Taku Hachisu

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Musical video games that allow users to play expensive musical instruments in a virtual environment constitute one of the most popular genres in the field of video games. Recent developments in motion input technology have enabled users to play the instruments intuitively and immersively. However, output technology, in particular haptic feedback, is not as(More)
We present a new haptic augmented reality system that modulates the perceived stiffness of a real object by changing the perceived material with vi-bratory subtraction and addition. Our system consists of a stick with a vibrotac-tile actuator and a pad with an elastic sheet. When a user taps the pad, the innate vibration resulting from the tapping is(More)
Visual signs and audio cues are commonly used for pedestrian control in the field of general traffic research. Because pedestrians need to first acquire and then recognize such cues, time delays invariably occur between cognition and action. To better cope with this issue of delays, wearable devices have been proposed to control pedestrians more(More)
In this paper, we propose a novel stick-type interface, the "HaCHIStick," for musical performance on a tablet PC. The HaCHIStick is composed of a stick with an embedded vibrotactile actuator, a visual display, and an elastic sheet on the display. By combining the kinesthetic sensation induced by striking the elastic sheet with vibrotactile sensation, the(More)
In sports, dancing and playing music, it is important to achieve correct body movement as it greatly affects performance. However, matching one's movement with ideal movement is fundamentally difficult, because we do not have a detailed perception of our own body movement. In this study, we propose to present "rotary switch feeling" feedback as a new haptic(More)
We present VacuumTouch, a novel haptic interface architecture for touch screens that provides attractive force feedback to the user's finger. VacuumTouch consists of an air pump and solenoid air valves that connect to the surface of the touch screen and suck the air above the surface where the user's finger makes contact. VacuumTouch does not require the(More)
Characters with body materials that are different from that of humans, such as metal robots or rubber people, frequently appear in movies and comics. While the abilities of their synthetic bodies can be easily observed from their actions, their somatic sensations are more difficult to appreciate. Our aim in this work is to simulate the alteration of the(More)
We present a novel photo touch sensing architecture, HACHIStack. It can measure the approaching velocity of an object and predict its contact time with the touch screen using two optical sensing layers above the surface. The photo sensing layers form three unique capabilities: high-speed sampling, velocity acquisition, and contact time prediction. This work(More)
A gaze input interface offers hands-free operation by using the view-point position as the cursor coordinates on the display. However, the selection operation of a button is indistinguishable from viewing; this is known as the Midas touch problem. We propose a new input method that measures divergence eye movement, thereby enabling users to "press" a button(More)
The impression of food can be affected by " rendition " —i.e., the surrounding environment such as the appearance of the food and the dish—not just by its taste. We focused on the sound and vibration of liquid being poured from a Japanese Sake bottle as a haptic rendition of liquid. Sake bottles are known for their unique " glug " sound and vibration which(More)