FIELD: record media, reproducing devices, and recording on mentioned media. SUBSTANCE: information is ordered in compliance with record format, recorded in compliance with predetermined coding procedures, and includes format data pointing to parameters of record format. If mentioned coding procedures comply with those of other format dictating predetermined position of format information on record medium, this position has random combination. Format information is recorded in second position that differs from predetermined one. EFFECT: controllable access to recorded information and its copying; simplified protective system. 13 cl, 13 dwg
