Patent ID: 7492678

Claim:
An apparatus which stabilizes an operation of a disc driver, the apparatus comprising: a pickup which reads information from a disc that is received by the disc driver and outputs a radio frequency signal; a driver which drives the pickup; a radio-frequency signal processor which outputs a first defect signal that indicates an existence of a defect in the disc according to the radio frequency signal; a digital signal processor which generates a second defect signal that indicates an existence of the defect in response to the first defect signal being received in an active state of the disc driver; a servo controller which holds the driver in response to the second defect signal transmitted from the digital signal processor; and a controller which controls the first defect signal, which is transmitted from the radio-frequency signal processor to the digital signal processor, to be in the active state in a mode conversion setting section of the disc driver in response to a mode signal being generated in an active state.