Patent ID: 7327934

Claim:
A data reproduction apparatus, comprising: a disc holding unit configured to receive a recording medium on which data including digital watermark status is recorded; a disc determination unit configured to determine a type of the recording medium received by said disc holding unit; a read processor configured to read the data including the digital watermark status from the recording medium received by said disc holding unit; digital watermark status detection element configured to detect the digital watermark status from within the data read from the recording medium by said read processor; a discrimination circuit configured to determine, if it is determined by said disc determination unit that the recording medium is of a first type, that the data read by said read processor should not be filtered, but determining, if it is determined by said disc determination unit that the recording medium is of a second type, whether or not the data read by said read processor should be filtered based on the digital watermark status detected by said digital watermark status detection element; a filter unit configured to filter, if it is determined by said discrimination circuit that the data should be filtered, part of the data read by said read processor; and an output unit configured to output the data filtered by said filter unit and the data read by said read processor but not filtered by said filter unit.