What is a network camera?
Previously, when talking about CCTV nguot often thought to traditional CCTV (analog camera), the type of camera that is connected to the center by coaxial cable observed. 10 years ago, also called network camera IP camera was born and has flourished. Camera network activity based on the principle of moving images and sound into digital data and then transmit the data over the network or internet. Below is a summary comparison between systems using network cameras (IP cameras) and traditional analog cameras.
IP CCTV system does not require local recording, network camera can transmit images via LAN / WAN, Internet networks to a central location where the image was recorded, viewed and managed.
CCTV systems are designed similar to record images in place. If users have more than 2 basis at each point, the observer will have one separate recording devices, leading to greater system management more difficult and inefficient.
Performance better image
IP CCTV system converts all image data, network camera provides high accuracy in detail, at least 3 times better quality than camer similar observations.
Độ phân giải của camera
CCTV systems based on technology similar to PAL or NTSC analog and the maximum resolution possible only 414 720 pixels. This recorded image quality is low, so the area need to install or increase the number of cameras needed to see an area, increase costs and cause unsightly construction.
Installation of the system easier
There are 2 connection types for IP CCTV system wired or wireless. Once connected to the network, the images look very simple just use 01 computers with web browsers like Internet Explorer, Firefox, ... If PoE network camera does not need a separate power supply which use the network to power lines.
CCTV systems similar to separate cabling. Each camera is connected to the digital video recorder or DVR using the cable screen donf RG59/RG6/RG11 shaft or similar and separate power supply needed. This makes the installation of new or added to existing installations are expensive and slow performance.
Integrated system better
Due CCTV IP network communication, and integration should allow connections on the same network / cable as the IP-based systems, such as access control, IP phone systems, ... The integration means that different systems can work together, such as IP CCTV systems can zoom camera images at the point of need access control. IP camera system also allows the direct use of IP-based services based on standards such as e-mail or send images via FTP standard.
CCTV systems similar to separate cabling infrastructure, this means that not easily integrated with access control, alarm systems or other systems commonly found in buildings, because each system infrastructure use separate devices for each system independently.
In terms of unit price network camera systems seem to have higher costs than similar camera system. But overall, the system connects over the network and facilitate technology increases image resolution IP camera should cost maintenance and management of IP camera system will be lower.
The investment in CCTV systems are generally lower compared to the same IP camera system, but this is not true for all cases. In cases when detailed observation or save operational costs of maintaining the IP camera system will be much lower compared with the same camera system.