Key assignor

Details Key assignor Key assignor

1977-06-29

1979-02-13

Schaefer, Robert K.

Music

Instruments

84 124, 84DIG2, 84DIG23, 340365R, G10H 100

Patent

active

041389166

ABSTRACT:
A key assignor comprising a scanning means, a first clock memory, a second memory for releasing a switch information, a comparator, a priority circuit device, a means for inhibiting the write-in operation, and a means for extracting key codes. Key switches are divided into blocks to scan the latter without scanning all of key switches. Scanning time can considerably be reduced as compared to prior arts, thereby enhancing response greatly.

REFERENCES:
patent: 3981217 (1976-09-01), Oya
patent: 4022098 (1977-05-01), Deutsch
patent: 4074233 (1978-02-01), Swain

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