Optical information recording device and optical information recording method

An optical information recording method which records information in an information recording medium using holography, the optical information recording method comprising:

• a signal generating step of generating, from user data, two-dimensional data in which ON pixels and OFF pixels are arranged in a lattice shape;
• and
• a spatial light modulating step of displaying the generated two-dimensional data and of spatially modulating a transmitted or reflected light beam, wherein
• in the signal generating step, an error correction block generated by performing error correction coding to the user data is divided into b number of sectors (b:
• a natural number), each sector having a number of bits (a:
• a natural number),
• the sector is divided into c number of sub-sectors (c:
• a natural number) and bits are distributed to each of the c number of sub-sectors,
• arrangement order of the bits is randomized for each sub-sector to which the bits are distributed,
• the c number of sub-sectors in which the arrangement order of the bits is randomized are combined to generate an interleaved sector,
• the interleaved sector is divided into c/d (d:
• a natural number, c≠d, and c>d) and e number of divided interleaved sectors (e:
• a natural number, e≠b, and b>e) are combined to generate a pre-modulation block,
• the pre-modulation block is modulated by a modulation rule such that a lower limit value of the consecutive number of ON or OFF pixels arranged in a row direction among arrays of the pre-modulation block is to be f (f:
• a natural number) to generate a modulation string, and
• the modulation string is arranged in a data unit of a sub-page generated by dividing predetermined page data into g (g:
• a natural number) and a synchronization signal is arranged in a marker unit to generate the two-dimensional data, and
• the marker unit comprises a fixed pattern indicating the synchronization signal and a copy pattern of adjacent codes of the modulation string.