An important part of the IP Camera
Webcams mainly consists of two parts: the camera function related components (lenses, filters, image sensors) and related parts and computer functions (video encoders, network servers, external alarm and control interface). Wherein the components associated with the camera function for capturing an image (of different wavelengths of light) and converts it to an electrical signal. In fact, these signals or analog signals, they are further converted to digital signals and transmission components associated computer functions given by these parts are compressed and transmitted through the network out.
1 camera lens
HD IP Camera lens as the front end components, a fixed aperture, auto iris, auto zoom, auto zoom and other types of analog cameras with the same.
2 filter
Filter, scientific optical low-pass filter, the main function of the filter is as follows:
1) filter Infrared: Infrared color CCD sensor DSP will lead to the correct color image can not be calculated, leading to color color distortion, color distortion in order to ensure the camera, so must add a filter, the light in the infrared part of the filter.
2) Dressing Light: Camera CCD is a dolphin photoreceptor (CELL) constitutes, for fear of interference to neighboring photoreceptor, so you need to be corrected for the incident, leaving only incident of direct light. Camera filters commonly used quartz plate, quartz with physical polarization characteristics of quartz can retain part of the incident light and direct oblique incident light reflected off part, so you can avoid the side effects of oblique incident light sensitive point.
3 image sensor and sound sensor
CMOS and CCD image sensor has two modes.
CMOS image sensors can neither complementary metal oxide semiconductor, CMOS is the use of silicon and germanium these two elements made of a semiconductor, a negative charge by the CMOS transistors and the positively charged to achieve the basic functions. Effect of these two complementary current generated chips can be processed into an image recording and interpretation. The main advantage for CCD CMOS is very low power, CMOS image sensor power consumption of only ordinary CCD, 1/3, CMOS important issue is dealing with rapidly changing images, since the current transformation too frequent overheating. Dark current suppression good on a big problem, if suppression is very prone to bad noise.
CCD image sensor in a silicon substrate by a two-dimensionally arranged in the photodiode and the transmission circuit. The photodiode of the light into electric charge, and then the conversion circuit and the output transmission.
Normally, the delivery excellent image quality CCD image sensor devices are used, and focus on power consumption and cost of products select CMOS image sensors. But the new technology is to overcome the inherent weaknesses of each device body, while retaining the specific purpose for certain characteristics. This part of the same with analog cameras.
Sound sensors that pick up the sound or call microphone, the same principles with traditional microphone.
4. A / D converter
A / D converter function is to image and sound and other analog signals are converted into digital signals.
5 images, audio coder
The A / D converted image, audio digital signal format or according to a certain standard encoding. The purpose of encoding is to facilitate the realization of audio / video signal and the digital multimedia signal; facilitate the computer systems, networks, and the World Wide Web to transmit the signal without distortion.
Currently, the image coding compression technology has two: one is hardware encoding compression, coding compression algorithm will solidify on the chip; another one is based on the DSP software coding compression software that runs on the DSP for image compression coding. Similarly, we can use voice compression coding hardware compression and software compression, encoding standards such as MP3 format.
6.Controller
Controller is the heart of high-definition Network Camera, its role is to manage and control network camera work. If the hardware compression, the controller is a separate component; if a software encoding, encoding controller that is running the software DSP, that combine the two.
7 web server
Web server provides IP Camera network function, it uses RTP / RTCP, UDP, HTTP, TCP / IP and other related network protocols, allowing users from their PC using a standard browser HD Network Camerabased on the IP address of the network camera to access, view live images and control the camera's lens and head.
8 external alarm, the control interface
Network Camera for engineering applications provide a practical external interface, such as control PTZ 485 interface for alarm signal input and output I / O port. If found to have infrared probe target appears, send an alarm signal to the network cameras, network cameras automatically adjust the camera direction and real-time video; On the other hand, when the IP Camera detects a moving object appears, also sent out an alarm signal.
Welcome to the P2P IP Camera manufacturerVStarcam website: http://www.vstarcam.com for more information!
2013年7月8日星期一
Go into large-scale application of high-definition IP Camera
Go into large-scale application of high-definition IP Camera
Domestic network video surveillance market is still no scale, facing a huge market, all kinds of camera products allow buyers dazzling, most users still on the sidelines. In some already built or under construction network monitoring system, the actual use of the process, there are still many technical and non-technical factors obstacle, so in the promotion and application, network cameras, still faces many challenges and obstacles. This paper discusses the application of network cameras scale factors.
Scale application of factors
As a network video monitoring system in the core equipment, application and popularization of network cameras network video surveillance represent the extent and stage of development. Needless to say, the IP Camera is gradually adapting to the diverse needs of current and future, will become the mainstream of video surveillance products. But for most users, network camera, its performance, stability and fusion, but also a clear and thorough understanding enough, the lack of in-depth, systematic analysis and research. Therefore, decisions, often have more concerns and doubts that dare to try, which is also largely affected the network cameras and network monitoring systems and a wide range of universal application.
With businesses to promote the Network Camera products actually encountered in the course of the many feedback, network cameras can basically scale promotion of the application of customary factors summarized as the core technology, network transmission, procurement costs, application value, resource integration and other six aspects.
1, the application of customary
First, the user concept has been formed from a kind of inertia, that the current market liquidity large, wide application, long survival time video surveillance products is the best choice, therefore, is still dominant market share of the DVR analog cameras became the most preferred customer or contractor. Although the number of bidding process, will absorb some of the network camera products in them, but often a combination of analog cameras with DVR program wins as a result. This network camera's view of this new generation of products, it will be in the invisible into a misunderstanding, the user will think of new technologies, new products will certainly be premature, prone to problems, such as the imposition of performance instability, system installation complexity by the external environment impact, operating difficult to master, and so shortcomings.
