Alternating repeat keying signal generator

Details Alternating repeat keying signal generator Alternating repeat keying signal generator

1980-04-16

1982-04-06

Witkowski, S. J.

Music

Instruments

84 126, 84DIG12, 340365S, G10H 130

Patent

active

043229964

ABSTRACT:
A circuit for generating alternating repeat keying signals in an electronic keyboard musical instrument includes a clock, a logic circuit responsive to the keys of the instrument and to the clock for producing an alternating sequence of logic signals corresponding to each of the keys, the phase of the sequence corresponding to each undepressed key being the same as the phase of the sequence corresponding to the previous key and the phase of the sequence corresponding to each depressed key being opposite that of the phase of the sequence corresponding to the previous key and a plurality of output gates each developing a keying signal in response to the depression of a respective one of the keys and the logic signals of the corresponding sequence assuming a predetermined state.

REFERENCES:
patent: 3821458 (1974-06-01), Schreier
patent: 3910150 (1975-10-01), Deutsch et al.
patent: 4012982 (1977-03-01), Southard
patent: 4052924 (1977-10-01), Deutsch et al.
patent: 4085643 (1978-04-01), Griffith
patent: 4133244 (1979-01-01), Hiyoshi et al.
patent: 4145946 (1979-03-01), Deutsch
patent: 4163222 (1979-07-01), Gove
patent: 4178825 (1979-12-01), Deutsch
patent: 4207792 (1980-06-01), Hoskinson

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