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Analog cameras and network cameras seem to be a pair of monitors, often you have not me, I have not you. Because of this, many users do not know whether to select analog cameras or network cameras when installing monitoring systems. Analog cameras are cheap, network cameras are more expensive, and two are weighed against each other. Many users make decisions based on the price advantage, and this is often one of the means used by analog camera salespeople to promote sales. However, we must not be fooled. When we purchase products, in addition to price considerations, it is more important to make decisions based on our own needs and the performance of the products themselves.
The front end of the analog camera uses an interlaced CMOS/CCD sensor to convert the optical signal into an analog electrical signal, which is then output to a DSP. The DSP performs A/D conversion and color adjustment and then performs D/A conversion modulation into a PAL/NTSC television system. Signal output.
The network camera is a new generation camera that combines the analog camera and network technology. It has an embedded chip and uses an embedded real-time operating system. The digitized video signal from the camera is compressed by a highly efficient compression chip and transmitted to a Web server over a network bus. Authorized users can view, store, and manage video data at a local or remote location via a standard IP-based network infrastructure.
With the above introduction, I believe that readers probably have an understanding that IP cameras can be connected to the Internet and analog cameras cannot, but this is only the most basic understanding. Specifically, analog cameras and IP cameras have the following seven differences:
First, clarity. Seeing more clearly is the goal pursued by each user and the ultimate mission of the security industry. However, the current definition of network cameras and analog cameras cannot be the same.
Network Camera: At present, network cameras can already reach millions, 2 million, 5 million, or even 10 million pixels of image output.
Analog Camera: At present, analog cameras can only output images of CIF and D1.
Second, the management of monitoring. The webcam has built-in WEB. Using a standard web browser on a PC, it can manage and view images. At the same time, the network camera can also achieve remote management and image viewing, and the image data exists on the remote hard disk, easy to search, easy to store, will not be destroyed.
Analog cameras are relatively closed systems. They can only be monitored internally and cannot be remotely monitored. Video data can only be stored locally or viewed remotely and is easily destroyed by criminals.
Third, integration. The built-in operating system of the network camera can manage and view images using the standard WEB browser on any PC, and can be shared with multi-screen management software to achieve multi-channel monitoring without limit. Does not increase the cost of hardware.
Analog cameras must be connected to DVRs. The number of DVR channels is limited. After the DVRs are fully loaded, the cost of the hardware is increased when the cameras are added.
Fourth, the installation of the camera. The webcam simply connects it to the nearest network and assigns an IP address. It can use the existing network as a transmission platform, not to go wiring.
The analog camera needs to connect the coaxial cable to each camera and connect it to the control platform, video equipment, and display equipment. Each new route must be rerouted and no ready-to-use network is available.
Fifth, the realization of remote monitoring. Network cameras can be remotely managed, such as video settings, PTZ control, alarm settings, two-way intercom, upgrade management and other functions. Analog cameras can only manage images viewed locally.
Sixth, scalability. Network cameras can easily add more network cameras to the system. It is very difficult to expand the work of analog cameras. Each analog camera needs a dedicated cable, which affects the image quality when using long cables.
Seventh, cost. Network cameras and high-quality network cables typically cost 30% to 40% less than standard coaxial cables. A network cable can support hundreds of network cameras and other devices at the same time. IP-based network infrastructures are often in place, which means that the cost of building a system can be reduced to include only the cost of a webcam.
For analog cameras, coaxial cable is very expensive, and the standard RG59 750hms coaxial cable is typically 30% to 40% more expensive than high quality cable. And each analog camera needs a cable connection. If there are multiple cameras, they must buy a lot of cables and pay for the installation and deployment of these cables. Manpower and maintenance costs are higher, and the system construction cost will also include the cost of analog cameras and storage recording equipment.
Through the above comparisons, it is believed that users will have more in-depth consideration when purchasing surveillance cameras, which not only meets their own needs, but also matches the budget.
The front end of the analog camera uses an interlaced CMOS/CCD sensor to convert the optical signal into an analog electrical signal, which is then output to a DSP. The DSP performs A/D conversion and color adjustment and then performs D/A conversion modulation into a PAL/NTSC television system. Signal output.
The network camera is a new generation camera that combines the analog camera and network technology. It has an embedded chip and uses an embedded real-time operating system. The digitized video signal from the camera is compressed by a highly efficient compression chip and transmitted to a Web server over a network bus. Authorized users can view, store, and manage video data at a local or remote location via a standard IP-based network infrastructure.
With the above introduction, I believe that readers probably have an understanding that IP cameras can be connected to the Internet and analog cameras cannot, but this is only the most basic understanding. Specifically, analog cameras and IP cameras have the following seven differences:
First, clarity. Seeing more clearly is the goal pursued by each user and the ultimate mission of the security industry. However, the current definition of network cameras and analog cameras cannot be the same.
Network Camera: At present, network cameras can already reach millions, 2 million, 5 million, or even 10 million pixels of image output.
Analog Camera: At present, analog cameras can only output images of CIF and D1.
Second, the management of monitoring. The webcam has built-in WEB. Using a standard web browser on a PC, it can manage and view images. At the same time, the network camera can also achieve remote management and image viewing, and the image data exists on the remote hard disk, easy to search, easy to store, will not be destroyed.
Analog cameras are relatively closed systems. They can only be monitored internally and cannot be remotely monitored. Video data can only be stored locally or viewed remotely and is easily destroyed by criminals.
Third, integration. The built-in operating system of the network camera can manage and view images using the standard WEB browser on any PC, and can be shared with multi-screen management software to achieve multi-channel monitoring without limit. Does not increase the cost of hardware.
Analog cameras must be connected to DVRs. The number of DVR channels is limited. After the DVRs are fully loaded, the cost of the hardware is increased when the cameras are added.
Fourth, the installation of the camera. The webcam simply connects it to the nearest network and assigns an IP address. It can use the existing network as a transmission platform, not to go wiring.
The analog camera needs to connect the coaxial cable to each camera and connect it to the control platform, video equipment, and display equipment. Each new route must be rerouted and no ready-to-use network is available.
Fifth, the realization of remote monitoring. Network cameras can be remotely managed, such as video settings, PTZ control, alarm settings, two-way intercom, upgrade management and other functions. Analog cameras can only manage images viewed locally.
Sixth, scalability. Network cameras can easily add more network cameras to the system. It is very difficult to expand the work of analog cameras. Each analog camera needs a dedicated cable, which affects the image quality when using long cables.
Seventh, cost. Network cameras and high-quality network cables typically cost 30% to 40% less than standard coaxial cables. A network cable can support hundreds of network cameras and other devices at the same time. IP-based network infrastructures are often in place, which means that the cost of building a system can be reduced to include only the cost of a webcam.
For analog cameras, coaxial cable is very expensive, and the standard RG59 750hms coaxial cable is typically 30% to 40% more expensive than high quality cable. And each analog camera needs a cable connection. If there are multiple cameras, they must buy a lot of cables and pay for the installation and deployment of these cables. Manpower and maintenance costs are higher, and the system construction cost will also include the cost of analog cameras and storage recording equipment.
Through the above comparisons, it is believed that users will have more in-depth consideration when purchasing surveillance cameras, which not only meets their own needs, but also matches the budget.