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TRON Project International Symposium. 1993., The 10th

Date 1-2 Dec. 1993

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  • Proceedings the Tenth Project International Symposium, 1993

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  • Bibliography Of The Tron Project (1984 - 1993)

    Page(s): 180 - 204
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    Activities of the TRON Project in these past ten yeas have produced a hrge aniount of technical results which are published as papers, books, arid reports. Because such publications of TRON are scattered among diverse journals, proceedings, technical reports, etc., it is difficult for the new TRON researchers and developers to discover relevant documents. The primary objective of this bibliography is to eliminate this difficulty, and to improve the accessibility of technical information of the TRON Project. Its contents are restricted to publications on technical issues; nontechnical publications are out of its scope. At, present, the bibliography contains more than 500 entries. Entries in this bibliography are classified into eight sections by their interests: books on the TRON Projecs, Specifimtions, and technical papers on general issues, TRON Specification CHIP, ITRON, CTRON, BTRON, and MTRON/HFDS. In each section, entries are first sorted in the order of publishing year. Next, entries with the same publishing year are sorted in the alphabetical order of their authors' names. View full abstract»

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  • Author index

    Page(s): 205
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  • Overview Of The Tron Project

    Page(s): 174 - 179
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    First Page of the Article
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  • Applying HC68K, an operating system based on CTRON specifications for a duplicated telecommunication system

    Page(s): 128 - 135
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    The authors outline the implementation methods of duplicated system control functions of HC68K, a basic operating system (OS) conforming to the CTRON interface specifications. Hitachi has been confirming the multiplex and realtime processing capability of HC68K for application to their ATM switching system. In development of a small-capacity ATM node they have improved reliability of HC68K with the creation of a duplicated system control function. This function improves modeling and portability of system control functions, such as an equipment management function by complying with the IROS specifications (CTRON specification base) of Nippon Telegraph and Telephone Corporation (NTT). It was confirmed that this system satisfies the function and performance objectives and demonstrates the effectiveness of the IROS (interface for real-time operating systems) specifications View full abstract»

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  • View ahead: the technology for deaf-blind individuals

    Page(s): 169 - 172
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    Thousands of people have the multiple handicap of partial or total sight and hearing loss. The author describes from his own experience what it is like to be without these senses. He examines the problem from the standpoint of information needs and discusses what technology can do to assist such individuals in obtaining information View full abstract»

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  • How design guidelines should evolve?-Methodology to update the guidelines in the TRON project

    Page(s): 37 - 40
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    A methodology to keep the design guidelines updated has been developed in the TRON project. It is important to collect feedback from users and designers about the acceptance of the design guidelines. A design competition of products based on the design guideline was held. This helped in gaining otherwise unavailable information to improve the design guidelines and to keep them acceptable View full abstract»

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  • Highly responsive implementation of the BTRON2 window system

    Page(s): 82 - 93
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    The authors describe the implementation mechanism of a window system for BTRON2 is an operating system that realizes advanced human-machine interfaces (HMIs). The include groupwares, gestures, assistive technology, post-it metaphor, and so on. The main purpose is to clarify mechanisms for highly-responsive implementation of the BRON2 window system. To increase its responsiveness, the authors propose adopting the following mechanisms: an R-tree for the data structure of a set of interaction objects in a window, fully-replaced data approach when sharing a window among multiple users on different machines, implementation with multiple concurrent tasks sharing the same data structures, priority-based real-time scheduling among these tasks. The authors describe the result of performance evaluations on the prototype system implemented using these mechanisms View full abstract»

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  • Enableware: adaptive technologies for disabled people on the TRON architecture

    Page(s): 166 - 168
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    The intensively computerised environments of the future will be characterized by large numbers of computers embedded in all kinds of every day objects, for the sake of greater comfort, convenience and security. The TRON project has devoted the past ten years to research and development based on the assumption that such a scenario will inevitably become a reality. To make computers readily accessible to everyone in the true sense of the term, as social infrastructure, it is of course necessary to develop the fundamental technologies making up that infrastructure; but consideration must also be made for culture and society. The TRON project is attempting to expand the scope of “usable by anyone”. One way is by devoting more attention to the needs of the disabled. This paper starts by outlining the basic approach in the TRON project to the notion of support for the disabled. Then it reports on specific ways in which this support is being implemented View full abstract»

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  • To be standardized or not to be standardized?-"Loose" standardization in the TRON specifications

    Page(s): 48 - 49
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    Standardization of operating system (OS) and the requirement that the full performance of the hardware should be obtained usually contradict. Loose standardization is the main approach to relieve this problem taken in the TRON project. The advantages and the problems of the approach were discussed aiming to make the way clear to relieve this problem in further improvements of the ITRON specifications View full abstract»

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  • Secure delegation of tasks in distributed systems

    Page(s): 98 - 112
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    The authors introduce the notion of task-delegation as compared to the delegation of rights only (rights-delegation). The reasoning behind the notion of task-delegation is presented, citing examples from the human world and from the realm of computers. This notion of task-delegation is captured in a 1-phase certification server (2PCS) which the authors develop as a hybrid between authentication servers (based on shared key cryptosystems). The 2PCS allows on enode to task-delegate to another in a secure manner, and it achieves a high level of security due to its underlying strong cryptosystem. Within the framework of the TRON architecture the features embodied within the 2PCS can be integrated within the CTRON architecture, either within a stand-alone server that mediates access to other CTRON servers (e.g., file server) and other TRON components, or within existing servers to guard access to their corresponding resources. The first option represents a more manageable solution since cryptographic information (such as keys) need not be replicated. Other servers can then be treated as principles equivalent to the BTRON workstations. In either approach, the authors believe that the notion of task-delegation and the security features of the 2PCS can be a useful step towards integrating security into the TRON architecture View full abstract»

