Recent years break-ins, robberies, car theft and shoplifting are skyrocketed in major Canadian cities. If you think about ensuring the safety of your house, garage or business, then you should read this material. In this article we will talk about video surveillance, how it works, and how video surveillance helps to establish permanent protection.

Vancouver security cameras system provides protection in the sense that passively protects against the criminals. Thefts are afraid of being caught and therefore tend to avoid places with surveillance cameras installed. Up on finding the camera at the premises which meant to be robed, offenders usually end up abandoning their plans. There are three main functions of a video surveillance system: deter purpose, records of irrefutable piece of evidence during the investigation, helping more quickly to catch criminals, and has psychological impact on offenders that have been caught but play innocent.

So what components video surveillance system is made of?
Firstly, there is no video surveillance system without security camera. At the heart of a security camera you will find matrix, same as in camcorder. Security cameras in Vancouver market there are two types of matrix - they are different sizes and they are made by two well-known companies. If you want to have good surveillance system with quality images, buying high resolution security camera is necessary. Best choice is camera with matrix 1/3" brand Sony. Some cameras are equipped with infrared LEDs, which allow them to see in complete darkness and get clear night vision image. Very popular cameras in vandal resistant housing that can withstand heavy impact and even bullets.

Today buyers want to have a quality picture on their monitors. Picture quality depends on the number of television lines. For average security camera it is enough to have 420-520TVL. However, for better quality recommended resolution between 540-700TVL with low light sensitivity. This is enough to recognize a person thirty feet away from the camera.

Another add-on for better surveillance system is to have microphone installed. Majority of digital video recorders come with sound inputs for microphones. They come in very small almost invisible size can pick up clear sound in the radius of 30 feet. Sound integrated with cameras in the system, allows to have playback with picture and sound together. Ability to see and hear in real time next to the system or over the internet has brought surveillance technology to the new level.

How digital video recorder works?
DVRs are built with 4, 8, 16, 32 and 64 camera input channels. Transmitted signal from security camera goes to decoder located on DVR main circuit board. Then video signal goes through h.264 digital video compression and gets stored on the hard drive. For picture display DVRs are connected to a computer monitor or conventional TV sets.

Human eye can capture only 24 frames per second. For high quality video get real time DVR that supports playback of 30 frames per second per camera channel. If you do not mind video stutter or slow down, you can get a digital video recorder at 10-15 frames per second.