Posts Tagged ‘ digital video security system’



LCD Baby Monitor

Written By:
Friday, February 11th, 2011

Parents of newborn babies can get the peace of mind and rest they deserve by using a Liquid Crystal Display or LCD baby monitor. These devices are actually highly specialized digital video security and surveillance system devices designed specifically for monitoring babies and even young children. They offer the flexibility of operating as a standalone device or being tied-in to a larger whole-house digital video security system. Most LCD baby monitors also have the versatility to be used just about anywhere inside the home, not just in the nursery or baby’s sleeping area.

An LCD baby monitor that is part of a larger whole-house digital video security system is usually a camera placed in the baby’s room and aimed at such an attitude as to capture the baby while sleeping and/or awake. The camera may be permanently mounted and connected to the system’s Digital Video Recorder or DVR unit by a video transmission cable or wirelessly.

Although recording baby monitor footage is not necessary or usually desired, the DVR unit can record the digital data but is normally used to process the camera’s digital video output and make the video available for live viewing on an attached monitor.

Standalone LCD baby monitors are probably more popular than typical system monitors. By marketing standalone LCD baby monitor units, the user is not required to purchase an entire full-size system, thereby reducing the total cost tremendously. In addition, the camera contains a built-in wireless transmitter that sends the digital video signal via radio waves to a corresponding wireless receiver built into an LCD monitor.

A wireless standalone LCD baby monitor is one of the more versatile types, as it allows for easy repositioning of the camera from one place to another within a room or from one room to a different one. In addition, the wireless LCD monitor provides the convenience of portability so that the parent can monitor the baby from the kitchen, living room, parent’s bedroom or anywhere else in and around the house.

Most wireless LCD baby monitors operate from power supplied by batteries, either one-time use or rechargeable, both in the camera and the monitor devices. Of course there are models available that can also utilize household power outlets as well.

Another option that comes with many LCD baby monitors is a night vision infrared camera. The sensors used to convert the light images into electronic video images in digital video cameras are inherently sensitive to infrared light in the near infrared spectrum. During the day, these cameras produce high quality color video images and at night or in darkness, they produce a high quality black and white or monochromatic video image.

The infrared cameras can produce images in total darkness because the camera illuminates the target area by using infrared Light Emitting Diodes or LEDs. These LEDs are normally arranged in an array around the lens of the camera or off to the side, so as to direct their infrared light in the same direction as the camera’s field of vision.

The night vision infrared LCD baby monitors with infrared LEDS are quite a blessing to parents and other caretakers because although the camera sensor can “see” the infrared illumination just like visible light, the illumination is invisible to the human eye. This means the baby can be monitored in total darkness under infrared illumination without ever being disturbed by the light!

Generally, most infrared LCD baby monitors will require a house current outlet for power supply, because the power demands are higher since the camera also must furnish the electricity for the LEDs. These cameras are readily available in a variety of different types and styles for whole-house type digital video security systems, but may be a little more difficult to obtain in the standalone battery-operated design.

Finally, since today’s technology allows for camera units to be manufactured in such small sizes, an LCD baby monitor camera can easily be disguised as something else so as not to frighten or disturb the baby or young child. For example, check out Security Camera King’s “2.4 GHz Wireless Dog Baby Monitor Camera” product number HC-BBMNT-GC under our “Wireless Hidden Cameras“. This camera even includes a microphone to record audio.

If you have any questions about an LCD baby monitor or are considering purchasing an LCD baby monitor unit, contact one of our security experts today via “Live Chat” or toll free telephone at 866-573-8878.

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Security Power Supplies

Written By:
Thursday, February 3rd, 2011

Security Power SuppliesSecurity power supplies are used to run burglar alarms, safe mechanisms, and digital video security and surveillance system equipment. There are many different types of security power supplies. In the following article we’ll focus on mainly those that apply to digital video security cameras.

There are several different components in a digital video security system, mainly cameras, a Digital Video Recorder or DVR, and a monitor at a minimum. Other components could include illuminators, transmitters, and receivers. All of these components are electronic so they must rely on some sort of electric power (or security power supply) in order to work properly. The majority of these devices simply plug into any standard wall outlet. However the camera security power supply is different. Let’s take a closer look at the security power supplies demand for the digital video camera.

The powers demand of the video security camera seems to become smaller as the technology behind the electronic parts of the camera become more advanced. Thankfully, unlike many of the older analog cameras, today’s digital video cameras require much less power than their analog ancestors. In fact the power demands of these cameras can be so small that many cameras can actually be battery operated.

