Due to the rapid development of technological advances, there are many techniques, which greatly facilitates the daily life and work of the people. No exception, and the creation of IP cameras, which replaced the analog camera and is by far the best way to video. so, What is an IP camera?
Introduction
IP Camera is a digital video camera, that transmits a video stream in a digital format via IP protocol. If you look, the IP Camera is really a minicomputer, whose function is to receive the video signal, its compression and transfer to the WLAN. To some extent, IP cameras can be classified as a web camera, but between them there are also a number of differences. One of the differences between the IP camera and web camera is, the first is connected to its own IP address, while the second connects via the USB port. Also, IP Camera can work independently, and for Web camera needs included computer. At its core,, IP cameras are based on the computer and it is the key to the differences with analog cameras. Before the invention of IP video surveillance cameras were analog. The signal is fed to the resolution 704 pixel *576 through RF cable. If you compare an analog CCTV and IP cameras, the naked eye will see the difference in picture quality.
It should also be noted, that to the IP camera can be connected in Wi-Fi, a slot for SD memory cards, microphone and speaker, infrared filter and backlight, PoE module, that provides power to the camera IP, alarm, electrolocks, lighting, etc.. A great advantage of IP video surveillance is, that access to the IP camera is possible not only to any city, but also anywhere in the world via the Internet.
Applications IP cameras
IP cameras are often used in video surveillance systems, eg, security services, or enterprises to oversee the process and visual confirmation contingencies, or in international companies for the purpose of general project management, or in tourist, in order to advance in the field of services, etc..
Disadvantages of IP video surveillance
- IP cameras are significantly more expensive compared with analog cameras.
- regarding sensitivity, IP Camera again still loses analog cameras, which have a high sensitivity.
- Decompression of a video stream using IP cameras.
- To hack IP cameras over the network.
- The short length of the transmitted signal - 100 m, if a twisted pair of copper. To overcome this barrier 100 meters have to be used for subsequent switch of the transmission signal.
Advantages IP cameras
- Extensive system deployment.
- The signal is transmitted over longer distances.
- Ability to use the wireless network to the IP cameras.
- Easy to configure.
- Application of digital CMOS image sensors as opposed to CCD sensors, are used in the analog cells.
Based on the above listed, suggests one terminal, that the future of IP cameras.