Patent Number: 6,166,727

Title: Virtual three dimensional space sharing system for a wide-area network environment

Abstract: The present invention makes it possible for a user to share a virtual three dimensional space consisting of a plurality of media in a large wide-area network which includes a wide-band/high-speed network and narrow-band/low-speed network, without causing congestion in the network. The present invention include a multicast message transmitting unit and multicast message receiving unit for performing multicast communication in the wide-band/high-speed network, a unicast message transmitting unit and unicast message receiving unit for performing unicast communication in the narrow-band/low-speed network. A multicast group managing unit, multicast message generating unit and unicast message generating unit coordinate the unicast communication and the multicast communication. A message thinning/re-assembling unit reduces the communication traffic in the narrow-band/low-speed network, and the wide-band/high-speed network and the low-band/low-speed network are provided with respective terminals for sharing a three dimensional virtual environment.

Inventors: Kozuka; Hiroshi (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: H04L 29/06 (20060101); G06F 015/00 ()

Expiration Date: 12/26/2017