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IEE Proceedings E - Computers and Digital Techniques

Issue 6 • Date November 1985

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Displaying Results 1 - 6 of 6
  • New trapdoor-knapsack public-key cryptosystem

    Publication Year: 1985, Page(s):289 - 292
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (414 KB)

    The paper presents a new trapdoor-knapsack public-key cryptosystem. The encryption equation is based on the general modular knapsack equation, but, unlike the Merkle-Hellman scheme, the knapsack components do not have to have a superincreasing structure. The trapdoor is based on transformations between the modular and radix form of the knapsack components, via the Chinese remainder theorem. The se... View full abstract»

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  • Real-time on-line pattern recognition of eye position and movement

    Publication Year: 1985, Page(s):293 - 308
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1707 KB)

    A pattern recognition technique has been successfully used as a noninvasive, accurate and sensitive method for direct on-line and real-time measurement of instantaneous eyeball positions and movements. The scheme uses a vidicon camera as the input to a microcomputer system. Both hardware and software windowing are used for tracking eye positions adaptively. The system can be applied to study both ... View full abstract»

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  • Feature determination and inexact matching of images of industrial components

    Publication Year: 1985, Page(s):309 - 315
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1494 KB)

    Techniques for the segmentation and recognition of images of overlapping industrial components in visually cluttered environments are described. Image segmentation is based on the Hough transformation of preprocessed edge data, employed as a predictive mechanism for line fitting, merging and redundancy checking, coupled with feedback verification. In the recognition phase, the extracted features a... View full abstract»

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  • Markov models for a multiple processor system with a shared bus

    Publication Year: 1985, Page(s):316 - 322
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (858 KB)

    A finite population queueing model applicable to a class of real-time multiple processor systems with a shared bus is developed and analysed. It assumes Poisson arrivals and services, and its service discipline is FIFO, with the restriction that a customer cannot be served for the (k + l)st time unless all customers have been served k times. The performance of the system is studied by evaluating i... View full abstract»

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  • Virtual memory for microcomputers

    Publication Year: 1985, Page(s):323 - 332
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1370 KB)

    The use and design of segmented virtual memories suitable for microcomputers is considered from the user interface through the system software to the hardware interface. The provision of a UNIX*-like interface within a segemented virtual machine is outlined. Performance measurements are presented of a paged, segmented system running real workloads. View full abstract»

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  • Completely decentralised communication control in microcomputer clusters

    Publication Year: 1985, Page(s):333 - 338
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (710 KB)

    Very closely located single-board or single-chip microcomputers, co-operating for a common task, can be linked as clusters, with their sizes being changed arbitrarily depending on the task parallelism and the resources available from each node (microcomputer). Intracluster communications are handled by identical bus/memory arbiters, one in each node. The arbiters switch microprocessors and memorie... View full abstract»

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