Patent ID: 7173886

Claim:
A method 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, comprising: a. reading the first address A where the optical head is currently positioned; b. jumping to the second data layer; c. reading a relative second address B on the second data layer that corresponds to the first address A on the first data layer; and d. if the second address B on the second data layer is smaller than the first address A on the first data layer, then: d1. obtaining a third address C which is equal to the first address A minus the second address B; d2. designating the first address A as the address where the optical head is positioned, and obtaining a new target address D+C on the second data layer; d3. performing a calculation function based on the first address A and the new target address; and d4. moving the optical head to the new target address on the second data layer; and e. if the second address B on the second data layer is larger than the first address A on the first data layer, then: e1. designating the second address B as the address where the optical head is positioned; e2. performing a calculation function based on the second address B and the target address D; and e3. moving the optical head to the target address D on the second data layer.