Method of controlling data writing velocity and optical disk...

Details Method of controlling data writing velocity and optical disk... Method of controlling data writing velocity and optical disk...

2006-04-04

2006-04-04

Miller, Brian E. (Department: 2652)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044270, C369S124140

Reexamination Certificate

active

07023783

ABSTRACT:
The method of controlling data writing velocity of an optical disk player is capable of correctly writing data on a nonstandard optical disk as well as a standard optical disk.The method comprises the steps of: analyzing a track pitch of an optical disk on the basis of a moving distance of an optical pick-up in a prescribed time and the address thereof when a data writing test is executed in an innermost area of the optical disk; judging if the optical disk is a standard optical disk having a standard track pitch or not; calculating an address of changing data writing velocity on the basis of the analyzed track pitch if the optical disk is a nonstandard optical disk; and changing the data writing velocity when the address to which the optical pick-up irradiates the laser beam reaches the calculated address.

REFERENCES:
patent: 6430125 (2002-08-01), Alon et al.
patent: 6856583 (2005-02-01), Harada
patent: 2002/0191506 (2002-12-01), Okamoto et al.

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