Embossed Touch Display: Illusory Elongation and Shrinking of Tactile Objects

A novel tactile display that can present any given width of objects. When the touched object moves, the object is perceived to elongate or shrink. Visual images synchronized with the tactile information are presented simultaneously.

Enhanced Life
Embossed Touch Display can present any given width of objects. In the real world, when we touch an object, we move our hands, and our fingertips gather and information sequentially. In this project, the object moves during the hand movement, and the illusory width of the object can be perceived. Insight into human tactile perception and advanced control of the object's movement have generated this new style of tactile display.

Goals
To develop a novel tactile display that can present not only shape, but also texture, viscosity, and other surface features. Eventually, this project will expand to a tactile-based multimodal information display that will be used to investigate the mechanisms of human tactile perception and apply them to tactile input/output interfaces.

Innovations
The main technical innovation is advanced control of the object in accordance with measured hand movements. The display is implemented with a laser distance sensor and a liner slider. The sensor measures the distance between it and the finger, and the liner slider is controlled in accordance with the distance. In addition, a small visual display can be mounted on the liner slider, so that any given width can be presented with synchronized visual images.

Vision
In daily life, we often work surrounded by flat-surface visual displays. The tactile-based multimodal Embossed Touch Display can add the sense of touch to such displays. It can be applied as a new tool for artistic expression, and it will significantly influence user-interface research and other scientific investigations.

Emerging Technologies Sketch

Contact
Hideyuki Ando
NTT Comunication Science Laboratories
hide@avg.brl.ntt.co.jp

Contributors
Tomohiro Amemiya
Taro Maeda
NTT Communication Science Laboratories

Masashi Nakatani
The University of Tokyo

Junji Watanabe
PRESTO Japan Science and Technology Agency