ip camera system
10.06.2014., utorak
security and surveillance systems have security measures
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To network video server as the core of the third generation fully digital video remote ip camera surveillance camera centralized monitoring system Third-generation all-digital remote video monitoring system based on centralized network-based, digital video processing technology as the core, utilization photoelectric sensors, digital image processing, embedded computer systems, data transmission network, automatic control and artificial intelligence techniques a new digital surveillance mode, which not only has a second-generation digital video surveillance quasi-model computers with fast processing power, anti-interference ability of digital information for quick query records, video, image clarity and stand-alone display multiple images, etc., And relying network camera ip camera system on the network, the real play to the advantages of broadband networks, monitoring targets anywhere over an IP network, the monitoring center and the network can reach combined into a system that truly adapted to the needs of remote video monitoring system, real-time, centralized, and its core technology is the network video server product. As security awareness, video surveillance systems are slowly into our homes. Video surveillance program is endless, then install monitoring systems need to comply with the principles and what it must first consider installing surveillance systems to monitor the installation of the following eight major principles?: A real-time: real-time monitoring system, which is particularly important. It is due to the real-time NVR Recorder security systems security systems monitoring system so it seemed necessary. 2, security: security and surveillance systems have security measures to prevent unauthorized access and illegal operation of the system. 3 Scalability: monitoring system equipment is modular in structure, convenient and flexible system can be expanded in the hardware and software in the monitor size, monitor the object, or monitoring network security camera requirements are changed, that is, without changing the structure of the network and the main hardware and software equipment. |
05.06.2014., četvrtak
when choosing NVR is more need to carefully consider
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Applications and back-end management is currently NVR basic functionality is the most important feature, so everyone in the choice ofip camera surveillance camera products, for both functional surface to focus on. Currently NVR remote management is mainly based NVR built-in Web server , or to watch , record, playback and other basic operations by opening a remote client software, and remote management equipment and systems , alarm linkage and other operations. The admin can be centrally managed operations on the front and back office applications NVR devices through multiple systems management platform , and background data of remote backup , hierarchical management. The so-called "decentralized control, centralized management ," the monitoring of the truth , I believe that is sufficient to meet the NVR and implementation , so they need special attention in the selection . Hardware and software features In the selection , NVR software and hardware features is a rather important aspect when choosing its software can note whether they have the following characteristics : for example, whether to ip camera system NVR Recorder plug and play and requires no setup, support intelligent retrieval queries , support for 3GPP mobile video surveillance services , security systems ip camera system support for multiple alarm linkage , remote data backup , and so regular automatic . These feature-rich while at the same time , how truly simple, user-friendly, reliable and stable is the most critical. And when it comes to hardware features, such as whether to support PoE power supply , whether as a front-end IP Camera PoE power supply and data transmission directly , is not such as construction becomes more convenient . In addition , the availability of support for VGA, analog video output , with or without supporting data stored outside the expansion and so on. For a long period a large number of points and storage project demands, projects and users when choosing NVR is more need to carefully consider . Then he DVR 's relative shortcomings in what areas? 1 affected network systems and bandwidth , bandwidth-intensive , greater impact on network systems . 2 According to practical experience , affected by the network , the delay is severe, the more high-definition , the greater the bandwidth , the higher the system requirements for the entire network , which is contrary to the independence of the security system . 3 is not independent, fully influenced by the web . Once the network is paralyzed ,surveillance camera security systems then paralysis. Safe City is by building a citywide integrated, multi-functional, comprehensive security control networknetwork camera NVR Recorder , helping police department more efficient and more precise control and combat crime , to ensure harmony and stable development of the urban environment. HD video surveillance as a safe city with an important part of a typical cross-regional , cross-industry , cross- application characteristics . Geographically, the entire system involving the Police Station , county Public Security Bureau ( Bureau ) and the Municipal Public Security Bureau three monitoring center networking. At the industry level , the public security monitoring resources covering many internal and external scenarios , including roads, security mount , an important unit , key parts ,security camera security camera system public places and fire , schools, communities , hotels , banks, factories, mines and other industries . In the application, to complete network camera security camera system surveillance system , video playback , intelligent identification, alarm linkage , and other functions. |