Visible changing concepts is constraining the development of network video surveillance fundamental factor, only look at new things change this concept in order to make faster and more comprehensive network cameras are understood and recognized, and play its due advantage. Of course, there are some industrial users, such as high Internet penetration, IT applications leading education, healthcare industry customers concerned, from system design, deployment, to the application, Web-based IP Camera monitoring system have been pleased to be selected, and also from the willingness to put in capital and other costs, this is a very good start, is bound to the popularity of network cameras have an important impact.
2, the core technology
Although domestic network video surveillance products can be said to contending, but most security vendors do not own the core technology, especially video and audio development, monitoring and management software development and image processing technology, still in the "ism" and "Zanji" A low level of technology. Such a unified standard and not really close to the domestic market demand, technological atmosphere, give security contractors and integrators to increase quite a lot of unnecessary trouble, often for a network video surveillance system solution, to find a variety of monitoring equipment manufacturers, patchwork, but also to integrate design, not only a waste of time and energy, but also increases the cost of procurement of technology and products, which can not really be achieved with international brands confrontation and competition, not to mention a station style system of solutions and services. In addition, the core of the network camera video compression technology itself, its development is constantly updated, so did not reach a mature stage.
Currently, HD IP Camera is widely used in image compression technology M-JPEG/MPEG-4/H.264 three ways, H.264 can get the highest compression ratio, the processing platform for the camera itself the highest demands. In order to obtain a higher resolution and achieve full real-time transmission, the mainstream manufacturers are using H.264 compression algorithm to achieve low bandwidth applications, but the actual effect can not let the user satisfaction, and due to technical and chip inputs and upgrades , also simultaneously increases the cost of the network camera.
3, the network transmission
Interactive network camera signals must be dependent on the network, but the lack of a domestic or a very good network environment, which is a very objective and realistic problems. Network video monitoring system, by definition is universal network video surveillance system deployment and application implementation. Network environment is the foundation of the network video monitoring system of the carrier, a good network environment in order to smooth network video and real-time provides a good protection. Digital video transmission need to occupy a larger network bandwidth resources in the LAN, the network environment, which can reach hundreds of megabytes access, Gigabit aggregation level, with the corresponding network transmission quality assurance measures, network bandwidth is fully security, network video surveillance system can also be fully demonstrate its features; however, network monitoring need to meet a wider range, more branches, more areas of application requirements, which requires network video needs to be transmitted in a WAN environment. While the domestic network status is very people can not let go, whether it is green, ADSL, CDMA, 3G, etc., have very limited bandwidth, and the actual and theoretical values vary greatly, compared with developed countries, China's so-called broadband, the vast Most also can only be defined as narrowband, digital video transmission will be faced with the dilemma of narrow roads and vehicles, resulting in the screen quality, screen interruption, delay too long, and so on. Therefore, there is a good network resources, will restrict the effect of network video surveillance system, it can not reflect the advantages of network video surveillance system.
4, the construction cost
Users for network camera, network video surveillance system construction costs have deep misconception that high price of network cameras and network video surveillance system, compared with, DVR systems, the cost is much lower. Admittedly, DVR device universal price situation being experienced, and rolled into the encoding and storage characteristics, but also many small and medium, lower project monitoring requirements to maintain the absolute cost advantage. However, as users demand gradually to the network, high-definition, intelligent, centralized management, systems integration direction, DVR systems are essentially already appeared to be inadequate. In fact, we have analyzed from another perspective, P2P IP Camera in function, has both analog cameras, DVR functions encoded with analog camera in price has not comparable.
If network video surveillance system construction costs, including hardware costs, implementation costs for analysis and accounting, to meet the needs of high-end applications in the premise, network video surveillance system construction cost is usually fairly basic system with DVR. But the reality point of view, many users already have the DVR system in use, if you want to carry out a system-wide network transformation, a lot of monitoring equipment will be dropped, does cause a huge waste of the original investment, it is difficult for users to accept and, therefore, the advantages of Network Camera although obvious, but in the actual product procurement and system construction, it is also necessary to protect the user as much as possible the original investment.
5, the application of value
Currently, the market in megapixels network camera for the mainstream, a lot of international and domestic manufacturers have introduced a full line of HD IP Camera products, and some manufacturers have been based on 3,000,000, 5,000,000 pixel network cameras. But HD network monitoring in the country, is not also correspondingly applied to various industries and fields, or a real problem. Such as low-light high-definition video processing, noise processing, the camera's internal ISP and SOC processing performance requirements are high, for more complex control environment at night less effective, and in fact the level of security at night than during the day should be higher, For bank ATM machines and other areas with a high level of monitoring is still a bottleneck.
While on the road monitoring, megapixels network camera for high-speed vehicles need to capture, in real-time control personnel facial features and details of the vehicle, for bayonet fill light, flash, exposure time, stream mode conversion, etc., the actual Applications are also not mature. Thus, the IP Camera products, in essence, there are still some really flawed, but not in some of the high demand, high level of security within the industry universal application. Also, users generally more accustomed to the full real-time video transmission, and the actual monitoring process, especially in the financial, energy, manufacturing enterprises, but also for demanding real-time monitoring. Coupled with the current needs of many wireless video transmission, network cameras can not achieve high image quality and smooth delicate complex requirements of video effects, delay problem is serious, can not meet the requirements of real-time high places. Therefore, the network video surveillance industry technology can solve the problem to see clearly, but in practice, there is also the practical application of various technical problems to be solved.
6, resource integration
As the trend of more and more IP surveillance vendors, channels, accepted by users, network camera surveillance products as a new trend, so that more manufacturers to join in the IP market. However, the complicated network camera technology also allows the industry chain cooperation between the manufacturers more closely. Lens, sensors, compression processing chip, three are indispensable, must through close cooperation, to improve compatibility with each other, understand each other characteristics and limitations in order to get a better image quality.
