Patent ID: 8266374

Claim:
A method of identifying physical characteristic information of an optical disc, comprising: deriving a reading result by reading at least a first region of the optical disc, wherein a location of the first region is specified in a Blu-ray disc (BD) specification for recording information associated with recording management of a BD recordable disc; and identifying a first physical characteristic of the optical disc according to the reading result; wherein the location of the first region corresponds to a disc management area (DMA) specified in the BD specification; the first physical characteristic of the optical disc is a disc type of the optical disc; and identifying the first physical characteristic of the optical disc according to the reading result comprises: when the reading result indicates that the first region is not blank, checking data recorded in the first region, identifying the optical disc as a BD-R disc when the data recorded in the first region include sequential recording range information (SRRI) or a space bit map (SBM), and identifying the optical disc as a BD-RE disc when the data recorded in the first region include none of the SRRI and the SBM.