Yamaha Corporation

Naoaki Kurita

Hisashi Nagai

Taku Ueda

Hisanobu Suzuki

Yuji Sakurai

A rotation operation device includes a stepping motor and an operation element. The stepping motor has a rotating shaft. The operation element is provided on the rotating shaft. The operation element also rotates the rotating shaft.

Rotation operation device

An audio system includes an audio apparatus, a charger, and a conveyer. The audio apparatus includes a sound receiver to receive ambient sound, and a battery. The charger charges the battery of the audio apparatus. The conveyer includes a motor to transport the audio apparatus.

Audio system and method of controlling conveyer device

An audio visual device includes a drive circuit and a rotatable body configured to be driven by the drive circuit and configured to change a playback point of a sound signal representative of a series of sounds in accordance with a rotation of the rotatable body. The rotatable body configured to change the playback point of the sound signal is further configured to display an image.

Growing community of inventors

Hamamatsu, Japan

Naoaki Kurita