The video compression part, dependent on the chip makers and camera manufacturers in close collaboration with a software program to adjust and continually optimized in the details necessary for both sides closer cooperation. Chip makers face the issues raised by camera manufacturers, whether rapid response ability to solve problems in the network camera, especially megapixels era will become more prominent. And network monitoring system openness and integration features, also produced a more unified management and linkage alarm needs, its core is the management platform and multi-vendor IP Camera product compatibility integration, which requires network cameras manufacturers and platform vendors joined forces, together with complete network video surveillance project overall construction. At the same time, we must also soberly aware that video surveillance systems are also engaged in a technical standard of the dispute.
Closed with analog video surveillance systems, digital video surveillance system products and product systems to achieve compatibility between It has become severe in practical engineering problems. Different technical standards, will cause the device to search for real-time video, audio, metadata and control information on the interaction difficulties, therefore, the discussion on increasing the standard, the standard setter, can guide even control the entire industry, This is the most lucrative part, for which, ONVIF, PSIA two standards organizations are competing with each other, who the winner is still unknown.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.com more information!
Domestic network video surveillance market is still no scale, facing a huge market, all kinds of camera products allow buyers dazzling, most users still on the sidelines. In some already built or under construction network monitoring system, the actual use of the process, there are still many technical and non-technical factors obstacle, so in the promotion and application, network cameras, still faces many challenges and obstacles. This paper discusses the application of network cameras scale factors.
Scale application of factors
As a network video monitoring system in the core equipment, application and popularization of network cameras network video surveillance represent the extent and stage of development. Needless to say, the IP Camera is gradually adapting to the diverse needs of current and future, will become the mainstream of video surveillance products. But for most users, network camera, its performance, stability and fusion, but also a clear and thorough understanding enough, the lack of in-depth, systematic analysis and research. Therefore, decisions, often have more concerns and doubts that dare to try, which is also largely affected the network cameras and network monitoring systems and a wide range of universal application.
With businesses to promote the Network Camera products actually encountered in the course of the many feedback, network cameras can basically scale promotion of the application of customary factors summarized as the core technology, network transmission, procurement costs, application value, resource integration and other six aspects.
1, the application of customary
First, the user concept has been formed from a kind of inertia, that the current market liquidity large, wide application, long survival time video surveillance products is the best choice, therefore, is still dominant market share of the DVR analog cameras became the most preferred customer or contractor. Although the number of bidding process, will absorb some of the network camera products in them, but often a combination of analog cameras with DVR program wins as a result. This network camera's view of this new generation of products, it will be in the invisible into a misunderstanding, the user will think of new technologies, new products will certainly be premature, prone to problems, such as the imposition of performance instability, system installation complexity by the external environment impact, operating difficult to master, and so shortcomings.
Visible changing concepts is constraining the development of network video surveillance fundamental factor, only look at new things change this concept in order to make faster and more comprehensive network cameras are understood and recognized, and play its due advantage. Of course, there are some industrial users, such as high Internet penetration, IT applications leading education, healthcare industry customers concerned, from system design, deployment, to the application, Web-based IP Camera monitoring system have been pleased to be selected, and also from the willingness to put in capital and other costs, this is a very good start, is bound to the popularity of network cameras have an important impact.
2, the core technology
Although domestic network video surveillance products can be said to contending, but most security vendors do not own the core technology, especially video and audio development, monitoring and management software development and image processing technology, still in the "ism" and "Zanji" A low level of technology. Such a unified standard and not really close to the domestic market demand, technological atmosphere, give security contractors and integrators to increase quite a lot of unnecessary trouble, often for a network video surveillance system solution, to find a variety of monitoring equipment manufacturers, patchwork, but also to integrate design, not only a waste of time and energy, but also increases the cost of procurement of technology and products, which can not really be achieved with international brands confrontation and competition, not to mention a station style system of solutions and services. In addition, the core of the network camera video compression technology itself, its development is constantly updated, so did not reach a mature stage.
Currently, HD IP Camera is widely used in image compression technology M-JPEG/MPEG-4/H.264 three ways, H.264 can get the highest compression ratio, the processing platform for the camera itself the highest demands. In order to obtain a higher resolution and achieve full real-time transmission, the mainstream manufacturers are using H.264 compression algorithm to achieve low bandwidth applications, but the actual effect can not let the user satisfaction, and due to technical and chip inputs and upgrades , also simultaneously increases the cost of the network camera.
3, the network transmission
Interactive network camera signals must be dependent on the network, but the lack of a domestic or a very good network environment, which is a very objective and realistic problems. Network video monitoring system, by definition is universal network video surveillance system deployment and application implementation. Network environment is the foundation of the network video monitoring system of the carrier, a good network environment in order to smooth network video and real-time provides a good protection. Digital video transmission need to occupy a larger network bandwidth resources in the LAN, the network environment, which can reach hundreds of megabytes access, Gigabit aggregation level, with the corresponding network transmission quality assurance measures, network bandwidth is fully security, network video surveillance system can also be fully demonstrate its features; however, network monitoring need to meet a wider range, more branches, more areas of application requirements, which requires network video needs to be transmitted in a WAN environment. While the domestic network status is very people can not let go, whether it is green, ADSL, CDMA, 3G, etc., have very limited bandwidth, and the actual and theoretical values vary greatly, compared with developed countries, China's so-called broadband, the vast Most also can only be defined as narrowband, digital video transmission will be faced with the dilemma of narrow roads and vehicles, resulting in the screen quality, screen interruption, delay too long, and so on. Therefore, there is a good network resources, will restrict the effect of network video surveillance system, it can not reflect the advantages of network video surveillance system.
