Digital Signage: Sign Me Up

When first looked at through uninitiated eyes, digital signage installations look like nothing more than large, flat-screen televisions displaying advertising. But on closer inspection, the specifications of commercial-grade screens show they aren't the same as those found in your local retail electronics store. The first and most notable difference is their ability to be positioned in portrait as well as landscape orientation.

Whether hung on a wall or attached to a stand, commercial displays come in many sizes and are designed specifically for the purpose of displaying advertising or information in a public setting. The feature set included in the firmware of digital signage screens will usually have added functionality, such as timers and networking ability. Most will also have a variety of additional input connections aside from those found in home versions. Some models, such as ViewSonic's OP4710, have an open frame design, which allows them to be installed into custom housings. These displays are usually placed in kiosks.

Although each situation is different, and requirements will vary accordingly, digital signage equipment is generally expected to withstand much more usage and abuse than its consumer-grade counterpart. Depending on the setting and application, digital signage displays must be able endure demands that many customers don't take into consideration when choosing a solution. Screen size is also a factor to be considered, as the information that is displayed must be viewable from a distance. Viewing angle specifications are not as much of a concern since most current displays now have viewing angles of 178 to 180 degrees.

One of the largest digital signage displays we've ever had the chance to see is NEC Display Solutions' MultiSync LCD8205. This 82-inch monitor includes many of the key features necessary for commercial applications, including technology designed for 24x7 usage, full high-definition (HD) 1,080p resolution (1,920 x 1,080), an optional protective panel, which protects the display from damage, and thermal protection and internal heat sensors for increased longevity. Multiple types of mounting hardware are also available to position this giant just about anywhere.

When used in a transit location such as an airport or train station, the monitors will likely be on and in use around the clock. A normal consumer screen is designed to be used for less than eight hours per day. If the same components were used in a commercial setting, the display's life span would be diminished to approximately one-third. For the same reason, consumer model warranties do not cover such installations. On the other hand, components designed for commercial use will typically be built using heavy-duty parts and have warranties to support the added demands that most likely will be placed on them.

Other location considerations include eating establishments and outdoor applications where the screen needs to be able to tolerate the additional stress of environmental concerns of grease, extreme temperature and weather factors. Manufacturers counter these issues with enclosures that are sealed to keep out oil, dust and the elements, while incorporating cooling systems to keep the internal parts from overheating. Displays with a high-brightness screen usually perform better outside, helping to prevent glare, as well as increasing the viewing angle. These models generally use glass that can withstand the extra factors of ultraviolet light, while also contributing to around-the-clock operation.