Method and device for storing main information with associated additional information incorporated therein

An electronic information processing device for storing constituent data of first information along with constituent data of second information, said constituent data of first information comprising a plurality of predetermined data units, said electronic information processing device comprising:

• a circuit which divides at least part of said constituent data of second information into a plurality of small-size data pieces and sequentially extracts the data pieces;
• an operating circuit which arithmetically operates respective values of particular ones of said predetermined data units of said first information in accordance with a predetermined algorithm containing a value of each of said data pieces as a parameter, wherein said operating circuit includes a circuit that determines a difference in value between one of the particular data units and a predetermined other one of the particular data units, a circuit that determines an operating value using, as parameters, the difference and a value of one of the data pieces and a circuit that arithmetically operates a value of the one particular data unit with the determined operating value;
• and
• a storage circuit which stores said constituent data of first information including the arithmetically-operated particular data units, whereby said constituent data of first information is stored with at least part of said constituent data of second information incorporated therein.

A machine-readable recording medium containing a group of instructions to cause said machine to store constituent data of first information along with constituent data of second information, said constituent data of first information comprising a plurality of predetermined data units, said instructions executable to perform a method comprising the steps of:

• dividing at least part of said constituent data of second information into a plurality of small-size data pieces;
• arithmetically operating respective values of particular ones of said predetermined data units of said first information in accordance with a predetermined algorithm containing a value of each of said data pieces as a parameter, wherein said step of arithmetically operating includes a step of determining a difference in value between one of the particular data units and a predetermined other one of the particular data units, a step of determining an operating value using, as parameters, the difference and a value of one of the data pieces and a step of arithmetically operating a value of the one particular data unit with the determined operating value;
• and
• storing the data of first information including the arithmetically-operated particular data units, whereby said constituent data of first information is stored with at least part of said constituent data of second information incorporated therein.

A method of storing constituent data of first information along with constituent data of second information, said constituent data of first information comprising a plurality of predetermined data units, said method comprising the steps of:

• dividing at least part of said constituent data of second information into a plurality of small-size data pieces;
• for each of predetermined groups of said constituent data of first information, arithmetically operating respective values of particular ones of said predetermined data units in accordance with a predetermined algorithm containing a value of each of said data pieces as a parameter, wherein a different algorithm is used for each of the groups within the first information;
• and
• storing the data of said first information including the arithmetically-operated particular data units, whereby said constituent data of first information is stored with at least part of said constituent data of second information incorporated in the data of the individual groups.

An electronic information processing device for storing constituent data of first information along with constituent data of second information, said constituent data of first information comprising a plurality of predetermined data units, said electronic information processing device comprising:

• a circuit which divides at least part of said constituent data of second information into a plurality of small-size data pieces and sequentially extracts the data pieces;
• a circuit which, for each of predetermined groups of said constituent data of first information, arithmetically operates respective values of particular ones of said predetermined data units in accordance with a predetermined algorithm containing a value of each of said data pieces as a parameter, wherein a different algorithm is used for each of the groups within the first information;
• and
• a storage circuit which stores the data of said first information including the arithmetically-operated particular data units, whereby said constituent data of first information is stored with at least part of said constituent data of second information incorporated in the data of the individual groups.

A machine-readable recording medium containing a group of instructions to cause said machine to store constituent data of first information along with constituent data of second information, said constituent data of first information comprising a plurality of predetermined data units, said instructions executable to perform a method comprising the steps of:

• dividing at least part of said constituent data of second information into a plurality of small-size data pieces;
• for each of predetermined groups of said constituent data of first information, arithmetically operating respective values of particular ones of said predetermined data units in accordance with a predetermined algorithm containing a value of each of said data pieces as a parameter, wherein a different algorithm is used for each of the groups within the first information;
• and
• storing the data of first information including the arithmetically-operated particular data units, whereby said constituent data of first information is stored with at least part of said constituent data of second information incorporated in the data of the individual groups.