4, the construction cost
Users for network camera, network video surveillance system construction costs have deep misconception that high price of network cameras and network video surveillance system, compared with, DVR systems, the cost is much lower. Admittedly, DVR device universal price situation being experienced, and rolled into the encoding and storage characteristics, but also many small and medium, lower project monitoring requirements to maintain the absolute cost advantage. However, as users demand gradually to the network, high-definition, intelligent, centralized management, systems integration direction, DVR systems are essentially already appeared to be inadequate. In fact, we have analyzed from another perspective, P2P IP Camera in function, has both analog cameras, DVR functions encoded with analog camera in price has not comparable.
If network video surveillance system construction costs, including hardware costs, implementation costs for analysis and accounting, to meet the needs of high-end applications in the premise, network video surveillance system construction cost is usually fairly basic system with DVR. But the reality point of view, many users already have the DVR system in use, if you want to carry out a system-wide network transformation, a lot of monitoring equipment will be dropped, does cause a huge waste of the original investment, it is difficult for users to accept and, therefore, the advantages of Network Camera although obvious, but in the actual product procurement and system construction, it is also necessary to protect the user as much as possible the original investment.
5, the application of value
Currently, the market in megapixels network camera for the mainstream, a lot of international and domestic manufacturers have introduced a full line of HD IP Camera products, and some manufacturers have been based on 3,000,000, 5,000,000 pixel network cameras. But HD network monitoring in the country, is not also correspondingly applied to various industries and fields, or a real problem. Such as low-light high-definition video processing, noise processing, the camera's internal ISP and SOC processing performance requirements are high, for more complex control environment at night less effective, and in fact the level of security at night than during the day should be higher, For bank ATM machines and other areas with a high level of monitoring is still a bottleneck.
While on the road monitoring, megapixels network camera for high-speed vehicles need to capture, in real-time control personnel facial features and details of the vehicle, for bayonet fill light, flash, exposure time, stream mode conversion, etc., the actual Applications are also not mature. Thus, the IP Camera products, in essence, there are still some really flawed, but not in some of the high demand, high level of security within the industry universal application. Also, users generally more accustomed to the full real-time video transmission, and the actual monitoring process, especially in the financial, energy, manufacturing enterprises, but also for demanding real-time monitoring. Coupled with the current needs of many wireless video transmission, network cameras can not achieve high image quality and smooth delicate complex requirements of video effects, delay problem is serious, can not meet the requirements of real-time high places. Therefore, the network video surveillance industry technology can solve the problem to see clearly, but in practice, there is also the practical application of various technical problems to be solved.
6, resource integration
As the trend of more and more IP surveillance vendors, channels, accepted by users, network camera surveillance products as a new trend, so that more manufacturers to join in the IP market. However, the complicated network camera technology also allows the industry chain cooperation between the manufacturers more closely. Lens, sensors, compression processing chip, three are indispensable, must through close cooperation, to improve compatibility with each other, understand each other characteristics and limitations in order to get a better image quality.
The video compression part, dependent on the chip makers and camera manufacturers in close collaboration with a software program to adjust and continually optimized in the details necessary for both sides closer cooperation. Chip makers face the issues raised by camera manufacturers, whether rapid response ability to solve problems in the network camera, especially megapixels era will become more prominent. And network monitoring system openness and integration features, also produced a more unified management and linkage alarm needs, its core is the management platform and multi-vendor IP Camera product compatibility integration, which requires network cameras manufacturers and platform vendors joined forces, together with complete network video surveillance project overall construction. At the same time, we must also soberly aware that video surveillance systems are also engaged in a technical standard of the dispute.
Closed with analog video surveillance systems, digital video surveillance system products and product systems to achieve compatibility between It has become severe in practical engineering problems. Different technical standards, will cause the device to search for real-time video, audio, metadata and control information on the interaction difficulties, therefore, the discussion on increasing the standard, the standard setter, can guide even control the entire industry, This is the most lucrative part, for which, ONVIF, PSIA two standards organizations are competing with each other, who the winner is still unknown.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.com more information!
HD IP Camera surveillance should be applied in accordance with their own needs
HD IP Camera surveillance should be applied in accordance with their own needs
The high-definition monitor the technical challenges can be solved through the application. According to the current situation, the user should not blindly pursue high-definition. If all of the front-end control points use explosion-proof high-definition IP Camera, and all real-time high-definition transmission, then to the back-end storage and transmission will cause a lot of pressure, and cause the waste of cost and efficiency. Therefore, the design should be based on the needs of users right solution, such as design and installation of high-risk areas megapixels network camera, under normal circumstances, only the ordinary resolution (CIF, D1) to transmit real-time video image, while the alarm condition occurs when a high-pixel high-resolution images in JPEG format transmission, in order to enlarge afterwards, control details. This can greatly ease the pressure on the network, the storage pressure to reduce investment costs.
Now the current market popular Tri-streaming high-definition network camera, which respectively support JPEG/MPEG-4/H.264 three different video compression formats, depending on the actual need to match different options can also be set according to the actual situation of the customer these three streams. For example: the lower stream D1 H.264 video compression format image transmitted to the customer in real-time remote monitoring, while the megapixels H.264 video compression format incoming real-time image storage server for video, You can also transfer megapixels alarm when a JPEG image, easy to zoom afterwards confirmed, looking for suspicious objects.
In short, high-definition IP Camera surveillance will be monitoring the inevitable development of the road, it will be the end point. Manufacturers in the design of these high-definition network surveillance products, try to diversification, differentiation, allowing customers the choice of diversification, but also constitute the market competitiveness of their products; user through the different options, to achieve a more reasonable mix, resulting in a higher cost-effective for businesses and customers get better service and achieve win-win situation.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.com more information!