04.06.2014., srijeda
security camera system
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NVR products are mainly divided into two categories : one is based on the so-called SOC hardware-based embedded system products, general OS is Linux. Anotherip ip camera surveillance camera is an industrial grade computer system products , OS will give WINCE, LINUX choice. The latter advantage is based on replacing the CPU speed, short development cycle, corresponding to the development of technical requirements is not high, supports a variety of video compression. The disadvantage is that the stability of reliability than the SOC NVR to almost, because such NVR is used to extract the soft way , and therefore can not support the full real-time applications are more large ones . However , the former is the SOC 's NVR products have their advantages and disadvantages: advantages is its stability, high reliability , the device application consumption ( power consumption ) has obvious advantages, more suitable for application in a variety of different applications , and low cost of the product . SOC 's current road NVR mostly 32,64 or more large ones , can achieve 25FPS full-time . The disadvantage is that hardware changes difficult ( easy to replace the platform and CPU), a long development cycle. But on the security systems ip camera system product development trend, mainly NVR will be for the development of SOC . For now, we can be chosen according to different needs . For example, in accessip camera system NVR Recorder management applications ones are few, you can consider using the former type of NVR. If you want to be able to access the larger ones , you can opt for the latter . Support the front-end hardware diversity Users generally considered NVR should only compatible network cameras, or support only one brand of network cameras. In fact, not at all , and some brands of NVR in addition to the current support their brand , but also the support of other more well-known brands, so that surveillance camera security systems regardless of the agent , or engineering providers and users, in the selection of NVR and IP Camera with a range of applications on a broader , and thus can be selected according to the different needs and environments. This video surveillance in the current conversion of analog to digital transition , if the mixed analog and digital front-end use , NVR really help this busy. Some brands of products on the basis of supporting IP Camera also supports analog video access, in its local codec , so the number of mixed -mode approach is bound to be one of the most popular network camera NVR Recorder and most rapid manner acceptable . By the way network camera security camera system while also slowly into the all-digital network monitoring . Under the characteristics of such products can offer different options for everyone . |
NVR recorder and DVR will coexist for a long last two years
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ASIC that Application Specified IC, that is specifically ip camera surveillance camera tailored for the application purpose integrated circuits, therefore , based on DVR video ASIC more compact structure , the performance will be improved. However, due to the structure of ASIC often need to refer to the new algorithm successfully transplanted on DSP , therefore , for the same compression format ( such as H.264) DVR 's available time , the ASIC-based DVR usually late in DSP-based the DVR. Network DVR NVR is currently in China is still in its initial concept to confirm trial promotion stage. In fact, I can place NVR DVR can be used, there are some differences in the actual application , network facilities to improve the place with NVR more, had no network rollout , inconvenient to use NVR. DVR in the vast majority of applications where analog cameras , the resolution is less than or equal to D1. NVR is mainly used in the field of distributed storage networks , IP cameras and high-resolution occasions ( megapixels ) . In the long run , NVR will be more advantages than the DVR , reflected in the ability to make full use of network resources , deployment simplicity and flexibility of the system , you can expect superior performance , reflecting aspects such as intelligence . It is the initial stage of NVR from technology products is not insurmountable difficulties, but because of the high maturity DVR application , and also to the primary direction of the development of the network , for example, appear DVR / NVR products , NVR standardization has not been completed and other reasons , NVR security systems ip camera system as well as to become a mainstream alternative to the difficulty , NVR and DVR will coexist for a long last two years . 