ELECTRONIC INFORMATION PROCESSING SYSTEM AND METHOD, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To prevent attached information from being deleted and changed and also to secure reproducibility by dividing attached information data into plural small-sized data pieces and dispersingly incorporating them in main information. SOLUTION: When electronic signature data expressing a copyright are to be dispersingly record in the musical control information MIDI data read out from the floppy disk drive 25 of an electronic equipment 1, the character string of a decided electronic signature is inputted by a panel switch 27. The character string is converted into the character code data string of an ASCII with a prescribed algorithm and bits equivalent to one byte are produced in the bit string of an 8-bit constitution. Next, key-on event data being in the MIDI data are successively taken out and respective bits are embedded in parts of velocity byte parts. When one round processing of the number of the byte constituting the electronic signature data is performed, this electronic equipment returns to the step of a prescribed processing by setting the pointer of the byte of the electronic signature at the leading of the byte in order to perform the write processings of the electronic signature data again.