Information-transmitting apparatus

Claim 1

An information-transmitting apparatus comprising: a source of a series of data records separated from each other by record positioning codes, each record including a plurality of data words separated from each other by word positioning codes, each word including a plurality of digits; first memory means coupled to said source for successively storing the words of a series of records one after another; coincidence detection means coupled to said first memory means for comparing respective digits of a given word included in a given record stored in said first memory means with the respective digits occupying corresponding data positions of a word arranged in the same sequential position in another succeeding record; and control means coupled to said coincidence detection means for controlling the data transmission, said control means having an output and including means for stopping the delivery to said output of those of said digits of said succeeding record occupying the respective compared positions in words of said succeeding record having the same sequential position in the given record which indicate coincidence as the result of the comparison carried out by said coincidence detection means, and for delivering to said output only: (i) those of the digits of said succeeding record which do not coincide with corresponding digits of said given record; (ii) any other digits of said word of said succeeding record following said noncoincidence digits regardless of whether or not coincidence is detected as the result of comparison; and (iii) all of said record positioning and word positioning codes.