terminated Circuit Tv Technology

Simply speaking, Closed-circuit television (Cctv) is the use of video cameras to forward a signal to a specific, miniature set of monitors. It differs from broadcast television in that the signal is not openly transmitted over the social air waves. Usually a terminated circuit television (Cctv) principles uses a stand-mounted or hand-held video camera to scheme a magnified image onto a video monitor or a television (Tv) screen. Cctv systems may operate continuously or only as required to monitor a singular event.

The technology of terminated circuit television (Cctv) originated in the 1950s and consisted of two low-resolution black and white cameras. Its main objective was to replace humans for visual protection surveillance. In the 1980s, solid state cameras and Vcrs were introduced. The resolution was better, but the pictures were still in black and white. In the 1990s, came the transformation to color, and ultimately digital video recorders (Dvrs) were introduced. Today there are still applications where black & white cameras are used, because they achieve much best in low light and Ir illuminated applications than the color cameras. And cameras are getting smaller and smaller. miniature protection cameras can today be installed virtually everywhere (such cameras can even consist of infra-red illumination which enables us to see in the dark).

Traditional video transmission in Cctv is done using 75 ohm coaxial cables. The video signal transmitted is a normal composite video signal, although some systems use Radio Frequency signals. The camera is Usually powered by low voltage (typically 12V or 24V) through a local power supply near the camera or a cut off power cable fed together with the coaxial cable. There are also some systems which feed the power to the camera through the same coaxial cable where to photograph is transported.

Some of the more popular applications for Cctv surveillance are:

Retail

- monitoring for shoplifters and dishonest employees

- compiling recorded evidence against bogus emergency claims

- monitoring merchandising displays in shop hundreds of miles away

Manufacturers, Banks, Casinos, Hospitals and Universities

- identifying visitors and employees

- thwarting theft

- ensuring the protection of the premises and parking facilities

Airports and military Installations

- watching for potential high-jackers, and terrorists

Industrial Plants

- observing procedures that are remote from a operate room

- monitoring dangerous work areas

Sports Venues

- providing fans in the "cheaper" seats a best view of the action.

Home protection

- watching for unwanted visitors with video intercom doorbells

- observing child/elder caretakers with nanny cams

In summary, advances in Cctv technology are turning video surveillance into one of the most vital loss prevention, safety/security and supervision tools ready today.

terminated Circuit Tv Technology

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New Edgeline Printer Technology Could Revolutionize Office Printing

When purchasing printers or multifunction copiers for an office, trade-offs are typically made. Is the speed accepted for a workgroup or a department? Is color or monochrome yield sufficient? If color, would ink technology or the faster laser technology be better?

Typically, if color yield is needed, the user must resolve in the middle of the photo ability of an ink technology or the slightly more grainy yield of a color laser. Of course, the color laser can print much faster than the ink technology so that is also a factor. If a large volume of yield is necessary, the user must choose a color laser because ink printing is just too slow and ink machines are not built to cope volumes of paper. In many cases however, laser printing is more precious to print (per page) than ink technology.

Edgeline technology from Hewlett Packard promises to deliver the best of both ink and laser technologies. It will bring low engine cost, low operating costs, fast print speeds and photo ability output.

What is Edgeline?

Edgeline is the succeed of 4 years and 1.4 billion dollars of investigate and development by Hewlett Packard. What they created was a patented process to economically organize an inkjet printhead that spans the entire width of a printed page. This means that during printing, only the paper moves not the printhead. Combined with new ink formulations, the speed of the printer can be increased to 71 pages per petite with superior image quality. The printheads are very reliable, designed to last for 2 million printed pages or the beneficial life of the engine itself.

Three Key Elements

The three main features of this principles are a printhead that spans the entire printed page, arresting the paper under the fixed printhead, and an ink principles that can adapt to dissimilar requirements. The new ink contains colorants that immobilize rapidly on the paper to ensure consistent dot size, high color saturation, and high optical density. Prints dry rapidly at 70+ pages-per-minute, resist smear (even from a highlighter) and are water resistant.

Will the ability be good?

Edgeline technology also includes arresting and self-calibrating writing systems to deliver consistent image quality. The printheads are designed to print at 1200dpi. This equals the best native resolutions of current products. The printheads also know when a exact nozzle is acting up and it's duties can be passed to an adjacent nozzle. There will also be a 2-pass option for added increasing print quality.

Will it be more expensive?

Pricing has not been released as of the date of this writing, but the base technology is already in use and Hp is promising best-in-class operating costs as well as reliability, ability and speed. The engine itself should not cost more than current color laser Mfps due to the much simpler mechanics. There will be no high voltage power supply, laser scanner mechanisms, replacement belts, or fuser assemblies. And those are just the major components. In fact, the engine will only need to move paper passed the printheads. This is much simpler than any current design.

When will it arrive?

Multifunction devices utilizing this technology are incredible to be shipping during the second quarter of 2007. Because of all its advantages, it is very likely that you will see this technology in an office near you before the end of this year.

New Edgeline Printer Technology Could Revolutionize Office Printing

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