Posts Tagged ‘ digital video recorder’

DVR Linux Security

Written By:
Thursday, July 14th, 2011

Security Camera King offers the rock solid operating system of Digital Video Recorders or DVR Linux Security. Our systems are complete standalone digital video systems that require nothing extra to run. They are not dependent on the Internet (although they can be used on the Internet if the owner chooses) and are therefore not subjected to hackers and other potential dangers.

Basically, today’s DVR market is segregated into two different groups according to operating systems, Linux or Windows based. Both operating systems have their pros and cons. For example, most people are familiar with the Windows operating environment and have very few or no problems using this software because of its familiarity.

On the other hand, Linux has proved itself to be a more stable operating environment; its functions are stable enough that seldom does one encounter screen freezes, repeated boot-ups, etc. What’s more is that the Linux OS handles different functions through the kernel in a different way compared to Windows. This creates a faster system that is even closer to UNIX (it actual parent system).

Security Camera King considered these two systems and decided that Linux was the best operational choice. DVR Linux security offers most all of the functions of a Windows operating platform, but does so with greater speed and ease of use of its functions. When it comes to the functions of a DVR, this is extremely important because digital video processing places a heavy load on the CPU especially when recording, displaying, and storing eight different cameras at once for example.

Actually the full name for the Linux OS is called GNU/Linux. Linux is actually the kernel. The kernel is the system program that allocates the machines (in our case the DVR) resources to the other programs that are being run. The actual operating system (OS) is called GNU. Linux handled tasks so quickly that until just recently held the title of OS for the fastest supercomputer system.

Gnu/Linux is a free operating system and was specifically designed that way back in its earliest days around the mid to late 1980′s. Linux uses a type of public domain free software license, making the system free to just about anyone who chooses to use it. Of course this brings another advantage to the table for Security Camera King; using free Linux software saves the buyer money.

Security Camera King features four different DVRs and their accompanying systems including the option to build your own custom built security camera system.  The DVR’s used for these systems, the Elite Mini Economy, the Elite Mini HD, the Elite Series, and the Ultimate Series all have preloaded Linux Operating Systems for long-lasting, durable performance.

DVRs that offer special functions such as automatic operation of a Pan-Tilt-Zoom or PTZ camera for object following and tracking often use programs pre-compiled for the this function.  The latest CODEC being used by the DVR Linux Security System is fully compatible and useable for cross platform capture.  (Cross platform capture means the CODEC, which stands for COmpression/DECompression can run easily on either operating system.  The CODEC reduces the size of the video file while maintaining its quality.)  That CODEC is the H.264 CODEC.

For an example of cross platform use, a video image could be taken using a Linux based DVR but could also play back by using a computer with a different OS (like Windows for example). This is crucial because not only does the CODEC shrink the file (which occurs on the DVR Linux Security System) but it also decompresses the file so that it may be viewed on a Windows Operating System.

In addition to the embedded Linux OS, Security Camera King’s DVR Linux security system also comes with an embedded web server. These DVRs can be set to alert you via e-mail based on a variety of triggers that you choose. Plus, you can access your system directly with another computer or by using your smartphone if you have one. This means you can have total access to your DVR Linux Security system anywhere in the world that you can receiver 3G or 4G smartphone/Internet services.

If you have any further questions concerning DVR Linux Security systems please contact one of our security experts via Live Chat or Telephone today.


Security Video Software

Written By:
Friday, June 17th, 2011

Security video software is a very broad term that can be used for many different functions. Security software is normally a responsibility of the Digital Video Recorder (DVR) as this is where the main computer processor and Digital signal processor are found.

We can easily list all of the security video software applications available but that would create a list too long for this article.  Instead, we’re going to discuss just some of the security video software.  This should give you a good working knowledge of the security video software that is used today.

Let’s begin by identifying the three major components in a digital video security and surveillance system.  They are the camera(s), DVR, and monitor.  Generally speaking the cameras and the monitors do not require and security video software.  These items can be thought of as “peripherals” to the DVR.  Often times these two components may have a vast selection of various functions but these are generally a hard-wired circuit or an Integrated Circuit (IC) chip that is built right into the camera’s circuit board.