Most digital video security cameras do not require the equivalent of power delivered by a standard household outlet; that is, they do not require 110-120 volts (V) of Alternating Current (AC). In fact the majority of cameras today operate on either 24V AC or 12V Direct Current (DC) power. To accommodate these power requirements a step-down transformer is normally required to reduce average household current into the power types required by the cameras. This is normally done in one of two ways.

The first method used to reduce house current power and make it available for security cameras to use is a plug-in transformer. Like many electrical appliances used today, the plug-in transformer is package inside of a small plastic box-like shape. This is plugged into a house outlet, and the resultant outputted power is carried along a wire with a “female” circular jack that is plugged into the camera.

There may be a variation on this theme. For example, some security power supplies that are of the plug-in transformer type can provide power to more than one camera at a time. For example, some Security Camera King’s four channel and eight channel security camera systems come with plug-in security power supplies that can power up to four cameras at once (eight channel systems have two plug-in security power supplies).

The other method used to reduce house current power and make it available for security camera use is the power distribution box. Power distribution box security power supplies are circuit boards mounted inside a protective metal housing. The circuit boards provide connectors for pairs of wires to provide power to the individual cameras in the system. There are power distribution boxes that range in number of outputs available from four to sixteen.

There are advantages and disadvantages to each method. For example, the single plug-in transformer allows the user to access a standard outlet near a camera which is great for cameras that may be near a power source but are quite a distance away from where a power distribution box would be located.

On the other hand, power distribution box security power supplies provide the power for up to sixteen cameras by using only one power source and not sixteen individual outlets. There is no universal answer as to what method is best to use; the method depends on your specific digital video security application.

Digital Video cameras may also use batteries as their source of security power supply. As mentioned earlier, as the power demand requirements reduce with improvements in technology, many cameras can now operate using standard battery size security power supplies. These are especially useful for cameras that need to be mounted in locations that make running a power supply wire difficult.

There are also some “portable” security cameras that can use an automobile’s power supply. Digital video cameras used as bus security cameras, back-up cameras, and other vehicle-related uses are usually adapted to using the vehicle’s 12 V DC current as a security power supply.

If you’re not sure what type of security power supply you need for your digital video security system contact one of Security Camera King’s security experts today. They can help you determine what you need and suggest what type of power supply is best for your configuration.

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Camera Video Monitor

Written By:
Tuesday, January 25th, 2011

A camera video monitor is used to view either the field of vision being captured by one camera or by a series of cameras in a digital video security system. Digital video camera monitors have made great strides in technological improvements in the last several years producing a higher quality, lighter, and more adaptive piece of digital video security system equipment.

It’s important to understand a little about the history of camera video monitors in security camera systems and how they used to work compared to how they work today. Let’s take a closer look at a camera video monitor.

First, we should identify the three main components of a video security system. That includes one to several video cameras, a video recorder, and at least one camera video monitor. Note that the word “digital” did not appear in the previous two sentences because we are referring to the older analog video security camera systems.

The older analog video camera systems consisted of analog video cameras which were basically miniature version of cameras used in an average television studio. However, since television cameras “broadcasted” their signal to the general public, security video cameras were often (and still maybe today) referred to as Closed Circuit Television or CCTV. The circuit is closed because the security system camera sends its signal to the video recorder and monitor, a closed circuit, rather than broadcasting it for unrestricted access.

The recorders used in these older analog systems were usually analog video tape recorders such as a VHS or BETA recorder and the monitors were basically miniature televisions. In contrast we use digital video security cameras, Digital Video Recorders or DVRs and high resolution camera video monitors with LCD, Plasma, or LED displays today.

The older “tube” type television camera video monitor and the analog video camera, worked with video in terms of “lines of resolution.” Without getting overly technical, the quality of these displays was much lower than today’s typical Plasma, LCD, or LED camera video monitor since the tube projected the image in alternating “lines.” Today the image is made up of pixels, extremely small dots or squares that can provide a much greater (or finer) resolution, and therefore a much higher quality display image.

Often times, older analog cameras would require an individual camera video monitor for each camera. Today however, depending on the size and resolution of the display, all of the cameras within a system can be displayed on one monitor. In fact, the digital video security systems used today do not require a camera video monitor to operate. A monitor is used to set the system up initially, but may be removed after the initial settings have been made. Yet, the monitor is still the component with the highest use since it is used to view live or recorded video in one way or another.

