Patent ID: 8228768

Claim:
An optical disc device capable of setting up an optical disc thereon, comprising: an optical pickup which irradiates said optical disc with a laser spot, a spindle motor which revolves said optical disc, a spindle-motor driving module which drives said spindle motor, and a control module which controls said optical pickup and said spindle-motor driving module, wherein said control module manages recording area of said optical disc such that said recording area is separated into a plurality of zones, wherein when a data transfer speed is decreased from a high data transfer speed to a low data transfer speed, then: the data transfer speed is maintained in the low data transfer speed when the laser spot is radially displaced to a boundary between a current zone and an adjacent zone and the data at the boundary is discontinuous; and the data transfer speed is increased to the high data transfer speed when the laser spot is radially displaced to a boundary between the current zone and an adjacent zone and the data at the boundary is continuous.