So if the camera and the monitors don’t require the use of software in order to be operational, that leaves us one component, the DVR.  The DVR in many ways is like a personal computer that is designed specifically for use as a DVR.  That being said, the first type of security video software is the Operating System (OS) of the DVR unit.  Windows has a variety of OS software such as Windows 2000, Windows XP, and Windows 7.  MAC computers, if they are even compatible with the security system, usually only run MAC operating system software.


All of Security Camera King’s DVR’s use LINUX as their base Operating system.  Linux is also used in many popular systems as an embedded system (part of the hardwiring and not the software) such as it is used in the digital video recorder TiVo.  Although Operating System software may not directly be associated with security video software, that is it doesn’t necessarily contain the programming that tells a camera how to work, it’s still important to mention here to make the reader aware of the OS that the security video software runs on.

One of the first security video software that comes to mind is the software that is used to track or follow objects using a Pan-Tilt-Zoom (PTZ) camera.  This software in essence turns the DVR into a motion detector.  In addition the software coordinates the motion detection of the DVR with the commands given to the PTZ camera to keep the object focused and with the parameters of the camera’s field of view.

Another totally different type of software is specifically intended to be used on a personal computer.  Actually there are two different types of this software.  The first type allows you to use computer Web cams or Net Cams to create a digital video security system.  However, there can be several problems with this system.  First the Web cams are not anywhere near the quality of a security camera.  Another down side to this is that the computers resources will be busy handling and recording the web cams which will cause a slow down in over all computer performance.


The other type of security video software comes with its own PCI card.  The PCI card is installed in the computer and all of the cameras connect to it. In addition, the PCI card may contain hard disk drives, CODEC utilities, and other important utilities that make the strain on the personal commuter’s resources very slight.

There are many other types of software too.  Newer versions of software utilize “intelligent” data that can recognize an individual by their face.  There are also special cameras and software for recognizing license plates clearly and legibly while the car is moving at a high rate of speed.

If you have any questions about obtaining security video software for your personal computer or for any other reason, please feel free to contact our security experts.  Security Camera King has an excellent technical support team that is waiting to help you.  You can contact them by on-line “Live Chat” or via telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.


Digital Camera Security System

Written By:
Tuesday, May 17th, 2011

If you’re looking for a surveillance system that can also bring you “peace of mind” you should consider a digital camera security system.  Burglar alarms are great for notifying you and others of an un authorized entry, but a digital camera security system can do that as well as document the unlawful event and identify the responsible party.

A digital camera security system is reasonably priced, versatile in application, and easy to install yourself, thanks to the tremendous technological improvements in just the last decade alone.  Cameras are no longer big and bulky, analog systems have been replaced by more efficient digital devices, and the Internet is being used in a networking fashion never thought of by the digital video security industry 20 or more years ago.

A digital camera security system consists of one to several cameras, a Digital Video Recorder or DVR, and one or more monitors (after the system is set up the monitors are actually optional).  These systems are component systems, meaning that your digital camera security system can be constructed from devices made by different manufacturers, or of different brands, or even different functional uses.

The ability to “mix and match” if you will, your digital camera security system’s components makes the system incredibly versatile in application and even less expensive in cost.  For example, your design may require 8 cameras including one Pan-Tilt-Zoom or PTZ camera.  It’s not necessary or required to purchase 8 PTZ cameras just for the sake of maintaining unity in type or manufacturer.  This freedom allows you to purchase individual cameras (and other components) with specific functions so you can have a “tailor made” system designed specifically to meet your needs.

For the remainder of this article, we’ll take a look at two of the major components of digital camera security system, the camera and DVR to get a better understanding of the diversity and power of a component setup.


The cameras used in a digital camera security system have one primary goal; to change a light image into an electronic image and submit it to the DVR for further processing.  How it gets that electronic image varies but is based upon the use of one of two sensors that convert the light focused on them by the lens into electronic impulses.

The sensors used are either the Charged Coupled Device or CCD or the Complementary Metal Oxide Semiconductor or CMOS.  Conveniently, both sensors are also sensitive to infrared light.

