Patent ID: RE42848

Claim:
An information transmission system comprising a light emitting unit that converts arbitrary information into an optical signal to output and a light receiving unit that receives said optical signal to reproduce said information, said light emitting unit including: determining means for logically determining a bit sequence that structures said arbitrary information; selecting means for selecting a specific bit pattern sequence from two bit pattern sequences having a low correlation with each other, pre-prepared based on the determination result by said determining means; modulating means for modulating said arbitrary information to light intensity according to the selection result by said selecting means; and output controlling means for performing control to output the optical signal with intensity modulated by said modulating means; said light receiving unit including: binarizing means for receiving the optical signal output from said light emitting unit to binarize according to the light intensity; bit pattern determining means for determining whether or not the bit pattern sequence included in the signal binarized by said binarizing means corresponds to any one of said pre-prepared two bit pattern sequences having a low correlation with each other; signal outputting means for outputting a logic signal corresponding to the bit pattern sequence determined by said bit pattern determining means; and reproducing means for reproducing said arbitrary information based on the output result from said signal outputting means.