Barco OverView cDG67-DL Manuel utilisateur

OverView D

Barco DLP projection series

Based upon years of experience and focused development, Barco Control Rooms has

developed the ultimate display wall for the control room environment. The OVERVIEW D

series of display walls is designed to emphasis not only performance, but long-term

reliability and ease of maintenance.

Barco has developed the OVERVIEW D series projection modules to provide key features to

enhance the operator’s comfort within a 24/7 environment. By including Barco’s

proprietary "Optical Dimming" and "Dynamic Feedback" technology, the OVERVIEW D series

projection module will allow constant optimization of brightness and contrast

performance while maintaining excellent color. By maintaining technological ownership of

the entire projection module, Barco Control Rooms was able to design the OVERVIEW D

Series with the most rugged components available.

Finally, the OVERVIEW D Series affords the customer piece of mind with a system that not

only provides you with the ultimate in performance, but also provides unsurpassed

reliability and ease of maintenance. Barco backs these ideas with long-term product

support and a wide range of specialized customer services.

Barco Control Rooms

instills

confidence

•Engineered for 24/7 mission critical operation

•Superior color rendition and uniformity

•Optimized viewing ergonomics

•Designed for low cost of ownership

•Simple system maintenance

What is DLP ?

Digital Light ProcessingTM technology

The Semiconductor

At the heart of every DLP™ projection

system is an optical semiconductor

known as the Digital Micromirror

Device, or DMD chip.

When a DMD chip is coordinated with a

digital video or graphic signal, a light

source, and a projection lens, its

mirrors can reflect an all-digital image

onto a screen. The DMD and the

electronics that surround it are referred

to as Digital Light Processing™

technology.

DLPTM technology is a revolutionary display solution that uses an optical

semiconductor to manipulate light digitally. The result is maximum fidelity, with a

picture whose clarity, brilliance and color must be seen to be believed.

White light passes through a color wheel filter, causing red, green and blue light to

be shone in sequence on the surface of the DMD. The switching of the mirrors, and

the proportion of time they are 'on' or 'off' is coordinated according to the color

shining on them. The human visual system integrates the sequential color and sees

a full-color image.

The grayscale image

A DMD panel's micromirrors are

mounted on tiny hinges that enable

them to tilt either toward the light

source in a DLP™ projection system

(ON) or away from it (OFF) — creating

a light or dark pixel on the projection

surface.

The bit-streamed image code entering

the semiconductor directs each mirror

to switch on and off up to several

thousand times per second. When a

mirror remains on average longer in

the on state than in the off state, it

introduces a light gray pixel. If the off

state dominates, a dark grey pixel is

projected.

In this way, the mirrors in a DLP™

projection system can reflect pixels in

up to 1,024 shades of gray to convert

the video or graphic signal entering

the DMD into a highly detailed

grayscale image.

3 pixel on screen

light absorber

light source

projection lens

3 DMD micromirrors

Adding color

The white light generated by the lamp

in a DLP™ projection system passes

through a color wheel as it travels to

the surface of the DMD panel. The

color wheel filters the light into red,

green, and blue, from which a single-

chip DLP™ projection system can

create at least 16.7 million colors.

DLP board

DMD

shaping optics

color filter

memory

processor

projection lens

condensing optics

screen

1st light source

2nd light source

dimmer

Color uniformity for each screen

Barcos solution is designed to meet EBU

standards

Color uniformity from

module to module

The feat res of the Barco DLP sol tion

Light output

Based on many years of experience

and several thousand display channels

worldwide, Barco Control Rooms knows

what looks best to the eye. Images

projected by DLP technology are

always crystal clear and the technology

comes close to reproducing the exact

mirror image of its source material.

The light output has been optimized

with respect to contrast, uniformity,

viewing angle, color and cost-of-

ownership. Each of the components of

the display solution, from lamp to

screen, including all optical

components, DLP chip, color wheel,

electronics, projection lens, mirrors and

structure have been carefully selected

or designed in order to meet the high

demands of 24/7 mission critical

operation.

Color

A large color triangle provides crisp

saturated colors. Designed to meet EBU

standards, the Barco Control Rooms

DLP solution allows seeing natural

video and realistic skin tones.

Color is of major importance, especially

for the broadcast environment,

situation rooms with video

conferencing, the medical and

surveillance market. For the control

rooms, this brings superb color contrast

for laying out all kinds of diagrams for

utilities control centers, traffic &

surveillance centers, command &

control centers and Network peration

Centers.

Color correction

The color correction algorithm takes

advantage of the internal resolution of

13 bits per color.

