Power saving apparatus for electronic musical instrument

Details Power saving apparatus for electronic musical instrument Power saving apparatus for electronic musical instrument

1982-08-18

1984-08-07

Witkowski, S. J.

Music

Instruments

307 31, 364707, G10H 100

Patent

active

044636466

ABSTRACT:
A CPU provides control instructions according to key switch information supplied from a keyboard. An LSI receives the control instructions and generates a corresponding digital tone signal, which is converted in an acoustic system into an analog tone signal which is in turn supplied to a loudspeaker for producing sound. A power supply unit can be connected to the LSI and acoustic system through a transistor. The transistor is on-off controlled according to a power-off signal which is provided from the CPU according to a silent state signal generated from a power saving circuit in the LSI.

REFERENCES:
patent: 4321851 (1982-03-01), Adachi
patent: 4419917 (1983-12-01), Sato

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