Method for estimating power compensation and recording power...

Details Method for estimating power compensation and recording power... Method for estimating power compensation and recording power...

2006-04-04

2010-10-05

Negrón, Daniell L (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044290, C369S044320, C369S044330, C369S044310, C369S044350, C369S053230, C369S053280, C369S047500, C369S047510, C369S047520, C369S047530, C369S116000

Reexamination Certificate

active

07808865

ABSTRACT:
The method for estimating recording power Pow_tilting of a tilting part of a tilting disk is shown based on a power compensation formula: Pow_comp=A*(A*K). After a focus error (FE) signal of the tilting part of the tilting disk is manipulated as a focus servo output (FOO) signal, the parameter A is derived by low-pass filtering the FOO signal. Thereafter, another parameter K is then derived from a reference lookup table by using curve fitting approach based on parameter A such that the power compensation Pow_comp could be estimated by substituting parameters A and K into the above formula. A recording power Pow_tilting of the tilting part of the tilting disk could be estimated by adding a given recording power Piwrtpwr to the power compensation Pow_comp.

REFERENCES:
patent: 7366069 (2008-04-01), Kun-Yi
patent: 2002/0126605 (2002-09-01), Lee et al.
patent: 2003/0223337 (2003-12-01), Kimura et al.
patent: 2006/0114774 (2006-06-01), Kun-yi
patent: 11-213413 (1999-08-01), None

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