Posts Tagged ‘ analog systems’



CCTV Home System

Written By:
Friday, September 16th, 2011

If you are looking for peace of mind as far as the security of your home is concerned, try a Closed Circuit TeleVision or CCTV home system.  Today’s systems are so versatile that there is hardly an application that can’t be covered by digital video security.  And, there are many different types of systems for just about every application and budget.

Because electronic and especially personal computer technology has advanced so quickly CCTV home systems have become so versatile that it’s actually hard to find an application that they can’t cover.

First, the term “CCTV” is a carryover from the earlier analog systems.   A CCTV home system was so designated because the entire system was connected by cable in a closed circuit.  This was contrary to a typical studio analog system where the camera recorded the image and past it along to a control room where it was manipulated and amplified and sent out to a fairly large and tall antenna.  Under this system, anyone with a TV could become part of the system (by tuning their TV to the right channel).

A closed circuit television system by comparison was designed to be seen by only those who were directly hard wired into the system, hence the term “Closed Circuit.”  Today, the term is used a little more loosely, but the general meaning still applies.  Even though there are cameras that are wireless and therefore transmit their signals via an on-board antenna, the radio signal is usually a vary specific frequency that designated receivers or DVRs possess to receive the information.  In other words, a CCTV camera security system is still meant for only those people to receive that are within the defined circle of users.

CCTV home systems are rapidly becoming the system of choice for monitoring and protection for residential applications.  One of the reasons for this is because the system is digital.   Since the system is digital, it is able to share a lot of the same equipment and programming as a typical personal computer. This has great beneficial implications for a CCTV camera security system.  For example as hard disk drive technology increases creating storage capacities well into the Terabyte (TB) range, the video security camera system can take advantage of this large storage because video files are stored on such a mechanism.  Greater storage capacity yields a longer turn around time before the DVR re-writes older video files with new ones.

Today’s CCTV home systems are basically component systems which provide even more flexibility.  Generally, cameras and other peripherals to the Digital Video Recorder can be mixed and matched to the users’ utmost benefit.  For example, a typical 8 channel system may have 2 vandal proof dome cameras, an indoor box camera, 3 outdoor dome cameras that also have infrared “vision,” a door monitor camera with two way audio, and a Pan-Tilt-Zoom or PTZ camera covering the driveway and street entrance.

Security Camera King offers a tremendous variety of components to create your own tailor-made system.  Basically, these systems are based on the DVR’s that coordinate them.  Therefore, Security Camera King has 4 of their own proprietary DVRs so we’ll take a quick look at the four.

Elite Mini Economy
This DVR carries the same basic features as the other DVRs with a few exceptions.  It only has VGA and BNC connectors (no HDMI).  A PTZ control interface is also absent on this entry level DVR.  This DVR can record CIF quality on all channels at once, with D1 quality on channel one, all at 30 fps.

Elite Mini HD
This system has everything the Elite Mini Economy has except it does have an HDMI interface and can display high definition at 1080 p.

Elite Series
The Elite series has a multitude of features.  It offers everything the Elite Mini’s offer and more.  For example, in addition to camera hooks up that Elite DVR can accept alarm input channels and alarm output channels.  It can produce a display in High Definition (1080p) but also has video loop output options as well as video matrix output.  This DVR also contains a DVD-RW burner for making backups of digital video files held in storage on the hard drive.  PTZ control is also available on this model.

Ultimate Series

The ultimate Series has everything that the Elite has to offer with the significant difference being in recording power.  The Ultimate Series DVR package includes 520 TVL cameras and can record 704-480 at 30 fps on all channels simultaneously.

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Tilt and Pan Camera

Written By:
Friday, September 16th, 2011

Tilt and Pan or PT cameras bring a powerful punch to the benefit of the digital video security and surveillance world.  These cameras allow your system to reap the powerful benefit of camera movement.  Most PT cameras also offer a third feature, zoom.  When this is the case the camera is usually referred to as a PTZ camera.

PT cameras have been used in the video security and surveillance world for quite some time; even when the systems operated in a totally analog format.  However, as technology has increased, cameras have become more powerful in function and lighter in weight as well as more versatile in application.  Now, digital video cameras with PT functions are much more easily controlled.

Most of the older analog systems usually required a separate, big, bulky controller board that connected to the Digital Video Recorder or DVR unit to manipulate PTZ cameras.  This board was proprietary in that it was the only device that could be used to tilt and pan cameras.  However, since video security cameras have left the analog genre and become digital, there has been some merging that has occurred with the personal computer world.

There are still separate controller boards available for use with digital PT cameras, but these cameras can also be controlled by using software and a personal computer.  Many systems are now based on personal computer Graphical User Interfaces or GUIs and the PT functions can be controlled by a computer mouse or keyboard strokes.

One of the primary benefits of a tilt-pan camera is that one PT camera can literally take the place of several non-PT cameras.  Since these cameras can move in two dimensions and enlarge views as well providing they have zoom technology), they can cover the field of vision that would normally take several non-PT cameras to cover.  PT web cameras have many uses and are great for monitoring large areas such as parking lots, industrial property, and even high
ways.

Having one or more PT cameras is certainly a powerful advantage, but if these cameras are also PT Web cameras, their versatility in application and ease of access is incredibly increased.  A PT Web camera utilizes the Internet as the networking solution for the system thereby broadening the scope of access globally.

