Disc drive apparatus

摘要

The present invention provides a disc drive apparatus capable of identifying a disc (12 cm) having a small data area (8 cm) in central as same as an ordinary 12 cm disc. The apparatus having a light receiving unit 105 b and a push switch 106 b The unit 105 b is arranged in a position where the unit 105 b detects the disc having the small data area in central when the switch 106 b detects the same, and where the unit 105 b does not detect a disc (12 cm) having a hole (8 cm) in central when the 106 b detects the same. The apparatus also has an disc identifier for identifying type of the disc based on the detected results of the light receiving units and/or the push switches.