METHOD OF MAKING OPTICAL DISC, OPTICAL DISC, OPTICAL DISC PLAYBACK METHOD, OPTICAL DISC PLAYBACK DEVICE AND OPTICAL DISC RECORDING DEVICE Russian patent published in 2014 - IPC G11B20/12 G11B27/10 

FIELD: physics, computer engineering.

SUBSTANCE: invention discloses a method of making a master disc, an optical disc, a playback method and an optical disc recording and playback device. In the method of making a master disc, original address information is encoded (S21) to form encoded original address information. The format of the address of the encoded original address information is structured for a Reed-Solomon code based on nibbles, wherein the length of each code word is fifteen nibbles: nibble 0 - nibble 14, each nibble having four bits. Bit inversion is performed (S22) for given nibbles from fifteen nibbles of the encoded original address information to form partially inverted encoded original address information. The given nibbles, for which bit inversion is performed, are defined by an inversion vector 111100010000100. Fifteen components of the inversion vector correspond to fifteen nibbles: nibble 14 - nibble 0, respectively, and vector components with value 1 define given nibbles.

EFFECT: preventing use of an optical medium on playback equipment of another version.

8 cl, 18 dwg