Video wall and its importance in monitoring center
The role of convergence and big data has made video walls more and more important to the success of surveillance centers. Using a variety of software and hardware, the goal of any video wall in an operation center or surveillance center is to provide operators with the visual information they need to monitor, evaluate, and respond to various threats. Whether it is a large wall-to-wall monitor or a simple 2 to 2 video wall, operators can see what they need to see in a smaller facility.
Since the video wall is mainly used to highlight important information for the operator, it is necessary to understand the types of data that can be important for both standard operations and emergency situations. Then, operators and other stakeholders will look at this common operation map (COP) to provide correct actionable information and enhance situational awareness. In keeping with the trend of the entire security industry, there is more and more integration between various technologies including video, audio, etc., and video walls are used to display more and more information in a fast-access and user-friendly format. As almost all the latest security devices and applications utilize big data, the amount of information available to the command center will continue to increase, which will place higher and higher requirements on the processor behind the video wall. More and more at any time. Remote sources and push content to remote locations, so today's video wall processors must display IP-based content as well as traditional sources directly connected to the chassis. "In addition, remote workers are common nowadays, so the processor must also be able to send walls or any areas of interest to mobile devices."
More and more control room command center monitoring centers are using this technology. In the future, isemc believes that it will go to various industries and give people more convenient and faster work.
CVR is also called central-level video network storage equipment. It is a collective name for a class of special security video surveillance equipment developed from enterprise-level standard IPSAN/NAS network storage equipment combined with video surveillance applications.
Network high-definition video surveillance solves the problem of unclear image quality of analog surveillance video, and also poses challenges to supporting facilities such as network and storage. With the explosive growth of digital high-definition, the demand for storage capacity has grown geometrically. From the perspective of capacity, small-bay storage products (such as less than 8 bays) are greatly restricted by the number of cameras that can be stored. Therefore, the market demand for large-bay storage products is increasing, so many manufacturers have launched 8 Bay NVR, 16 bay NVR, 24 bay NVR to cope with the increase in capacity demand.
However, the increase in the number of disks alone cannot actually solve the problem. Embedded NVRs usually cannot meet the application requirements. Because of the increase in transfer capacity, actual applications have put forward performance, redundancy and reliability, manageability and maintainability. higher requirement. Therefore, the industry has set its sights on the inherent high performance (enterprise-level general-purpose processors), high reliability (RAID disk redundancy, network redundancy, redundancy, fan redundancy), and high manageability and maintainability (standard industrial Components, standard management protocols and interfaces) enterprise-level standard IPSAN / NAS network storage equipment.
IPSAN/NAS network storage equipment, originally standard IT equipment without video surveillance function, needs to be connected behind the server (the server is installed with video surveillance software). With the development of technology and the integration of surveillance and IT, the industry has gradually formed CVR central-level video network storage devices with different functions by removing the intermediate servers and directly installing various security video surveillance software modules on IPSAN/NAS network storage devices.
In the case of a poor CVR network, you only need to try to establish a session connection, and the reconnection process takes a very short time; IPSAN is likely to cause connection interruption when the network is poor, and the front-end and storage have to constantly try to remount the connection, which is costly. Sometimes it is easy to lose videos. The CVR storage mode can support video streaming through the encoder and directly written to the storage device, saving the cost of the storage server, avoiding the single point of failure and performance problems of the server, and ensuring the high stability and high performance of the monitoring service.
The iSEMC NP Pro controller supports CVR access, the default configuration CVR supports 8T and below hard disks as video disks, and supports hard disk dynamic detection, supports graphical RAID5 configuration, supports plan/video/alarm linkage video configuration (supports recording audio); supports local Export the backup video, support retrieval and tracking by type/date/time, support restart termination/pause/single frame/capture, support product combination use, unified management/operation.
HDMI, High Definition Multimedia Interface is a fully digital image and sound transmission interface, which can transmit uncompressed audio and video signals.
