This paper deals with two kinds of work in which two users manipulate different haptic interface devices from
each other. Although a number of haptic interface devices are currently available, the devices have different
specifications from each other. By experiment, we investigate the influences of difference in workspace size
between two devices (PHANToM Omni and PHANToM Desktop) on the efficiency of networked collaborative
work and the outcome of networked competitive work (i.e., a networked real-time game).
This paper deals with a system which conveys the haptic sensation experimented by a user to a remote user. In the
system, the user controls a haptic interface device with another remote haptic interface device while watching
video. Haptic media and video of a real object which the user is touching are transmitted to another user.
By subjective assessment, we investigate the allowable range and imperceptible range of synchronization error
between haptic media and video. We employ four real objects and ask each subject whether the synchronization
error is perceived or not for each object in the assessment. Assessment results show that we can more easily
perceive the synchronization error in the case of haptic media ahead of video than in the case of the haptic media
behind the video.
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