Posts Tagged ‘ Video Surveillance’



Color Cameras for Home Security

Written By:
Tuesday, August 10th, 2010

Security Camera King offers a full line of color cameras for home security. Innovative technological advances have yielded a vast diversity of color digital video cameras with almost unlimited versatility for home security. These cameras now offer features that, not long ago, would have been cost prohibitive or simply unavailable. In addition, today’s color cameras for home security are light weight, easy to install, and simple to use.

There are three basic types of camera based on shape; box, bullet, and dome. Each can be useful as color cameras for home security. Generally speaking, the dome camera is used most often indoors because of its low profile design. Box cameras may also be used indoors but are a bit more conspicuous. Usually, box cameras cannot be used as outdoor cameras unless they are placed inside a protective enclosure. Bullet cameras may be used indoors or outdoors, however these cameras are frequently weatherproofed and designed for use specifically outdoors

A typical home security system consists of the color digital cameras, Digital Video Recorder or DVR, and a monitor. The cameras capture a video image and pass it on to the DVR where it is processed and stored. The monitor is used to view the image in real-time (live) or review older footage.

Digital video color cameras for home security normally use one of two sensors to produce a video image: The Charged Coupled Device or CCD; or the Complimentary Metal Oxide Semi-Conductor or CMOS. When these sensors were first used the CCD was more expensive and produced a higher quality video image but recent technological improvements have put the CMOS on close to, or even par with, the CCD.

When considering purchasing color cameras for home security, it’s important to know a little information about the sensors since they affect how the camera produces an image and even more so, the price. These sensors range in size from about ¼ inch up to 1 inch or so. Generally, the larger the chip the higher the resolution (quality) of the video image produced.

These sensor chips can be built so they are very sensitive to light. Color cameras for home security that contain these types of sensors are called day/night vision cameras and can produce high-quality color images with very little available visible light.

These sensors are also inherently sensitive to certain types of infrared radiation. Using infrared Light Emitting Diodes or LEDs as spotlights, cameras with these sensors can create high quality monochromatic video in total darkness. (The infrared light created by the LEDs is invisible to the human eye.)

There are other options to consider when purchasing color cameras for home security use. Digital video cameras require that a coaxial RG-59 video transmission cable be run from each camera to the DVR. If you will be installing cameras where cabling would be difficult, you may want to consider the wireless camera option. Wireless cameras transmit their video signals via built in transmitters and on-board antennas to a corresponding receiver unit that forwards the signal to the DVR.

Another convenient option is to use IP ready color cameras. IP or Internet Protocol ready cameras for home security systems contain their own server so they can be connected directly to the internet. These cameras can be viewed and controlled using either a simple web browser such as Internet Explorer or their own computer software. You can network your entire home video security system with these cameras using just an internet connection to each camera and can monitor them anywhere there is internet access.

If your home security system requires that your cameras not be obvious, there are several hidden or disguised camera options available as well. These cameras, designed for covert use (they make great nanny cams for example), are designed to be hidden or disguised as other objects. Security Camera King stocks a wide selection of the cameras that appear to be other objects such as smoke detectors, motion detectors, exit signs, sprinkler heads, speakers, wall clocks, telephones, thermostats, clock radios, and many others.

So if you are in the market for digital video color cameras for home security use, check out all that Home Security King has to offer. Not only do we offer color cameras for home security use but we also offer the entire system, whether you need a 4, 8, or 16 channel system. To view our catalog of products click on the appropriate heading in the left sidebar of our home page.

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Security Cameras for In Home Use

Written By:
Wednesday, August 4th, 2010

There are several types of security cameras for in home use. In fact, just about any security camera can be used for residential purposes although there are cameras that are more suited for in home use than others. Security camera technology has advanced so much recently that the versatility of security cameras for in home use is almost limitless.

Every home is different; the number of rooms in the home, the perimeter area that surrounds the home and the size of the home’s yard, the entrances and exits, number of windows, especially those on the ground floor – all vary from house to house. As every home’s design is different, so are the uses and needs for the security cameras for that home.

