ViJ

Even if we limit the maximum number of destination nodes allowed in a multicast to be M, (M < JV), the total number of VPs needed is still very large. Fig.6 shows the number of VPs need vs. network size N under several M values. It can be seen that the multicast VP scheme is impractical for the huge number of VPs needed. Fig.S. VP multicast on a SONET ATM ring Fig.S. VP multicast on a SONET ATM ring 1.0E+09 1.0E+08 1.0E+07 1.0E+06 1.0E+05 1.0E+04 1.0E+03 1.0E+02 1.0E+09 1.0E+08 1.0E+07...

VHDL Code

The starting point for the VHDL code is that the IP header and SIMA parameters have been transferred to the card's SRAM. The VHDL state machine is illustrated in Figure 7. The initial transition from the init state will be forced by the control register signal 0x02. At first the FPGA chip will read the input SIMA parameter values from rows 5 and 6 (see Table 6) into its internal signals. After that the FPGA will calculate new p, MBR, and priority values in the calculate state. The priority...

Stiit

, wziteO , d ccnnedQ disconnect) This component encapsulates transport information (protocol, port) about the current producers of the global conference sessions in the Homelnfo structure. However sometimes, collaborative applications demand configurations in which subsets of participants would maintain their own side-band conferencing sessions. In MultiTEL, by assigning a NetworkSAP component representing transport connections of a group of participants, we can define parallel conferences...

Study of the Impact of Network Loss and Burst Size on Video Streaming Quality and Acceptability

BT Laboratories, Martlesham Heath, Ipswich, Suffolk, UK. david.hands bt-svs.bt.co.uk. miles msn.bt.co.uk Abstract. As multimedia IP services become more popular, commercial service providers are under pressure to maximise their utilisation of network resources whilst still providing a satisfactory service to the end users. The present work examines user opinions of quality and acceptability for video streaming material under different network performance conditions. Subjects provided quality...

References

Blake S., et al., An Architecture for Differentiated Services, Internet Draft Torrent Networking Technologies, October, 1998 2. Kilkki K., Simple Integrated Media Access, Internet Draft Nokia Research Center, June 1997 3. Nichols K, et al., Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers, RFC 2474, Cisco Systems Inc., December 1998 4. Loukola M.V, Engdahl T., Forsten J., SIMA Implementation architecture, in Proc. 13th International Conference on...

Design of an Integrated Environment for Adaptive Multimedia Document Presentation Through Real Time Monitoring

Eduardo Carneiro da Cunha, Luiz Fernando Rust da Costa Carmo, and Luci Pirmez E-mail educc, rust, luci nce.ufrj.br N cleo de Computaf o Eletr nica - UFRJ P.O.Box 2324, 20001-970 Rio de Janeiro-RJ - Brazil Abstract. The retrieval of multimedia objects is influenced by factor such as throughput and maximum delay offered by the network, and has to be carried out in accordance with the specification of object relationships. Many current network architectures address QoS from a provider's point of...

The Virtual Interactive Presenter A Conversational Interface for Interactive Television

Marc Cavazza1, Walter Perotto2, and Neil Cashman2 1 Electronic Imaging and Media Communications Department, University of Bradford, UK-BD7 1DP, Bradford, United Kingdom M .Cavazza Bradford.ac.uk 2 Sony Digital Network Solutions Europe, UK- RG22 4SB, Jays Close, Viables, Basingstoke, Hants, United Kingdom Walter.Perotto, Neil.Cashman Sonydnse.com Abstract. With the advent of multi-channel digital TV, accessing Electronic Programme Guides EPGs will become increasingly complex. This paper...

Content Fragile Watermarking Based on Content Based Digital Signatures

Jana Dittmann, Arnd Steinmetz, Ralf Steinmetz Jana.Dittmann darmstadt.gmd.de, Arnd.Steinmetz darmstadt.gmd.de, Ralf.Steinmetz KOM.tu-darmstadt.de GMD - German National Research Center for Information Technology, Institute IPSI Dolivostra e 15, D-64293 Darmstadt, Germany 49-6151-869-845 The development of new multimedia services and environments requires new concepts both to support the new working process on distributed computers and to protect the multimedia data during the production and...

Application Requirements and Relevant Research

Multimedia conferencing applications have differing requirements with respect to a recording system. In a multicast multimedia recording, the ultimate aim is not simply loss-free data and no delay, but rather a spectrum of different requirements In small-group distance learning sessions, the recording may serve to inform students not able to attend the lecture of the content, or it may serve as revision material. Both situations require a loss-free recording, with revision material also...