In an interactive multimedia environment that handles multiple sessions dynamically, a mechanism to control QOS among sessions is very important. As such a mechanism, the QOS-Control Server has been developed on RT-Mach. This paper gives the results of several experiments with this server, and describes the extensions of RT-Mach.
Traditionally, a stand-alone client application is rendered collaborative for members of a team either by sharing its view or by rewriting it as a collaborative client. However, it may not be possible to anticipate in advance all preferences for collaboration, hence such a client
Fingerprinting schemes deter people from illegally redistributing digital data by enabling the original merchant of the data to identify the original buyer of a redistributed copy. So-called traitor-tracing schemes have the same goal for keys used to decrypt information that is b