Abstract: The invention relates to a method of copy detection of a record carrier. In one particular embodiment the table of content entries are mastered on the record carrier in a detectable non-standard way, e.g. the sequence of table of content entries is mixed or the number of repetitions is varied. According to another embodiment additional synchronization symbols are used in one or more subcode frames which can be detected by a read-out device in order to distinguish between an original or a copy of a record carrier.

Abstract: A method of providing a read-only record carrier on which user data can be recorded at predetermined recordable positions of subcode frames of a subcode channel after mastering of said record carrier, includes the steps of setting the subcode symbols at said predetermined recordable positions to a first predetermined symbol value during mastering, calculating, for each subcode frame, error detection data over certain subcode data of said subcode frame including said subcode symbols set to said first predetermined symbol value, storing said error detection data at auxiliary data positions in said subcode frame, and setting error detection data positions in said subcode frame to a second predetermined symbol value, wherein said predetermined recordable positions of said subcode frames are provided for recording of user data to it during writing of data, and said error detection data positions of said subcode frames are provided for recording correct error detection data, calculated after recording said user dat