Fraunhofer-Gesellschaft R4 User Manual download pdf (Page 2)

The Fraunhofer DRM ContentServer

is a highly reliable professional broad-

cast system for Digital Radio Mondiale

(“DRM“, see www.drm.org). It provides

all options DRM offers and all interfaces

for a smooth integration into the

broadcast chain.

The Fraunhofer DRM ContentServer

provides triple functionality:

– DRM AudioServer with multi-

stream real-time audio encoding

– DRM Multimedia DataServer

supporting all standarized as well as

broadcaster specific data

services, covering import, process-

ing, encoding and broadcast

– DRM Multiplex Generator

managing the extensive DRM signal-

ling capabilities, generating the full

digital DRM Multiplex and providing

standard MDI/DCP output streams

The One-box

DRM Broadcast Solution

The system is typically located in the stu-

dio, at a playout center or at the trans-

mitter site – with full remote control for

administration and data provision.

The remote web interface featuring

Fraunhofer´s in-place-editing techno-

logy for quick and convenient system

configuration can be accessed through

any modern web browser.

The output signal of the Fraunhofer

DRM ContentServer

R4 carries the

complete DRM Multiplex (FAC, SDC,

MSC) in MDI/DCP format according to

ETSI TS 102 820 (Multiplex Distribution

Interface) and ETSI TS 102 821 (Distri-

bution and Communications Protocol).

This DRM Multiplex can be fed simulta-

neously to any number of DRM Modu-

lators (optional SFN operation) and

monitoring stations.

Fraunhofer DRM AudioServer

This system component provides real-

time encoding of up to four audio

streams in parallel:

– Live analog, digital, Livewire or

MP3 playlist input

– AAC (mono/stereo/parametric stereo),

HVXC and CELP encoding with SBR

– All possible bitrates including UEP

(unequal error protection)

– All available sampling rates

(8 / 12 / 16 / 24/ 48 kHz)

– MPEG Surround option

Fraunhofer Multimedia DataServer

This component supports the import /

collecting, merging, checking, conver-

sion and encoding of data for all stand-

ardized DRM / DAB as well as individual

data applications.

DRM / DAB data applications:

– DRM TextMessages

– Journaline

– MOT Slideshow

– MOT Broadcast Website

– TPEG Traffic Information

– PRBS – internally generated synchro-

nous or asynchronous test patterns

– EPG – Electronic Programme Guide

– TMC – Traffic Message Channel

Open interfaces allow the transmission

of any custom-tailored individual

application at various protocol levels:

– Transparent File Transmission via MOT

– IP Insertion –

(Internet Protocol tunneling)

– TDC – Transparent Data Channel

– DRM Data Units

– MSC Data Groups

– Synchronous / asynchronous

data streams

Fraunhofer DRM ContentServer

Versatile data import interfaces and

automation features allow for a smooth

integration into production environ-

ments:

– RSS import (automatically scheduled

or manually triggered)

– Ftp, ftp-mirroring and http-mirroring

– Web-interface for quick data editing

using a standard web browser

– UECP, Funkhaustelegramm,

Leitungsprotokoll and

ZENON studio interfaces

– Socket interface for real-time data

insertion

– Protected connections for secure

and reliable data import restricted

to the predefined data sources:

ftps, ftps-mirroring, https-mirroring

The protocol standard MOT 2.1.1 (Mul-

timedia Object Transfer) for enhanced

file and directory structure transmissions

is supported.

Fraunhofer DRM Multiplex Generator

All DRM signalling features are supported

according to ETSI ES 201 980 (v.3.1.1)

including the DRM dynamic reconfigu-

ration feature.

Transmission channel options:

– Robustness modes A, B, C, D

– Spectrum occupancy

4.5, 5, 9, 10, 18, 20 kHz

– MSC modes 16 QAM, 64 QAM

and hierarchical (HMmix, HMsym)

– SDC modes 4 QAM and 16 QAM

– Interleaver length 0.4s and 2s

– EEP (equal error protection) and

UEP (unequal error protection)

with all possible combinations of

protection ratios / code rates

– DRM+ option: robustness mode E,

100 kHz, MSC modes 4/16 QAM,

SDC modes 4 QAM code rate

0.5/0.25, interleaver length 0.6s

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Fraunhofer-Gesellschaft R4 User Manual Page 2

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