The most effective method to determine what security cameras for in home use are best for you is to evaluate your home design and your security desires and needs. After determining what you need to provide and the level of security and monitoring you desire, you can more easily begin the process of shopping for specific cameras that will satisfy those requirements.

Still, as stated earlier, there are security cameras for in home use that are more suited for this application than others. For an obvious example, an explosion proof camera or housing would be a ridiculous and unnecessary expense for in home use. However Security Camera King offers several different indoor security cameras that are perfect for in home use.

One way to narrow down your camera choice is to determine if you will be able to run the video transmission cable from each camera to the processor/DVR or Digital Video Recorder or if you would prefer a wireless camera instead. Cabling is the least expensive and the most common option for connecting the digital video camera to the DVR.

However, if installing the RG59 coaxial cable would be troubling for you, or if the cable would seem unsightly, or for any other reason the cable would not be right for you, wireless cameras would be the appropriate selection. Wireless cameras still require electrical power supply, normally in the form of a small wire run to the camera from a plug-in transformer or power distribution box. There are some wireless cameras that use rechargeable batteries as well.

Wireless cameras make use of radio technology to broadcast their video data to a corresponding receiver which then transfers the signal to the DVR. So a receiver is also needed if you choose the wireless camera option. Most receivers can handle up to four cameras at one time so if your system requires more than four cameras additional receivers (or a receiver that can handle more than four cameras) will be needed.

Regardless of whether you use cable or wireless technology, there are several different security cameras for in home use based on appearance, mounting design, and function. There are basically three types of cameras based on appearance. They are the box, bullet, and dome types, with each name representing a description of the appearance of the camera.

Each type has its own benefits and deficits. The box camera is probably the most common style of video camera but can also be somewhat obtrusive mounted on a room wall. The bullet type is also popular, but this type of camera usually lends itself to weatherproofing and infrared technology geared toward the outdoors. So if the box and bullet types are not appropriate for your application, then the dome type camera would probably be the best choice.

Dome cameras are fairly low-profile cameras with many available as a flush mount. Flush mounted dome cameras are installed in the wall or ceiling with only the “bubble” cover extending away from the surface. Security Camera King offers several different types of indoor dome cameras based on use and resolution display. That includes total darkness capable night vision infrared dome cameras as well.

Another category of security cameras for in home use include the hidden or disguised camera types. The cameras are embedded inside clocks, thermostats, and other everyday items to disguise their appearance.

To determine what camera is best for you, talk to one of our security experts today.

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Home Video Security Systems

Written By:
Tuesday, August 3rd, 2010

Versatility, economic pricing, and Innovative technology are making home video security systems the number one choice for residential security and surveillance. Home video systems are no longer just for the extremely wealthy; and, their abundance of features and options makes them suitable for use in almost every environment and for any need.

Today’s home video security systems are basically component systems. There are several benefits to component systems, but the greatest is the ability to customize each component to suit your needs.

Thanks to great advances in the electronics industry, especially with semiconductors and integrated circuits, cameras can perform a variety of functions that 15 years ago would have been extremely expensive or simply unavailable. Processors and DVRs are becoming exponentially more powerful with each new design.

Typical home video security systems usually have from one to several cameras, a processor/Digital Video Recorder or DVR, and a monitor. The digital video cameras send their digital video signal to the processor/DVR. The processor converts the cameras’ signals into digital video files that can be viewed on the monitor and/or stored on the DVR for later viewing and/or archiving purposes.

Cameras
The cameras used for home video security systems are usually digital video cameras. These cameras produce high quality color video under normal lighting conditions. Cameras can be purchased with extremely high resolutions that create extremely high quality video.

Cameras are also available for special lighting conditions. There are cameras that can produce high quality video under conditions of very little visible light or cameras that can produce high quality monochromatic or black and white video under conditions of total darkness. These “low light condition cameras” may be useful for perimeter coverage of the home and yard and other outdoor applications.

Night vision infrared cameras are useful for monitoring areas outside or inside the house that are normally not illuminated at night. They are also great for use as a baby monitor camera, nanny cam, and monitor for rooms that are normally not lit such as closets, storage areas, garages, stairwells, etc. These cameras use infrared Light Emitting Diodes or LEDs to illuminate their target area with infrared light. This “light” is invisible to the human eye but can be seen with the camera’s special sensor.

