Patent ID: 7791992

Claim:
A method for controlling a recording speed of a multi-layered optical disc, wherein the multi-layered optical disc has a plurality of recording layers and each recording layer is on an opposite track path, the method comprising: dividing the multi-layered optical disc into a plurality of zones, wherein each recording layer has the same corresponding zones; determining the quality of the zones of the multi-layered optical disc; setting the recording speed for each zone, wherein the recording speed is determined according to the quality of each zone; and recording data on the multi-layered disc according to the recording speed and the zones, wherein an optical drive reduces the recording speed when it is on inferior quality zones and records data from the inside to the outside and increases the recording speed when it records data on the next recording layer from the outside to the inside and has passed the inferior quality zones, and the recording speed of a subsequent zone is faster than the recording speed of a previous recording zone.