Data securing device with word input - has converter with comparator applied data word with stored control word and delivering corresponding securing block

摘要

The device has a converter with an input for data words and an output for data securing blocks. The converter unit(Ua) consists of a converter(U), comparator(V), two stores (SP1, SP2) and two switches (S1, S2). The comparator(V) compares each applied data word with a control data word stored in the store(SP1). In case of a non-coincidence, a data word securing block is delivered through the first switch(S1) to the converter output. In case of coincidence a control data word securing block stored in the second store(SP2) is delivered through the switch(2).