Track jump method for dual-layered optical disk reading device

Details Track jump method for dual-layered optical disk reading device Track jump method for dual-layered optical disk reading device

2007-02-06

2007-02-06

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

Reexamination Certificate

active

10626335

ABSTRACT:
A method is disclosed for jumping tracks on a double-layer optical disk from a first address A on a first data layer to a target address D on a second data layer. According to the method, the first address A where the optical head is currently positioned is read. Then, after jumping to the second data layer, a relative second address B on the second data layer that corresponds to the first address A on the first data layer is read. If the second address B on the second data layer is smaller than the first address A on the first data layer, then the address of the second address B on the second data layer is shifted and a new target address is obtained on the second data layer based on this address shift. A calculation function is performed based on the first address A and the new target address, and then the optical head is moved to the new target address on the second data layer. On the other hand, if the second address B on the second data layer is larger than the first address A on the first data layer, then a calculation function is calculated based on the second address B and the target address D, and then the optical head is moved to the target address D on the second data layer.

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