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[1993] Proceedings of the IEEE Workshop on Real-Time Applications

13-14 May 1993

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  • Proceedings of the IEEE Workshop on Real-Time Applications (Cat.No.93TH0559-5)

    Publication Year: 1993
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    Freely Available from IEEE
  • Software architecture in realtime systems

    Publication Year: 1993, Page(s):198 - 203
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Software architecture is receiving attention as engineers search for high leverage representations and tools for system design and analysis. The author's approach to software architecture addresses both system structure and communication behavior from four different views: conceptual, module, code and execution. A system is described within a view using domain-specific components and connectors. C... View full abstract»

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  • A look at the current automated capabilities of traceability

    Publication Year: 1993, Page(s):204 - 206
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    The development of large scale, real-time military systems requires the tracing of requirements as mandated by DOD-STD-2167A. In order to comply with this requirement it is necessary to use an automated traceability tool. The paper examines the process and criteria for evaluating traceability tools for use with real-time system developments View full abstract»

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  • Towards hard real-time system engineering

    Publication Year: 1993, Page(s):207 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    One needs to develop (for application) usable models to design dynamic reconfigurable distributed hardware and software systems, supporting permanently available computer resources and hard real-time constraints. In order to develop such a model one needs to look at the development process of an actual application. The specific application exhibiting all the above requirements is a micro satellite... View full abstract»

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  • Embedded real-time intelligence in the physical layer of telecommunication networks

    Publication Year: 1993, Page(s):34 - 38
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The paper presents a development environment for the implementation of distributed real-time intelligence in the physical layer of optical telecommunication networks. An investigation is made into the meaning of the term intelligence in present-day telecommunication context. It is shown that the availability of local real-time intelligence on the physical network layer is becoming essential for th... View full abstract»

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  • Real-time computer systems: current and future trends

    Publication Year: 1993, Page(s):2 - 6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The author presents the state-of-the-art of real-time computing systems by emphasizing those developments likely to have impact on future real-time systems. The real-time systems based on industry standards are introduced, and the future trends in operating systems development are discussed View full abstract»

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  • Real-time environment modeling

    Publication Year: 1993, Page(s):142 - 146
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Much has been made of recent advances in software development regarding software reusability as a means of making systems easier to develop and maintain and making (as the name implies) it possible to reuse significant portions in other related systems development, further reducing development and maintenance efforts. Real-time systems pose both unusual problems and unique opportunities in this ar... View full abstract»

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  • An adaptive noise cancelling system used for beam control at the Stanford Linear Accelerator Center

    Publication Year: 1993, Page(s):212 - 215
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The SLAC Linear Collider now has a total of twenty-four beam-steering feedback loops used to keep the electron and positron beams on their desired trajectories. Seven of these loops measure and control the same beam as it proceeds down the linac through the arcs to the final focus. Ideally each loop should correct only for disturbances that occur between it and the immediate upstream loop. In fact... View full abstract»

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  • Implications of fault management and replica determinism on the real-time execution scheme of VOTRICS

    Publication Year: 1993, Page(s):39 - 43
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The fault tolerant architecture VOTRICS focuses on the use of n-modular active replication of hardware. Hardware and link failures are detected by voting mechanisms realized in software. The use of active replication and the mechanisms for activities such as fault management, recovery, or keeping correct replicas synchronized (even in the presence of faults) have influences on the chosen system mo... View full abstract»

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  • Real time multitasking design with a graphical tool

    Publication Year: 1993, Page(s):8 - 11
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    LACATRE is a graphical language intended to help in design for applications requiring multitasking real time executives. Within the software life cycle, it is used for both preliminary and detailed design. The paper presents new high level objects destined to facilitate the link between commonly used methods for specification and design and the detailed design using multitasking executives. The pa... View full abstract»

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  • Software reengineering in a C3I domain

    Publication Year: 1993, Page(s):148 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The authors present a strategy for software reengineering of applications in the Command, Control, Communications, and Intelligence (C3I) domain with focus on the inherent real-time response requirements. The reengineering strategy is presented within the context of a typical DoD-STD-2167A software development life cycle. They define a methodology for software reuse, language translatio... View full abstract»

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  • Resource sharing of real-time applications with other applications

    Publication Year: 1993, Page(s):87 - 91
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Most real-time applications run on dedicated system, to eliminate the uncertainty that may arise if other applications are running on the system. The resource requirement for the real-time application is determined on the basis of the system's ability to provide fault tolerance under the worst case execution time assumption. Costs of such systems will be better justified, if the real-time applicat... View full abstract»

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  • Bounds of start and completion times of application tasks on the RTEM system

    Publication Year: 1993, Page(s):54 - 58
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The author studies the start and completion times of application tasks on RTEM system, a descendant of MAFT developed at AlliedSignal. The RTEM workload consists of a set of periodic tasks, each of which is executed redundantly on the system for fault-tolerance. A priority based nonpreemptive list scheduling algorithm is used for task scheduling. The distributed agreement mechanism used to ensure ... View full abstract»

