Recent advances in haptic technology have focused on delivering haptic vibrations to the user's hand, either through touched physical surfaces (or objects) with embedded haptic devices or through worn (or held) haptic feedback devices such as a gloves or controllers. In most of these devices, the sensation of touch is controlled by modulating either the intensity or frequency of the haptic actuation. One missing piece is a sense of direction . Our hands perceive haptic actuation over an area rather than at a single point; by using the subtle phase and amplitude differences in the vibrations felt over an extended surface, humans can detect the direction of haptic vibrations, in addition to their intensity and frequency. This added dimension of directional vibration has not received significant attention in the haptic literature.

Eye tracking is a technology of growing importance for mobile and wearable systems, particularly for newly emerging virtual and augmented reality applications (VR and AR). Current eye tracking solutions for wearable AR and VR headsets rely on optical tracking and achieve a typical accuracy of 0.5° to 1°. We investigate a high temporal and spatial resolution eye tracking system based on magnetic tracking using scleral search coils. This technique has historically relied on large generator coils several meters in diameter or requires a restraint for the user's head. We propose a wearable scleral search coil tracking system that allows the user to walk around, and eliminates the need for a head restraint or room-sized coils. Our technique involves a unique placement of generator coils as well as a new calibration approach that accounts for the less uniform magnetic field created by the smaller coils. Using this technique, we can estimate the orientation of the eye with a mean calibrated accuracy of 0.094°.

L'invention concerne un dispositif d'entree comportant a la fois un capteur tactile et un capteur de position. Un ordinateur utilisant des donnees provenant du dispositif d'entree utilise le mouvement relatif d'un contact sur un capteur tactile par rapport au mouvement fourni par un detecteur de position pour effectuer un lever d'ambiguite entre des mouvements volontaires et involontaires. Le dispositif d'entree fournit a l'ordinateur des donnees de capteur de position et de capteur tactile synchronisees pour permettre un traitement du mouvement relatif et effectuer d'autres calculs portant a la fois sur les donnees du capteur de position et du capteur tactile. Le dispositif d'entree peut coder l'amplitude et la direction du mouvement du capteur de position et les combiner aux donnees du capteur tactile provenant de la meme trame temporelle, et fournit en sortie les donnees synchronisees a l'ordinateur.