Electronic musical instrument, power control device for electronic musical instrument, and power control method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11810541
APP PUB NO 20210201878A1
SERIAL NO

17133681

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electronic musical instrument is provided and includes: a musical tone processing circuit processing a musical tone signal; an output jack for connecting the musical tone signal to an amplifier; a phone jack for connecting the musical tone signal to a phone; a switch for turning power supply ON or OFF; and a control circuit that determines whether power supply is necessary and selects power supply from among first, second and third power based on information indicating each power receiving state of the first to third power (respectively from AC adapter, USB cable, and battery), information indicating whether an output plug is inserted into the output jack, a phone plug is inserted into the phone jack, the USB cable is connected to USB jack, and an ON or OFF operation of the switch is performed, and information indicating a power supply ON or OFF state of the electronic musical instrument.

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Patent Owner(s)

Patent OwnerAddress
ROLAND CORPORATIONSHIZUOKA 431-1304

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koyama, Hideaki Shizuoka, JP 9 67
Mitsuhashi, Takeshi Shizuoka, JP 14 48

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