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  • A knowledge-based approach for the debugging of real-time multiprocessor systems

    Publication Year: 1993, Page(s):23 - 28
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Todays' real-time systems become ever more complex and multiprocessor hardware starts pervading many types of equipment. This complexity indicates that real-time programming has matured into a true software engineering discipline which demands the appropriate set of tools for the support of the entire system lifecycle. Since studies show that debugging takes about half of the development time it i... View full abstract»

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  • Applying formal methods to an embedded real-time avionics system

    Publication Year: 1993, Page(s):46 - 49
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    The authors present an application of formal development methodology to an actual real-time embedded system. The formal methods used are based on Modechart a graphical state specification language for real-time systems, whose formal semantic definition provides the basis for analysis. The specifications may be automatically simulated, or verified with respect to user-provided safety, liveness, and... View full abstract»

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  • On real time network integration in a manufacturing application

    Publication Year: 1993, Page(s):12 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    The authors have been involved in the study and design of alternative architectures for computer numerical controller, CNC, machines. The CNC machines are intended to be finally integrated into a school project which aims at developing a complete flexible manufacturing system. They present the overall architecture of the machine. This is necessary to understand the distinction between the real tim... View full abstract»

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  • A real-time software controller for a digital model railroad system

    Publication Year: 1993, Page(s):126 - 130
    Cited by:  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The paper describes a real-time software controller for a digital model railroad. The Unix real-time primitives of fork, pipe, and signal are used to perform interprocess communication among three concurrently executing tasks, (1) a scanning task, (2) a scheduler and collision avoidance task, and (3) a graphical user interface (GUI) task. The software engineering objective of this real-time system... View full abstract»

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  • Real-time data acquisition in high-energy physics experiments

    Publication Year: 1993, Page(s):112 - 115
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Gives an overview of the field of real-time data acquisition in high-energy physics experiments. It presents the problems encountered in real-time data acquisition and describes current solutions to some of them. It is intended as a tutorial introduction, having the main purpose to educate non-physicists about the challenges met by the designers of computer systems for supercolliders, the largest ... View full abstract»

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  • A real-time image filtration system

    Publication Year: 1993, Page(s):153 - 154
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (100 KB)

    A system for performing highly parallel, predictable real-time image filtration is described. The application software was developed using a special class of abstract data types (ADT) constructed in the RT-X language which has predictable execution times. The filtration algorithm is based on a Universal Image Algebra. Additional image processing applications such as feature extraction via edge det... View full abstract»

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  • Putting OO to work: results from applying the object-oriented paradigm during the development of real-time applications

    Publication Year: 1993, Page(s):166 - 170
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The paper gives an overview of some results and lessons learned from the application of object-oriented (OO) techniques to real-time systems development. These results have been obtained within the scope of a research project which investigates what advantages can be achieved applying OO issues to real-time systems development, and what improvements in the existing OO methods are needed in order t... View full abstract»

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  • The design of real-time applications

    Publication Year: 1993, Page(s):178 - 182
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Complex real-time applications require a disciplined approach at the design stage. Unfortunately, existing design methods are not wholly appropriate for use with real-time applications. Even methods that have been developed specifically for this purpose fail to result in provably correct designs that are easily understood. Seven essential criteria of a suitable design method are given, and one pot... View full abstract»

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  • Rate-monotonic analysis of an advanced field artillery data system

    Publication Year: 1993, Page(s):92 - 96
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The Advanced Field Artillery Tactical Data System (AFATDS) is a multiserver automated command and control system for fire support operations. The authors applied rate-monotonic analysis to Version 1 of the software. They developed two models. The first model focuses exclusively on application-level tasks; the second model considers effects of the UNIX run-time system. Analysis of these models give... View full abstract»

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  • On the design of real-time telecommunication systems

    Publication Year: 1993, Page(s):59 - 63
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The Design, Analysis and Synthesis Environment (DASE) has been developed to aid the designer in exploring the design space of telecommunication systems at the architectural level of design abstraction. DASE utilizes an internal representation called DSL (Design Specification Language) to capture the design intent and simulate, reconfigure and experiment with models using a DSL simulator. These fea... View full abstract»

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  • Design of embedded hard real-time applications with predictable behaviour

    Publication Year: 1993, Page(s):193 - 197
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In contrast to most of the other studies which only consider selected topic(s) and typically deal with issues of higher levels of design, the research project outlined uses a holistic approach to real-time application design issues. It is set up in layers starting with a predictably behaving computer hardware architecture, followed by an appropriate programming language and, finally, a tool for au... View full abstract»

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  • Multimedia-integrated real-time control systems

    Publication Year: 1993, Page(s):29 - 33
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Multimedia applications are becoming pervasive and are expected to be used in advanced process control systems where image data is related to higher order material qualities. The authors have analyzed real-time control applications and their needs. A necessary component to support such a distributed multimedia integrated control system is the need for network services that support both the real-ti... View full abstract»

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