Objetivo The key goals of MAVT are powerful video and audio coding schemes to transmit multimedia services in a mobile environment and implement them on a demonstrator. User requirements, network and channel-characteristics, service definitions and a general terminal architecture will be studied. MAVT will deliver future coding algorithms for low bitrate video (px8 kbit/s) and audio, and a futuristic terminal. Real time transmission of moving video in a DECT environment will be demonstrated as well as audio-visual data transmission in a UMTS environment by connecting the demonstrator to the testbeds of ATDMA and CODIT. Another main goal of the MAVT project is to develop a joint European proposal for the MPEG-4 coding standard. MAVT will contribute to ETSI SMG 5 group by providing a reference model for mobile audio-visual data transmission.The research objective was to find powerful video an audio coding algorithms for the transmission of moving and still video in a mobile environment (like the universal telecommunications system (UMTS)) and implement them on a demonstrator. This necessitated a study of user requirements, network and channel characteristics, service definitions and a general terminal architecture. The research aimed to provide future algorithms for low bit rate video (px 8 thousand bits per second) and audio coding and a futuristic terminal with several novel features, including a variable resolution display and good quality audio. New proposals for very large scale integration (VLSI) chips for video and audio coding were expected from the realization of the demonstrator.The research has identified possible video and audio services for a mobile terminal and has defined the input video formats for those services. A reference model of low bit rate video coding was created and a first algorithm for px 8 thousand bits per second video coding was produced.New algorithms were developed that optimise low bit rate video and audio coding in terms of bit rate, complexity and transmission delay. Some are based on current standards and are suitable for the short term development of a demonstrator. Other algorithms implemented with later versions using advanced coding techniques will contribute to the definition of future standards. Rate compatible punctured convolutional (RCPC) codes and combined source channel coding have been introduced into the video coding task.Technical Approach After DECT demonstrator integration and real-time field trials with mobile audio-visual transmission, UMTS test beds will be connected for transmission of moving video. Most important is the long term reference model as European input to ISO MPEG-4 in close liaison with COST 211ter. Key Issues - Service definition and user requirements.- Investigation of network and channel characteristics.- Long and short term very low bitrate coding algorithms.- Channel error protection and System control.- Generic reference model for ISO MPEG 4.- Multimedia Transmission in DECT, GSM and UMTS.- Real-time demonstrator. Expected Impact Results will contribute to standardisation within ISO, ITU and ETSI. Improvement of existing and development of completely new coding schemes will permit introduction of new applications into existing DECT and GSM networks, supported by the results of the DECT demonstrator field trials. Connecting the MAVT demonstrator to the UMTS test beds will give first ideas about the resulting quality of multimedia applications in third generation mobile networks. MAVT will provide a standard for communications and industrial applications as only then will it be feasible to design a multi-purpose terminal integrating communications with multimedia and computing facilities. Ámbito científico engineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunicationstelecommunications networksmobile network Programa(s) FP3-RACE 2 - Specific research and technological development programme (EEC) in the field of communication technologies, 1990-1994 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador Robert Bosch GmbH Aportación de la UE Sin datos Dirección Robert-Bosch-Straße 200 31132 Hildesheim Alemania Ver en el mapa Coste total Sin datos Participantes (17) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo ANT NACHRICHTENTECHNIK GMBH Alemania Aportación de la UE Sin datos Dirección GERBERSTRAßE 33 71522 BACKNANG Ver en el mapa Coste total Sin datos CENTER MORPHOLOGICAL MATH. Francia Aportación de la UE Sin datos Dirección 60 BOULEVARD ST MICHEL 75272 PARIS Ver en el mapa Coste total Sin datos Centre National d'Études des Télécommunications (CNET) Francia Aportación de la UE Sin datos Dirección 38-40 rue du General Leclerc 92131 Issy-Les-Moulineaux Ver en el mapa Coste total Sin datos Centro Studi e Laboratori Telecomunicazioni SpA (CSELT) Italia Aportación de la UE Sin datos Dirección Via Guglielmo Reiss Romoli 274 10148 Torino Ver en el mapa Coste total Sin datos DAIMLER-BENZ AG Alemania Aportación de la UE Sin datos Dirección 89013 ULM Ver en el mapa Coste total Sin datos ECOLE POLYTECHNIQUE FEDERALE LAUSANNE Suiza Aportación de la UE Sin datos Dirección 1015 LAUSANNE Ver en el mapa Coste total Sin datos ITIS Francia Aportación de la UE Sin datos Dirección Centre Espace Performance 35769 Saint-Grégoire Ver en el mapa Coste total Sin datos Instituto Superior Técnico (IST) Portugal Aportación de la UE Sin datos Dirección Avenida Rovisco Pais 1 1096 Lisboa Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos Laboratoire d'Électronique Philips Francia Aportación de la UE Sin datos Dirección 22 avenue Descartes 94453 Limeil-Brevannes Ver en el mapa Coste total Sin datos Matra Communication Francia Aportación de la UE Sin datos Dirección Rue Jean-Pierre Timbaud 78392 Bois d'Arcy Ver en el mapa Coste total Sin datos PTT RESEARCH Países Bajos Aportación de la UE Sin datos Dirección ST. PAULUSSTRAAT 4 2260 AK LEIDSCHENDAM Ver en el mapa Coste total Sin datos Queen Mary and Westfield College Reino Unido Aportación de la UE Sin datos Dirección Mile End Road E1 4NS London Ver en el mapa Coste total Sin datos Siemens AG Alemania Aportación de la UE Sin datos Dirección Otto-Hahn-Ring 6 81739 München Ver en el mapa Coste total Sin datos TELEFONICA DE ESPAÑA España Aportación de la UE Sin datos Dirección EMILIO VARGAS, 6 28043 MADRID Ver en el mapa Coste total Sin datos Thomson CSF Francia Aportación de la UE Sin datos Dirección 3 avenue de Belle Fontaine 35510 Cesson-Sévigne Ver en el mapa Coste total Sin datos UNIVERSITAT POLITECNICA CATALUNYA España Aportación de la UE Sin datos Dirección 8080 BARCELONA Ver en el mapa Coste total Sin datos Universität Hannover Alemania Aportación de la UE Sin datos Dirección Appelstraße 9A 30167 Hannover Ver en el mapa Coste total Sin datos