IDRS NVMS Solution

IDRS NVMS (IDRS distribution Net-Video Management System) is aimed to build remote surveillance project with multi-level so that each monitoring-branch can keep in touch with monitoring-center real-timely. Thus monitoring-center is easy to manage the whole project.

1. Customer demands

1) Set up monitoring-center; keep surveillance on still customers and motive customers. Instantly receive and cope with alarms.
2) Set up monitoring-branches in every area or main department so as to monitor customers real-timely, receive and cope with alarms instantly.
3) Monitoring-branches can keep in touch with monitoring-center real-timely. Thus monitoring-center is easy to manage the whole project.

2. Main points of solution designing

1) Set up multi-level distribution surveillance system
The major problem lies in structure of entire system. Our system not only can perfectly monitor all worksites of cameras, which refers to receiving audio & video signals and sensor signals, but also can solve how to manage so many worksites of camera and so many monitoring-branches, which is more important than the former function of simply receiving signals. In such a huge and complex system, the former function (receiving signal) is easier than the latter which is mainly applied for integrating various equipments, information, customer resources, and complex operations of all parts of system. By this way, an actual management system is built successfully with strict order, high efficiency, excellent flexibility and much convenience. Thus we should adopt advanced core device——“multimedia digital host”, as well as pay attention to the ability of system managing and the construction of management platform. Now, we adopt “IDRS distribution management platform”.
A. System structure
B. Main sections introduction

