Proceedings of the IEEE

Issue 11 • Nov. 1986

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Displaying Results 1 - 18 of 18
  • [Front cover and table of contents]

    Publication Year: 1986, Page(s): c1
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  • The special section on magnetic information storage technology

    Publication Year: 1986, Page(s):1475 - 1476
    Cited by:  Patents (2)
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  • Scanning the issue

    Publication Year: 1986, Page(s): 1475
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  • Spectral analysis and discrimination by zero-crossings

    Publication Year: 1986, Page(s):1477 - 1493
    Cited by:  Papers (89)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1399 KB)

    We advance a coherent development of zero-crossing-based methods and theory appropriate for fast signal analysis. Quite a few ideas pertaining to zero-crossing counts found in the literature can be expressed and interpreted with the help of this more general setup. A central issue addressed in some detail is the fruitful connection which exists between zero-crossing counts and linear filtering. Th... View full abstract»

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  • Fundamentals of the magnetic recording process

    Publication Year: 1986, Page(s):1494 - 1512
    Cited by:  Papers (50)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1568 KB)

    The basic phenomena associated with the recording and reproduction of signals on magnetic recording media are described. Fields due to magnetized media and heads are reviewed along with their Fourier transforms. The playback-isolated voltage pulse and square-wave voltage spectrum are discussed in detail for various magnetization orientations. Descriptive models of the recording process are given f... View full abstract»

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  • Particulate recording materials

    Publication Year: 1986, Page(s):1513 - 1525
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2728 KB)

    Information (audio, video, or data) to be recorded magnetically is first encoded into a sequence of time-varying electrical signals which are used to drive a writing head, the magnetic field of which creates, on the moving tape or disk, a spatially varying pattern of magnetization. The reading process uses another head (or the same head) to reconvert this magnetization pattern into time-varying el... View full abstract»

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  • Thin-film recording media

    Publication Year: 1986, Page(s):1526 - 1539
    Cited by:  Papers (8)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1753 KB)

    Thin-film magnetic recording media are reviewed in this paper. Although the magnetic materials and deposition processes are necessarily discussed, this paper is intended to review film media from a broader perspective than is usually found in the literature. Therefore, the subjects of applications, magnetic properties pertinent to recording, materials and processes, and reliability receive balance... View full abstract»

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  • High-density magnetic recording heads

    Publication Year: 1986, Page(s):1540 - 1556
    Cited by:  Papers (41)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2128 KB)

    This paper outlines the important dimensions and parameters of high-density heads and discusses why each is important and how they are related. Among factors discussed are: head-to-media spacing, record gap size, media coercivity and remanence, record demagnetization fields, record gap-edge saturation in ferrite, metal, metal-in-gap, and thin-film heads, and head wear. Gap-edge straightness is dis... View full abstract»

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  • Magnetic recording systems

    Publication Year: 1986, Page(s):1557 - 1569
    Cited by:  Papers (11)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2921 KB)

    This review of magnetic recording systems concentrates on developments in two particular areas: the video-tape recorder and the rigid disk drive. The consumer VCR represents the state of the art for analog in-contact recording, while the rigid disk drive exemplifies digital recording with rapid access. Various aspects of the mechanical configurations, track-following techniques, heads and media, a... View full abstract»

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  • Magnetooptics: A thermomagnetic recording technology

    Publication Year: 1986, Page(s):1570 - 1581
    Cited by:  Papers (6)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1316 KB)

    Erasable magnetooptic (MO) recording is viewed as a possible successor to electromagnetic recording that is used today in high-performance disk drives for mainframe computers, hard disks, and floppy disks for personal computers and magnetic tape drives. A large number of rare earth-transition metal alloys have been investigated for use as the magnetic recording material. The properties of the film... View full abstract»

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  • Recent development in magnetic-bubble memory

    Publication Year: 1986, Page(s):1582 - 1590
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2059 KB)

    The magnetic-bubble memory-the new solid-state nonvolatile memory-has taken a prominent place in today's memory market. It is widely used in industrial and information area, because it is reliable, maintenance-free, and durable. Improvements on bubble materials, processing, and chip design, especially Permalloy tracks, led magnetic-bubble memory to 4-Mbit devices which are now commercially availab... View full abstract»

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  • An optoelectronic adder

    Publication Year: 1986, Page(s):1593 - 1595
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    First Page of the Article
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  • A comparison between two methods to generate 1/fγnoise

    Publication Year: 1986, Page(s):1595 - 1596
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (211 KB)

    Two methods to design 1/fγnoise generators are reviewed and compared. The first one sums Lorentzian spectra obtained from the thermal noises of some resistors each one with a capacitor in parallel; the second one performs a proper filtering of a white-noise source. In that case, more precise considerations and more complete design rules are given. View full abstract»

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  • On the prediction of a band-limited signal from past samples

    Publication Year: 1986, Page(s):1596 - 1598
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (284 KB)

    An alternate proof is given of a recent result due to A. Papoulis on predicting the current value of a wide-sense stationary band-limited random process in terms of its past samples. The possibility of such prediction is shown to be equivalent to the completeness of a certain set of complex exponentials on an interval, a property that also allows extension to the prediction of deterministic band-l... View full abstract»

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  • Comments on "A note on the predictability of band-limited processes"

    Publication Year: 1986, Page(s): 1596
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (115 KB)

    We show that the problem presented in the above letter [1] by Papoulis has been proved by others [3]-[6] using different methods. We present a much simpler proof which covers random and deterministic signals with uniform or nonuniform sampling. View full abstract»

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  • Handbook of software engineering

    Publication Year: 1986, Page(s): 1599
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  • Book alert

    Publication Year: 1986, Page(s): 1599
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  • [Back cover]

    Publication Year: 1986, Page(s): c4
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North Carolina State University