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Singapore ICCS '94. Conference Proceedings.

14-18 Nov 1994

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  • Integration of upper layers of computers and telephony switches for IN

    Publication Year: 1994, Page(s):964 - 968 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    We present an architecture of CSTA, an OSI-application layer protocol that links the telecommunications and data processing environments to support a variety of applications. It allows flexible creation of new telecommunications services and applications. It allows computer users and applications to invoke telecommunications services on the switch View full abstract»

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  • Providing support for real-time multimedia data transfer

    Publication Year: 1994, Page(s):969 - 973 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    This paper describes the architecture of a front end system able to transfer real-time multimedia data. The system behaves as an interface between different multimedia sources/sinks such as audio/video devices, and an ATM network. Three important points of our work are described: the hardware architecture that consists of a parallel processing platform and external devices interfaces; the operatin... View full abstract»

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  • Hybrid 3D subband-predictive VQ coder for VLBR applications

    Publication Year: 1994, Page(s):1112 - 1116 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    A dual-mode 3D based subband video coder operating at very low bit rates for PSTN and mobile networks, is proposed. When operating in baseline mode, the input video sequence is coded using a hybrid SIM3 algorithm. In 3D mode, the encoder performed subband temporal-spatial analysis using a short length QMF filter on the motion compensated frame difference frames and the resulting subbands are vecto... View full abstract»

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  • Network time slots allocation by using a time multiplexed switch in a telecommunications architecture

    Publication Year: 1994, Page(s):1149 - 1153 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Network time slots are used to set up a connection during call processing. This paper proposes a design of a time multiplexed switch to allocate network time slots in a telecommunications architecture. Network time slots can be allocated by a processor in the administrative module. Network time slots allocation by using the time multiplexed switch speeds up path hunt for line-terminating calls bec... View full abstract»

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  • Communication processing techniques for multimedia systems

    Publication Year: 1994, Page(s):974 - 980 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    Key techniques required for communication processing in multimedia systems are (1) high-speed protocol processing of every data packet and (2) simultaneously processing of many sessions. This paper proposes three solutions of high-performance protocol processing: protocol data unit management using page management method, assembling and disassembling of header and contents in hardware, and resched... View full abstract»

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  • Analysis of electromagnetic scattering by a rotating rotor with flat blades

    Publication Year: 1994, Page(s):1044 - 1048 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    The problem of amplitude and frequency modulated waveforms of an electromagnetic wave due to the scattering by a slowly rotating rotor with metal plate(s) is investigated in this study. Equivalent current method (ECM) together with geometrical theory of diffraction (GTD) is used to analyze the modulated waveforms. The modulated waveforms depend on the orientation and dimension of the object, its r... View full abstract»

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  • Eliminate information inconsistency for X.500 directory

    Publication Year: 1994, Page(s):1180 - 1184 vol.3
    Cited by:  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper introduces a method of avoiding information inconsistency in X.500 directories supporting real services. The basic X.500 directory mechanism does not define the relationships between the attribute values of the different entries. If some attribute values are related to other attribute values of different entries, information inconsistency sometimes occurs. To extended the directory serv... View full abstract»

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  • Multiresolution block matching algorithm for motion estimation in video coding

    Publication Year: 1994, Page(s):1117 - 1120 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Motion estimation is the most time-consuming task in current video coding standards. In this paper, we present a multiresolution block matching (MBM) algorithm for motion estimation in low bit-rate video coding. The proposed algorithm can adapt the spatial resolution of the local motion field according to the image scene. Simulations using real image sequences show that this algorithm not only red... View full abstract»

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  • Performance bounds on traffic predictor models for dynamic routing

    Publication Year: 1994, Page(s):1018 - 1022 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    The paper studies the problem of identifying and tracking the unknown and possibly time-varying parameters λ (arrival rate) and 1/μ (mean holding time) of a traffic stream. Soong (see SICON/ICIE93 conf., Singapore, Sept. 1993) developed two main predictor models. It is the purpose of this paper to: (i) motivate several modifications to the models (concentrating mostly on M/M/n/n queue) t... View full abstract»

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  • Algorithms for efficient bandwidth utilization on survivable telecommunication networks

    Publication Year: 1994, Page(s):1154 - 1157 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    This paper suggests a line restoration (rerouting) algorithm based on the minimum cost path (rather than the k-shortest path) for protection possible link failures and also develops a spare capacity determination algorithm based on the k-shortest path for the restoration algorithm. The restoration algorithm can supplement telecommunication networks with dedicated facility restoration mechanisms, w... View full abstract»

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  • MEmail: a distributed multimedia electronic mail system

    Publication Year: 1994, Page(s):981 - 985 vol.3
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    MEmail (Multimedia Electronic Mail System) is a distributed electronic mail system which is designed to allow clients to share and manipulate multimedia messages from a Mail server and Media server. The use of client-server paradigm enables the system to cater to different client platforms, thereby allowing different workstations and PCs to share messages. MEmail extends the model of existing inte... View full abstract»

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  • Application of TLR and TAR calibration techniques to waveguide measurements near cut-off frequency

    Publication Year: 1994, Page(s):952 - 954 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    The TLR and TAR calibration techniques are applied to waveguide measurements over the entire waveguide band, as well as over the range near the WR TE10 cut-off frequency. The measurement results corrected by these two methods are compared with each other View full abstract»

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  • Analysis of a credit manager for traffic regulation in a high speed network system with finite buffer

