Digital Signage – Understanding Screens

Flat screen technology has only been around a few years but already it has not only replaced its forerunner the CRT TV in our homes but also these thinner TV systems has paved the way for a revolution in out of home advertising.

But the demands on digital signage differ to those placed on home entertainment screens and while technologies like HD (High Definition) make quite a difference when you’re watching the latest Hollywood blockbuster, it will have little impact on an advertising campaign run on a HD digital signage screen.

However, there is a difference in the differing technologies used in modern flat screen TVs with advantages and disadvantages to them both. Generally when it comes to modern flat screen TVs they come in two varieties – the LCD (Liquid Crystal display) or plasma.

There was a time when there were quite sharp differences in the two technologies. Plasmas used to be brighter and have a better quality image, while LCD TVs used less power and were less susceptible to screen burn.

However, technology has advanced quite sharply and now the differences in the two technologies are negligible and more consideration should be given to protecting the screens to ensure the quality of image doesn’t diminish due to other factors.

Unlike home entertainment use, screens used in digital signage are often left exposed to direct sunlight or kept continually on. Heat build up and the direct glare of the sun can damage both LCD and plasma screens.

Some digital signage enclosures use clever technologies to ensure the screens of modern plasmas and LCD’s are protected. Air curtains are often used in some LCD enclosures, these blow a curtain of cool air across the screen preventing sun glare from causing hotspots. Anti-glare glass is also used extensively in LCD and plasma enclosures to ensure the screen is as readable as possible under direct glare.

When running a digital signage campaign, protecting the screen is crucial as the only outlay other than running costs is caused by replacing the screens. However, both running costs and protection may have become decidingly easier thanks to the development of LCD screens with LED backlights.

These use an array of light emitting diodes (LED) to generate the backlight of the TV. This not only uses a lot less power than conventional LCD technology but also they do not get as hot ensuring the screen costs less to run and will last longer.

About the Author

Richard N Williams is a technical author and a specialist in the digital signage industry helping to develop outdoor digital signage and protection for plasmas. Please visit us for more information about LCD Enclosures or other digital signage solutions.

Star Trek: Voyager (DVD) Review

Nominated for 30 Emmys, including seven for Outstanding Special Visual Effects for a Series, Star Trek: Voyager continues the rich tradition of the original 1960s Star Trek franchise. Created by former L.A. police officer Gene Roddenberry, the Star Trek TV series morphed into a franchise famous for the unprecedented fanatical devotion of its fan base. Lasting only three seasons during its original network run, Star Trek struck gold with its syndicated reruns, launching a number of motion pictures featuring the original cast as well as novels, comic books, collectibles, and reams of Star Trek-related memorabilia. The third spin-off from the original Star Trek series, Star Trek: Voyager premiered in January 1995 to modest critical acclaim, but experienced great success with television viewers, slowly increasing its ratings as the series progressed. Following on the heels of Star Trek: The Next Generation (1987) and Star Trek: Deep Space Nine (1993), the series precedes Star Trek: Enterprise (2001) while boasting an all-star cast that includes veteran actress Kate Mulgrew (whose past TV appearances include such shows as Dallas, Cheers, and Murphy Brown). Yet instead of pursuing the classic Star Trek mission to “boldly go where no one has gone before,” Star Trek: Voyager is more about going where the crew has been before…

Star Trek: Voyager follows the exploits of the crew aboard the starship USS Voyager. As the series begins, the Voyager is on a Federation mission to capture a rogue ship of Maquis rebels (a race first introduced in Star Trek: Deep Space Nine). While in pursuit of the Maquis, the Voyager enters a system known as the badlands, and both ships are instantaneously transported to the Delta Quadrant over seventy-thousand light years away on the outskirts of the galaxy. Soon, both the Maquis and the crew of Voyager learn they were brought to Delta Quadrant by the Caretaker, a mysterious force overseeing the safety of the Ocampan race who live in the shadow on an impending threat from the vicious Kazon. When the Kazon destroy the Maquis ship, the Voyager crew merges with the Maquis crew to defend themselves from the Kazon. Having destroyed the device which could bring them home, the crew of the Voyager – led by Capt. Kathryn Janeway (Kate Mulgrew), and the crew of the Maquis ship – led by Commander Chakotay (Robert Beltran), must work as a united front in order to meet their mutual goal of finding a way home…

The Star Trek: Voyager DVD features a number of exciting episodes including the series premiere “Caretaker” in which the Federation starship USS Voyager, led by Capt. Kathryn Janeway, is unexpectedly transported 70,000 light years away while pursuing a band of Maquis rebels through an area known as the badlands. The Voyager’s new destination is the Delta Quadrant, an uncharted region of the galaxy overseen by the Caretaker and threatened by the colonial aggression of the Kazon… Other notable episodes from Season 1 include “The Cloud” in which the Voyager accidentally injures an alien life form while searching for an ingredient to boost its energy supply, and “Learning Curve” in which members of Commander Chakotay’s ragtag Maquis crew are given a Starfleet Academy tutorial on how to act properly aboard the Voyager…

Below is a list of episodes included on the Star Trek: Voyager (Season 1) DVD:

Episode 1 (Caretaker: Part 1) Air Date: 01-15-1995

Episode 2 (Caretaker: Part 2) Air Date: 01-15-1995

Episode 3 (Parallax) Air Date: 01-23-1995

Episode 4 (Time and Again) Air Date: 01-30-1995

Episode 5 (Phage) Air Date: 02-03-1995

Episode 6 (The Cloud) Air Date: 02-10-1995

Episode 7 (Eye of the Needle) Air Date: 02-17-1995

Episode 8 (Ex Post Facto) Air Date: 02-24-1995

Episode 9 (Emanations) Air Date: 03-13-1995

Episode 10 (Prime Factors) Air Date: 03-20-1995

Episode 11 (State of Flux) Air Date: 04-10-1995

Episode 12 (Heroes and Demons) Air Date: 04-24-1995

Episode 13 (Cathexis) Air Date: 05-01-1995

Episode 14 (Faces) Air Date: 05-08-1995

Episode 15 (Jetrel) Air Date: 05-15-1995

Episode 16 (Learning Curve) Air Date: 05-22-1995

About the Author

Britt Gillette is author of The DVD Report, a blog where you can find more reviews like this one of the Star Trek: Voyager (DVD).

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