US 7,443,884 B2 · Electronic data transmission and reception system

Abstract

An electronic data transmission and reception system has n apparatus, a transmitting apparatus, and a receiving apparatus which are connected to a network. The transmitting apparatus transmits first electronic data to a first apparatus. The receiving apparatus receives (n+1)th electronic data from a nth apparatus. A jth (j is an integer satisfying 1≦j≦n) apparatus generates (j+1)th electronic data which comprise jth electronic data with a signature assigned thereto for identifying the jth apparatus, and transmits the (j+1) electronic data to a (j+1)th apparatus. When j is n, an (n+1)th apparatus corresponds to the receiving apparatus. The electronic data transmission and reception system guarantees the first electronic data transmitted by the transmitting apparatus until the first electronic data are received by the receiving apparatus, because of signatures that are generated until the (j+1) electronic data are generated.

Claims25

Dependent claims

An electronic data transmission system for transmitting electronic data from a transmitting apparatus to a receiving apparatus that is different from said transmitting apparatus, said system comprising:

first through nth apparatuses connected to a network, where n is an integer of 2 or greater;
a transmitting apparatus connected to said network for transmitting first electronic data to said first apparatus;
and
a receiving apparatus connected to said network for receiving (n+1)th electronic data from said nth apparatus,
wherein a jth apparatus transmits a notification of a reception of nth electronic data to said receiving apparatus when said nth apparatus receives said nth electronic data from a (j−1)th apparatus, j being between 1 to n,
said receiving apparatus transmits a receiver authenticator to said jth apparatus, which authenticates the reception of said notification from said jth apparatus, and
said jth apparatus generates (j+1)th electronic data which comprise said nth electronic data and said receiver authenticator with a signature of the nth apparatus assigned thereto, and transmits said (j+1)th electronic data to a (j+1)th apparatus.

4 more elements

An electronic data transmission and reception method for transmitting electronic data from a transmitting apparatus to a receiving apparatus that is different from said transmitting apparatus, said method comprising:

connecting first through nth apparatuses to a network, where n is an integer of 2 or greater;
transmitting from a transmitting apparatus connected to said network first electronic data to said first apparatus;
receiving with a receiving apparatus connected to said network (n+1)th electronic data from said nth apparatus;
transmitting a notification of a reception of nth electronic data from a jth apparatus to said receiving apparatus when said nth apparatus receives said nth electronic data from a (j−1)th apparatus, j being between 1 to n;
transmitting a receiver authenticator to said jth apparatus, which authenticates the reception of said notification from said jth apparatus;
and
generating with the jth apparatus (j+1)th electronic data which comprise said nth electronic data and said receiver authenticator with a signature of the nth apparatus assigned thereto, and transmitting said (j+1)th electronic data to a (j+1)th apparatus.

4 more elements

Dependencies are inferred from the claim text.

Electronic data transmission and reception system

Life of this patent

Electronic data transmission and reception system

Life of this patent

Abstract

Claims25