CCTV Color
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 Dome Camera 420TVL Sony 1 3 Color CCD 05lux for CCTV DVR Surveillance Systems $19.99 Time Remaining: 5d 20h 52m Buy It Now for only: $19.99 |
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A Chinese girl in front of The CCTV Tower (China Central Television), Beijing, Photo Mugs
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DescriptionA Chinese girl in front of The CCTV Tower (China Central Television), Beijing, China, Asia. |
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CCTV TV station HQ by OMA Rem Koolhaas architecture studio, built in 2009, Photo Mugs
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DescriptionCCTV TV station HQ by OMA Rem Koolhaas architecture studio, built in 2009, Central Business District, Beijing, China, Asia. |
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New CCTV Central Chinese Television building designed by Rem Koolhass of the Photo Mugs
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DescriptionNew CCTV Central Chinese Television building designed by Rem Koolhass of the Office for Metropolitan Architecture (OMA), in Guomao CBD, Beijing, China, Asia. |
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Wireless Color and Night Vision Camera Receiver NEW
List Price: |
DescriptionThe NiteEye ultra-compact video camera system is designed to provide quality video, day or night, without being noticed. Perfect for people who want to find answers to questions like, "Who ate the cookies?" or "Who keeps spray painting my wall?" The NiteEye's compact size, indoor or outdoor use coupled with its ability to film full color video in the daytime or IR video at night makes this pocket-sized video camera the solution to your evidentiary problems... |
![The Good Fight - The Abraham Lincoln Brigade in the Spanish Civil War [VHS]](http://www.romehousing.com/media/images/i/211MEV5R72L._SL75_.jpg) |
The Good Fight - The Abraham Lincoln Brigade in the Spanish Civil War [VHS]
Sale Price: $50.00 |
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Wireless IP Pan/Tilt/ Night Vision Internet Surveillance Camera Built-in Microphone With Phone remote monitoring support(Black)
Sale Price: $44.68 |
DescriptionSpecs: |
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Cisco-Linksys Wireless-N Internet Home Monitoring Camera
List Price: |
DescriptionSend live audio and video to a smartphone or web browser anywhere in the world! The Cisco-Linksys wireless-N internet home monitoring camera connects to your network wirelessly, and delivers a live audio/video stream to a smartphone or browser anywhere... |
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PanaVise Model 201 "Junior" Miniature Vise
List Price: |
DescriptionThe PanaVise 201 "Junior" miniature vise is a combination of quality workmanship and durability, ease of adjustment and available accessories. Designed for use in small projects requiring precise soldering, gluing and tool work, the 201 Junior miniature vise features tilt adjustability up to 210-degrees along with 360-degree turns and rotations, fine and course clamping abilities, grooved jaws for easy holding power, heat-tolerant jaws, compatibility with other vise components and more... |
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Taiji Wudang / Cctv Documentary / Chinese Only / 5 DVD / PAL
Sale Price: $59.99 |
DescriptionTAIJI Wudang / CCTV Documentary / Chinese only / 5 DVD / PAL Region: All (Worldwide) Introduction |
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Dream of the Red Chamber Collector's Edition (36 Episodes)
Sale Price: $58.00 |
DescriptionDream of the Red Chamber (simplified Chinese: ???; traditional Chinese: ???; pinyin: Hóng Lóu Mèng; Wade-Giles: Hung Lou Meng), composed by Cao Xueqin, is one of China's Four Great Classical Novels... |
A Primer On Closed-Circuit Television (Cctv) Systems
BY definition, Closed-circuit television referred to as CCTV uses video cameras to transmit a signal to a specific place on a limited set of monitors. The technology differs from broadcast television because the signal is not openly transmitted even though it may use point-to-point wireless links.
Used most frequently for surveillance, CCTV is used in areas that may need monitoring. The examples are endless but most common examples include use at banks, airports, retail shopping centers, correctional facilities, military installations, convenience stores, airports, courtrooms, and factory floors. Although not typically top of mind, CCTV is also commonly used as a tool for distance education, making the virtual classroom more of a reality for teaching.
Frequently found at the shop floor and in industrial plants, CCTV is used to observe the parts of a process or production line from a central control. This is especially helpful when the environment is not suitable for human workers. Examples of this would be processes in a chemical industry, the interior of reactors or facilities for manufacturer of nuclear fuel. Temperatures of processes can also be measured by thermo graphic cameras.
The technology of CCTV can work continuously or only as required to monitor a particular event. An event would trigger or alert the CCTV to activate; the event may very well also trigger a phone call, an email, SMS, or other notification for action to take place. Many cities and motorway networks make use of extensive traffic-monitoring systems. CCTV is used to detect congestion and send alerts about accidents. Web applications, that use this type of data, now sit on your laptop or is streamed to your mobile phone and assist with your travel plans.
Footage which is captured from the CCTV is typically stored for later use. Advancements in miniaturization and speed, allow recordings to be stored for many years utilizing a device called a digital video recorder (DVR) or a personal video recorder (PVR.) These devices record video in a digital format and the data is stored to a hard disk drive, a USB thumb or key drive, memory card or a variety of other memory medium within a device.
First installed by Siemens AG, the first CCTV systems was used for observing the launch of long range ballistic missiles developed by the end of World War II. Much later, the use of CCTV became common for use in banks and retail stores to discourage theft by recording potential evidence useful for criminal prosecution.
The increasing public use of CCTV worldwide does result in inflamed debate in many countries about security versus privacy, as more and more CCTV cameras are being installed by governments, shop owners, and private parties. Warning signs are typically posted in or around premises being monitored by cameras. Unfortunately, and maybe because of the abundant use of CCTV, there is little evidence that it deters crime. Rather, CCTV should be considered as one component in a comprehensive physical security program.
Unfortunately, CCTV is not only used for the good of the community. There is extensive and creative criminal use, I guess you can say, the burglar alarms are being used by the burglars. Illegal use of a hidden surveillance camera may capture your personal identification number (PIN) at the ATM, a camera could be placed to capture unsuspecting photos in a locker room, or movements tracked in planning a kidnap. The hideous use of the same technology that protects us can also cause harm.
Modern CCTV cameras are small, even miniature, and use high definition color. They are a far cry from the first CCTV cameras that were crude, conspicuous, and low-definition black and white. Video Content Analysis, referred to as, VCA is technology that enables cameras to focus and resolve minute details, tracking objects semi-automatically. This technology enables the system to recognize that an object is moving and whether or not it is a person or a vehicle; it can even determine the color of the object.
Technology advancements are relentless as devices become smaller and data can be transmitted faster for cheaper dollars. A human CCTV operator may be a thing of the past, or be responsible for observing many more cameras, as computerized monitoring of images is under development.
With the millions of gigabytes of captured video, the issue of retention, storage, and preservation becomes a more important issue and challenge. The quality of digital recordings are also subject to compression ratios, images stored per second, image size and duration of image retention before being overwritten. Beware that different vendors of digital video records use different compression standards and compression ratios.
It seems that this primer on CCTV is just the tip of what's needed to know about assembling a comprehensive security system, one which balances between your protection and respecting privacy.
About the Author
Kathryn Dawson writes articles for Traders Warehouse, a leading online store selling the cheapest CCTV systems, kits and other security products in the UK for the last 16 years. Explore a selection of the latest CCTV camera systems; mono, colour, day-and-night camera, as well as IR lamps and lenses. There is also a wide range of intruder and burglar alarms available; browse alarm kits, control panels and motion detectors. Get all your security system equipment at the store today.