Color uniformity

DLP is a reflective technology. The

reflectance of all mirrors is equal and

color uniformity is not altered by the

chip. Utilization of high quality optical

components and projection lens

garantuee optimal color uniformity

within each module. A careful

selection of the color wheel filters

results in excellent module to module

color uniformity.

Contrast

At least as important as light output is

contrast. The contrast values of the

Barco Control Rooms DLP solution are

among the highest in the industry.

Moreover, the screen has been

selected to have minimum reflection

from ambient lighting, leaving the

viewer with a high contrast image.

dlp_brochure_new_br.qxd 08-01-2004 12:45 Pagina 7

High contrast images

High resolution Resolution

DLP technology is offered in XGA

(1024x768) and SXGA+(1400x1050).

High resolution increases the amount

of viewable data, which is important

for items like Asian characters, medical

data, GIS, or just to show large

applications with several video or RGB

sources.

Reliability

The digital nature of DLP™ technology

means that it's not susceptible to

environmental factors like heat,

humidity, or vibration, which can cause

an image to degrade over time.

The Barco Control Rooms solution

guarantees an original-quality picture

time and time again, with zero hassle

and minimal maintenance. All

components are carefully chosen to

provide high Mean Time Between

Failure and minimal Mean Time To

Repair.

Design

The Digital Micromirror Device at the

core of DLP™ technology can modulate

light very quickly, meaning that only

one panel is required.

Barco Control Rooms has integrated

this chip into a projection subsystem

with an innovative approach and

optimized for 24/7 operation.

The projection engine is split into a

projection unit, which is smaller and

lighter than the illumination unit. This

unique feature has many advantages

and also allows easy integration of

future technology improvements

without having to replace the full

engine.

Future proof

New firmware can be uploaded by

remote interface.

Color temperature & Degamma

The color temperature of the white

point is selected to be

6500 K, which is the same as the color

temperature of the sun, providing

natural images. For video and the

broadcasting environment this is a

must. Gamma correction is possible by

setting user definable gamma values.

Fan module

Screen module

Module

•Modular design

•Image optimization

•Built in redundancy

•Low Mean Time To Repair concept

•High Mean Time Between Failure concept

•Image equalizing capability

•On-screen menus

Image optimization

From lamp to screen, the whole light

path is designed by Barco Control

Rooms to deliver optimal picture

quality.

In addition to high quality components

in each step of the light path, an

automated, patent pending alignment

system insures optimal light coupling

between the lamp and the DLP chip.

The system allows compensation for

tolerancing of the lamp burner inside

the lamp housing. This results in

superior brightness and uniformity.

Projection unit

Filter

IIIumination unit

Barco’s added value

Modular design

Barco offers a range of display

solutions in the OVERVIEW series that are

designed to form display walls of any

size, in a linear or curved setup. The

closed modular structure requires

minimal installation depth.

All components are engineered to

deliver a highly reliable and superior

quality image display to the operator.

The displays can be seamlessly

integrated into any center already in

use.

The modular concept has also been

applied within each module. Thanks to

the separate fan-module, projection

unit and illumination unit, maintenance

from the rear of the system is very

easy. Filter and lamps can be replaced

from the outside.

Barco’s added value

Built in redundancy

The conception of the projection

engine in terms of redundancy deals

with its weakest link - the lamp, which

is the main consumable. The lamps are

combined with the lamp electronics in

the illumination unit, which is

physically separated from the

projection unit.

In some mission critical applications,

the loss of light, even for a short time

interval is not acceptable. Therefore,

the dual lamp mechanism with two

lamps can be run in the following

modes: Hot stand-by, Cold stand-by or

Auto switch mode.

The redundant lamp feature also

decreases the amount of service

interventions for lamp replacement.

Lamp replacement can be planned in

instead of being a randomized

operation. Therefore the redundant

lamp concept increases operational

efficiency. Finally, operators don’t get

distracted from their task and can

concentrate on display wall content.

Hot stand-by:

The two lamps are on. The second

lamp brings redundancy to the system

and guarantees an image at all times.

Dual lamp system will provide 100% on the

availability of your display wall

iIIumination unit

projection

unit

DLP

chip lamp 1

lamp 2

hot stand-by

color wheel

1st lamp on-state

1st lamp off-state

2nd lamp on-state

2nd lamp off-state

1st lamp ignite

2nd lamp ignite

lamp fail

lamp switch

to projection unit

repair

to projection unit

iIIumination unit

projection

unit

DLP

chip lamp 1

lamp 2

hot stand-by

color wheel

iIIumination unit

projection

unit

DLP

chip

lamp 1

to be replaced

lamp 2

color wheel

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