a front-end devices
In CCTV system, the front-end devices include camera, lens, pan/tilt, housing and other accessory equipments, as well as “IDRS6000S multimedia digital surveillance host (with memory)” or IDRS40Xc series net-video server (without memory) which compress audio & video signal into digital signal as to store locally or upload to network. The IDRS series adopts advanced H.264 skill of compression which is a new kind of video encoding standard based on MPEG—4. H.264 overcomes weakness of MPEG—4 and H.263, adopting new encoding method and enhancing encoding efficiency in mix coding environment, thus H.264 faces actual application. Comparing to other compression formats, H.264 format has own features: encoding between frames, predicting skill of action compensation of changeable blocking; inside-frame encoding, space predicting skill with multi-direction; in-loop deblocking filter, get rid of blocking effect; 4x4 integral transform and corresponding quantization strategy; improved motion prediction encoding; more efficient entropy coders such as CABAC/CAVLC, RDOpt and so on. Therefore, H.264 skill has advantages beyond comparison no matter on local surveillance, storage and network uploading as to realize network surveillance. Besides, for it is created by the two biggest international standardization associations, H.264 has broad market.
b Recording & Stream Media Server
As the important device in CCTV system, Recording & Stream Media Server refers to “network monitoring host” which are in each monitoring center or monitoring branch and are composed by multimedia computer, decoding hardware and “Recording & Stream Media Server software”. Recording & Stream Media Server is in charge of connecting video station of previous monitoring center or direct connecting each “IDRS multimedia digital host” (DVR) and ”IDRS DVS” (digital video server) so as to display remote images, record objects, control pan / tilt and receive alarm signal.
It is necessary to notice that in “IDRS distribution management platform”, higher level monitoring center visits all channels signal by directly visiting “Recording & Stream Media Server” involved in these lower level monitoring centers. Thus, it is avoided that multi-level centers visit DVR or DVS, which leads to occupy more bandwidth, waste resource and reduce bandwidth which causes to fail to visit or appear system halted. If parts of surveillance sites have no monitoring-branch, these sites can be directly controlled by Recording & Stream Media Servers of monitoring-center.
For limited by computer-self and present network environment, one video-workstation can only remotely control and manage finite DVR and DVS (max 24 channels video). So when there are excessive surveillance-sites, monitoring-branches of all levels need “multiple video-workstations” manage cooperatively.
c Management & Authentication Server
For a big network surveillance system, there are usual scores of even hundreds of channel signal. So, it is necessary for all levels monitoring-branch to build numerous “Recording & Stream Media Servers” which are in grouping management of DVR surveillance signal and DVS surveillance signal. Moreover, system should preset multiple monitoring-branches with different levels and temporary monitoring-branches various visitors. In such a situation, we must adopt a “central manager”------Management & Authentication Server which prevents system from breakdown caused by excessive confusion. As the system management center and data authorization center, Management & Authentication Server is responsible for centrally manage various controlling-devices (DVR, DVS, Recording & Stream Media Server) and various terminal-users. Management & Authentication Server includes functions such as data record & registration authentication on every device, data record & registration authentication on every user, internal equipments ownership configuration, internal authorization configuration of users, remote central adjustment of device parameters & setting, and resource distribution & appointment. “Management & Authentication Server” which is composed by multimedia computer and “Management & Authentication Server software” is usually installed in monitoring-center.
d Network clients
Network clients are not monitoring-center clients. Network clients refer to these unmemorable “personal low level clients” which have remote surveillance demands but are not online all the time. Due to these clients are relatively casual and usually personal clients with lower surveillance demands which refer to functions of remote surveillance and controlling, we put such clients into “network clients” series in order to differ to the terminal users of “monitoring-center”. “Network clients” are also composed by multimedia computer and “clients’ software”, but because of few demands, “network clients” can be operated by laptop conveniently whenever or wherever.
C. System operating introduction
When monitoring-branches or clients begin surveillance remotely, it is necessary to logon “Management & Authentication Server” and pass “name and passport”
Management & Authentication Server recognizes and authenticates current user according to system data previously stored.
Passed through authentication, user enters relative interface which shows authorized operations list (or all surveillance sites available), manages the remote surveillance sites. At the present, nevertheless, every time login need manually add address of front-end equipments, which is not only a tiring process but also a difficult affair for finding some useful addresses in such a surveillance system with hundreds of channels.
D. System functions
a Functions of Management & Authentication Server 
Managing front-end equipments 
Add, revise and delete front-end equipments involving Network Video Server (NVS) and DVR. 
Revise front-end equipments such as NVS and DVR about name, IP address, and Subnet Mask, gateway, connecting port, user name as well as passport. 
Set description, image quality of transmission and transmission speed for each monitoring channel of those front-end equipments such as NVS and DVR. 
Overlay clock and character or not, even can adjust their positions and colors in window.
 Set control-protocol of pan / tilt for front-end equipments such as NVS and DVR.
 Preset position of high speed dome camera.
 Preset execution of dome position timing and automatically.
 Set option of PPPOE dial-up function (ADSL is the common), set PPPOE dial-up name and passport.
 Set option of DNS analyzing function and IP address & connecting port of DNS server; (suitable for dynamic IP environment).
 Managing Recording & Stream Media Server
 Add, delete Recording & Stream Media Server 
Set video-workstation image source (the related front-end equipments) 
Set option of displaying image in real-time pattern. 
Set video-workstation record plan and record mode (alarm record, continuous record and non-record) 
Authority management 
Manage authorization of all users which belong to video-workstations of Management & Authentication Server and various network clients. 
Set operating authority of users: including management authority of Management & Authentication Server, control authority of pan / tilt lens, adding & deleting users & monitoring channels. 
Users’ logon with name and passport provided by Management & Authentication Server, because Recording & Stream Media Server can not manage authority. 
With system shielding function, blockade interface of Recording & Stream Media Server, preventing illegal visitors from interfering. 
With keyboard-locking function, blockade hot-keys of Recording & Stream Media Server keyboard, preventing illegal visitors from interfering. 
Display status of devices working 
Automatically span status of listed devices every certain time which is set-able. 
Display status of front-end equipments; 
Display status of Recording & Stream Media Server; 
Record log of system connection 
Other functions 
Remotely restart front-end equipments (only supports NVS and embedded DVR) 
Remotely upgrade system of equipments. 
Browse software version of front-end equipments.
b Functions of Recording & Stream Media Server 
Image displaying 
Recording & Stream Media Server can display 1~24 images at the same time. 
Each channel is up to 25 f/s (PAL) in all-real-time or 30 f/s (NTSC). 
Single image or multi images displaying is optional, even multi-channel displays in loop pattern. 
Hide images of being secret 
Continuously adjust image brightness, contrast, saturation and hue. 
Display working status in each channel, which involve continuous record, motion detection record, alarm linkage record, alarm linkage record, pure surveillance, as well as rest space data of hard disk. 
