Analysis of the application of HD IP Camera from the market point of view

Analysis of the application of HD IP Camera from the market point of view
First, the development of new network technologies megapixels high-definition transmission to provide bandwidth guarantee:
Safe city, the financial network monitoring projects have adopted self-built fiber-optic network or local area network 1000M bandwidth networks. This Gigabit bandwidth resources, installed in the front end of the 200 Road 720P megapixels real-time high-definition cameras (per recording occupancy 3Mbps), 200 total occupied bandwidth resources 60% to 80% (the actual project impossible 720P simultaneously decode on the wall, involving decoding on the wall cost, multi-purpose CIF format decoding by 50% to 100% of the points on the wall or 1/5 to 1/3 Points decoding on the wall), Gigabit Ethernet can effectively support . Network HD applications, multi-million-pixel high-definition camera installed in the critical areas of monitoring points, other monitoring points using standards-based H.264 compression algorithm FullD1 standard definition Network Cameras or traditional analog + encoder mode access. Such as bank vaults, important traffic junctions bayonet or door, accidents or cases of multiple lots can be configured million-pixel HD IP Camera, so that the key channel, key sites of the situation on has adjustable take high-definition images.
Megapixels HD and SD hybrid network, which not only saves the cost of equipment, which can effectively save network bandwidth resources, and the two can be the perfect combination of practicality and economy of the system to fully meet user demand for cost-effective. (Note: The substance of a Gigabit Fibre stable operation bandwidth will probably 400M, is too high, such as 500M, 600M will easily lead to network failure, the 200-720P to the back-end core switch bandwidth up to 650M-800m, said here Gigabit Ethernet can carry the actual 2-10 Gigabit to a core switch carrying the actual project was not in the 200 720P only one gigabit fiber technology, engineers can not design so transmission when the 200 way switch to 1080p video bandwidth press the 5M or high standards 6M calculation of each channel, the entire bandwidth of the transmission network design is almost double the cost is almost doubled, which is now market on 1080P screamed loud, but the actual project only government investment security monitoring, particularly roads, illegal capture this with profit nature of the project with a wide biggest reason.
As for public transport, megapixels HD IP Camera supports dual-stream technology, such as support for 1080P +720 P + D1 + CIF full real-time dual-stream, which can be used in the local 720P \ 1080P HD applications, remote places D1 + CIF for remote user calls. That is, although the current ADSL WAN technologies megapixels HD Network Camera is not yet large-scale support, dual-stream technology to meet both local and remote users different needs.
Many new technologies to ensure video HD
Second, the development of mass storage technology, storage is no longer megapixels HD bottleneck:
Described before, standards-based H.264 compression technology, HD IP Camera, all the way 720P HD full real-time image stream is 3Mbps, the need of the hour video storage space is about 1.35G (if 1080p video normally 5Mbps calculation, the need of the hour 2.25g); Typically, users tend to ask: megapixels a camera need so much storage space, more support megapixels How terrible? Essentially a million-pixel high-definition camera can replace multiple ordinary camera. The image quality of high-resolution video storage will become more valuable (security-monitoring system, play a role in the final 90% are relying on high-definition video playback).
For high-definition image recording of high-definition Network Camera network storage system (including storage servers and storage devices). The main connection of storage servers and storage devices DAS direct way, NAS network hard way, the SAN (FCSAN IPSAN) storage area network, which IPSAN way IP-based Ethernet transmission with good scalability, sharing and lower the cost of sharing applications, is one of the main technologies used in large and medium-sized centralized monitoring storage. On the other hand, IT on mainstream data hard disk capacity has more TB 2TB of data hard disk prices have civilians (calculated according to the amount of data per hour 1.35G 1TB (actual available data about 920G) hard disk can store about 720P camera recording of video images 680 hours or 680 hours of data).
Third, the liquid crystal display to become the new darling of the high-definition video surveillance:
HD surveillance industry does not have its own standards, so the main high-definition IP Camera manufacturers with reference to radio and television HDTV technical standards. Internationally recognized there are two: the standard on high-definition video vertical resolution of 720p or 1080i; the video condone ratio of 16:9. In the past few years, driven by the consumer electronics market, coupled with the CRT TV transition to LCD and plasma TV screen, HDTV has made a great success. Currently on the market mainstream LCD Monitor Size 21.5 ", 24", resolution up to 1920 × 1080, point-to-point compatible with the 16:9 format 720P and 1080P Full HD video display. The mainstream LCD TV size 42 ", also 1080P HD standard display size. These LCD monitors and LCD TVs with YPbPr, HDMI high-definition interface, in line with the requirements of high-definition Network Camera video display response time for users of concern to the liquid crystal display , the panel of some mainstream manufacturers can achieve 5ms, 2ms, or even higher 25fps to 30fps image refresh completely sufficient to meet demand.
The good news is, security high-definition LCD monitor, followed by rapid development. DID LCD liquid crystal display with ultra-thin, low power consumption, high contrast, flicker-free, low-cost advantages to promote its application in the field of security monitoring, especially some large-scale projects generally command center video wall adopted. Thus, high-definition video surveillance in the display has not bottlenecks.
Fourth, the standard H.264 compression technology to enhance video management center platform compatibility:
The majority of domestic surveillance market monitoring platform systems are based on traditional DVR and NVS (or the DVS) infrastructure. Many people think that these platforms to be compatible megapixels of image management takes a huge overhead. Actual fact, HD or not just the amount of data and image decoding capabilities put forward higher requirements, affect more front-end codec devices, network bandwidth, and storage devices. In a sense, the platform is the ability to support high-definition platform architecture, the better the system architecture, the smaller the cost spent on new products access. In addition, some of the IP camera manufacturer supporting the provision of high-definition video surveillance management platform.
Mainstream at this stage compression technology standard H.264 compression algorithm, the use of such algorithms is not only better quality, lower stream, more important is the standard H.264 format video files can use standard decoder decodes the playback ( : STORM, VLC, MPC, KMPlayer), versatility and compatibility of the equipment has greatly improved. In a certain sense, the standard H.264 solve troubled video data files compatibility issues for the entire security sector.
Users are generally concerned about high-definition video image decoding capability, ordinary dual-core PC, which can decode the 4-way 720p (30fps, of 3Mbps code stream) or 1080P (30fps 6Mbps stream). Now mainstream IP Network Camera manufacturers supporting 1080P, 720P, FullD1 fully compatible hardware decoder in order to achieve high-definition video decoder output management center platform control. In addition, the mainstream IP camera manufacturer latest technology can take advantage of the graphics hardware decoding the core decoding multi-channel high-definition live video on a PC display.
From:http://www.vstarcam.com/channel/Analysis-of-the-application-of-HD-IP-Camera-from-the-market-point-of-view-100.html

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