Patent ID: 7355939

Claim:
A switch system of a plurality of control modes of a spindle motor when an optical pick-up (OPU) records or reproduces information on an optical storage medium, the switch system comprising: a first control module electrically coupled to the spindle motor and the optical pick-up (OPU), controlling the spindle motor to be operated in a present mode; a second control module electrically coupled to the spindle motor, controlling the spindle motor to be operated in a transition mode between the present mode and a target mode; and a switch controller electrically coupled to the first control module, the second control module and the spindle motor, receiving a present feedback signal associated with a rotation speed of spindle motor to generate a first switch signal, and receiving a target indicative signal associated with the information on the optical storage medium to generate a second switch signal, wherein the switch controller switches the control mode of the spindle motor from the present mode to the transition mode in response to the first switch signal based on the rotation speed, and the switch controller switches the control mode of the spindle motor from the transition mode to the target mode in response to the second switch signal based on the target indicative signal.