Method and system for controlling optical pick-up head...

Details Method and system for controlling optical pick-up head... Method and system for controlling optical pick-up head...

2008-07-11

2010-11-23

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S059120, C369S124150, C369S053200

Reexamination Certificate

active

07839756

ABSTRACT:
A method for controlling a position of a laser spot of a laser beam on an optical storage medium of a land and groove recording/reproduction type is provided. The method includes: detecting a pulse occurring in a reference signal while the laser spot is passing through a boundary between a groove track and a land track, wherein the reference signal is generated according to a reflected laser beam from the optical storage medium; determining a compensation value of the reference signal according to the pulse; utilizing the compensation value to adjust the reference signal for generating an adjusted reference signal; and utilizing the adjusted reference signal to control the position of the laser spot.

REFERENCES:
patent: 6456585 (2002-09-01), Takemura et al.
patent: 6493306 (2002-12-01), Nakane et al.

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