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This paper proposes a Bluetooth-based indoor proximity detection method for nursing context awareness. We exploit proximity between Bluetooth devices attached to people and objects for estimating 1) room-level proximity of people and objects, and 2) mutual proximity between moving people and objects. We show that the proximity information exchanged between(More)
This paper presents a development history of a wearable, scalable vibrotactile stimulus delivery system. This history has followed a path from desktop-based, fully wired systems, through hybrid approaches consisting of a wireless connection from the host computer to a body-worn control box and wires to each tactor, to a completely wireless system employing(More)
Most attempts to realize an olfactory display have involved capturing and synthesizing the odor, processes that still pose many challenging problems. These difficulties are mainly due to the mechanism of human olfaction, in which a set of so-called “primary odors” has not been found. Instead, we focus on spatio-temporal control of odor rather than(More)
In the paper, we describe a series of stages in the development of a new virtual locomotion device designed to enhance remote, interpersonal communications. The latest system, called GSS (Ground Surface Simulator) , inherits the features of two previous locomotion interfaces, i.e. ATLAS (ATR Locomotion Interface for Active Self Motion) and ALF (ALive(More)
By sharing data regarding the sensations experienced by individuals, as well as by sharing their knowledge, we are readily able to communicate with each other, and there are possibilities to further evolve this communication method. The different sensations experienced during voluntary walking and enforced walking give us different feelings. Also, the(More)
Vibrotactile displays are expected to be effective tools for presenting personal information. We investigate the possibility of showing various kinds of information by making use of tactile apparent movement. As a first step, we observe the occurrence of apparent movement for various values of stimulus duration and stimulus onset asynchrony for two types of(More)
The CirculaFloor locomotion interface's movable tiles employ a holonomic mechanism to achieve omnidirectional motion. Users can thus maintain their position while walking in a virtual environment. The CirculaFloor method exploits both the treadmill and footpad, creating an infinite omnidirectional surface using a set of movable tiles. The tiles provide a(More)
In this paper, we explore the use of tactile apparent motion at different speeds for information display. A prototype vibrotactile tactor array was constructed, consisting of three rings of five voice-coil tactors each, and mounted on the upper arm of test subjects. The results of two experiments are presented: a study on the sensitivity to differences in(More)