Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Reexamination Certificate
2005-03-29
2005-03-29
Dinh, Tan (Department: 2653)
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
C369S030160
Reexamination Certificate
active
06873578
ABSTRACT:
The invention provides an adaptive brake force setting system. Every time when a pickup head with a predetermined mass crosses a plurality of recording tracks in an optical recording media, the system is used for selling brake force to make the pickup head stop from a predetermined initial brake position to a target recording track. The system comprises a detecting module and an estimating module. The detecting module is for detecting a final velocity and an acceleration of the pickup head when the pickup head arrives at the initial brake position. The estimating module is for, according to the final velocity and the acceleration, using a predetermined brake force estimating process to estimate the brake force exerted on the pickup head at each time for making the pickup head stop to the target recording track in a predetermined braking time. Therefore, the pickup head stop exactly to the target-recording track.
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Mediatek Inc.
Troxell Law Office PLLC
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