-Project Final Workshop Munich - 26 November 2003 Martin Dreher Bayerische Medien Technik GmbH martin.dreher@bmt-online.de 1
Agenda 1. About us 2. transmission chain 3. with GEWI-System 4. -Infrastructure by BMT 5. DAB-Transmission 6. martin.dreher@bmt-online.de 2
Who is BMT? 50 % 50 % martin.dreher@bmt-online.de 3
BMT's activities... wir bringen Sie zum Digitalen Rundfunk! Development and service for: Digital Radio/Data-Services Traffic telematics MHP Applications DVB-T / DVB-S M-Commerce/mobilephone shopping Studio- und Broadcast technology martin.dreher@bmt-online.de 4
System overview I DAB transmission DAB receiver Multiplexer 0101011001 0010101011 1011010101 binary Encoder Decoder 0101011001 0010101011 1011010101 binary tpegml GEWI TIC tpegml - MMI martin.dreher@bmt-online.de 5
BMT's activities martin.dreher@bmt-online.de 6
BMT's activities martin.dreher@bmt-online.de 7
System overview II - System Serviceprovider A ml-rtm binary converter Servicemultiplexer Serviceprovider B Service 1 -ml-rtm Service 2 - ml-pti binary converter binary converter PTI / RTM Servicemultiplexer Multiplexer Serviceprovider C binary binary... DAB Internet... martin.dreher@bmt-online.de 8
Formats and Parameters tpegml as data import format binary for data broadcast Various parameters for -Multiplexing -service component frame -service multiplex -transport multiplex Transmission over DAB (TDC) / Internet /... Adaption layer delivers cycle in device binary to tpegml decoder End user application based on tpegml Plugin-interface for applications martin.dreher@bmt-online.de 9
Transmission Stream generator plugins for various bearers Transmission over DIGITAL RADIO (DAB) Transparent data channel - TDC stream mode / packet mode / X-PAD Multi Media Data Server (MMDS) DAB-Multiplexer DAB-Transmitter Test service is right now Transmisssion over Internet Will be available shortly martin.dreher@bmt-online.de 10
Live Test Broadcast Area: Bavaria DAB Channel 12 D packet mode service -RTM and SNI Startdate: 15.11.2003 Stopdate: 15.12.2003 Partners: : GEWI -Stream : BMT DAB transmission capacity: BDR Feedback welcome! martin.dreher@bmt-online.de 11
Results of the -Project are a solid base BMT offers transmission infrastructure evaluation site shortly available at www.digitaltraffic.de Further interface specifications/guidelines could ensure compatibility of -products need for independent -test and evaluation suite to ensure -quality BMT will continue -work in the -Forum Implementation Task Force (ITF) martin.dreher@bmt-online.de 12
For further information... www.bmt-online.de Martin Dreher Projektleiter Verkehrstelematik Bayerische Medien Technik GmbH Pfälzer-Wald-Str. 32 D-81539 München Tel.: 0049 89 / 451 15-132 Fax: - 199 Email: martin.dreher@bmt-online.de Thank you! martin.dreher@bmt-online.de 13
<tpegml/> tpegml as data exchange format: specified (DTD) can be mapped to -binary format verification of data-structure is possible xml is an industry standard technology many tools available well-known by IT-staff martin.dreher@bmt-online.de 14
<tpegml/> to binary conversion conversion is done on application level xml input is validated with the dtds rtmml application is implemented further applications will follow open interfaces should be specified - guidelines bandwidth related parameter: number of used levels of encoding martin.dreher@bmt-online.de 15
binary 0010100111011010... or why we don't broadcast tpegml: bandwidth has its price -> efficient binary format bearer-independent service and network information including linking synchronization and error recognition modular structure of stream martin.dreher@bmt-online.de 16
multiplex parameters -service component frame application components per frame framesize of service components -service multiplex framesize of service frame (transport frame) number of applications frequency of service components -transport multiplex frequency of stream directory bandwidth-dependent multiplex for service providers martin.dreher@bmt-online.de 17