The high-definition monitor the technical challenges can be solved through the application. According to the current situation, the user should not blindly pursue high-definition. If all of the front-end control points use explosion-proof high-definition IP Camera, and all real-time high-definition transmission, then to the back-end storage and transmission will cause a lot of pressure, and cause the waste of cost and efficiency. Therefore, the design should be based on the needs of users right solution, such as design and installation of high-risk areas megapixels network camera, under normal circumstances, only the ordinary resolution (CIF, D1) to transmit real-time video image, while the alarm condition occurs when a high-pixel high-resolution images in JPEG format transmission, in order to enlarge afterwards, control details. This can greatly ease the pressure on the network, the storage pressure to reduce investment costs.
Now the current market popular Tri-streaming high-definition network camera, which respectively support JPEG/MPEG-4/H.264 three different video compression formats, depending on the actual need to match different options can also be set according to the actual situation of the customer these three streams. For example: the lower stream D1 H.264 video compression format image transmitted to the customer in real-time remote monitoring, while the megapixels H.264 video compression format incoming real-time image storage server for video, You can also transfer megapixels alarm when a JPEG image, easy to zoom afterwards confirmed, looking for suspicious objects.
In short, high-definition IP Camera surveillance will be monitoring the inevitable development of the road, it will be the end point. Manufacturers in the design of these high-definition network surveillance products, try to diversification, differentiation, allowing customers the choice of diversification, but also constitute the market competitiveness of their products; user through the different options, to achieve a more reasonable mix, resulting in a higher cost-effective for businesses and customers get better service and achieve win-win situation.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.com more information!
2013年7月2日星期二
HD IP Camera immature market for three reasons
HD IP Camera immature market for three reasons
At present, from our point of view the whole security industry, high-definition network camera also failed to gain popularity scale, mainly in the following three reasons:
First, some standard definition network camera image effects not as good as analog cameras and high-definition network camera also vexing non-real-time, are also boosting the still massive selection of analog cameras and surveillance market firmly occupy the mainstream . However, with improvements in technology and user needs improvement, high definition has become security vendors continue to pursue the goal, 720P/1080P HD network cameras increasingly favored by the users. In some mainstream manufacturers, for example, last year the grand launch of a full range of one million high-definition cameras are to follow the standard H.264 algorithm, can achieve 1920 × 1080,1600 × 1200,1280 × 720 million full-time HD video support 1600 × 1200 multi-stream video output, can easily achieve high-definition monitor, can truly capture clear image detail, picture quality than conventional D1 promoted four times, so that the high-definition IP Camera applications has become more widespread, you can optimistic forecast in HD , network video surveillance trend, HD IP Camera will show the rapid development trend.
Secondly, with respect to the technology is very mature and traditional analog surveillance system already familiar with networking and commissioning for analog systems engineering personnel, it is relatively unfamiliar, or a little more difficult. As we all know, high-definition IP Camera is relying on the existence of the network, the network itself and the status of the application of high-definition network camera effects are closely related. Throughout the network environment based on the application of effects, such as network monitoring system is based on a network has been built, the original network infrastructure can meet monitoring requirements, needs to be considered; while the new network-based network monitoring system, Construction of the new network will be faced with greater investment environment, users may make large investments unbearable. In addition, access to high-definition network camera will be domain names, IP addresses and other problems, and network security issues are also the focus of the user, so that the joint effect of many problems have hampered the widespread application of high-definition network camera. But in network security, now Megapixel IP Camera have built-in VPN protocols of international norms, enabling seamless connectivity and network security devices can be safely connected to the internal LAN from the Internet, which greatly improves the audio and video security, to prevent the adoption of high-definition network camera cable intrusion internal network. In addition, the generally high-definition network camera also has a built-in UPNP protocol, plug and play, no need to change the firewall settings and other network security devices, but also reduces debugging difficult.
Finally, the cost of high-definition network camera is still high. Compared with analog cameras, as high-definition network camera market is not mature, and its price is high, so many industry users prohibitive. With China's domestic enterprises bigger security camera gradually mastered the core technology, domestic compression chip large-scale applications, many domestic security companies have introduced a wide variety of high-definition network camera. Some manufacturers even have a wireless HD network cameras, to provide users with more choice. This means that prices will inevitably have a more substantial downward adjustment, the current price of high-definition network cameras has become increasingly close to traditional analog cameras, so that more users can afford high-definition IP Camera.
HD network camera era is coming, will mass selection, monitoring and firmly occupy the mainstream market.
Welcome to the P2P IP Camera manufacturer in VStarcam website: http://www.vstarcam.cn more information!
At present, from our point of view the whole security industry, high-definition network camera also failed to gain popularity scale, mainly in the following three reasons:
First, some standard definition network camera image effects not as good as analog cameras and high-definition network camera also vexing non-real-time, are also boosting the still massive selection of analog cameras and surveillance market firmly occupy the mainstream . However, with improvements in technology and user needs improvement, high definition has become security vendors continue to pursue the goal, 720P/1080P HD network cameras increasingly favored by the users. In some mainstream manufacturers, for example, last year the grand launch of a full range of one million high-definition cameras are to follow the standard H.264 algorithm, can achieve 1920 × 1080,1600 × 1200,1280 × 720 million full-time HD video support 1600 × 1200 multi-stream video output, can easily achieve high-definition monitor, can truly capture clear image detail, picture quality than conventional D1 promoted four times, so that the high-definition IP Camera applications has become more widespread, you can optimistic forecast in HD , network video surveillance trend, HD IP Camera will show the rapid development trend.
