Key assigner for use in electronic musical instrument

Details Key assigner for use in electronic musical instrument Key assigner for use in electronic musical instrument

1975-08-19

1979-01-16

Witkowski, Stanley J.

Music

Instruments

340365S, G10H 100

Patent

active

041343204

ABSTRACT:
In an electronic musical instrument, key switches are scanned sequentially and repetitively in a high scanning rate to deliver key data consisting of a pulse existence at an assigned time slot and representing ON-OFF states of the key switches. The key data is converted into key codes of digital notation. The key codes are assigned to and memorized in time-shared channels of a high time-sharing rate. A time-sharing rate converter reads out the key codes of digital notation and produces key gate control signals at corresponding ones of individual output terminal in a low time-sharing rate.

REFERENCES:
patent: 3610799 (1971-10-01), Watson
patent: 3750160 (1973-07-01), Elzinga
patent: 3816637 (1974-06-01), Whitefield
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 3899951 (1975-08-01), Griffith et al.
patent: 3951028 (1976-04-01), Robinson
patent: 3955460 (1976-05-01), Southard
patent: 4011784 (1977-03-01), Fukui

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