Data processing control apparatus with selective data readout

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G06F 1540, G06F 920

Patent

active

041330412

ABSTRACT:
A data processing control apparatus comprises a main memory for storing a plurality of record data serially arranged with a record positioning code between the record data, each record data including a plurality of word data serially arranged with a word positioning code between the word data, the word data each including at least one character data; and a processing memory means having a row/column matrix which is address designated by the outputs of row and column counters for permitting each word data in the record data to be stored in its address. A specific row of a heading column in the matrix in the processing memory means is address designated to permit the address position data in this row to be sequentially shifted in a row direction. Specific codes, each written in an address position following a final character data, in the word data are counted by a counter while an address shift is effected in a column direction from an address position in the specific row. A word order memory is adapted to beforehand store a numerical value corresponding to the order of a word data to be selected from the record data and a coincidence circuit is adapted to detect a coincidence between the number of specific codes counted by the counter and a numerical value stored in the word order memory. When a coincidence output is generated from the coincidence circuit a data readout from the main memory to the processing memory means is inhibited by the coincidence output of the coincidence circuit and only a word data corresponding to a selected word order is delivered to the data processing memory.

REFERENCES:
patent: 2925588 (1960-02-01), Sublette et al.
patent: 3107343 (1963-10-01), Poole
patent: 3582900 (1971-06-01), Goldman
patent: 3601808 (1971-08-01), Vlack
patent: 3704452 (1972-11-01), Beausoleil et al.
patent: 3729712 (1973-04-01), Glassman
patent: 3931612 (1976-01-01), Stevens et al.

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