PT Web cameras are also known as IP ready or Internet Protocol ready cameras.  These cameras have built in web server technology so that the camera can connect directly to the Internet.  Once the Internet connection has been established these cameras can be used in many ways.

For example, more than one Tilt amd Pan Camera camera can be networked together using the Internet to carry their signals to a remotely located Digital Video Recorder or DVR unit that can record their digital video data.  Another way PT Web cameras can be used is as individual cameras that use the Internet to send their digital video data to personal computers which are used to monitor and record their digital video data.  This has great implications.

PT Web cameras that are connected to the Internet can be accessed anywhere in the world there is broadband Internet access.  This instantly converts the accessibility of the camera from a local system to a globally accessible system.  In addition to monitoring these cameras anywhere there is Internet access, these cameras can also be controlled remotely from the same point.

This access is not limited to only a personal computer with an Internet browser, but 3G and 4G smartphones can also monitor and control these cameras.  This means you could be sunning on the beach in Australia while panning, tilting, and monitoring your PT web camera security system in Paris.  What more is the only thing needed to use your smartphone to do this is the small software application or app; and Security Camera King makes smartphone apps available for their featured security systems for free.

In addition, tilt and pan cameras can also be programmed to track or follow moving objects.  This auto-tracking option is great for keeping a close eye on moving objects in the cameras field of vision, especially if the field of vision is not expected to contain moving objects.

So if you have the need for a digital video security cameras that can “look” left and right, up and down, consider purchasing a tilt and pan camera

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CCTV Digital System

Written By:
Thursday, January 27th, 2011

CCTV Digital SystemNothing can provide the power of security and surveillance better than a Closed Circuit Television or CCTV digital system. Analog digital security provides adequate security and surveillance, but with the advent of the CCTV digital system there are far more beneficial features and options available. In fact there is a CCTV digital system for just about every security or surveillance situation.

A standard CCTV digital system is based on components. That means that individual devices (i.e. components) can usually be mixed and matched to adapt to a variety of uses to create the ultimate CCTV digital system. The three components, digital cameras, Digital Video Recorders or DVRs, and monitors provide the flexibility of versatile applications while maintaining the power and integrity of a single, complete and easily controllable system.

CCTV digital systems are expandable so they are great for both residential and commercial applications. Security Camera King offers the “Complete 16 Channel (i.e. 16 camera inputs) DVR Ultimate Security Camera Package with Bulk Cable” as its finest, top-of-line digital system. Although this package can handle sixteen channels which is adequate for most security applications, if more cameras are required, additional cameras with an additional DVR can be added.

CCTV digital system camera’s have a wealth of features and options to make them applicable to almost any application. In addition to the standard box, bullet, or dome shaped cameras CCTV digital systems can easily employ the use of covert video surveillance cameras such as hidden or disguised cameras. This is possible because the digital cameras can be manufactured in such incredibly small sizes.

In addition, the electronic sensor inside the camera that converts the light energy emitted by the objects in the camera’s field of view can also inherently detect near infrared radiation. In fact, most non-infrared cameras have an infrared filter over the sensor to block out the near infrared light. This inherent ability to detect infrared radiation makes the camera an excellent choice for night time or total darkness video monitoring applications. The camera’s sensor can detect the infrared light but it is invisible to the human eye.

Other optional features of CCTV digital systems include using the Internet for networking cameras or DVRS and for providing access to CCTV digital systems anywhere in the world that there is broadband Internet access and a suitable device (computer or smartphone).

CCTV digital systems can also have object tracking or following as part of the software that is supplied with either the DVR or Pan-Tilt-Zoom (PTZ) cameras. Object tracking makes CCTV digital systems an excellent choice for commercial parking lots or for following individuals in open spaces.

Digital Video Recorders, like their analog ancestors the VHS or Beta video recorder, can store digital video files for later use or archiving, or can render them in real-time for live viewing. Security Camera King’s featured DVRs even have the ability to stream the digital images from our CCTV digital systems over the Internet. Unlike analog recording mediums, long-term digital storage media (CDs and DVDs for example) don’t allow the quality of the video image to degrade over time.

The third component of the CCTV digital system, the digital monitor, has also offered vast improvements over its analog ancestor the CRT monitor. Digital monitors can provide High Definition (HD) images or several camera images on just one monitor. In addition, these monitors are much lighter so they can easily be wall or ceiling mounted. Furthermore, they use a lot less power to produce their pictures than their older counterparts.

Finally, since every component of a CCTV digital system now operates based on digital data, many of the individual electronic parts of the system are the same parts used in the personal computer world. CCTV digital system cameras are similar to webcams; DVRs are similar to computer hard disk drives; and security monitors are similar to computer monitors.

This provides for an enormous advantage over older analog systems. Much of the equipment used in CCTV digital systems takes advantage of the vast technological advances that are made in the personal computing world. Not only do the systems reap the benefit of technological advances, but the systems themselves are much more versatile in use and are lower in price.

If you have any additional questions about the individual components of a CCTV digital system or are considering the purchase of a CCTV digital system, contact one of our security experts today. They are easily accessible via the “Live Chat” option or by telephone.

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