5 Applications Editor security camera system Video surveillance systems development for decades, in recent years, traditional analog systems to digital at a rapid pace , network evolution and intelligent monitoring systems . Surveillance video recording devices are also the first generation of tape recorders, the second generation of Digital Video Recorder (DVR), a third -generation hybrid Digital Video Recorder (H-DVR) gradually over to the fourth generation is now the hottest Network DVR (NVR). DVR access to analog video signals into digital video data and video storage , video data is easy to store , supports random queries, easy to copy , easy operation and maintenance , etc. , favored by the users ; H-DVR DVR inherited advantage , while increasing network video access and remote network management capabilities, but still is an analog video surveillance system to a fully networked digital video surveillance system to promote the product . Network DVR NVR rid of the H-DVR embarrassing situation , accelerated networking, high-definition and process platform video surveillance system . Since no direct access to network camera NVR Recorder analog video signal from the video signal fundamentally avoided by the internal components of electromagnetic signals affect image quality surroundings and equipment , while the center and front-end device deployment location is no longer limited by the cable length. Oznake: NVR recorder |
Previously introduced PC-based ip camera dvr
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Previously introduced PC-based ip camera DVR card without departing from the PC system : PC appearance, the architecture of the PC , PC operating systems , PC interface, ...... . Thus it can be considered an extension of a PC application , as long as the exit DVR application (or the application into the background ) , this DVR is a standard PC , the user can easily in MS Office environment document editing , reports, statistics and other operations, ...... . However , because of this , DVR this structure can easily be led invasion of viruses and system failures ; may also be due to hardware compatibility issues or because of some BUG system software , which results in system downtime ; worse, may even be due to system managers own problems ( for example, operating personnel will be placed in the video program running in the background while in the foreground playing games ) and because some mistakenly set , misuse resulting video system unusable. In order from the PC system, a business launched a quasi DVR . But in essence , this DVR does not really from the PC system , because it still uses a PC 's hardware configuration : CPU surveillance camera security systems and motherboard in addition to other peripheral devices , also integrates graphics , sound card , network card , there used to plug PCI video capture card expansion slot , the power section is also used power switching power supply with a fan . However, in order to make it appear in the form of specialized equipment for monitoring the market , the machine adopts the overall design. Based DVR PC compared with the preceding , this quasi- embedded DVR PC full use of hardware resources , and to effectively take account of the overall spatial layout of the machine is more compact , but also effectively reduce the volume dedicated to achieve control the hard disk recording system . Equator has introduced high-speed broadband DSP chips , also known as MAP-CA Broadband Signal Processor (BSP, Broadband Signal Processor), which can operate at high speed clock of 300MHz , the processing capacity of 30 GOPS (Giga Operations Per Second, that every 30 billion times a second integer arithmetic ) , equivalent to approximately 6.4 times the processing speed of the Pentium III , mainly for high-performance, large amounts of data broadband video applications, such as embedded DVR (DVR), embedded network video server (DVS) as well as digital set-top boxes , digital TVs, video conferencing systems, medical imaging products. Here , MAP-CA is Equator's MAP series of very long instruction word VLIW (Very Long Instruction Word) processor in one of its latest MAP-BSP-15 to further increase the operating frequency of 400MHz, so the data processing capacity of 40GOPS ( video encoding ) . MAP-CA consists mainly of a very long instruction word processor core , a programmable bit-stream coprocessor (The VLx), video filtering coprocessor , the display refresh controller and rich digital I / O interfaces. MAP-CA supports a variety of software to achieve video compression and decompression of image and signal compression algorithms such software is relatively hardware implementation has great advantages , very easy to upgrade . ADI's ADSP-BF5xx Seriesip camera system network camera ADI's ADSP-BF5xx processor is developed on the basis of its Blackfin family of processors on . Multiple functional blocks which Blackfin family of processors cores can support 8/16/32 bit integer data and 16 / 32 fractional data , in particular the four 8-bit video arithmetic logic unit (ALU) can be addressed include MPEG-2, a number of multimedia algorithms , including JPEG and MPEG-4 , so that a processor can process audio, video , imaging, and data information . The Blackfin series of upgrade products ADSP-BF533, ADSP-BF532 and ADSP-BF531 Blackfin series not only inherits the advantages of the product is easy to use and code-compatible , but also significantly improves performance and reduces power consumption. These three new pin-compatible processors , the difference is only a difference in its performance and capacity on-chip memory , the NVR Recorder security camera system is easy to upgrade the performance of new product development and reduce many of the risks . Oznake: ip camera |