Some of the features, options, or special functions associated with the digital cameras can include:

  • Total darkness video imagery using infrared illumination;
  • The previously mentioned PTZ camera;
  • Wide angle lens video;
  • Motion detection and object tracking or following;
  • License plate capture at high rates of speed;
  • Hidden or disguised cameras;
  • Wireless cameras;
  • IP or Internet Protocol ready cameras;
  • Explosion-proof cameras; and,
  • Indoor or Outdoor cameras.


While the cameras may be the “eyes” of a digital camera security system the DVR is equivalent to the brain of the system.  The DVR performs several roles in the functioning of a digital camera security system but the main purpose of the DVR is to store or record the digital images sent to it by the camera. It does this by using a special utility called a CODEC (short for COmpression/DECompression) that shrinks the size of the file while maintaining high quality standards.

In addition to storing video files, DVRs are basically the control center for the entire digital camera security system.  They coordinate the performance of all the different components including the cameras and monitors and usually are responsible for special devices as well.

Some of the features, options, or special functions associated with the digital cameras can include:


Some of the features, options, or special functions associated with the DVR can include:

  • Camera controls, especially PTZ;
  • Alerts and alarm notifications;
  • Playback of recorded files;
  • Web server technology enabling Internet communication;
  • Camera capacity of 4, 8, 16, and 32;
  • Audio input and output control;
  • Network control and coordination; and,
  • Record, playback, and streaming resolution.

As you can see, there can be a lot of activity in a digital camera security system, yet by using the component concept of construction these activities can all be handled or designed to the owner’s specification.


Remote CCTV System

Written By:
Friday, May 6th, 2011

There was a time in the not-so-distant pass where a remote CCTV (Closed Circuit TeleVision) system would be unheard of.  Today, thanks to the leaps and bounds of electronic technology, all of Security Camera King’s featured packaged systems include remote control of the system as a standard feature.

Security Camera King offers several different complete system packages and very competitive prices.  These systems are based on the number of cameras and the type of Digital Video Recorder or DVR.  We offer 4, 8, 16, and 32 channel systems that should appropriately fit just about any application.

In addition, we offer 4 different DVRs.  Each DVR has slightly different features (usually on the plus side) that make them suitable for your specific situation.  We offer the Elite Mini Economy, the Elite Mini HD, the Elite Series, and the Ultimate Series DVR systems.  Each one of these systems can be a remote CCTV system.

Before we go any further, let’s create a definition for remote CCTV systems so we know just exactly what we are talking about.  Each one of the DVR systems previously mentioned above come with an InfraRed or IR remote control that can be used to operate the DVR.  By strict definition of remote, each one of these systems qualify as a remote CCTV system.  However, this is not what we are talking about, in this article at least, when we say remote CCTV system.

Our definition of a remote CCTV system is one that can be easily controlled by an individual who is no where near the system.  Here is a good example:

You’re vacationing in Rome and are standing in line waiting to enter the Sistine Chapel, when you suddenly get the feeling you should check back with home because of the escalated rates of vandalism that have been occurring in your neighborhood lately.

So you get out your iPhone and start the application for your digital video system and while you’re standing in line you view each one of your cameras.  In addition, one is a Pan-Tilt-Zoom (PTZ) camera that covers your entire driveway.  You can control this camera right where you are to get a good view of your entire home and drive way after manipulating the PTZ by just using your iPhone.  You find that everything looks ok, and you have a better peace of mind feeling, just before you are ushered into the chapel to view the beautiful art work.

To some, this may sound a little like science fiction but it’s not.  Furthermore, it’s very easy to achieve with this remote CCTV system.  No matter where you are located, as long as you can connect to broadband internet through your 3G or 4G telephone you’ll always have remote control access.

In fact, you don’t have to have a smartphone to operate your CCTV system remotely.  You can even use a personal computer or Mac with a Web browser to access your system remotely and it only takes a couple of minutes to set up the system to do so.