Secondly, with respect to the technology is very mature and traditional analog surveillance system already familiar with networking and commissioning for analog systems engineering personnel, it is relatively unfamiliar, or a little more difficult. As we all know, high-definition IP Camera is relying on the existence of the network, the network itself and the status of the application of high-definition network camera effects are closely related. Throughout the network environment based on the application of effects, such as network monitoring system is based on a network has been built, the original network infrastructure can meet monitoring requirements, needs to be considered; while the new network-based network monitoring system, Construction of the new network will be faced with greater investment environment, users may make large investments unbearable. In addition, access to high-definition network camera will be domain names, IP addresses and other problems, and network security issues are also the focus of the user, so that the joint effect of many problems have hampered the widespread application of high-definition network camera. But in network security, now Megapixel IP Camera have built-in VPN protocols of international norms, enabling seamless connectivity and network security devices can be safely connected to the internal LAN from the Internet, which greatly improves the audio and video security, to prevent the adoption of high-definition network camera cable intrusion internal network. In addition, the generally high-definition network camera also has a built-in UPNP protocol, plug and play, no need to change the firewall settings and other network security devices, but also reduces debugging difficult.
Finally, the cost of high-definition network camera is still high. Compared with analog cameras, as high-definition network camera market is not mature, and its price is high, so many industry users prohibitive. With China's domestic enterprises bigger security camera gradually mastered the core technology, domestic compression chip large-scale applications, many domestic security companies have introduced a wide variety of high-definition network camera. Some manufacturers even have a wireless HD network cameras, to provide users with more choice. This means that prices will inevitably have a more substantial downward adjustment, the current price of high-definition network cameras has become increasingly close to traditional analog cameras, so that more users can afford high-definition IP Camera.
HD network camera era is coming, will mass selection, monitoring and firmly occupy the mainstream market.
Welcome to the P2P IP Camera manufacturer in VStarcam website: http://www.vstarcam.cn more information!
Home HD IP Camera technology advantages
Home HD IP Camera technology advantages
HD is the development trend of the times, in today's era of high-definition, high-definition IP Camera HD technology determines its direction of development, high-definition era, high-definition network camera technology advantages are the following:
A new generation of ultra-high-definition ip camera typical appearance
2 network, can people simultaneously online, watch free from time and place
3 voice and video digitization, clear picture quality and compression ratio, has been far beyond the traditional CCTV surveillance photography powerful picture quality, and can be integrated identification, tracking and other technology
4 video file management and storage easy, while offsite backup
5 easy to install, can be placed anywhere (wireless network transmission or PoE power) network infrastructure matures, the need for additional cabling costs, significantly reduce costs
6.P2P IP Camera, simple, plug and play, high expansion and integration,
7. System is stable, easy to update and upgrade
8 is widely used in people's livelihood, commercial and research purposes
9 combined with the 3G mobile phone, simply build mobile remote monitoring system
10 widescreen support HDT V output mode (16:9); coverage, the same monitoring area can replace the original cameras and a plurality of fixed-point omnidirectional camera.
Welcome to the home P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.cn Learn more
HD is the development trend of the times, in today's era of high-definition, high-definition IP Camera HD technology determines its direction of development, high-definition era, high-definition network camera technology advantages are the following:
A new generation of ultra-high-definition ip camera typical appearance
2 network, can people simultaneously online, watch free from time and place
3 voice and video digitization, clear picture quality and compression ratio, has been far beyond the traditional CCTV surveillance photography powerful picture quality, and can be integrated identification, tracking and other technology
4 video file management and storage easy, while offsite backup
5 easy to install, can be placed anywhere (wireless network transmission or PoE power) network infrastructure matures, the need for additional cabling costs, significantly reduce costs
6.P2P IP Camera, simple, plug and play, high expansion and integration,
7. System is stable, easy to update and upgrade
8 is widely used in people's livelihood, commercial and research purposes
9 combined with the 3G mobile phone, simply build mobile remote monitoring system
10 widescreen support HDT V output mode (16:9); coverage, the same monitoring area can replace the original cameras and a plurality of fixed-point omnidirectional camera.
Welcome to the home P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.cn Learn more
Five HD IP Camera common problems and solutions
Five HD IP Camera common problems and solutions
In the transmission and storage, systems integrators through cost inputs can be solved; displaying and managing HD manufacturers need to spend some effort to improve the underlying hardware and software;'s effect in improving night vision, investment is relatively small , and it is most likely to be able to allow the user satisfaction improvement solution.
Compared with standard-definition video surveillance, HD IP Camera surveillance advantages are clear, but through two years of marketing, will inevitably encounter the following types of questions:
1, the transmission
HD IP camera 720P or 1080P generally will choose a solution, if you want to achieve the desired image effect, we need 2 ~ 8M network bandwidth, if a system were to have a few hundred points, and that the flow of data across the network will be quite large , and the video stream is a real-time data streams, will continue to cause network-related switching equipment constant pressure, which requires adequate network planning in doing homework.
Solution: As the cable costs have been reduced, the local LAN can add high-performance fiber-optic switches to form high-speed network, Gigabit to the desktop is a very easy thing. With the popularity of broadband networks, especially this year, has just launched the "triple play", the rate of households have reached tens of megabytes to hundreds of megabytes, Copper light eventually brought us cheap high speed internet. For remote for high-definition video transmission is already not too long time.
2, storage
On a question referred to the problem of huge data flows, data aggregation to the center, or if each node is stored on the central inlet pressure of bandwidth and storage capacity is a major challenge.
Solution: currently only IPSAN and invested heavily on the storage medium to do, IPSAN best use of embedded architecture, much less plug boards, high stability, but the drawback is poor compatibility moment, less flexible secondary development . NVR products on the market are mostly based on X86 architecture, which is the server plus array card, install the application software, servers and disk arrays combo, compatibility is better. If you use IPSAN way, you need to use storage media enterprise-class hard drive, so as to play a IPSAN in the data storage speed and security benefits. For some small systems, does not require too long if you save time, while the data security requirements are not too high, can use the market mainstream server to complete the storage function.
3, the display of
Many HD manufacturers just focus on the front-end IP Camera pixels, without a corresponding development of high-definition video decoder, only around a PC screen to watch high-definition images, high-definition images can not be independent in the large displayed on the screen.
