Circuit arrangement for storing a text

Claim 1

A circuit arrangement for storing a text which comprises characters and combination characters composed of a plurality of characters, the characters being assigned code words, the arrangement comprising: memory means including a text memory for storing in primary group code words of individual first characters and of second characters which are portions of combination characters, and for storing in hierarchically classified subsidiary groups code words of third characters which are portions of combination characters, and an assignment memory for storing assignment data associated with the respective primary and subsidiary groups and which indicate the position and number of character positions of each primary and subsidiary group; and control means for generating assignment code connected to said memory means for inputting the code words and the assignment data into said text and assignment memories, said control means comprising code word generating means, and a comparator connected between said code word generating means and said text memory for comparing in accordance with predetermined criteria, code words to be input and code words already stored, and which is operable in response to the comparison in a first time to store the input code words and in a second time to exchange code words already stored in primary and subsidiary groups with code words stored in the particular next lower subsidiary group, said comparator comprising means for comparing the code words in accordance with the values of the sequence of their binary characters considered as binary numbers as the predetermined criteria.