Rugged thin-client display offers readability in any lighting conditions

July 29, 2013 // By Graham Prophet
Human-systems interface (HSI) specialist IEE, Inc. has introduced a rugged, ARM-based 10.4-in TFT XGA thin-client display that can be custom-tailored for harsh military environments.

With a 10.4-in. XGA (1024 x 768) AMLCD, the rugged display features IEE’s dual mode backlight system supporting variable reading modes from a high bright mode of 600 cd/m 2 to NVIS lighting for dark environments. The display’s contrast ratio is optimised through the use of specialised surface treatments and optically clear bonding throughout the display stack-up. These readability parameters make the new display suitable for a range of military applications including soldier mount, vehicle mount and man-pack handheld use. The backlit-enhanced display comes with a high-resolution five-wire resistive touchscreen, optically bonded to the LCD, or with a 16 pushbutton bezel – eight on each side – for flexible function control. Both operator interfaces can be integrated into one unit, depending on the intended use of the display.

The ARM processor features both an I cache and D cache of 32 kB each, enabling simultaneous instruction and data fetching to improve the display’s performance. A 128 kB L2 cache is also included. The processor’s 512 MB internal memory of 16-bit wide DDR3-800 SDRAM speeds up data transfers and its 512 MB of 8-bit wide SLC NAND Flash increases write speeds. The new display processor runs embedded Linux and supports many common software protocols, such as HTML 5.0 and Java VM; the integral Ethernet interface supports the VICTORY architecture implementation. Up to six USB ports can be included to connect peripheral devices, such as a keyboard, a mouse or a memory stick, to the unit. The display optionally supports a host of standard video inputs, including composite RS-170/-343, analogue VGA and digital DVI.

As an extension of IEE’s MIL-STD qualified, web browser-based control display units (CDUs), the new display functions reliably both in harsh and in-the-field conditions. It is fully sealed for submersible applications, incorporates sealed circular I/O connectors and operates in temperatures from -46°C to +70°C. The lightweight aluminum housing, measuring 7.8 x 11.6 x 3.0 in., combines with an