No.
CCTV
CCTV - basics
Name
Date
1
SADP application - tool for integrating CCTV systems based on HIKVISION equipment
SADP (Search Active Device Protocol) is a simple tool designed to support ULTIMAX and ULTIMAX-Hikvision DVRs, ULTICAM cameras, ULTINET video servers - with a PC connected to the same local network (LAN). It allows to manage the network parameters of the DVRs, IP cameras, and video servers. The software runs on Windows XP/Vista/7.
2010-07-01
2
H.264 compression - learn and use in practice!
Currently, H.264 compression has become a standard in digital video recorders (DVRs). The most advanced devices enable the user to control the compression ratio and many parameters of the video stream injected into the network. To understand the impact of the changes and the allowed ranges, the users should know the general principles of this video compression method.
2011-11-02
3
The main features required for CCTV systems
In the case of surveillance systems, each installer and user must be aware that devices having too low parameters or not well suited for the purpose may bring threat to life or property. It will also effect in insufficient reliability of the system and frequent servicing problems.
2007-01-01
4
Internet CCTV GUIDE - signal standards and parameters
Video signal used in CCTV is called VBS (video, blanking & syncs, or video baseband signal) and CVBS (composite/color video baseband signal).
IP is the acronym of the Internet Protocol, the most popular protocol used for communication in computer networks and the Internet. IP camera is a device producing digital video stream that is transmitted via wired or wireless IP networks. It can be viewed and/or recorded even in most remote locations in the network.
2007-01-01
5
Internet CCTV GUIDE - Monitors
A monitor is a device that allows to change electric signals to optical information suitable for the human eye. Monitors have to fulfill safety standards, which means that they must have CE certificate. Safety standards describe, among others, maximum accepted electromagnetic and X-ray radiation levels, protection of the user against electric shock, and protection of the device against surges coming from the power line. Before we choose a monitor, we should pay attention to monitor's parameters: resolution - capability of showing small details, picture geometry and stability, maximum ...
2007-01-01
6
Internet CCTV GUIDE - Cameras
High precision of image sensor, good choice and quality of lens - are the basis for good results.
2007-01-01
7
Lenses
Camera lens - optical component of a camera used for projection of the image onto light-sensitive sensor surface.
Focal length - distance from the optical center of a lens (measured along its principal axis) to the image of an object placed in infinity - measured and given in millimeters.
Iris - the mechanism of aperture regulation that changes the amount of light going through a lens and falling on the image sensor of a CCTV camera.
2007-01-01
8
Internet CCTV GUIDE - switching and image processing devices
There are following groups of these devices: switchers and quads, multiplexers and video matrix.
2007-01-01
9
Internet CCTV GUIDE - video recording
Systems which record video signal in digital and compressed form are nowadays basic platform of image registration, offering numerous features connected with processing and transmission of information.
2007-01-01
10
Internet CCTV GUIDE - video transmission
Due to security reasons and tendency towards cost reduction (necessity of employing professional staff), surveillance system centers are situated in some distance from the protected buildings and places, thus the leading role of good quality video transmission.
2007-01-01
11
Internet CCTV GUIDE - wireless transmission
Use of wireless transmission will significantly extend the scope of surveillance systems towards scattered locations, such as electricity relay stations, waterworks, elements of road infrastructure and many other remote places.
2007-01-01
12
Internet CCTV GUIDE - Camera Housings
In order to ensure proper work conditions for protected devices, housings may be equipped with heaters, fans, cooling systems etc., depending on specific environment.
2007-01-01
13
Internet CCTV GUIDE - power supplies and accessories
Improper powering of cameras is often the main reason of faulty operation of CCTV system.
2007-01-01
14
Internet CCTV GUIDE - Pan-Tilt Devices
Use of Pan-Tilt device is the easiest way of increasing field of view of a camera.
2007-01-01
15
INTERNET CCTV GUIDE - video surveillance with lighting
Good traditional lighting has many advantages. However, it is visible, and it may be easy for an intruder to get round the light zones. It requires a lot of energy and is expensive.
2007-01-01
16
Internet CCTV GUIDE - Cables
Video signal can be transmitted in analog or digital form.
2007-01-01
18
Internet CCTV GUIDE - Amplifiers
Signal amplification is used to compensate attenuation of cables. Attenuation figure depends on cable type and its length.
2007-01-01
19
Internet CCTV GUIDE - Modulators - junction of CCTV and SMATV/MATV system
Modulator (or RF modulator) allows conversion of baseband video (or audio & video) signal into RF band that can be received by regular TV sets.
2007-01-01
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