WRITE-ONCE INFORMATION RECORDING MEDIUM, INFORMATION RECORDING DEVICE, INFORMATION RECORDING METHOD, INFORMATION REPRODUCTION DEVICE AND INFORMATION REPRODUCTION METHOD Russian patent published in 2014 - IPC G11B20/12

Abstract RU 2504028 C2

FIELD: information technology.

SUBSTANCE: recording medium has a user data area and a control information area. Control information includes a space bitmap and a disc definition structure, which includes space bitmap location information. The size of the space bitmap is defined such that the combined size of the space bitmap itself and the disc definition structure is always equal to the size of one unit. If the size of the user data area in a predetermined recording layer exceeds a predetermined size, multiple space bitmaps are formed for the user data area of the predetermined recording layer.

EFFECT: arranging TDDS in a predetermined location for a disc with high density of recording on a layer.

40 cl, 30 dwg

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RU 2 504 028 C2

Authors

Takakhasi Josikhisa

Ito Motosi

Dates

2014-01-10—Published

2009-12-25—Filed