# US 2019/0378484 A1 · Electronic musical instrument and automatic power-off method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0378484 A1 - Document ID: US20190378484A1 - Status: Published application - Kind: A1 - Application number: 16/547,849 - Filed: 2019-08-22 - Published: 2019-12-12 - Earliest claimed: 2017-03-07 - Assignees: Yamaha Corporation - Applicants: Yamaha Corporation - Inventors: Koichi MATSUNO - Web page: https://patentgrep.com/patent/US20190378484A1 ## CPC - G10H 1/18: Selecting circuits - G10H 7/002: {using a common processing for different operations or calculations, and a set of microinstructions, e.g. programs, to control the sequence thereof} - G10H 2230/035: Power management, i.e. specific power supply solutions for electrophonic musical instruments, e.g. auto power shut-off, energy saving designs, power conditioning, connector design, avoiding inconvenient wiring - G10H 2240/211: Wireless transmission, e.g. of music parameters or control data by radio, infrared or ultrasound - G10H: ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE ## Abstract An electronic musical instrument includes a condition determiner that determines whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a controller that turns off the power supply on the condition that the condition determiner determines that the OFF condition is satisfied in the automatic power-OFF mode; and the controller does not turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied. ## Claims ### Claim 1 An electronic musical instrument comprising: a condition determiner that determines whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a controller that turns off the power supply on the condition that the condition determiner determines that the OFF condition is satisfied in the automatic power-OFF mode, wherein the controller does not turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied. ### Claim 2 (depends on 1) The electronic musical instrument as recited in claim 1, wherein the audio signal is input by being received by communication, and the controller turns off the power supply regardless of the open state or a close state of the noise gate when external equipment that has an established connection using the communication is not present, in the case where the OFF condition is satisfied in the automatic power-OFF mode. ### Claim 3 (depends on 2) The electronic musical instrument as recited in claim 2, wherein the audio signal is input by being received by wireless communication. ### Claim 4 (depends on 2) The electronic musical instrument as recited in claim 2, wherein the audio signal is input by being received by short-range wireless communication. ### Claim 5 (depends on 1) The electronic musical instrument as recited in claim 1, wherein the OFF condition is satisfied when no operator of the electronic musical instrument continues being operated for a second predetermined period of time. ### Claim 6 (depends on 1) The electronic musical instrument as recited in claim 1, wherein the OFF condition is satisfied when a third predetermined period of time elapses from a time when the noise gate is opened. ### Claim 7 An electronic musical instrument comprising: a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a processor that is configured to determine whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode, and turn off the power supply on the condition that it is determined that the OFF condition is satisfied in the automatic power-OFF mode, wherein the processor is configured not to turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied. ### Claim 8 An automatic power off method of an electronic musical instrument comprising: determining whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; inputting an audio signal into the electronic musical instrument via a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and turning off the power supply on the condition that it is determined that the OFF condition is satisfied in the automatic power-OFF mode, wherein the turning off the power supply includes not turning off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied. ### Claim 9 (depends on 8) The automatic power off method of electronic musical instrument as recited in claim 8, wherein the audio signal is input by being received by communication, and the turning off the power supply includes turning off the power supply regardless of the open state or a close state of the noise gate when external equipment that has an established connection using the communication is not present, in the case where the OFF condition is satisfied in the automatic power-OFF mode. ### Claim 10 (depends on 8) The automatic power off method of an electronic musical instrument as recited in claim 8, wherein the OFF condition is satisfied when no operator of the electronic musical instrument continues being operated for a second predetermined period of time. ### Claim 11 (depends on 8) The automatic power off method of an electronic musical instrument as recited in claim 8, wherein the OFF condition is satisfied when a third predetermined period of time elapses from a time when the noise gate is opened.