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  • Information display method and process considerations in the TRON/GUI

    Page(s): 41 - 44
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    The authors describe information display methods and processes on the TRON human-machine interface specifications from a cognitive psychological aspect. In the GUI (graphical user interface) design work of system designing, the authors have extracted the main items of emphasis, simplification and consistency, respectively, from a series of information processing processes: sensual aspect - quick information detection; perceptual aspect - visual acquisition; and cognition aspect - understanding of content - considered GUI information display (hereafter called screen design) techniques. The GUI information display process shows that the steps of grasping, structuring (creating a hierarchy), visualizing (or making available), and evaluating information are necessary View full abstract»

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  • How to educate a true beginner about computers [BTRON user interface]

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    Unified operation/function based upon the concept centering on the real/virtual object model was discussed with comparisons made with other systems View full abstract»

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  • Porting classes and coding rules for C programs on CTRON

    Page(s): 144 - 155
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    For porting of a C language program, compilers at the porting source and destinations must interpret the program identically. This can lead that a portability scope is defined by the set of compilers that will interpret a program identically. Similarly, a group of programs can be delineated whose interpretation will be the same within a set of compilers. The authors propose a porting class which is a portability scope for the programs written in C language, and indicates the coding rules which must be observed to belong to each porting class. Methods are also indicated for checking whether a program adheres to those coding rules View full abstract»

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  • Complexity optimization technique for sound synthesis on digital sound processing architectures

    Page(s): 113 - 125
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    Synthesized sounds are practically used for many applications, such a HMI using a voice dialog, broadcasting of synthesized music and voices. Natural and realistic sounds are required for the applications and it is necessary for some applications, such as two or more voices dialog and music, to produce many sounds at one time. One generating method of realistic sounds is to generate them by simulation of an instrument or a human voice using its sound production model. Appearance of sound processing processors such a DSP (digital signal processor) enabled a practical method to use for only a single sound generation. There is a problem, however, in that the computational complexity of the simulation is large. The authors research a new technique for the solution of the problem. It is a synthesizer optimization technique which gets a sample sound, determines a suitable synthesis for producing the sound, sets up and optimizes parameters and tables, and generates an optimum synthesizer automatically. If a simulated sound is given for input, it can be produced by the synthesizer with smaller complexity than the simulation. The authors categorize the synthesis methods, and each complexity is discussed. The synthesizer optimization technique is constructed from this discussion. This technique is evaluated by comparing the complexity of the generated synthesizers and that of existing synthesizers. The result of the evaluation is that the optimized synthesizer has from 50% to 70% of the complexity of the existing synthesizer on average View full abstract»

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  • TRON HMI design analysis by the semiotic approach

    Page(s): 31 - 36
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    In order to evaluate and design the cognitive elements of HMI (human-machine interface) the authors propose an original method, semiotic analysis, which aims to reframe the knowledge gained through cognitive science by taking a semiotic approach. They describe three aspects of semiotic analysis: semantic structure analysis, sequential analysis, and expression-function analysis. Secondly, they present reviews of the TRON HMI specifications and home appliances developed by using this application. As a result the authors confirm that the concept of TRON HMI is based on language structure and has a good interface with cognitive science View full abstract»

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  • Performance evaluation by CTRON kernel benchmark

    Page(s): 156 - 164
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    A layered software structure (platform) is a means of improving portability and maintainability of software in information processing and switching systems. The authors have proposed a CTRON benchmark program for evaluating the performance of various platforms. They examined the following aspects, based on the results of platform evaluations using the CTRON benchmark program: methods for normalizing hardware performance, performance differences depending on OS implementation, performance comparison between CTRON-specification systems, and other realtime operating systems View full abstract»

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  • Problems of HMI guidelines for 3-D user interface

    Page(s): 29 - 30
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    The author discusses the 3-D extended HMI (human-machine interface) structure for future TRON HMI specifications and future problems for guidelines, problems of pointing devices, virtual space laws and feelings, and applications that had better not use 3-D HMI View full abstract»

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  • Human-machine interface for electronic equipment TRON/GUI

    Page(s): 45 - 46
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    In May 1993, the TRON Electronic Equipment Human-Machine Interface (IIMI) Research Group prepared a set of guidelines called the TRON Human-Machine Interface Specifications. These guidelines are an outcome of the Group's efforts that were made for ideal human-machine interfaces. In the area of human-machine interfaces, many studies (for example, those on legible screens, easy-to-use keyboards, etc.) have been conducted and reported. However, many experiments with different interfaces are still used in homes and offices, so users make extra efforts to operate such equipments because of the diversified operating display methods. The purpose of the guidelines (TRON Human-Machine Interface Specifications) is to ease and standardize the operations of home-use electronic equipments View full abstract»

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  • Performance evaluation of GMICRO/500 microprocessor for CTRON based kernel

    Page(s): 52 - 60
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    The GMICRO/500 is a high-performance 32-b microprocessor based on the TRON specification. The authors evaluate the performance of the GMICRO/500 under the CTRON based OS environment. They developed an evaluation system for the CTRON based kernel interface to evaluate the execution time of each system call under the several conditions. The authors applied this evaluation system to GMICRO/500 and GMICRO/300 processors. The performance of the GMICRO/500 which is measured with a behavior model simulator, and compared with the performance of the GMICRO/300 which is measured with a real machine. An advantage of the GMICRO/500's superscalar architecture is most derived when it operates with a secondary cache View full abstract»

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  • Building human interfaces for computerized environments

    Page(s): 21 - 28
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    The author describes an overview of the TRON human interface design guidelines and the course of their development. The guidelines apply to human-machine interface design, with a view to the coming of computerized environments View full abstract»

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