Audio function 
Support 1~24 channels audio & video synchronous inputting function with high quality audio and without noise. 
Remote viewing with spot listen-in 
Each channel video and audio is synchronously stored; audio and video is in same packet without audio distortion for playback. 
Voice-talk function 
Recording & Stream Media Server can directly talk-back with front-end equipments without reply. 
Video storing 
Each channel is up to 25 f/s (PAL) in all-real-time or 30 f/s (NTSC). 
According to the schedule provided by Management & Authentication Server, system can adopt numerous record patterns such as continuous record, motion detection record, alarm linkage record and manual record. 
It is available to overlay character and date watermark. 
Support multi hard disks record in loop, need not manually replace full-disk. 
Search & playback function 
Accurately search wanted data by involved hour, minute even second. 
Playback and record synchronously and mutual noninterference. 
It is available for video data to be searched time and event; video data storage is showed by chart in order to be noticed clearly. 
It is available to playback with single full-screen or multi channels. 
Playback with full real-time which is up to 25f/s (PAL) 
There are many different kinds of speed of displaying including normal display, frame-by-frame play, fast playback (2~5 times), slow playback (1/2~1/5), picture freezing & jumping to specified time play. Moreover, the size of playback images can be adjusted. 
When play-backing, system supports snapshot which refers to digital photographing and electronic magnification and print. 
System supports local client and remote client playback audio & video synchronously. 
Digital matrix 
After installing video card, Recording & Stream Media Server can putout analog signal to TV-wall etc. 
Support compressed stream decoding of 1-24 channels and analog output of 1-24 channels. 
Digital matrix supports single step switching, automatic switching and grouping switching. 
Control function 
Multi-channel control pan / tilt with all-direction. Manual control or automatic control is optional. 
Support the focusing of motorized zoom lens and the controlling of aperture and zoom. 
Support assistant controlling of light and wiper. 
It is available to control high speed dome. Manually set preset-position of high speed dome and preset-position of alarm linkage. Turning speed of high speed dome is adjustable. 
System protection 
System supports counter proof function of water mark, which prevents image from being modified or simply verifies even if modified. 
Stand-alone playing 
The back-up data can be played on any device by using related software. 
Back-up and peripheral output 
Support back-up of HDD (hard disk driver), DVD, and DAT and such like. 
It is available for images to snapshot, store, magnify and print, even generated into BMP picture. 
It is available for video data to copy and play in other place by using dedicated software. 
It is available for video data to putout to floppy-disk, printer and USB portable hard disk.
c Functions of net client 
Image display 
Support max 24 channels images display synchronously. 
Single image or multi images displaying is optional, even multi-channel displays in loop pattern. 
Each channel is up to 25 f/s (PAL) in all-real-time or 30 f/s (NTSC). 
Continuously adjust image brightness, contrast, saturation and hue. 
Audio function 
Support 1~24 channels audio & video synchronous inputting function with high quality audio and without noise. 
Remote viewing with eavesdropping
Each channel video and audio is synchronously stored; audio and video is in same packet without audio distortion for playback. 
Voice talk functions 
Recording & Stream Media Server can directly talk-back with front-end equipments without reply. 
Video storing 
Support manual recording with automatic storage. 
Each channel is up to 25 f/s (PAL) in all-real-time or 30 f/s (NTSC). 
Support multi hard disks record in loop, need not manually replace full-disk. 
Search & playback function 
Accurately search wanted data by involved hour, minute even second. 
Playback and record synchronously and mutual noninterference. 
It is available for video data to be searched time and event; video data storage is showed by chart in order to be noticed clearly. 
It is available to playback with single full-screen or multi channels. 
Playback with full real-time which is up to 25f/s (PAL) 
There are many different kinds of speed of displaying including normal display, frame-by-frame play, fast playback (2~5 times), slow playback (1/2~1/5), picture freezing & jumping to specified time play. Moreover, the size of playback images can be adjusted. 
When play-backing, system supports snapshot which refers to digital photographing and electronic magnification and print. 
System supports local client and remote client playback audio & video synchronously. 
Control function 
Multi-channel control pan / tilt with all-direction. Manual control or automatic control is optional. 
Support the focusing of motorized zoom lens and the controlling of aperture and zoom. 
Support assistant controlling of light and wiper. 
It is available to control high speed dome. Manually set preset-position of high speed dome and preset-position of alarm linkage. Turning speed of high speed dome is adjustable.
2) Video, audio and alarm detection cooperate as to realize utmost linkage effect
For the surveillance field with high security grade, in order to pay more attention to the security work, it is necessary to set up a cubic detection system with all-direction and multi-method. Thus we must, based on “video surveillance system”, build “video & alarm linkage detection system” which adopts “material prevention, technical prevention” for ensuing reactions during series of “instant alarm—accurate judgment—quick record—effective warning”. The realization of these system-functions depends on whether DVR host has two factors: (1) Perfective platform for alarm input (2) Linkage design with intelligence.
According to the above analysis, we adopt IDRS6000S series digital-multimedia-surveillance-system which has the best performance contemporary. Digital-multimedia-surveillance-system ensures operate synchronously during the below linkage functions (available): 
Once alarm detector is triggered, alarm signal will be immediately transmitted to local monitoring room. Then alert clock and alert light automatically starts to alarm with 110-auto-dialer operating synchronously. The related chargers are alarmed by telephone or mobile phone. 
As local monitoring room receiving alarm, the monitoring interface of IDRS host will pop out electronic map (planar graph, not GIS map) which shows alarm position. 
IDRS monitoring host automatically opens alert light / emergency lamp automatically opens, which provide camera sufficient luminance in order to watch alert situation clearly. Besides, it is operable for operators to control light manually so as to watch alert situation whenever. 
After detector is triggered, the related camera or cameras will automatically start to record. Besides, system supports pre-recording alarm function which can records whole process of event. 
Provided front-end section installs intelligent all-in-one camera, the camera will automatically turn to alarm area in order to capture images. Thus guards can instantly check images. Because of saving time of manual operation, it saves a lot of time for dealing emergency. 
System supports management for alarm log, automatically recording alarm situation and information in order to investigate later. 
Helped by the network alarm function of IDRS host, detector will automatically upload local alert video and information to the first level control center or other net computers with alarm linkage, such as local police station. Net alarm host has as same alarm linkage functions as locals which include automatic popping out electronic map with showing alarm position, automatic uploading & popping out alarm images, automatic recording alert situation, displaying & recording alarm info, operating alert clock & alert light and dial-up kit and other alarm devices. Moreover, remote controllers can control the output alarm functions of local monitoring center. These functions include opening & closing acousto-optic alerter, dial-up alerter and light ON/OFF. Accordingly, the whole system enlarges effective scope of alarm, strengthens security detection mechanism and management mechanism, and avoids passive affection caused by local controller’s absence. Thereby, security is greatly enhanced.