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Tactile Display With Directional Force Feedback

This new touch panel concept imparts a directional tactile feedback force to the user, by moving the panel surface. Developed by a research group with members from NEC and the Tokyo Institute of Technology, the system uses wires to pull the four corners of the panel. The tensile force to be applied to each wire can be adjusted, so the strength of the force, as well as the direction, can be controlled.

“This system produces a sensation like when you hit an object, enabling you to understand where the object is. With vibration alone, you know you’ve hit an object, but just touching an object doesn’t enable you to understand where it is. You will know if you look at it, but the information you can sense by touch is insufficient.”

“In this demo, when you touch the ball, if it’s rolling toward you slowly, the force you feel is weak, and if it hits you quickly, you feel a strong force from it. So in that regard as well, this system differs from a tactile display using vibration.”

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Visible-Light Communication Projector Adds Information To The Projected Image

At the University of Tokyo, the Naemura Group is researching interactive ways of presentating information, using a projector that communicates through visible light.

A visible-light communication projector can add information to the projected image, by making each pixel in the image flash at high speed. Because the flashing occurs 10,000 times per second, the display appears normal to the human eye. But if you place a light-receiving device near the picture, the device can read information from the different flashing patterns made by each pixel.

“Right now, I think you can see the picture floating in space. If you move this rod, the floating picture also moves in line with the rod. The tip of the rod has a light-receiving device, which obtains information about its position within the image, and the image changes in line with that.”

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