Of the three types of camera video monitors used today, the LCD is the most prevalent. Since video security systems have become digital, they have gained access to many of the technological improvements of personal computers. Therefore, monitors that are currently used for personal computing may also be used for digital video security systems with one provision; the monitor must have the capability to display using the output connectors for the system.

Personal computer monitors typically have VGA (Video Graphics Array), DVI (Digital Video Interface), or HDMI (High Definition Multimedia Interface) connectors for video input. Security digital video cameras however still utilize RG-59 coaxial cable with a BNC (Bayonet Neill-Concelman) connector. Most computer display monitors do not have BNC inputs; most security camera video monitors DO have BNC inputs.

This is important because if you choose to place a monitor on a single or specific camera, chances are it will need a BNC input connector. While most DVRs have BNC connectors for the camera inputs, they usually have several different output types to the monitor (VGA, DVI, and HDMI for example). When you purchase a camera video monitor for your security system, just make sure the outputs of the cameras and/or DVR matches the input connections of the monitor.

Security Camera King offers a wide variety of camera video monitors available for purchase. What’s more is that we also have BNC to VGA Monitor Converters available which allows you to view your video security camera with a BNC connector on a VGA monitor. In addition we also have monitor mounts available. For more information, talk to one of our security experts.

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Security Flood Light DVR Camera

Written By:
Thursday, January 20th, 2011

Nothing says “”Gotchya!” to a potential intruder, vandal, or burglar better than a security flood light DVR camera. Thanks to modern technological improvements these devices are an entire compact digital video security system. They can be used in both residential and commercial applications and can be extremely effective when placed in the proper location.

Not only does a security flood light DVR camera help to protect and prevent perpetrators from causing damage or breaking and entering, but it also offers positive deterrence. It’s already been proven by the law enforcement agencies in London, England and New York City that the mere presence of digital video cameras deters criminal activity.

However, the security flood light DVR camera takes it one step further. Not only does it record still digital photographs or digital video images of the intruder, but once the unit senses motion, it snaps on a powerful high wattage flood light illuminating the surrounding area and “spotlighting” the intruder as well.

In addition to protecting homes and businesses, these units are great for protecting other property as well. Boat docks with electricity, barns, storage areas, specific portions of land, back entrances of retail stores, and no-trespassing industrial areas as well can benefit from the protection of a security flood light DVR camera.

The units are relatively easy to install and use as well. Basically, all that is required for installation is to mount the unit, connect it to a standard residential type power line, and select the settings you desire. Then walk away and be confident that your security flood light DVR camera will protect you and/or your family, business, or property.

Before we provide some detail about the design and function of a standard security flood light DVR camera, let’s briefly describe a typical digital video security camera system and how it works.

Most standard digital video security camera systems contain one to several cameras, a Digital Video Recorder or DVR, and perhaps a monitor. The cameras are mounted in various strategic locations and send their digital video data to the DVR unit by means of a digital video cable run from each camera to the unit, or wirelessly using radio signal transmitters and receivers.

The DVR unit, much like a highly specialized personal computer, contains a hard disk drive like those found in computers. The DVR unit processes the digital data and creates a digital video file that can be viewed live on a monitor and/or saved on the DVR for later use.

A security flood light DVR camera is basically a miniature version of the basic system without the monitor. The unit contains all the devices (sans the monitor) within one relatively small, compact fixture. The floodlight is usually a powerful 500 watt halogen flood lamp. These lights can project a powerful beam of light in a relatively wide field of vision.

Connected to the light, DVR, and the camera is an infrared motion detector. The motion detector, known as a PIR or Passive InfraRed sensor, can detect the infrared radiation emitted by the objects in its field of vision. When this “heat signature” changes greatly or rapidly, the sensor interprets this as motion. The sensor activates a relay that switches the security flood light, DVR, and camera on. Depending on the model, the entire unit switches off either after motion is no longer detected or specified time period after the initial “On” state.

When the camera is switched “on” it immediately begins capturing digital video images (or stills), with the flood light helping to provide a crisp, clear, bright picture. An on board processing chip saves the data either as digital photographs or digital video files to the DVR.

The DVR in this case is not a large hard disk drive, but usually consists of an SD card (Secured Digital card), a compact flash card, thumb drive or similar mini-portable memory device. All the user needs to do is remove the SD card, transfer the files to their personal computer and view, print, or make movies disks of the saved data.

Although a security flood light DVR camera cannot provide the extensive precise coverage of a full size standard digital video security system, it does offer an economical alternative and can be quite useful for specific situations. Contact our security experts via Live Chat or telephone if you have any addition questions or would like to make a purchase.

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