David K. Tennenhouse. Telemedia, networks and systems group annual report. Technical Report MIT/LCS/AR-001, MIT Laboratory for Computer Science, June 1992.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....a structured video system that extracts video attribute information and supports content based access, as well as video playback. The system offers a query based interface for searching and playback of relevant video segments (see Figure 2) Our implementation is based on two subsystems: VuSystem [10] a toolkit for recording, manipulating and playing video, and the Semantic File System [1] a storage subsystem with content based access to data. In the remainder of this paper we discuss the data model and its semantics (Section 2) the motivating design (Section 3) our prototype ....

David K. Tennenhouse. Telemedia, networks and systems group annual report. Technical Report MIT/LCS/AR-001, MIT Laboratory for Computer Science, June 1992.

....video to algebraic video files, ffl indexing of the algebraic video, ffl content based access to the data, ffl playback and browsing of the video, ffl user composition, reuse and editing of more complex video nodes. Our implementation is built on top of two existing subsystems: the VuSystem [18] and the Semantic File System [7] The VuSystem provides an environment for recording, processing and playing video. A set of C classes manage basic functions such as synchronizing video streams, displaying in a window, and processing video streams. TCL scripts control C classes and offer a ....

D. K. Tennenhouse. Telemedia, networks and systems group annual report. Technical Report MIT/LCS/AR-001, MIT Laboratory for Computer Science, June 1992. 19

....quality. The quality of digital multimedia systems is bound to improve as hardware performance increases. 5 However, the true advantage of digital multimedia systems lies through the ability to perform processing on media streams using socalled second generation multimedia applications [Tennenhouse92] 5 Assuming the operating system makes suitable provision for soft real time applications. 14 The real time processing of continuous media streams is enabling a wide variety of new application areas. For example, more natural user interfaces may be possible through use of real time ....

D Tennenhouse, M Ciholas, and J Davin. Telemedia, Networks and Systems Group Annual Report. Technical Report AR-001, Laboratory for Computer Science, MIT, 1992. (p 14)

....The current types of application, where the real time data is delivered to the human user, is only the first stage. As machines become more powerful the processing of the new data types will become common; such systems have been termed second generation by the multimedia group at MIT [Tennenhouse92]. Operating system support for multimedia is being studied in the Pegasus project. Here the idea of quality of service is being used as the processor scheduling paradigm. At the lowest level processes are guaranteed a minimum percentage of the CPU. The project has produced the architectural ....

D Tennenhouse, M Ciholas, and J Davin. Telemedia, Networks and Systems Group Annual Report. Technical Report AR-001, Laboratory for Computer Science, MIT, 1992. (p 14)

.... heterogeneous networking environments, from wide area to the desk area [8] ATM has many properties which make it well suited to the transport of real time (audio and video) information [1] In turn, many research groups are designing distributed multimedia systems centered around ATM networks [12, 6, 4]. With the use of ATM, a new class of devices is possible in which devices act as shared network resources and communicate with each other through ATM based protocols. In terms of multimedia, examples of such devices are video and audio capture boards, frame stores and video servers. This paper ....

....In terms of multimedia, examples of such devices are video and audio capture boards, frame stores and video servers. This paper describes an ATM network based video capture and processing peripheral device called the Vidboard. The Vidboard was designed in the context of the ViewStation project [12]. The ViewStation system is an all digital distributed multimedia system centered around a gigabit per second ATM network. The Vidboard was developed as a capture interface for the ViewStation environment. Full motion video is captured from an analog television source and transmitted to other ....

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Tennenhouse, D. Telemedia, Networks and Systems: Group Annual Report. MIT LCS Internal Report, Aug. 1992.

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