I. System Overview

        Multimedia video conferencing system from the main venue of the meeting and web conferencing systems simulcast system. The main venue of the meeting by an audio system sound systems, digital conferencing camera tracking system, large-screen display system, composed of four parts central intelligent control system.

 (A), the main venue of conference system

        1, the audio sound system:

       Depending on the size of the meeting room, the choice of two pairs of speakers, one pair of the main speaker (for FOH). Another speaker of the auxiliary do (to compensate for uneven sound field), also equipped with a mixer. Also prevent microphone howling suppressor feedback selection.

2, digital conferencing camera tracking system:

Meeting to discuss digital system uses a host system and a portable conference unit, automatic camera tracking system uses a video switcher and ceiling high speed PTZ cameras.

        3, large-screen display system:

       Large-screen display system using Connaught Shanghai Holley 46-inch LCD splicing unit, Model: BC46AA-03 any stitching, you can achieve full-screen display, single-screen display, multi-screen display and window roaming. Select the size of the venue according to the size of mosaic screen.

        4, the central intelligent control system:

       Using Holley Connaught central control system is controlled by a control system controlling the projector switches; control VGA signal switching; control the video signal switching; control DVD, VCR and other equipment; control electric curtains; via wireless IPAD control interface according to user requirements any programming.

      (B), Web conferencing simulcast system

       1, the system functions

      (1) Web conferencing simulcast system conference room speaker speech scene (video, audio) and electronic document used (including LCD screen writing, whiteboard writing on the blackboard, digital video booth projection) real-time encoding compression, network simulcast on several other off-site receiving point, the user can see in real time the meeting live content over a computer network.

      (2) real-time broadcast system at the same time, the content can be live recorded and saved to the server made into a full stream format for participants not demand viewing and archiving.

      (3) of the saved file can also be produced on CD-ROM distributed to participants to watch. And can use the editing tools provided by the system to save the file for editing, made into a multimedia courseware meeting, then publish to the Internet for on-demand.

      (4) In order to ensure order and security control session file, the system provides a powerful service management capabilities to users, live, on-demand tasks rigorous certification and control. But also on the state and the load capacity of the server to be monitored.

        2, the technical requirements

      (1) The system requires the use of B / S structure.

      (2) the need to support hierarchical user rights management, allow or restrict specified client program to watch.

      (3) video and audio streaming support for popular standards such as WMV or RM streaming media format, screen flow in the stream stored in the storage file format. Video and audio synchronization, streaming video and audio sync with the screen flow, stable work 24/7.

      (4) real-time system to produce multi-bandwidth audio and video content (28.8K-1.5M), 500K of bandwidth for near DVD effect.

      (5) The screen flow acquisition speed up to 20 frames / sec, and is adjustable from 0 to 20 / seconds, animated, flash smooth playback, use unique technology to achieve high-quality, low-bandwidth and 0 ~ 2M Room can be adjusted.