Active Total Security Systems

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Cctv speed dome camera speed dome cameras can move side to side (pan), up and down (tilt), and zoom in and out (zoom). Ptz cameras are controlled either by a remote control, joystick, or computer software. what do i need to use a speed dome camera to use a speed dome camera you will need 2 things. 1) a display device. This is what will display the video of the speed dome camera. This is often times a monitor, tv, or computer monitor. 2) a device to control the pan, tilt, and zoom of your camera. This is normally 1 of 2 things. 1) the joystick controller that is sold along side of the speed dome camera. 2) you use your computer's dvr card software to control the speed dome camera. We also sell dvr card and software. coming out of the speed dome camera is the power connector, the video cable, and a the wires to control the speed dome camera functions. The power cable connects to a power adapter. The video cable connects to your display device. It does not necessarily have to run to the same place the controls go. The speed dome camera wires connect to either your joystick controller or computer if you're using a dvr card.

Board cameras with dome enclosure is called as dome camera are mini cameras that feature a lens mounted onto a circuit board. Their size sometimes as small as one inch by one inch - makes them well suited for security camera system applications where discretion is important. They are often used for covert security camera system monitoring and some board cameras even utilize pinhole lenses. The average hole size on a pinhole lens is 1/16 diameter. This is the only part of the camera that must be exposed in order for a picture to be obtained. There are two types of pinhole lenses flat and conical. Conical lenses require a smaller hole and are often used in security camera system installations involving ceiling tiles, while flat lenses are better when the security camera system is to be used with thin material, such as clothing. The small size of a pinhole lens does have a slightly lower resolution than a board lens, which is usually in diameter, thereby allowing more light to enter. two security camera system technologies are used for imaging in board cameras: ccd and cmos. Ccd stands for charged coupled display and it is also used for imaging in a fixed security camera system. The ccd converts light into electricity that represents picture information. Common ccd sizes are 1/3 and . 1/3 is currently the standard but larger sizes, such as 2/3 and do exist. Cmos stands for complementary metaloxidesemiconductor. It also converts light to electricity but cmos offers greater integration of functions, allowing for smaller overall size, and can operate at lower power requirements. The tradeoff has been at the expense of image quality. With modern security camera system technology, however, lines have been blurred as ccd cameras have lowered their power requirements and the image quality of cmos chips have gotten better.

Cctv digital video recorder-dvr how to choose a dvr for cctv applications 1 number of channels. Most dvrs are classified by the number of channels or cameras that can be connected. Typical configurations are 1, 4, 8 or 16 channels. Consider carefully how many cameras are required, both now and in the future. It is sensible to pay a little more now and have room for expansion at a later date. 2 method of channel display. This is similar to the functions carried out by switchers, quads and multiplexers. A single channel recorder will probably not have any of these functions so will need the additional purchase of this type of unit. the better dvrs have full multiplexer functions built into them. This is the desired type of product. A 4 channel dvr will split the screen into 4 and display one camera in each window. Similarly a 9 channel dvr will give a 3 by 3 matrix to display all channels. All other functions of multiplexers like alarms, time and date stamping should be available. 3 duration of recording time. This will depend on the capacity of the hard drive. The more sophisticated units allow a number of user-definable options. Typical settings allow the dvr to automatically start again at the beginning and record over the oldest data or the unit can indicate that it is full and the hard disk should be changed. It is preferable that the disks are mounted in slide out drawers to aid replacement. by using video compression techniques it is possible to greatly extend the amount of data that can be stored on a hard drive. Similarly, by reducing the number of images per second that are recorded the capacity is increased.

The wide dynamic range (wdr) function of a camera is intended to provide clear images even under back light circumstances where intensity of illumination can vary excessively. The wdr allows a camera to filter the intense back light surrounding a subject and thus enhances the ability to distinguish features and shapes on the subject. Wdr cameras are usually recommended for situations where light enters a premise from various angles such as a multi-window room. A camera placed on the inside of the room will be able to see through the intense sunlight or artificial light coming in. if an indoor security camera is pointed towards a window or an entrance door, you will see the background washed out during daytime. This is very common situation in restaurants and stores which have big glass windows. to fix this problem, cctv manufacturers came out with wdr (wide dynamic range) technology. the way it works, a camera is fitted with two ccds. One high speed ccd and one low speed. The two ccds take 2 scans of the same image instead of one scan like a typical camera. the first ccd scans the images in normal light condition. After that, the camera scans the second time at high speed to get the image with strong light background. The image processor then combines the two images into one to provide a balanced image which shows the indoors and outdoors clearly.

A dvr card is a device for installation in a home pc computer which converts that pc into a dvr digital video recorder by gathering video and compressing it into digital information onto a computer's hard disk drive. When all works well, this allows a home pc to record up to several surveillance cameras. However, due to reliability concerns and software glitches associated with windows as an operating system platform, using pci cards to record video is not recommended. A home pc is designed to perform many operations at once, but relatively simple functions. Recording digital video requires enormous system resources like computer memory and processor attention. Complete dvr digital video recorders designed specifically to handle recorded video (and solely recorded video) offer the benefits of reliability, as well as simple setup and use, a computer card can never achieve.

A basic definition of a lens is "a device that collects light from an environment, narrowly focusing it onto either a cathod ray tube or solid-state target. " in the scheme of things, lenses are considered to be a camera peripheral rather than part of the camera itself. This is because it does not require a lens to produce a 1-volt-peak-to-peak (vpp) video signal at a camera's output. In fact, all that is necessary to create a video signal is to have light strike the target inside the camera. However, without the proper lens, video images cannot be focused onto the light-sensative target in a video camera to produce a "usable" video signal. among the many issues that pertain to a cctv syste, the most important that should be considered before buying a lens are: camera format, whether the situation calls for a fixed-iris lens or one with an auto-iris, whether the operator needs to zoom in on particular parts of the scene, and the size of the viewing area involved. format lenses and cameras now come in four formats: 1/3-, 1/2-, 2/3-, and 1-in. Lens format is actually determined by the size of the opening in a camera where the lens attaches. When the diameter of this opening measures 1/3 in. , the camera is said to be a 1/3-in. Formated camera. On the other hand, when the diameter is 2/3 in. , the camera is said to have a 2/3-in. Format. for proper viewing, experts say to use only a lens that's formatted the same or higher than the camera used. For example, if the opening in a camera (camera format) is 1/2 in. , a 1/2- to 1- in. Formatted lens should be used for optimum viewing. Or, if a camera with an opening of 1 in. Is used, use a 1-in. Formatted lens. To do otherwise will result in the projection of only part of the viewing area onto the target in the camera.

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Ontrols up to 64 devices through one keyboard controller (devices such as the ptz camera, dvr and door access control. . . Etc. ) user-friendly button placement & lcd touch panel (128 * 64 pixels) for easy operation network upgrade function to get advanced functions supports multi-protocols password protection to prevent unauthorized intruder built-in microphone for broadcast function

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IR Dual Camera has two cameras Color Camera and a B&W Camera for complete outdoor surveillance. Color Camera is used for Day light condition and when the IR LEDs are auto switched ON in the night mode, it switches OFF the Color Camera and switches ON the B&W camera. As B&W camera needs lesser light, with IR it delivers an excellent picture quality in [0 Lux] night condition too.