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Proceedings of the IEEE

Issue 9 • Date Sep 1993

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Displaying Results 1 - 7 of 7
  • Gigabit-density magnetic recording

    Publication Year: 1993, Page(s):1344 - 1359
    Cited by:  Papers (26)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1768 KB)

    A tutorial on the principles of magnetic recording is given. The enormous rate of areal density increase for the past thirty years as well as the principal technological changes behind such sustained progress are outlined. The general issues involved in gigabit-density recording and the features that are common to both IBM'S and Hitachi's gigabit efforts are explored. The principal recording compo... View full abstract»

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  • Using vector quantization for image processing

    Publication Year: 1993, Page(s):1326 - 1341
    Cited by:  Papers (49)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1892 KB)

    A review is presented of vector quantization, the mapping of pixel intensity vectors into binary vectors indexing a limited number of possible reproductions, which is a popular image compression algorithm. Compression has traditionally been done with little regard for image processing operations that may precede or follow the compression step. Recent work has used vector quantization both to simpl... View full abstract»

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  • An overview of electric vehicle technology

    Publication Year: 1993, Page(s):1202 - 1213
    Cited by:  Papers (136)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1264 KB)

    An overview of the present status and future trends in electric vehicle technology is provided. The emphasis is on the impact of rapid development of electric motors, power electronics, microelectronics, and new materials. Comparisons are made among various electric drive systems and battery systems. The market size of electric vehicles in the coming years and the potential electric vehicle impact... View full abstract»

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  • Signal modeling techniques in speech recognition

    Publication Year: 1993, Page(s):1215 - 1247
    Cited by:  Papers (157)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2872 KB)

    A tutorial on signal processing in state-of-the-art speech recognition systems is presented, reviewing those techniques most commonly used. The four basic operations of signal modeling, i.e. spectral shaping, spectral analysis, parametric transformation, and statistical modeling, are discussed. Three important trends that have developed in the last five years in speech recognition are examined. Fi... View full abstract»

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  • X-ray lithography-an overview

    Publication Year: 1993, Page(s):1249 - 1274
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2324 KB)

    The fundamentals of X-ray lithography are reviewed. Issues associated with resolution, wafer throughput, and process latitude are discussed. X-ray lithography is compared with other lithographic technologies; future advancements, such as X-ray projection lithography, are described. It is shown that the major barrier to the near-term success for X-ray lithography is the requirement for a defect-fre... View full abstract»

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  • Subspace-based signal analysis using singular value decomposition

    Publication Year: 1993, Page(s):1277 - 1308
    Cited by:  Papers (89)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2920 KB)

    A unified approach is presented to the related problems of recovering signal parameters from noisy observations and identifying linear system model parameters from observed input/output signals, both using singular value decomposition (SVD) techniques. Both known and new SVD-based identification methods are classified in a subspace-oriented scheme. The SVD of a matrix constructed from the observed... View full abstract»

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  • Possibilities of deep-submicrometer CMOS for very-high-speed computer logic

    Publication Year: 1993, Page(s):1311 - 1324
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    It is shown that room-temperature CMOS, which has rarely been considered suitable for very-high-speed computer logic, can have sufficient performance to be the post-ECL (emitter-coupled logic) high-speed device when deep-submicrometer technology is available. The possibilities of CMOS are evaluated in the context of the very many factors related to computer logic. In a case study, it is shown that... View full abstract»

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North Carolina State University