    Publication Year: 1994, Page(s):1004 - 1007 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    We investigate a high speed network system with finite buffer subject to flow control by a credit manager. The main purpose of the credit manager is to smooth out the burstiness of the input process, thereby making it easier for the network to handle large amount of data without undue delays, congestion or buffer overflow. We model the system as a quasi-birth-death (QBD) process for which the stea... View full abstract»

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  • Providing a white page service to the Human Genome Project

    Publication Year: 1994, Page(s):1185 - 1189 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    As the Human Genome Project grows, so does the number of genome users, activities, organizations, and databases. There is a need to provide an electronic white page service to genome users, so that a genome user can for instance find out the e-mail address of a remote genome user or the network address of a genome database server. Because of the distributed and heterogeneous nature of the Human Ge... View full abstract»

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  • Thresholding for edge detection using fuzzy reasoning technique

    Publication Year: 1994, Page(s):1121 - 1124 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    Threshold values for extracting effective sketch features are different according to images. Moreover, a global threshold cannot extract sketch features effectively because of the fact that there are various types of objects and regions having many different gray levels within a single image, and the human visual characteristics are more sensitive to the sketch features in dark regions than in bri... View full abstract»

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  • Design of adaptive mesh routing chip

    Publication Year: 1994, Page(s):1023 - 1026 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    Design of an adaptive router chip with minimum possible delay is described. The designed router is for message passing between computers which are connected in 2D mesh topology. The implemented algorithm is the negative-first adaptive wormhole routing algorithm which is deadlock free, livelock free, minimal, and maximally adaptive. The functional blocks of the router and asynchronous interfaces be... View full abstract»

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  • Emerging packet network technologies and services

    Publication Year: 1994, Page(s):1158 - 1163 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Customer needs demand faster, reliable and integrated solutions to all kind of service needs: voice, text, image, video and data. There is increasingly more demand for speed and throughput on LANs, MANs, and WANs. Broadband ISDN is expected to be the backbone network technology that will integrate LANs, MANs, and WANs in a seamless manner. Initial introduction of ATM network is suggested via an ov... View full abstract»

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  • Cooperative multimedia structures management

    Publication Year: 1994, Page(s):986 - 990 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    This paper presents an architecture and an organization of a management system for cooperative multimedia structures. The architecture is based on the integrated management concept, integrating management functionalities for broadband communications, and also for cooperative structures which imply the management of multipoint multimedia communications View full abstract»

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  • Analysis and optimization of speech coder algorithm for CDMA digital cellular

    Publication Year: 1994, Page(s):870 - 874 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    CELP coding is a powerful technique for the realization of high-quality speech coders operating at variable bit rates. The paper describes an implementation of a QCELP coder algorithm for CDMA. In addition, a hardware implementation for improving the speech coding rate of QCELP speech coders is explored. The coder can operate at different bit rates by simply comparing the energy in the frame with ... View full abstract»

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  • Measuring complex permittivity and permeability with partially filled waveguide

    Publication Year: 1994, Page(s):955 - 958 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    A partially filled waveguide is used to measure complex permittivity and permeability simultaneously at microwave in this paper. A waveguide partially filled with material under test is measured by an automatic network analyser. The “mode match” method is used to analyse the higher order mode in the waveguide. Both theoretical and experimental aspects are discussed in detail. Experimen... View full abstract»

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  • Bounds on synchronized handoff performance in microcellular radio systems

    Publication Year: 1994, Page(s):1103 - 1107 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    In this paper we analyse the performance of a synchronized call handoff algorithm called the Hierarchical Optimization Handoff Algorithm (HOHA). New results are presented with the derivation of an analytical model which describes the behaviour of the HOHA and provides an upper bound on its performance View full abstract»

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  • Optimal scheduling for multiclass queues with blocking

    Publication Year: 1994, Page(s):1008 - 1012 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    A problem of optimal scheduling of multiple queues competing for service at a single station is considered, where each queue has a finite buffer and the service may be class dependent. The cost is linear in the number of waiting customers and also includes the cost of customers lost due to blocking upon arrival to a full queue. The scheduling problem is solved by converting to a discrete Markov de... View full abstract»

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  • A networked interoffice communication expert system

    Publication Year: 1994, Page(s):1218 - 1221 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    All activities in an organization require or produce information. Therefore, a document is not only the main information carrier but also a central aid for the integration of office functions. The modern office systems manage a wide variety of documents, which may include text, images, graphics, data, or voice. Document interchange facilities play an essential role in integrating office systems an... View full abstract»

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  • Performance evaluation of a software architecture for real-time call processing

    Publication Year: 1994, Page(s):1208 - 1212 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Computers running under the UNIX operating system are used as adjunct processors to a switch to share call-processing responsibilities. In this architecture, call-processing tasks inside the adjunct processors are embedded in UNIX user processes. The author built a discrete-event driven, C-based, UNIX simulation model at a level of detail that allows one to obtain the statistics of many system tas... View full abstract»

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  • Design and performance evaluation of a communication protocol for an information communication processing system

    Publication Year: 1994, Page(s):1200 - 1203 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The problem of how to manage communication networks and network construction systems that are diverse and complex is discussed. The authors consider the necessity of network management systems which can supply information users with enhanced information services as well as monitoring and controlling network resources. The International Standard Organization (ISO) and ITU-T have been actively execu... View full abstract»

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