| 摘要 |
A noncontacting keyboard encoder having an interlocking system for preventing erroneous readouts in response to a concomitant actuation of a plurality of keys in which there is provided for each character to be encoded a key-operated floating plate which is eccentrically biased to a position at which respective saturating magnets carried thereby are positioned adjacent a column of locations at which saturable cores are selectively arranged in a coded pattern and adjacent a saturable gate core spaced from the column normally to inhibit generation of signals on respective output lines each of which is common to corresponding positions of all columns and on a readout gating line common to all gate cores in response to an interrogating signal on an interrogating line threading all cores. Actuation of a key first enables the associated gate core and then the associated column cores and release of the key first disables the column cores and then the gate core to prevent readout until one key is fully actuated and when two keys are concomitantly actuated.
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