Method and apparatus for determining position of optical...

Details Method and apparatus for determining position of optical... Method and apparatus for determining position of optical...

2007-10-30

2007-10-30

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S053290, C369S053170, C369S030170

Reexamination Certificate

active

10906982

ABSTRACT:
A method for determining the position of a pick-up head involves retrieving the respective parameter values relating to the linear velocity and angular velocity of the pick-up head at a certain place on the optical disk, and then calculating the ratio of the parameter value of the linear velocity to the parameter value of the angular velocity. Since the ratio is linearly correlated with the distance between the pick-up head and the center of the optical disk, the absolute position of the pick-up head can be determined, as far as its whereabouts is concerned.

REFERENCES:
patent: 5790488 (1998-08-01), Uemura
patent: 6111830 (2000-08-01), DeCusatis et al.
patent: 6914862 (2005-07-01), Tsai et al.
patent: 544669 (2003-08-01), None

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