DATA RECORDING METHOD AND DEVICE; DATA MEDIUM; DATA REPRODUCTION METHOD AND DEVICE Russian patent published in 2002 - IPC

FIELD: data recording and processing; data media. SUBSTANCE: data recording device has means for generating sectors, means for adding heading data to digital data of each sector, means for error-correction encoding, means for adding group of synchronizing data to digital signal, and means for recording digital signal. Data reproducing device has means for separating group of synchronizing data from digital signal, means for demodulating digital signal, means for demodulating digital data, means for digital-data error-correction recording, means for dividing digital data into sectors, and means for separating heading data from digital data in each sector. Methods describe operation of mentioned devices. EFFECT: enhanced reliability of protection against data copying and unauthorized use. 33 cl, 35 dwg