Another useful camera option is a camera with a motion detector. These cameras have small infrared sensors that detect a change in infrared radiation from moving objects. These motion detectors are connected to a relay that can turn the cameras on and off. These can be used to record video only when motion is detected saving DVR storage space. They can also be used to alert you when someone or something is present.

Other available options for cameras include:
• Indoor or Outdoor use
• Wireless transmission technology
• Audio recording in addition to video
• Pan-Tilt-Zoom or PTZ functions that allow the camera’s position or field of view to change
• Hidden or disguised cameras (often used as nanny cams)
• IP or Internet Protocol ready cameras can transmit their images over the internet to anywhere in the world there is internet access

Processor/DVRs
This is the heart and brains of the system. It normally contains the utility that compresses the digital video files to make them smaller. There are many different options for different types of compression utilities. DVRs can also be purchased in a variety of storage capacity options. In addition, other “peripheral” items such as CD, DVD, or Flash card writers can be added to the units.

There are also home video security systems that eliminate the need for a processor/DVR and monitor. These systems utilize your personal computer for these functions instead, making the system all the more affordable.

IP camera home video security systems can be used to monitor the home when you are at work, on travel, or away for extended periods. They are also great for 24/7 monitoring by professional companies. They can eliminate the added expense of a proprietary camera system that would otherwise be required.

If you are interested in protecting your home with a home video security system talk with one our experts today.

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Low Light In Wall Surveillance Video Camera

Written By:
Wednesday, July 28th, 2010

A low light in wall surveillance video camera has a multitude of uses. It can be used to monitor your children to ensure their safety and well being; it can be used to monitor an office,; it can be used as a nanny cam to monitor your nanny and child when you are not present; it can be used to monitor individuals that work in your home; or it can simply be used to keep a watchful eye on your important property.

What exactly is a low light in wall surveillance video camera? There are several different cameras that can be classified as in wall cameras. Generally speaking, an in wall surveillance video camera is any digital video camera that is mounted such that it is either flush with the wall (inside the wall) or is mounted on the wall in such a way that its presence is normally disguised. So basically there are two types of in wall video cameras, unconcealed and covert.

Both types of cameras work the same way, the difference lies in how they are mounted on or within the wall. In addition, a low light digital video camera can capture full color high quality video using very little available visible light. Let’s take a look at how these special low light cameras operate first, and then we’ll discuss the different examples of in wall surveillance cameras.

Contemporary digital video cameras work by converting light energy into electrical energy that can be measured to produce a digital video signal. Digital video cameras do this by using one of two different electronic light sensing chips. One chip is called a Charged Coupled Device or CCD and the other is called a Complimentary Metal Oxide Semiconductor or CMOS.

These electronic chips are sensitive to light. The lens of the camera focuses the image on these chips which then convert the light energy into electrical energy and produce a digital video image. These chips can be manufactured to be very sensitive e to light; so sensitive in fact that they can produce high quality video footage in very low light conditions. These types of cameras are often called day/night vision cameras. Their sensitivity to light, that is, the lowest level of light that they can produce a clear image, is normally rated in Lux.

Lux is a unit of measurement of the intensity of light. Some low light or day/night cameras can produce images with as little as .002 Lux of light. That’s about the same amount of light available in the sky on a moonless, clear night.

Other low light in wall surveillance video cameras may actually be night vision infrared cameras. These cameras produce a high quality color video image in visible light conditions and use infrared light in low light or total darkness. These camera’s sensors are also sensitive to infrared light and usually use infrared Light Emitting Diodes to illuminate the target area. Although the camera’s sensor can see the infrared light, human eyes cannot making them excellent choices for covert low light monitoring.

There are several different examples or designs of low light in wall surveillance video cameras. Unconcealed types are normally installed flush with the wall, the majority of the camera and housing occupying the space behind the wall. The camera normally has a protective face plate that is somewhat flush with the wall and that covers the camera lens. There are even corner mount low light in wall surveillance cameras that can be installed in the corners of a room.

