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| Communications Problems in Conventional IP-Based Digital Video Surveillance Systems Over Wide Area Networks |
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Boundless' Multi-Stream Advantage™ improves recorded image quality and frame rate, increases cameras per neighborhood, and reduces bandwidth and data per month |
The Streams Window in Boundless' Control Panel client software lists sites, cameras and streams available live, time-shifted and recorded |
The Boundless Security System™
Puts You There |
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| How big a problem is the communication of video? |
| How much data is needed for video? A standard definition video camera, with full resolution and frame rate, provides about 200 million bits per second (Mbps) of raw (uncompressed) visual information. If one maintains high sharpness by compressing it "only" 50:1 using MPEG-4 or H.264, one needs 4 Mbps per camera. (JPEG compression would require several times this figure.) While 4 Mbps is small compared to 200 Mbps, and many vendors consider 4 Mbps to be a "low" data rate for video -- it is very high compared to the capability of wide area networks, especially wireless networks, and that's the problem. This is why we talk about our "ultra low" data rates, which are only a few percent of others' so-called low data rates. Our ultra low data rates are compatible with wired and wireless, wide area networks. |
| Thus the communications problem is that a "low" data rate of 4 Mbps per camera is high compared to the capability of wide area networks. Unless you have an expensive, dedicated, point-to-point, high speed network, the only place 4 Mbps per camera is practical is with wired local area networks. A data rate of 4 Mbps is 80% of the payload (i.e., the entire useful capacity) of an 802.11b Wi-Fi wireless network at short range, almost 3x the capacity of a T1 line (1.5 Mbps), and 8x to 16x the capacity of the 256 Kbps to 512 Kbps uplink speed of many DSL and cable Internet connections. (Cable and DSL download speeds are much faster, and enable one to browse the Internet quickly, but a site needs a high uplink speed to send video to the Internet.) And this is for only one camera. If one wants to view 16 cameras simultaneously with a data rate of 4 Mbps per camera, one needs a communications speed of 64 Mbps plus about 10% for packet overhead (45x the speed of a T1). This is impractical except for local area networks. |
| What one really needs for remote live access is a much lower data rate, in the neighborhood of 64 Kbps per camera, or even less, but still with many frames per second. But how does one get such an ultra low data rate while recording sharp images and providing live video with smooth motion? |
| How Boundless solves the video communications problem |
| The Boundless Security System™ satisfies competing needs for sharp, time-shifted and recorded images for investigations, smooth motion video for real-time monitoring, and ultra low bandwidth / data rates for situation assessment. Unlike other digital video surveillance, management, security systems that try to meet this wide range of requirements with only one video stream per camera, the Boundless Security System™ simultaneously and continuously provides three to eight, IP-video streams per camera, with different resolutions, frame rates, data rates and compression parameters. All streams are available live, time-shifted, and recorded via a single, simple, graphical user interface in Boundless' Control Panel client software that also provides extensive motion search capabilities. |
| The Boundless Security System™ is a comprehensive, digital video acquisition, recording, switching, distribution, management and display-formatting system. It improves the quality of recorded images, remote access and display of live, time-shifted and recorded images, and system reliability, survivability and serviceability. Used optimally, it enables users to avoid violating their wireless Internet Service Providers' fair usage bandwidth policies, reducing communications costs and enabling sustained operations with multiple cameras per site, and many sites per neighborhood. |
| The Boundless Security System™ is an inherently networked, Linux-based, open platform for third-party image understanding applications, and for embedding in OEMs' platforms. It uses only industry-standard computers throughout, avoiding sole-source manufacturing, service, expansion and interoperability problems. It uses analog CCTV cameras for video input. It has dual-mode, IP-based PTZ control, enabling it to use analog PTZ cameras with the Pelco-D protocol, as well as IP-PTZ cameras, such as the Sony SNC-RZ25N, SNC-RZ30N, and SNC-RZ50N, that have an analog video output. |
| The Boundless Security System™ is a comprehensive, inherently networked digital video surveillance system. It was designed from the ground up as a part of a wide area network and the Internet, not as just another component connected to a network. It brings the power of the wide area network to digital video surveillance without flooding the network with video. It provides the familiarity of digital video recorders with the ease of installation and unlimited expansion of IP-based systems. It provides frames per second instead of seconds per frame, at ultra low bandwidth. Sites can use either static or dynamic IP addresses. With Boundless' tunneling option, networks can have routable or non-routable Internet connections, and systems integrators can avoid the need to configure routers. |
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Boundless Security Systems, Inc. (BSSI) · 3 Simm Lane, Unit #1F · Newtown, CT 06470 USA
203-445-0562 · fax 203-445-0564 ·
info (at) BoundlessSecurity (dot) com
Copyright © 2005-8 by Boundless Security Systems, Inc. All rights reserved. All trademarks belong to their respective owners and are used for product identification purposes only.
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