Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1996-11-12

1998-01-13

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84621, 341 24, 341 26, G10H 118, H03K 1794, H03M 1100

Patent

active

057082278

ABSTRACT:
In an electronic musical instrument which generates musical tone signals based on playing information input from a key switch circuit 10, a key scan circuit 11 includes a decode circuit 22 to which the current status information and the previous status information read out from a scan data memory 21 are input, and if status information which cannot be processed is input, the decode circuit 22 converts it to status information which can be processed, and if there is no empty space in an output data buffer 24, the decode circuit 22 detects no status change. Such construction allows malfunction to be prevented with a simple construction.

REFERENCES:
patent: 4182210 (1980-01-01), Nishimoto
patent: 4644841 (1987-02-01), Nagashima et al.
patent: 4932303 (1990-06-01), Kimpara
patent: 5446237 (1995-08-01), Abe et al.

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