Posts Tagged ‘ Internet Protocol (IP)’



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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Spy Camera CCTV

Written By:
Thursday, December 2nd, 2010

Covert digital video camera monitoring and recording is sometimes referred to as spy camera CCTV. Although the term “spy” may conjure up images of secret agents, under cover operatives and the like, a spy camera CCTV system can have very practical applications suited for every day residential and commercial applications.

It is possible to describe process of digital video monitoring and/or recording as either overt or covert. Overt digital video systems operate without an attempt to disguise or hide the equipment in any manner. In fact, many systems are installed in such a way as to be obvious, since there is an added advantage of deterrence of criminal acts associated with video security systems.

However, there are many applications where the process of digital video monitoring and/or recording is required without the subject being aware of the presence of any video security equipment. These are called covert video systems or spy camera CCTV (Closed Circuit Television). Sometimes the interpretation of the words “spy camera” are so loosely interpreted that some use it to mean any type of video security type camera.

The acronym “CCTV” in spy camera CCTV is basically a term that originated to describe or differentiate the system from an “open” broadcast system. When video cameras were first used for security systems, the cameras were analog cameras that were basically miniature versions of the video cameras used in television stations to record live shows and newscasts. Television cameras however, sent their signal to a powerful transmitter and antenna that openly broadcast the video to anyone that could receive it (owned a television).

Video security systems including modern digital video security systems send their video signals via a video transmission cable, usually an RG-59 type coaxial cable. These cables carry the signal from each camera to the video recorder or Digital Video Recorder (DVR) and are not openly broadcast, hence the term “Closed” Circuit Television. Spy camera CCTV is covertly designed video monitoring and recording that is wired in a closed circuit.

With ever increasing technological advances, including wireless digital video cameras and Internet Protocol (IP) ready cameras, it may be necessary to broaden the definition of CCTV a bit. Since these cameras do broadcast a signal using radio waves or utilize the Internet as a networking medium, it is difficult to say they are working in a closed circuit. However, the intent is still the same and that is; the video signal is only intended for a specific receiver or receivers and is not intended for open broadcast to the public.

Spy camera CCTV systems today are exceptionally good and disguising or hiding themselves. That’s because the digital video cameras have been able to take advantage of the tremendous technological innovations in computing and electronic circuitry. Sensors, lenses, and Integrate Circuit (IC) chips can be integrated into unusually small packages making the camera easy to hide or disguise.

For example, Security Camera King offers an ink pen (our product # HC-PEN) or a wrist watch (our product # HC-WATCH) that contain a color spy camera CCTV complete with a color video camera, audio recording, and a Digital Video Recorder or DVR!

Other spy camera CCTV systems may include several hidden or disguised cameras or a combination of covert and overt camera types. Security Camera King offers a huge selection of spy camera designs including cameras disguised as:
• Wall clocks;
• Exit signs;
• Buttons;
• Screw heads;
• Speakers;
• Telephones; and
• Many other objects.

These cameras can be connected to typical digital video monitors and DVRs to create custom designed spy camera CCTVs. Not only have these systems benefited from technology that permits them to be incredibly small, but they have also benefited from technology to improve in function.

For example, there are two different types of electronic sensor chips used in digital video cameras today that transfer the light from images into electrical energy that can be used to create video images. Not only can these sensor chips create video images, but they are inherently able to detect infrared light (light that the human eye cannot see) as well. With the proper filters and lights, these cameras can record video in total darkness conditions.

If you are looking for specific type of spy camera CCTV check out Security Camera King’s wide selection of cameras and equipment. Spy cameras and equipment can be found by clicking on the left hand side of our web pages, “Security Cameras” then “Hidden Security Cameras” or “Hidden Camera Systems.”

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