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公开(公告)号：US20250014550A1
公开(公告)日：2025-01-09
申请号：US18891350
申请日：2024-09-20
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII
IPC: G10H1/18
Abstract: A music device according to an embodiment of the present disclosure comprises a plurality of sensors that detect a movement of a plurality of performance control elements, respectively, the plurality of performance control elements including at least three performance control elements, a first transmitter that serially transmits identification information to identify a first group of data and the first group of data, using a first predefined number of data channels in time-division of a first predefined number of cycles, and a first receiver that identifies the first group of data from data serially received from the first transmitter based on the identification information. The first predefined number of data channels includes at least two data channels, the first predefined number of cycles includes at least two cycles. The first group of data includes information indicating a detection result output from each of the plurality of sensors.
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2.发明申请公开(公告)号：US20220277713A1
公开(公告)日：2022-09-01
申请号：US17747120
申请日：2022-05-18
Applicant: YAMAHA CORPORATION
Inventor： Daisuke MIURA , Masahiro KAKISHITA , Kenichi NISHIDA , Shinichi ITO , Akihiro SUGISHIMA , Shinichi OHTA , Tsuyoshi SATO , Yasuhiko OBA , Jun ISHII
Abstract: A sound production control apparatus has a position detector that detects, in accordance with a playing operation of a musical instrument, a position of a key displaceable within a movement range from a start position to an end position. The movement range includes a sounding range including a sounding position and a setting range that is closer to the start position than the sounding range. The apparatus causes a played sound associated with the key to be produced upon the detected position of the key reaching the sounding position, while controlling a characteristic of the played sound depending on a displacement characteristic of the key within the setting range before the key is positioned in the sounding range.
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公开(公告)号：US20220270581A1
公开(公告)日：2022-08-25
申请号：US17743697
申请日：2022-05-13
Applicant: YAMAHA CORPORATION
Inventor： Akinori KANEHARA , Jun ISHII
Abstract: A detection system detects a position of each of a plurality of movable members that are displaceable by a playing operation. The detection system includes a controller configured to generate a first signal with a signal that level discontinuously changes over time, a Pi filter configured to convert the first signal to a second signal with a signal level that continuously changes over time, and a signal processor configured to generate, using the second signal, an output signal that depends on a position of each of the plurality of movable members.
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公开(公告)号：US20190245370A1
公开(公告)日：2019-08-08
申请号：US16384091
申请日：2019-04-15
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII
Abstract: A circuit includes a signal processor configured to perform a signal processing, an amplifier configured to amplify a signal output from the signal processor, a first power supply path connected from a battery to the signal processor, a second power supply path connected from the battery to the amplifier, a capacitor connected to the second power supply path and that assists power supplied to the amplifier, and a power limiter connected to the second power supply path and that limits input power supplied from the battery.
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公开(公告)号：US20250029581A1
公开(公告)日：2025-01-23
申请号：US18905447
申请日：2024-10-03
Applicant: YAMAHA CORPORATION
Inventor： Yoshimasa ISOZAKI , Katsunori SUZUKI , Takahiro TERADA , Takashi MORI , Jun ISHII , Ibuki HANDA , Takuya FUJISHIMA , Koji YATAKA , Yukio WAKUI , Soichi TAKIGAWA , Akira MAEZAWA , Haruki OHKAWA , Yoshikatsu MATSUBARA , Yasuhiko OBA , Fukutaro OKUYAMA , Tomoya SASAKI , Rei FURUKAWA
Abstract: A control device in one embodiment includes a first transmission unit, a first receiving unit, and a first generation unit. The first transmission unit is configured to transmit first performance data including contents of playing a keyboard instrument at a first communication base to a second communication base. The first receiving unit is configured to receive second performance data from the second communication base. The first generation unit is configured to generate a drive signal to produce a sound in accordance with the second performance data and output the drive signal to a sound generation device at the first communication base. At least one of the first performance data and the second performance data includes a key position signal indicating a key press amount on the keyboard instrument.
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Patent Agency Ranking
公开(公告)号：US20230013774A1
公开(公告)日：2023-01-19
申请号：US17951255
申请日：2022-09-23
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII , Michiko TANOUE
Abstract: A displacement sensor includes: a detectable portion: including a first coil; and being disposed on a movable member that is displaceable in response to an operation; and a signal generator: including a second coil that opposes the first coil; and being configured to generate a detection signal based on a relative position between the first coil and the second coil. A first distance from a first end of the first coil to a second end of the first coil in a first direction differs from a second distance from a third end of the first coil to a fourth end of the first coil in a second direction perpendicular to the first direction when the first coil is viewed in plan view.
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公开(公告)号：US20220270580A1
公开(公告)日：2022-08-25
申请号：US17743616
申请日：2022-05-13
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII , Masao NORO
IPC: G10H1/34
Abstract: An input device includes a first operating element and a first sensor. The first sensor includes a first conductor, a first coil, and a first magnetic material forming an open magnetic circuit together with the first coil. A positional relationship between the first coil and the first magnetic material is fixed. A first distance between a first end portion of the first magnetic material and the first conductor varies according to the amount of operation on the first operating element. The first sensor outputs a first signal corresponding to the first distance.
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公开(公告)号：US20200168243A1
公开(公告)日：2020-05-28
申请号：US16690168
申请日：2019-11-21
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII , Shinya MIZOSHIRI , Hisashi NAGAI
Abstract: An audio device includes a base portion a power supply circuit arranged on the base portion and configured to output electric power; a rotation body rotatably supported by the base portion and configured to, upon rotation of the rotation body, move a playback point of a piece of music; an electric circuit arranged on the rotation body; and a non-contact power feeding mechanism configured to supply in a non-contact manner the electric power output by the power supply circuit to the electric circuit in which the non-contact power feeding mechanism is arranged on a path from the power supply circuit to the electric circuit.
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公开(公告)号：US20150020676A1
公开(公告)日：2015-01-22
申请号：US14334818
申请日：2014-07-18
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII
IPC: G10H3/18
CPC classification number: G10H3/18 , G10H3/185 , G10H3/186 , G10H2220/395
Abstract: A pickup device includes: a speed detector which is configured to detect speed of vibration of a soundboard of an acoustic musical instrument; and a signal generator which is configured to generate an audio signal from the speed detected by the speed detector and to output the audio signal.
Abstract translation: 拾取装置包括：速度检测器，被配置为检测声乐器的音板的振动速度; 以及信号发生器，被配置为根据由速度检测器检测的速度产生音频信号并输出音频信号。
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10.发明申请公开(公告)号：US20250157442A1
公开(公告)日：2025-05-15
申请号：US19024332
申请日：2025-01-16
Applicant: YAMAHA CORPORATION
Inventor： Jun ISHII
Abstract: An automatic playing piano 100 configured to executes a musical performance by driving a key 1 based on musical playing information MP, the automatic playing piano 100 includes a controller including a memory storing instructions and a processor that implements the instructions to: set an adjustment time AT for adjusting a timing of driving the keys to correct a discrepancy in sound generation timing due to an operation delay time from receiving an instruction to play one sound specified by the musical playing information MP to generating the one sound by driving one of the keys, and convert an intensity of each sound specified by the musical playing information MP according to the set adjustment time AT set.
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