METHOD OF INFORMATION CONTROL FOR COPY PROTECTION ON RECORD CARRIER, RECORD CARRIER WITH INFORMATION FOR COPY PROTECTION OF RECORDED CONTENT, METHOD AND DEVICE FOR RECORD /REPRODUCTION OF RECORD CARRIER Russian patent published in 2008 - IPC G11B20/10

Abstract RU 2328778 C2

FIELD: copy protection.

SUBSTANCE: data of main content are recorded in coded form. Copy protection of information (CPI), which is necessary for decoding of coded data of main content, is recorded in preset field of permanent information and control data (PIC) and is also copied at least once in the field that is different from the field of permanent information and control data (PIC).

EFFECT: provides reproduction of decoded data even in case of damage of field of permanent information and control data of high density record carrier due to scratches and contamination.

26 cl, 8 dwg

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RU 2 328 778 C2

Authors

Sukh San Voon

Kim Chin En

Dates

2008-07-10—Published

2004-01-24—Filed