Multimedia communications for users

Rosenberg, Jonathan; Kraut, Robert E.; Gómez, Luis Alberto Zarrabeitía; Buzzard, C. A.

doi:10.1109/35.137476

Cited by 48 publications

(4 citation statements)

References 6 publications

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“…Technical innovation enables the shifting from centralized configurations to distributed or decentralized configurations of systems architectures [4], where information is generated and processed closer to the workplace. In the context of Computer-Supported Cooperative Work (CSCW) [5,6,7] and Hypermedia [8,9,10], we examine the potential of decentrally organized hypermedia applicatisns. One challenge is to combine the concepts and features of centralized and decentralized architectures.…”

Section: Ieeementioning

confidence: 99%

TeamBuilder-a consistently decentralized hyper-information system for team formation

Karduck

1994

Proceedings of IEEE International Conference on Multimedia Computing and Systems MMCS-94

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There is an increasing trend towards the decentralization of computation and human activities. Group activities are oriented around shared information.In this paper, the design and use of TeamBuilder, a CSCW prototype that demonstrates how to support team formation and teamwork by combining elements of computer networking, hypermedia and group user interfaces, is described. TeamBuilder creates and uses a decentrally organized hyper-information space and enables a transition between individual and cooperative activities. Motivation and RequirementsThere are three central issues around which networking revolves: people are distributedly located: information is distributed; and the need to build on the work of others.The sharing of timely information is a critical activity in economy as well as in science. While office workers coordinate activities, scientists rather form collaborations. Often, scientists collaborate by choice [I]. The maintenance of collaboration and the exchange of complementary skills are goals in themselves. Hereby, informal communication is often the primary means to establish and coordinate joint activities. On an individual level, we are already witnessing new ways of learning, from the experience of others, through the use of various electronic media and new information services [2]. These interactions are often spontaneous and of short duration. Informal teams are frequently being built between people, who get to work together by chance through electronic media. Thus, technology already enables new ways of building teams, often more spontaneous and less formal than those formed traditionally. On an organizational level, there is a particular need for learning from past experience within the organization. This demands an environment where individuals and groups are actively participating in building an information network of their expertise and the topics they have worked on or are working on. Currently, organizations such as the Commission of the European Communities support several information service activities [3]. It addresses a need that many people have to locate and retrieve information on research programs and related activities. Some intended benefits for the users are: fast and easy identification and access to required information; making contact with other participants who are actively seeking partners; easy, efficient collaboration between people. 666 0-8186-5530-5/94 $3.00 (9 1994 IEEE

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Section: Ieeementioning

confidence: 99%

TeamBuilder-a consistently decentralized hyper-information system for team formation

Karduck

1994

Proceedings of IEEE International Conference on Multimedia Computing and Systems MMCS-94

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“…We are also investigating interfaces for residential users and authoring tools to ease the task of creating multim~ia articles. More details on DEMON --including motivation for its user model, the system architecture and examples of articles --can be found elsewhere [7].…”

Section: The Demon Projectmentioning

confidence: 99%

Presenting multimedia documents over a digital network

Rosenberg¹,

Cruz²,

Judd³

1992

Network and Operating System Support for Digital Audio and Video

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This paper discusses an experimental prototype system for presenting integrated multimedia documents over a digital network. This prototype is the first in a series mvesttgating the requirements placed on the network in support of applications presenting multimedia information. The information consists of multiple media in digital form, including multi-font text, geometric graphics, photographic images, audio and motion video. The paper describes the motivation for this line of research and the initial focus and goals of our first totypg_. We describe the hardware comprising this prototype and the current status of our efforts. s is followed by a discussion of some early results we have obtained in dealing with integrated digital media, including motion video, with off-the-shelf components. Finally, we draw some conclusions about required support for digital media.

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“…• the standardization of video compression schemes, such as MPEG, JPEG, and H.261 [1][2] [3]; • progress in the telecommunications industry towards the asynchronous transfer mode protocol (ATM) for broadband ISDN, which can support the bit rates necessary for high resolution video services [4][5]; • research in groupware and computer supported cooperative work [6] [7].…”

Section: Introductionmentioning

confidence: 99%

Architectures for multi-source multi-user video compositing

Yun¹,

Messerschmidt²

1993

Proceedings of the First ACM International Conference on Multimedia - MULTIMEDIA '93

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Video compositing is the editing and integrating of many video images into a single presentation. Several single-user compositing systems have already been suggested, but the multiple users problem remains unstudied. We propose two new architectures for digital video compositing in a multi-user environment that are both memory-efficient and can operate in real-time. We show that under hard throughput and bandwidth constraints, a memoryless solution for transferring data from many video sources to many users does not exist. We overcome this using (i) a dynamic memory buffering architecture; and (ii) a constant memory bandwidth solution that transforms the sources-to-users transfer schedule into 2 schedules, then pipelines the computation. The architectures support opaque overlapping of images, arbitrarily shaped images, and images whose shapes dynamically change from frame to frame.

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Multimedia communications for users

Cited by 48 publications

References 6 publications

TeamBuilder-a consistently decentralized hyper-information system for team formation

TeamBuilder-a consistently decentralized hyper-information system for team formation

Presenting multimedia documents over a digital network

Architectures for multi-source multi-user video compositing

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