How is this possible?  First, all of our DVRs run on an embedded Linux operating system.  This also includes the technology for an embedded Web server.  Just connect the DVR to a broadband internet perform a little set up work and you’re ready to “Go Remote.”  For those that are techno-savvy, our DVRs also have Dynamic DNS support, another indication of the versatility of these systems.  Since it is not necessary to have a Static DNS this saves you money (normally, Internet Service Providers can provide you with a Static DNS but will do so for an additional monthly fee).

Another function of our DVRs that contribute to the remote CCTV system is email capability.  Instead of checking your system all the time when you are on the road, you can have your system send you an email based on your own criteria.  You can then use your smartphone to access y our system and “see what’s up.”

As you can see, remote CCTV systems are no longer science fiction and are a very dynamic feature for your digital video security and surveillance system.

If you have any additional questions about remote CCTV systems, please feel free to contact one of our security experts.  They can be reached on-line through the “Live Chat” feature or by telephone at 866-573-8878 Monday through Friday from 9AM to 6PM EST.


DVR Security System Cameras

Written By:
Friday, May 6th, 2011

Today’s Digital Video Recorder or DVR security camera systems are an amazing bundle of new high quality technology.  The security camera industry can also thank the personal computer industry as a contributor, because a lot of today’s DVR security camera systems use recently invented technology borrowed from the computer industry.

In this article we are going to describe how a typical DVR security camera system works.

Modern digital video security and surveillance systems are basically component systems.  This means that essentially, the parts of the system are like plug n play items used in computers.  All of the components do not have to be made by one manufacturer, they can differ in function and still work on the system, and they can usually be removed and replaced with something else and the system will continue to work.

This provides tremendous versatility in application because the DVR security camera systems are no longer required to use all of the same components.  For example, an 8 channel system may have 6 bullet cameras and 2 Pan-Tilt-Zoom (PTZ) camera made by a totally different manufacturer.


Let’s take a closer look at how a DVR security camera system (and its individual components) works.  The first component of the system is the camera.  There are so many different type of cameras available today that we do not have the space for this article to cover them all.  Instead, let look at how they work

DVR security cameras possess one primary function; transfer the reflecting light that is in its field of vision into electrical impulses that can be measured, manipulated, and compiled to create a digital video file.  This information is then sent to the DVR and/or monitor for processing and viewing.

The camera does this by using one of two different electronic sensor chips called a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor or CMOS.  Although both sensors work a little differently, the both yield the same end product–the electrical data that can be used to create a digital video file.

This is accomplished by the camera’s lens focusing the field of view onto one of these chips, which generally range from only 1/4″ to 1/2″ square.  When the light strikes the sensor chip, small electrical impulses are created by the pixels in the chip.  Each one can be measured and used to create the data that will be used to display the cameras field of view as a digital video.

At this point the signal is still an analog type signal.  The camera sends this analog data through an analog-to-digital processor chip to convert the data into digital or binary format.  The camera also contains a Digital Signal Processor or DSP chip that is used to make fine adjustments to the data.  Once the digital information is ready it is sent via a video transmission cable or other means to the DVR, hence the name DVR security camera systems.

Once the signal reaches the DVR, it applies its own DSP technology along with a CODEC utility.  Codec is an acronym for COmpression/DECompression.  This utility program uses a special algorithm program that reduces the incredibly large file into just a fraction of its original size without sacrificing significant quality.  Once this is accomplished the digital video file is compiled and is saved on the DVR’s hard disk drive and/or displayed on a system monitor.

It should be easy to see now why DVR security camera systems benefit from technological improvement in the computer world.  Many PC based devices are used in security camera systems.  For example, the DVR saves the digital video file to its hard disk drive for storage.  USB Thumb drives can be used to update firmware and copy and transfer video footage.  DSP and memory chips are directly related to the computer industry.

Even the monitors used today are basically the same as computer monitors but they may include a few extra input options.  Monitors have gone from the bulky Cathode Ray Tube (CRT) type to the LCD type just like most computer monitors.

Security Camera King offers a wide selection of DVR security camera systems with everything you need to install it but the tools.  Try one of our systems, the Elite Mini Economy, the Elite Mini HD, the Elite Series, or the Ultimate Series and see for yourself.  The majority of our cameras come with a 1 year full warranty (some models have 2 years) and our DVRS have a 3 year warranty.