Covert low light in wall surveillance video cameras normally disguise the look of the camera or hide it all together. One examples of a covert in wall surveillance camera includes the wall clock camera. This camera looks like a typical office wall clock, and functions like one too. However, hidden within the face of the clock is an opening for the lens of a camera that is mounted inside the clock body.

Other examples of disguised in wall cameras include heating and air conditioning thermostat cameras, electrical face plate cameras, exit sign cameras, and smoke detector cameras. Thanks to modern technology digital video cameras can be manufactured so small they can be concealed in just about anything.

So if you need to keep an eye on some property, a room, an area, or an office that may not always be brightly lit, and you don’t want the camera to be obvious, consider purchasing a low light in wall surveillance video camera.

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Outdoor Motion Activated Security Camera System

Written By:
Thursday, July 22nd, 2010

An outdoor motion activated security camera system is an ideal choice for perimeter coverage of a home or business. In addition, motion activation is a conservative, economical choice that produces excellent video surveillance and security results.

What exactly is an outdoor motion activated security camera system? The description sounds fairly complicated but in reality the system is relatively simple. Anytime motion is detected, the digital video cameras switch on and begin recording video images. So if no motion is detected, the cameras shut off. This conserves digital video file storage space on a Digital Video Recorder or DVR since the system only records when motion is detected.

Let’s take a closer look at an outdoor motion activated security camera system. These systems are similar to any other digital video security system in that they consist of one to several cameras, a processor/DVR unit, and a monitor. The camera produces an electronic image and sends it along to the processor/DVR. The processor reads the camera data and uses it to create a digital video file. The digital video file may then be viewed on a monitor and/or stored on the DVR for later use.

Most digital video security systems will record constantly, that is 24 hours a day, 7 days a week. However, an outdoor motion activated security camera system only records when motion has been detected. There are several advantages to this type of system.

Many digital video cameras today are wireless; that is they do not have a coaxial cable that transmits the video signal to the DVR. Instead, these cameras have a built in transmitter and antenna that they use to send the signal via radio waves to a corresponding receiver. The receiver then passes the signal electronically to the processor/DVR. However, these wireless cameras still need a wire for a power supply.

To avoid the necessity of a power supply line and transformer, digital video cameras have been manufactured that can utilize rechargeable batteries. A digital video camera with wireless video transmission and rechargeable batteries is truly wireless. This type of camera is incredibly versatile in that it can be mounted almost anywhere without the concern for any type of cabling or wire attachment. However, continuous video capturing can run down the batteries after several hours making replacement with freshly charged batteries necessary. An outdoor motion activated security camera system can greatly extend the run time of rechargeable batteries, because the camera only captures video when motion is detected. Although a very small amount of energy is needed for the motion detector, the largest amount of drain on the battery is during video capture.

Another advantage of an outdoor motion activated security camera system benefits the DVR. A DVR is basically the same thing as the hard disk drive on a personal computer. DVRs come in a wide variety of storage capacities ranging from gigabytes to terabytes in size. Still, digital video files can take up tremendous amounts of storage space, even when COmpression/DECompression utilities are used to make the files smaller in size filling up the storage disk in a short period of time. A motion activated camera only records when motion is detected, which means the DVR is not required to store video files for a continuous 24 hours, unless motion is present for all of that time. Recording video only when activated by motion can greatly reduce the amount of storage capacity needed on the DVR.

How do outdoor motion activated security camera systems detect motion? These cameras are connected to a special sensor called a Passive InfraRed or PIR sensor. When an object passes in front of the sensor, the sensor can detect the change in infrared radiation. A relay connected to the circuit board of the sensor then switches the camera on. Most cameras turn off either after the motion is no longer detected or for a specified time period after the motion is no longer detected.

Some examples of uses for outdoor motion activated security cameras include parking lot monitoring, building entrance and exits, pet monitoring, and perimeter monitoring of homes, yards, buildings, and industrial areas.

An outdoor motion activated security camera system can save time and money. It can enhance the use of wireless, rechargeable battery operated cameras and it can conserve DVR storage space for use when it is most needed.

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