Posts Tagged ‘ smartphones’



Digital Surveillance Software

Written By:
Wednesday, February 2nd, 2011

The term “digital surveillance software” refers to a broad category of computer based sets of instructions that provides the instructions for either a computer or a computer based device to operate, control, and/or process binary (digital) data used or created for security and surveillance purposes. To narrow this definition down a little for the purpose of this article, digital surveillance software is the collective set of programming used to create digital video images for security and surveillance purposes.

Since the words “digital surveillance software” refer to such a broad definition, it may be easier to explain what it is based on how it is used and what it does. There are basically three broad categories of digital surveillance software. The first applies to standalone digital video security and surveillance systems; the second applies to personal computer based digital video security and surveillance systems; and the third and final category, for the purpose of our discussion, applies to smartphones and similar type devices used with digital video and surveillance software.

Standalone Digital Video Security Systems
A standalone digital video security system is a set of devices that are used for security or surveillance purposes to create digital video files that may or may not be recorded. The term “standalone” indicates that these systems do not require any additional assistance from exterior devices such as a computer. The digital surveillance software used in these systems can include the operating system of the Digital Video Recorder’s or DVR’s and any additional programs used on that system to control the various devices of the standalone system

A standalone digital video security and surveillance system in its basic configuration includes one or more digital video cameras, a DVR unit with a Digital Signal Processor or DSP, and a digital based monitor. In a standalone system, the cameras send their digital video data to the DVR where the DSP compiles the data using a CODEC or COmpression/DECompression utility to create digital video files. The files are then viewed on the digital monitor and or stored for later use on a hard disk drive on the DVR.

The digital surveillance software in this system can include:
1) The operating system of the DVR/DSP unit;
2) The CODEC utility program; and,
3) Any other specialized set of instructions to control the equipment.

For example, Security Camera King offers three major types of DVRs; our Elite mini series, or Elite series, and our Ultimate series. These standalone systems have a highly specialized DSP that creates digital video files and coordinates the functions between the three major devices of the system. This is usually referred to as the “operating system” and all of our units use a Linux based operating system.

The CODEC utility is a specific software program that is used to compile the video data into a digital video file. Digital video is actually several digital photographs taken in succession. Different rates may be used but a general standard is 29.9 frames per second or fps. This means the camera takes 29 digital pictures in one second so in one minute of video, the camera takes approximately 1800 pictures. You can see how the file size can become enormously large in a very short period of time.

The CODEC uses mathematical algorithms so the file size is a fraction of the original total size. This piece of digital surveillance software does this with very little loss of quality. There are many different types of CODECs such as MJPEG, MPG, H.264, etc.

A standalone system may also contain digital surveillance software that operates the equipment, including specialized functions. For example, Pan-Tilt-Zoom or PTZ cameras can move horizontally, vertically, and can enlarge objects. These movements may be controlled by digital surveillance software.

Personal Computer Digital Video Security Systems
There are digital video security systems that utile a personal computer to take the place of the DVR, DSP, and or monitor. Normally these systems contain a PCI card or similar printed circuit board that performs the bulk of the systems needs including storing the digital video files, controlling devices, and displaying the video on the computer’s monitor.

Any of the software associated with these functions, in essence, can be considered digital surveillance software.

Smartphones
Smartphones require small programs in order to adapt or interface with different systems and devises. These programs are called applications or “apps.” An app can also be of a digital surveillance software type.

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CCTV Digital Recorders

Written By:
Wednesday, January 26th, 2011

If you are considering the purchase of a security video system and are unsure as to whether you should purchase a DVR or a CCTV digital recorder, you MUST read this article. In the following text we’ll answer this question and many more about CCTV digital recorders and describe three of Security Camera King’s featured units.

So to answer the original question, DVR or CCTV digital recorder? The answer: They are both the same device; whether it’s called a DVR or CCTV digital recorder, it’s still the same piece of equipment. The terms may be confusing because of the evolution of the video security system.

Originally, video security camera systems were analog systems. The video camera was basically just a small version of a television studio camera that was used to record analog video. The term “CCTV” or Closed Circuit TeleVision was used to indicate the difference between a television studio camera that broadcasted its signal via OPEN radio signals to anyone that wanted to receive it and a video security camera that used a CLOSED circuit to send its signal to a designated device.

Analog systems used video recorders, but they recorded the signals using analog methods on tape, such as VHS or Beta. These analog system recorders were either referred to by the tape type designation or were simply called video recorders.

Current video security systems are digital systems. The recorders that are used in these systems are called Digital Video Recorders or DVRs. Basically the terms DVR, CCTV DVR, Digital Recorders, and CCTV Digital Recorders all refer to the same device, a digital video recorder.

There are several advantages to a digital system as compared to an analog system. CCTV digital recorders can instantly jump or skip to a specific time or date recording. Analog tapes had to played and searched while playing to find a specific segment. Digital recorders also save video in digital or binary format so there is no degradation of the quality of the recorded video over time.

About Security Camera King’s CCTV Digital Recorders
Security Camera King offers high-quality CCTV digital recorders that use the latest digital video technology, offer the most features, and use the latest, most efficient CODEC (more about CODECs in a minute). Our three featured CCTV digital recorders are the Elite Mini DVR, the Elite DVR, and the Ultimate DVR. Each of these units is available in four, eight, and sixteen channel units. (In this case “channel” means input or camera, so this is the number of individual cameras or inputs the DVR can handle.)

All three models of CCTV digital recorder use the H.264 CODEC. CODEC is an acronym for COmpression/DECompression. Digital video security systems create digital video files which consist of nothing more than several digital photographs taken in succession in a short period of time. High-quality fluid digital video is often taken at a rate of 29.9 pictures per second or frames per second or fps.

Consider the potential size of a file for one digital photograph; now imagine if you took 30 of these per second. In 60 seconds you would have an uncompressed digital file 1800 times the size of one picture. This size ratio is far too big for even the fastest processors to handle, so the CODEC is an algorithm that is used make this files much easier to handle and store by shrinking their size without sacrificing quality. The H.264 is the latest, most efficient digital video CODEC available.

All three of Security Camera King’s CCTV Digital Recorder models feature an embedded Linux operating system and Internet Protocol (IP) ready features that include internet networking, e-mail alert notification, and access via one of several varieties of smartphones. Our CCTV digital recorders are standalone systems; they can operate without the use of a personal computer (which could be vulnerable to viruses, hacking, and other invasions).

In addition, all of our featured CCTV digital recorders have HDMI, VGA, DNC video outputs with a display resolution of 720 P. This means that more than one monitor can be used with the unit at a time. In fact, with the included Matrix output you can pick and choose your monitor display options.

Our CCTV digital recorders are easy to setup and operate. Their software is a mouse-based point-and-click Graphical Users Interface with an On-Screen Display. The operation is so simple that there is even an included infrared remote control.

For additional information about our CCTV digital recorders, please contact one of our security experts.

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