Conferencing DESY Outline:  about DESY  How VRVS and AccessGrid is used  Technical Equipment for VRVS and Webcast  Operation  RGB-Switch, Camera Control, Signal Mixing…

DESY  Deutsches Elektronen-Synchrotron  High energy physics reserach center  Operating a superconducting proton-electron collider –  HERA - for high energy phsics experiments and  provide synchrotron radiation for dedicated experiments  3 experiments ZEUS, H1 and HERMES each with more than 150 people  Project for development of a free electron Laser XFEL

Important issues for conferences:  For collaboration meetings:  sound and slides video of the speaker is less important different „classes“ of speakers using chalk on blackboard plastic transparencies electronic presentations with PPT, PDF… 

Strongly growing need for conference DESY  what is used:  ISDN and H.323 conferences via commercial equipment (Tandberg) ESNET AdHoc  VRVS --- growing

Usage of VRVS Until VRVS sessions each 2-3 month Own reflector on the campus Growing need since about one year Today regularly used for collaboration meetings of the particle physics groups Both mbone and h.323 in connection with our Tandberg codecs is used

Usage of AccessGrid AccessGrid is rarely used No multicast support on the DESY WAN router because of lack of experience If required, sessions can be provided over the VRVS gateway

Technical Equipment: Since summer 2005 development of a mobile Media-Rack, equipped with three 19“ PCs, a RGB-Crossbar and an Audio-receiver for mobile microphones. Advantage: can be used in any seminar room with IP connectivity Tasks for the 3 PCs (top-down):  Media Control  VRVS  and Presentation

Mobile Media-Rack Audio Receiver RGB Crossbar Mixer PC VRVS PC PC

Cabling Diagram:

Hardware: Capture devices: Video: Hauppauge ImpactVCB PCI adapter RGB: Datapath VisionRGB Pro 2 Dual channel PCI adapter Resolution up to 1200x1600 Support for Microsoft WDM architecture Advantage: independence of Operating Systems and presentation applications

Hardware: Audio System: Manufacturer: Sennheiser sender: Sennheiser evolution SK 500 G2 sender for handmicrophones: Sennheiser evolution SKM 565 G2 receiver: Sennheiser evolution EM 550 G2

Hardware: RGB Crossbar: Manufacturer: KOMTECH Kommunikationstechnik GmbH 8 Input channels 4 Output channels for RGB and Audio Control Interface by RS232 and IP

Operation: Main concept: Make everything controllable from remote

Operation: Mixer PC Applications : Camera Server application receiving RS232 control commands of the Sony EVI 70 camera over IP RGB Crossbar Control application for switching the various RGB signals Video Mixing application for mixing the video source(s) and 2 individual RGB sources, allows resizing, positioning and fading

Operation: VRVS PC applications : Remote Camera Control Client: Application for sending control commands to the Mixer PC over IP VRVS Session in Dual Screen Mode, vic windows being placed on the second screen

Operation: RGB-Crossbar Control: The RGB Crossbar Control is used for switching the Video signals of the 3 rack mounted PCs the signal of the speakers laptop and the video signal of the EVI camera to the 3 PCs and to the beamer(s).

Operation: RGB-Crossbar Control: Three standard settings are offered: VRVS local: Speakers Laptop Signal  Beamer Speakers Laptop Signal  VRVS-transmission VRVS remote: VRVS remote site  Beamer Speakers Laptop Signal  VRVS-transmission Local without any VRVS or Webcast: Speakers Laptop Signal  Beamer

Operation: Remote Camera Control: Buttons for moving horizontally and vertically and Zoom Buttons for pre-defined positions

Operation Mixer Application based on DirectX Programmed in Microsoft Visual Basic 6.0 Using Montivision Workbench for creating DirectX Filtergraphs

Operation Remote Beamer Control by RS232 over IP in test All three PCs can be operated remotely using VNC or Windows Remote Desktop

Thank you for your interest ???