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*      RADIO-L :  a discussion of Digital Audio Broadcasting (DAB)    *
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Date: 14 October 1998
From: kor@iis.fhg.de
Subject: Re:  DAB recordings

Dear RADIO-L members!

Here is our answer to the discussion, started with the posting of
Kjell-Ake Bernerson:

> Last week I visited a DAB-tour organized by the Swedish Broadcasting
> Corp. A thought came up: how do I record the sound from a
> DAB-receiver together with the data information (pictures & text)?
> Is there any interface available for a DAT-recorder or a video
> recorder?

As far as I know there is no interface available for DAT-recorder or
video recorder.

We at Fraunhofer have developed a PCMCIA-Card with RDI-Interface for
use in Windows95 environments.

The card is supported with device driver and API-library for
programmers (selection of FIC and Subchannels, packed decoder, PAD
decoder, ...).  We have developed some applications based on this
software toolbox:

1) Compact Data Radio (CDR):

It enables a Windows95 laptop in combination with a BOSCH d-fire-box
DAB receiver to decode DAB audio and data. Data presentation is
realized via an Active X control of the Microsoft Internet Explorer.

2) RDI Recorder:

This software records RDI data on the harddisk of the laptop. The
recorded data can be transmitted again later on via the RDI-Interface
of the laptop to other RDI-receivers/decoders.

3) Subchannel-Decoder:

We plan to implement an application that records a selected subchannel
to harddisk. The recorded data could then be used by third-party
applications (e.g. adapted version of CDR-software) for presenting the
contents of the subchannel.  In the case of recording a audio
subchannel, this would help for the request mentioned at the beginning,
as the recorded data would contain the mpeg layer2 audio data _and_
the associated data (PAD).

If you have any further questions to our work on DAB, please contact
me.  <<MODERATOR'S NOTE:  Please pose general questions to RADIO-L>>

Best regards,
Olaf Korte
====================================================
Fraunhofer Institute for Integrated Circuits
Dipl. Inf. Olaf Korte Working Group, Wireless Telecommunication and
Multimedia Technology
Dept. Terminal Devices Am Weichselgarten 3, D-91058 Erlangen

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