In the case of a user-recorded disc, CCI or CGMS-A is updated to proh as mentioned, so that when the source is a cognizant device and the data include CCI/EMI=proh/proh or CGMS=proh as shown on Lists 1 and 4 in FIG. 5, each of cognizant recording and non-cognizant recording is prohibited, as shown on Lists 1, 4, List 3 and the right side thereof.