Solution: For high-definition screen TV wall, we have developed a high-definition decoder, the front-end transmission over the HD graphics for effective reduction connected to large screen high-definition input interface, high-definition picture perfect to show on the screen above.
4, management
Many manufacturers or according to the traditional definition of thinking to do analog cameras HD network camera, bought ready-made hardware solutions, using the MPEG4 standard algorithms provided by third parties, only provides a network interface for a simple look digitize the back platform as how to camera hardware, and data flow management, as he did those underlying core algorithms and technologies simply can not achieve.
Solution: try to select hardware interfaces with a rich front-end devices, such as alarms, SD card, intercom, audio, 485, etc., in a project scenario Party can request for flexible combinations, no longer need a separate additional customization function. Software should have a variety of access methods, such as WEB, client, a large platform that can provide the SDK can be very flexible, and third-party software for docking. Function modules to complete as much as possible, such as the police, streaming media, storage services, etc., can be directly used in the project.
5, the night side
In the case of day-lit, high-definition is very easy, once applied in low light or night surveillance when needed, HD became powerless it. Since most of the HD IP Cameras using CMOS sensor, which is less sensitive to light, if not with infrared light, in the night is dark, and we monitor most of the time period you want to prevent precisely at night, so will make the high expectations of high-definition video systems became a decoration.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.cn for more information.
In the transmission and storage, systems integrators through cost inputs can be solved; displaying and managing HD manufacturers need to spend some effort to improve the underlying hardware and software;'s effect in improving night vision, investment is relatively small , and it is most likely to be able to allow the user satisfaction improvement solution.
Compared with standard-definition video surveillance, HD IP Camera surveillance advantages are clear, but through two years of marketing, will inevitably encounter the following types of questions:
1, the transmission
HD IP camera 720P or 1080P generally will choose a solution, if you want to achieve the desired image effect, we need 2 ~ 8M network bandwidth, if a system were to have a few hundred points, and that the flow of data across the network will be quite large , and the video stream is a real-time data streams, will continue to cause network-related switching equipment constant pressure, which requires adequate network planning in doing homework.
Solution: As the cable costs have been reduced, the local LAN can add high-performance fiber-optic switches to form high-speed network, Gigabit to the desktop is a very easy thing. With the popularity of broadband networks, especially this year, has just launched the "triple play", the rate of households have reached tens of megabytes to hundreds of megabytes, Copper light eventually brought us cheap high speed internet. For remote for high-definition video transmission is already not too long time.
2, storage
On a question referred to the problem of huge data flows, data aggregation to the center, or if each node is stored on the central inlet pressure of bandwidth and storage capacity is a major challenge.
Solution: currently only IPSAN and invested heavily on the storage medium to do, IPSAN best use of embedded architecture, much less plug boards, high stability, but the drawback is poor compatibility moment, less flexible secondary development . NVR products on the market are mostly based on X86 architecture, which is the server plus array card, install the application software, servers and disk arrays combo, compatibility is better. If you use IPSAN way, you need to use storage media enterprise-class hard drive, so as to play a IPSAN in the data storage speed and security benefits. For some small systems, does not require too long if you save time, while the data security requirements are not too high, can use the market mainstream server to complete the storage function.
3, the display of
Many HD manufacturers just focus on the front-end IP Camera pixels, without a corresponding development of high-definition video decoder, only around a PC screen to watch high-definition images, high-definition images can not be independent in the large displayed on the screen.
Solution: For high-definition screen TV wall, we have developed a high-definition decoder, the front-end transmission over the HD graphics for effective reduction connected to large screen high-definition input interface, high-definition picture perfect to show on the screen above.
4, management
Many manufacturers or according to the traditional definition of thinking to do analog cameras HD network camera, bought ready-made hardware solutions, using the MPEG4 standard algorithms provided by third parties, only provides a network interface for a simple look digitize the back platform as how to camera hardware, and data flow management, as he did those underlying core algorithms and technologies simply can not achieve.
Solution: try to select hardware interfaces with a rich front-end devices, such as alarms, SD card, intercom, audio, 485, etc., in a project scenario Party can request for flexible combinations, no longer need a separate additional customization function. Software should have a variety of access methods, such as WEB, client, a large platform that can provide the SDK can be very flexible, and third-party software for docking. Function modules to complete as much as possible, such as the police, streaming media, storage services, etc., can be directly used in the project.
5, the night side
In the case of day-lit, high-definition is very easy, once applied in low light or night surveillance when needed, HD became powerless it. Since most of the HD IP Cameras using CMOS sensor, which is less sensitive to light, if not with infrared light, in the night is dark, and we monitor most of the time period you want to prevent precisely at night, so will make the high expectations of high-definition video systems became a decoration.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.cn for more information.
2013年6月30日星期日
Home monitoring network camera and wireless HD how to solve problems
Home monitoring network camera and wireless HD how to solve problems
Plagued by civil security market there are many factors in addition to price factors, the large part of the reason lies in its market applications: high definition and wireless when it can achieve? High-definition monitor environment, whether civilian market popularity of high definition still a debatable topic, But fundamentally speaking, the civilian market is high-definition HD Popular important step in chess; while wireless technology monitoring and network monitoring with zero embodies the advantages of cabling.
HD low bandwidth monitoring - image codec
HD IP Camera surveillance to resolve family way can come in handy. Firstly, or to network monitoring point of view, the codec can do to further upgrade. In the field of video surveillance is more mature as H.264 or MPEG-4 codec, on this basis, a number of security vendors to image compression standard for the development of the source code using H.264High Profile DSP chip.
