Record carrier comprising a rom mark and a playback device for retrieving the rom mark

For recording the original and recording carrier of features, and a drawer comprises a pattern in a ROM a recording, a pattern orientation is vertical to the path direction. The spatial relationships and illegal features of the interference, and can be easily detection. Capable of the single read by point of the light spot diameter comprises two mode; and correspondingly connected with a pattern, therefore the upright read pattern of fact static the space slot on a same base. The special pattern can be used for permit easily detecting is in interference fit for illegal copying and.