Medialab Prado

Image: Led Action Screen. María Langarita & Víctor Navarro.

General information:

- The images to be shown on the digital facade can be on any format, and may be presented with any software, since the connection between the screen and the PC is via a regular DVI cable, like the ones computer monitors/projectors use. It cannot be used however to display analog sources.

- Even though the screen is quite large (15m x10m), the actual resolution is low (192x157pixels) due to it's actual pixel count which is about 27.000pixels. This means that higher resolution images, still or in motion are not appropriate for this screen.

- The digital facade does not have sound.

(For more information about the orientation of the projects, visit Media(nera)Lab: Platform for the experimentation and production of projects for the digital façade in Medialab-Prado's building).

Technical information:

> Download complete information in pdf in English (11Mb)

The MEDIALAB-PRADO's LED screen uses the  Philips Color Kinetics iCOLOR FLEX SLX system.
It is formed by a series of rectangular panels that are fixed to the facade of the building that faces North. There are a total of 94 panels, arranged in the following way:

A top edge consiting of 14 type B panels, measuring 0.9m x 1.2m (3'x4')
Each type B panel has 4 stripes of 48 nodes each (16 x 12 pixels).

An inferior rectangle consisting of 80 type A panels, measuring 0.9m x 1.87m (3'x6').
Each type A panel has 6 stripes of 50 nodes each (25 x 12 pixels).

Digital facade's size, inferior rectangle:
Width: 14.5 m (48')
Height: 9.4 m (30')

Digital facade's resolution:
Horizontal resolution: 192 lines
Minimum vertical resolution: 125 lines
Maximum vertical resolution: 157 lines
Resolution: 192 x 157

Nodes/Pixels:
Number of nodes (inferior rectangle): 24.000
Number of total nodes: 26.680
Each node is composed of 7 LED's; 2 red, 3 green, and 2 blue.
The iCOLOR FLEX SLX system can display up to 64.000 million (36bit) of RGB additive colors, of constantly variable intensity.

Brightness:
Callibrated brightness: 114 Cd/m2

Type of video inputs:
DVI 1024x768@60Hz

Position and size of content:
Animation size: 192 x 157
Position: Left top corner @ DVI pixel 40,40

Physical dimentions of the square (Plaza de Las Letras):
Length: 30 m (100')
Width: 15 m (50')

Viewing distance:
Pixel pitch: 75 mm
Minimal: 7 m (23')
Optimum: 30 m (90')
Maximum: 250 m (750')
Viewing angle: 115º

For more information, download complete pdf in English