity with a target velocity corresponding to the instantaneous position according to the velocity profile; modifying velocities of the sled and the lens according to the comparing result; and dynamically adjusting a position of the lens in the sled. An apparatus for long seeking control of an optical read/write head is also disclosed.

REFERENCES:
patent: 6781929 (2004-08-01), Kadlec

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