A proactive file transfer scheme in a distributed haptic museum

This paper illustrates the effectiveness of a proactive file transfer scheme for adaptive display control in a distributed haptic museum with touchable exhibits, which is an application using haptic, audio and visual media. The proactive file transfer scheme dynamically changes the time to request the information files according to the network load in order to decrease the response time and to improve the media output quality. In this paper, we propose an estimation method which uses a part of information files as probe packets to estimate the network load. By experiment, we make a performance comparison among three schemes including the proactive file transfer scheme. Experimental results show that the proactive file transfer scheme with the proposed estimation method has smaller average switch times for display of an exhibited object than the other schemes.