The HDMI interface can provide up to 5Gbps data transmission bandwidth, and can transmit uncompressed audio signals and high-resolution video signals. At the same time, there is no need to switch before the signal transmission, which can ensure the highest quality video and audio signal transmission. The advantage of using HDMI is: only one HDMI cable is needed to transmit video + audio signals at the same time, unlike AV or RCA multiple cables to connect; at the same time, because there is no need for digital/analog or analog/digital conversion, more High audio and video transmission quality. For consumers, HDMI technology not only provides clear picture quality, but also greatly simplifies the installation of home theater systems because the audio/video uses the same cable. The HDMI interface supports the HDCP protocol, laying a foundation for watching copyrighted HD videos.
Compared with the previous digital video interface dvi, it has an absolute advantage.
HDMI can transmit digital video and audio signals at the same time, just use one cable, DVI can only transmit digital video signals, and transmit audio signals can only use other interfaces and cables
HDMI can transmit high-definition digital video signals, and the video effect is better than DVI
HDMI transmission rate is faster than DVI (higher)
HDMI transmission distance is farther than DVI under the premise of ensuring no distortion, HDMI cable can be up to 15 meters long, and DVI can only reach 8 meters
5.HDMI interface volume is smaller than DVI
HDMI is compatible with DVI, the video signal can be connected to the DVI interface through the conversion interface
HDMI is used on monitors that can display both video and sound (such as LCD TVs). DVI can only be used on a single monitor.
Therefore, from any angle, HDMI cabe will gradually replace DVI and become the most common interface type in the project.
Check the HDMI cables for ismec video wall controller
Based on the distance limitation of the traditional controller transmission line (HDMI/DVI), choosing AV OVER IP to exchange data through the switch can solve the problem of distance limitation. Because the network does not have distance limitation, it can even be realized remote signal transmission projects by replacing physical signal lines such as HDMI with a network cable.
Strong Scalability
Traditional controllers usually have chassis card slot restrictions. The signal source only supports expansion in the chassis. In the future, if the expansion exceeds the limit of the number of channels in the chassis, then the chassis must be replaced and additional costs will be paid. However, the AV OVER IP device is connected through the switch, all projects that need to be expanded only need to ensure that the switches in the project have enough interfaces.
How to AV over IP devices usually connect?
The physical signal source arrives at the input node through the HDMI cable, is encoded to generate an IP video data stream, and then reaches the output node through network equipment such as network cables and switches, and then decodes the obtained IP video data stream back to the physical video stream signal and transmits it to the video wall.
Features of NP Pro products based on AV over IP
NP Pro is iSEMC's latest AV OVER IP product. The control pc can connect to the device through the network and has its own Preview function to realize visual interface management, which is convenient for users. The Linux-based NP Pro has enough memory, so it supports the upload of video images or text content, thus meeting the needs of the information publishing system. The addition of the KVM server enables the control PC to have the function of remotely controlling the input source PC, which is equivalent to the presence of a Teamviewer connection between two PCs to realize KVM control services; the WEB server supports the NP Pro system to add 4-8 controllable web pages Resources, users can specify the URL of the web page, which is mostly used in the big data industry; the CMS server, as a node for centralized management of video stream forwarding, provides better stability for the project; the CVR server supports scalable storage and supports arbitrary settings Storage time and storage content are mostly used in CCTV projects.
Ultra-high compatibility, support external network connection, and compatible with mainstream Internet monitoring systems, and mainstream brands NVR/DVR/DVSV; support IPC main stream and sub-stream intelligent switching, greatly improve decoding efficiency, support streaming media forwarding function, user support copy video signals at will. Multi-channel display supports split/splicing/roaming/overlay/stretching/shrinking, supports multimedia resources (video/picture/audio/text), supports PC/iOS terminal real-time control and preview through the network. Support computer desktop push, support scene saving and scene patrol, support PTZV, support image enhancement, video denoising and other technologies, enhance viewing experience, adjust the contrast/brightness/color/saturation of any picture, support GB28181 protoco, support product overlay use, Unified management/operation.
