INFORMATION ENCODER, METHOD AND PROGRAM FOR ENCODING INFORMATION, RECORDING MEDIUM WITH THE PROGRAM RECORDED THEREON, INFORMATION REPRODUCING DEVICE, METHOD AND PROGRAM FOR REPRODUCING INFORMATION AND RECORDING MEDIUM WITH THE PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To provide an information recorder, etc., which can code the information to be recorded two-dimensionally and with higher information density.;SOLUTION: An input information dividing means 11 divides input information consisting of arranged bits into each information bit by making 2 bits as the information bit. A recording bit string generating means 12 and a basic block generating means 13 generate a coded block of 2×2 bits in which only bit correlated to the value of the information bit is set to 1 among the 2×2 coded blocks as a basic block, based on the information bit. An expansion basic block generating means 14 generates a coded block of 3×3 bits in which only the bit located in a position being 1 when the basic block is arranged in one predetermined corner is set to 1 among the 3×3 coded blocks as an expansion basic block for each generated basic block. A recorded image generating means 15 arranged each generated expansion basic block in the predetermined recording area according to the order of the information bit in the input information.;COPYRIGHT: (C)2003,JPO