Mitsubishi Electric Corporation

Instachord Corp.

Yuichi Nagata

Yasuhiro Suzuki

Toshiki Tanaka

Shuya Sano

Hiroshi Sugie

Kohei Musha

Yoshihiro Urashima

An electronic musical instrument includes: a chord-playing input device; a sounding part that emits chord sounds; and a display part that displays an image. The chord-playing input device includes: a chord designating button group assigned with chords; a chord changing button group assigned with change methods for changing an assignment state for the chord designating button group; a sounding information generating part that generates sounding information for making the sounding part emit the sound of the chord corresponding to operation for the chord designating button group and chord changing button group; and a display information generating part that generates display information for making the display part display a plurality of chord images and change method images in the same arrangement order as those of the chord designating button group and chord changing button group.

Chord-playing input device, electronic musical instrument, and chord-playing input program

Keys for musical instrument

A cooling device includes a power module incorporating chips that generate heat and having chip arrangement in which a first chip having the largest amount of heat generation and second chips having the second largest amount of heat generation are not adjacent to each other and the first chip is adjacent to any two of third chips having the smallest amount of heat generation, a heat sink, to a base surface of which the power module is closely attached, and flat first and second anisotropic high heat conductors having a thermal conductivity higher than a main body disposed on the surface of the heat sink. The first and second anisotropic high heat conductors are separated into two and disposed under the first chip and under the second chips.

Cooling device and power module equipped with cooling device

A motor drive device in embodiments includes: a motor drive unit that generates a current for driving a motor on a basis of a position command and a position detection value of the motor; a motor-coil ambient-temperature estimation unit that calculates a motor-coil ambient-temperature estimation value by correcting an output value of a temperature sensor provided in a peripheral portion of a motor coil of the motor by using a filter including both a phase-lead characteristic and a low-pass characteristic; a motor-coil increased-temperature estimation unit that calculates a motor-coil increased-temperature estimation value on a basis of the current; and a motor-coil protection unit that limits the current on a basis of the motor-coil ambient-temperature estimation value and the motor-coil increased-temperature estimation value.

Motor drive device

Growing community of inventors

Tokyo, Japan

Yuichi Nagata