Patent ID: 7656625

Claim:
A disc apparatus comprising: a DC motor which rotates a disc; a driving unit which supplies an offset voltage to the DC motor through two voltage supply lines; a controller which instructs the driving unit to supply the offset voltage; and a disc determination means which determines a type of the disc, which is either a DVD or CD, further includes a detector which is connected to the two voltage supply lines to detect a difference between voltages of the two voltage supply lines as a detecting voltage level during a start-up that the DC motor starts driving when the disc is in stopped state while the disc determination means determines the type of the disc and a failure judgment unit which judges whether or not the DC motor is at fault according to the detecting voltage level, wherein the failure judgment unit judges that the DC motor is at fault when the detecting voltage level is lower than a predetermined threshold level, and the controller controls the driving unit not to drive the DC motor in response to the judgment of the failure judgment unit that DC motor is at fault.