# US 2024/0203385 A1 · Electronic keyboard instrument, electronic instrument system, and sound emission control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0203385 A1 - Document ID: US20240203385A1 - Status: Published application - Kind: A1 - Application number: 18/535,323 - Filed: 2023-12-11 - Published: 2024-06-20 - Earliest claimed: 2022-12-16 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Makoto DANJYO; Fumiaki OTA; Atsushi NAKAMURA - Web page: https://patentgrep.com/patent/US20240203385A1 ## CPC - G10H 1/0008: {Associated control or indicating means} - G10H 1/344: {Structural association with individual keys (electrically operated wind-actuated organs G10B3/22)} - G10H 2220/221: Keyboards, i.e. configuration of several keys or key-like input devices relative to one another - G10H 2220/271: Velocity sensing for individual keys, e.g. by placing sensors at different points along the kinematic path for individual key velocity estimation by delay measurement between adjacent sensor signals - 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 keyboard instrument includes, a keyboard in which a plurality of keys are arranged; a sound emitter; and a controller. In a case in which a slide operation of sliding on a plurality of keys on the keyboard is detected, the controller controls the sound emitter to emit a first musical tone corresponding to a plurality of first keys pressed by the slide operation and a second musical tone corresponding to an unpressed second key positioned between the plurality of first keys. ## Claims ### Claim 1 An electronic keyboard instrument comprising: a keyboard in which a plurality of keys are arranged; a sound emitter; and a controller, wherein in a case in which a slide operation of sliding on a plurality of keys on the keyboard is detected, the controller controls the sound emitter to emit a first musical tone corresponding to a plurality of first keys pressed by the slide operation and a second musical tone corresponding to an unpressed second key positioned between the plurality of first keys. ### Claim 2 (depends on 1) The electronic keyboard instrument according to claim 1, wherein the controller, determines a second velocity value corresponding to the second key based on at least a first velocity value corresponding to a key included in the plurality of first keys, and controls the sound emitter to emit the second musical tone corresponding to the second key based on the determined second velocity value. ### Claim 3 (depends on 1) The electronic keyboard instrument according to claim 1, wherein the controller, determines a length that the second musical tone of the second key is emitted based on a difference of time of the two pressed first keys pressed successively in the slide operation and the number of unpressed second keys positioned between the two first keys, and controls the sound emitter to emit the second musical tone corresponding to the second key at the determined length. ### Claim 4 (depends on 1) The electronic keyboard according to claim 1, wherein, the keyboard includes a plurality of white keys and a plurality of black keys that are arranged in an array, and in a case in which a white key slide operation of sliding on a plurality of white keys of the keyboard is detected, the controller controls the sound emitter to emit the first musical tone corresponding to the plurality of first white keys pressed by the white key slide operation and the second musical tone corresponding to the unpressed black key between the plurality of first white keys. ### Claim 5 (depends on 1) The electronic keyboard according to claim 1, wherein, the keyboard includes a plurality of white keys and a plurality of black keys that are arranged in an array, and in a case in which a black key slide operation of sliding on a plurality of black keys of the keyboard is detected, the controller controls the sound emitter to emit the first musical tone corresponding to the plurality of first black keys pressed by the black key slide operation and the second musical tone corresponding to the unpressed white key between the plurality of first black keys. ### Claim 6 (depends on 1) The electronic keyboard according to claim 1, wherein the controller, estimates a next pressed key based on a relation of positions of two keys pressed successively in the slide operation, and in a case in which the next pressed key is the estimated key, determines that the slide operation is detected. ### Claim 7 An electronic instrument system comprising: an electronic keyboard instrument including a keyboard and a controller; and an electronic device including a sound emitter, wherein, in a case in which a slide operation of sliding on a plurality of keys on the keyboard is detected, the controller controls the sound emitter to emit a first musical tone corresponding to a plurality of first keys pressed by the slide operation and a second musical tone corresponding to an unpressed second key between the plurality of first keys. ### Claim 8 A control method performed by a controller of a keyboard instrument, the method comprising: in a case in which a slide operation of sliding on a plurality of keys on a keyboard is detected, controlling the sound emitter to emit a first musical tone corresponding to a plurality of first keys pressed by the slide operation and a second musical tone corresponding to an unpressed second key positioned between the plurality of first keys. ### Claim 9 (depends on 8) The control method according to claim 8, wherein the controller, determines a second velocity value corresponding to the second key based on at least a first velocity value corresponding to a key included in the plurality of first keys, and controls the sound emitter to emit the second musical tone corresponding to the second key based on the determined second velocity value. ### Claim 10 (depends on 8) The control method according to claim 8, wherein the controller, determines a length that the second musical tone of the second key is emitted based on a difference of time of the two pressed first keys pressed successively in the slide operation and the number of unpressed second keys positioned between the two first keys, and controls the sound emitter to emit the second musical tone corresponding to the second key at the determined length. ### Claim 11 (depends on 8) The control method according to claim 8, wherein, the keyboard includes a plurality of white keys and a plurality of black keys that are arranged in an array, and in a case in which a white key slide operation of sliding on a plurality of white keys of the keyboard is detected, the controller controls the sound emitter to emit the first musical tone corresponding to the plurality of first white keys pressed by the white key slide operation and the second musical tone corresponding to the unpressed black key between the plurality of first white keys. ### Claim 12 (depends on 8) The control method according to claim 8, wherein, the keyboard includes a plurality of white keys and a plurality of black keys that are arranged in an array, and in a case in which a black key slide operation of sliding on a plurality of black keys of the keyboard is detected, the controller controls the sound emitter to emit the first musical tone corresponding to the plurality of first black keys pressed by the black key slide operation and the second musical tone corresponding to the unpressed white key between the plurality of first black keys. ### Claim 13 (depends on 8) The control method according to claim 8, wherein the controller, estimates a next pressed key based on a relation of positions of two keys pressed successively in the slide operation, and in a case in which the next pressed key is the estimated key, determines that the slide operation is detected.