Patent ID: 8171505

Claim:
A disc drive device capable of distinguishing discs of different diameters, and of loading the discs on respective proper positions using a slot-in system, comprising: a first driving unit for retraction, retracting the disc of each diameter in an inward direction of the device; a contacting pad, contacting with an edge of the disc retracted by the driving unit for retraction at different points depending on the disc diameter, and sliding in response to the retraction of the disc in a sliding position depending on a contacting point; a shifter, sliding in a direction of retracting the disc; and a connecting member, sliding in response to variation of the sliding position of the contacting pad, and rotationally moving in response to the sliding of the contacting pad, wherein the connecting member comprises a latching protrusion, rotationally moving in different trajectory in response to the sliding position of the contacting pad, the shifter comprises a guiding groove for latching protrusion, into which the latching protrusion is inserted, and when the latching protrusion is inserted into the guiding groove for latching protrusion, the rotational movement of the connecting member in response to the sliding of the contacting pad stops, and the disc is placed such that the disc of respective diameters is located at a predetermined relative position to a center of a turntable.