Home monitoring network camera and wireless HD how to solve problems
H.264High Profile and what advantages does? H.264 codec with the ordinary compared to the upgraded technology can be implemented in 2M ~ 4M network bandwidth conditions, reach 1080p/30 frame imaging results; under normal usage under the terms, H.264HP compression standard can be reduced by 30% of the bandwidth, due to the use of fields and industries distinction is possible to achieve 50% reduction in bandwidth.
H.264HP compression standard would be more suitable wireless network, the wireless network bandwidth is low, so in order to achieve high-definition home monitoring system effects, in theory, is a very viable option. In addition, to the wireless network environment to achieve high-definition monitor, for data loss problems must also be addressed.
5% packet loss had no effect on the video image?
For wireless networks, stability is the test of its network monitoring transmission medium as a major problem. Not to mention video surveillance, is also in the daily internet there may be less than the local wireless network coverage, or signal weak, the data packet loss natural that.
For some companies have introduced anti-loss technique, in fact, not entirely without packet loss, packet loss in the range of 5% does not affect the image quality. In front of high-definition IP Camera, embed the technology can do adaptive packet drop policy, IPC real-time monitoring network status, with HTTP functionality. Simple to understand, like everyone QQ online transfer files, once the network unusual or unexpected termination of resend the file can retain the original schedule, while receiving the full range of past data.
Video surveillance storage
For home monitoring, in addition to solve the above two issues, data transfer and storage is a major problem. If a DVR as a data storage device, the cost will inevitably increase, and will face the wiring process. Small advice, wish to purchase specially adapted for civilian use, home monitoring devices, wireless capabilities in support of the premise, the camera can also be achieved 1080p or 720p standard; in storage, either through software platform storage to your computer, but also can be built SD card, real-time monitoring for, 720p image generates about a month 30G, and now the SD card is also fully meet demand video storage a month.
Anyway, in high-definition video compression codec, not only is the bandwidth is reduced, the same token, the back-end storage devices for pressure is also reduced. High-quality compression reduces data redundancy of storage space, the most valuable information is extracted to achieve intelligent storage is the ideal realm.
In summary, the monitoring of civil or other fields, the high-definition to be coexist and wireless technology, the problem seems to be that we must first solve the problem. Especially in the wireless monitoring technology, the low bandwidth of security companies can not solve the problem, but the only thing to do is how low bandwidth and unstable factors to achieve high image storage and transmission.
wireless camera IR IP Camera HD Camcorder ipcam Wired IP Camera Consumption IP Camera POE IP Camera Plug Play IP Camera HD IP Camera Wireless IP Camera IP Camera Network camera manufacturer
Plagued by civil security market there are many factors in addition to price factors, the large part of the reason lies in its market applications: high definition and wireless when it can achieve? High-definition monitor environment, whether civilian market popularity of high definition still a debatable topic, But fundamentally speaking, the civilian market is high-definition HD Popular important step in chess; while wireless technology monitoring and network monitoring with zero embodies the advantages of cabling.
HD low bandwidth monitoring - image codec
HD IP Camera surveillance to resolve family way can come in handy. Firstly, or to network monitoring point of view, the codec can do to further upgrade. In the field of video surveillance is more mature as H.264 or MPEG-4 codec, on this basis, a number of security vendors to image compression standard for the development of the source code using H.264High Profile DSP chip.
Home monitoring network camera and wireless HD how to solve problems
H.264High Profile and what advantages does? H.264 codec with the ordinary compared to the upgraded technology can be implemented in 2M ~ 4M network bandwidth conditions, reach 1080p/30 frame imaging results; under normal usage under the terms, H.264HP compression standard can be reduced by 30% of the bandwidth, due to the use of fields and industries distinction is possible to achieve 50% reduction in bandwidth.
H.264HP compression standard would be more suitable wireless network, the wireless network bandwidth is low, so in order to achieve high-definition home monitoring system effects, in theory, is a very viable option. In addition, to the wireless network environment to achieve high-definition monitor, for data loss problems must also be addressed.
5% packet loss had no effect on the video image?
For wireless networks, stability is the test of its network monitoring transmission medium as a major problem. Not to mention video surveillance, is also in the daily internet there may be less than the local wireless network coverage, or signal weak, the data packet loss natural that.
For some companies have introduced anti-loss technique, in fact, not entirely without packet loss, packet loss in the range of 5% does not affect the image quality. In front of high-definition IP Camera, embed the technology can do adaptive packet drop policy, IPC real-time monitoring network status, with HTTP functionality. Simple to understand, like everyone QQ online transfer files, once the network unusual or unexpected termination of resend the file can retain the original schedule, while receiving the full range of past data.
Video surveillance storage
For home monitoring, in addition to solve the above two issues, data transfer and storage is a major problem. If a DVR as a data storage device, the cost will inevitably increase, and will face the wiring process. Small advice, wish to purchase specially adapted for civilian use, home monitoring devices, wireless capabilities in support of the premise, the camera can also be achieved 1080p or 720p standard; in storage, either through software platform storage to your computer, but also can be built SD card, real-time monitoring for, 720p image generates about a month 30G, and now the SD card is also fully meet demand video storage a month.
Anyway, in high-definition video compression codec, not only is the bandwidth is reduced, the same token, the back-end storage devices for pressure is also reduced. High-quality compression reduces data redundancy of storage space, the most valuable information is extracted to achieve intelligent storage is the ideal realm.
In summary, the monitoring of civil or other fields, the high-definition to be coexist and wireless technology, the problem seems to be that we must first solve the problem. Especially in the wireless monitoring technology, the low bandwidth of security companies can not solve the problem, but the only thing to do is how low bandwidth and unstable factors to achieve high image storage and transmission.
wireless camera IR IP Camera HD Camcorder ipcam Wired IP Camera Consumption IP Camera POE IP Camera Plug Play IP Camera HD IP Camera Wireless IP Camera IP Camera Network camera manufacturer
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