The requirements of the 3x3 video wall matrix project based on the LG 55INCH screen are as follows:
The LG display panel is well received in the Video Wall project. Its excellent stability and display performance are the industry leaders. Take 55INCH 0.88 as an example. Its characteristic parameters are as follows:
LG high-end splicing display panel
Professional display solution, exquisite picture quality
Complete interfaces, DP 4K digital loop-through
function Anti-bum and auto standby functions available for screen protection
(3x3 video wall matrix)
Feature:
(1) High definition, high brightness, high color gamut
Definition, brightness, and color saturation are three important performance indicators of liquid crystal. LG splicing display adopts advanced digital signal processing technology and hardware splicing technology, combined with the latest technology of LG IPS LCD screen, with high definition, high brightness, Features of high color gamut.
(2) Ultra-narrow design
Because LCD uses backlight tubes as the light source, its edges are generally wide. The splicing display adopts the latest LG LCD screen and unique hardware splicing technology. Its unique narrow-edge design makes it used for splicing without affecting the overall vision effect.
(3) Advanced automatic adjustment of screen parameters
LG IPS LCD splicing screen uses the self-developed advanced automatic adjustment function of display coefficients (brightness, contrast, chroma, white balance) to ensure that the entire splicing screen has the same color even after a long period of use It can also achieve stability and consistency in terms of performance and brightness uniformity.
(4) Stable operation and long life, low maintenance cost.
Liquid crystal display technology is currently the most excellent flat panel display technology, and it is the mainstream of the display industry, especially the LG LCD screen used in splicing displays. Its lamp tube has a service life of more than 50,000 hours, and the image is stable after long hours of work. Liquid crystal display technology does not have any consumables and equipment that need to be replaced regularly, so the maintenance and repair costs are extremely low.
(5) Beautiful display screen structure
LCD splicing displayThe thickness of a single screen is only 0.88mm, which can save most of the installation space, and is easy to install, adapting to the application requirements of different places of use.
Function:
Original LG splicing display panel This products users the original LG high-end splicing display panel which has such advantages as high brightness, wide viewing angle, chromaticity reaching up to 1.07b,and stable display.
Ultra Industrial Design
Industrial sheet metal design brings strong quality feeling. Humanized appearance design offers simple and practical experience.
User-friendly menus
User can select the color temperature mode and adjust display parameters such as brightness, contrast and saturation according to the environment, so as to optimize the picture quality.
Complete interfaces, digital loop-through
Support DP 4K digital signal loop-through; provide HDMI, DVI and VGA input ports, and DP, DVI input and output ports; suitable for various application scenarios.
Frame compensation function
Display compensation is added to the seam area of splicing units to effectively reduce the picture fault and enhance the sense of picture continuity on the spliced screen.
Easy-to-operate client control software
With the upper computer software independently developed for this product, users can control form the PC to achieve the combination and decomposition of splicing matrix units and control the serial port commands for on/off status feedback, which is easy, convenient, practical and efficient.
Specification:
Size: 55"
Backlight category LED
Bare dimension（mm） 1210.51×121.1×681.22
Power consumption ≤180W
Operating voltage 100V-240VAC,50/60Hz
Optimum resolution 1920×1080@60Hz
Viewing angel 178º, 178º
Brightness 500cd/m² /700cd/m²
Contrast ratio 1400:1
Response time 8ms
Color 1.07B
Joint 0.88mm
Shell material Sheet metal
Power 150W
Surface temperature ≤45℃
Video wall controller adopts VK-S controller
VK-S Series video wall controller is new generation professional video image processing product which is based on the development of multi-windows, ultra-high definition and visual display control technology. Compare to other video wall controller in the market, VK-S series has upgraded its system capacity and use 10G base exchange processing chip, so that there is a significant advantage on the processing speed and professional display control. Meanwhile, VK-S series controller supports multiple services, density of I/O interfaces and long term reliability. It is an all-in-one product which has 4K@30Hz input processing, IP-Video Decoding, Content preview, Scrolling text, Scene management, Log management, User management and other advanced applications to meet a variety of professional system application requirements.
