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IBM Journal of Research and Development

Issue 1 • Date Jan. 1993

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Displaying Results 1 - 5 of 5
  • Architecture and performance of the ESPER-2 hard-disk drive servo writer

    Publication Year: 1993, Page(s):3 - 11
    Cited by:  Papers (5)  |  Patents (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1071 KB)

    The servo writer is known as the most accurate and sensitive tool on an HDD (hard-disk drive) manufacturing line. ESPER-2 is designed as a product-independent common servo writer which incorporates major advances in equipment cost, reduction of clean-room requirements, and writing accuracy. The servo writing process consists of two stages. The first stage writes the master servo pattern on as many... View full abstract»

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  • Proof of correctness of high-performance 3—1 interlock collapsing ALUs

    Publication Year: 1993, Page(s):12 - 21
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1015 KB)

    A 32-bit 3—1 interlock collapsing ALU, proposed to allow the execution of two interlocked ALU-type instructions in one machine cycle using an instruction-level parallel machine implementation, is shown to produce results equivalent to a serial execution of the instructions using a 2—1 ALU. The equivalence is shown by deriving tables which represent all possible requirements for the s... View full abstract»

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  • Electrical characterization and performance limits of a flexible cable

    Publication Year: 1993, Page(s):22 - 38
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2738 KB)

    The electrical performance of a flexible-cable test structure is characterized from low frequencies up to 25 GHz. The experimental results are used to develop and refine models which describe the performance of such cables, with particular emphasis on the contribution of dielectric and resistive losses, including skin effect. The capability of triplate flexible cables to provide high-bandwidth con... View full abstract»

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  • Recent publications by IBM authors

    Publication Year: 1993, Page(s):39 - 74
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (4564 KB)

    The information listed here is supplied by the Institute for Scientific Information and other outside sources. Reprints of the papers may be obtained by writing directly to the first author cited. Journals and books are listed alphabetically title; papers are listed sequentially for each journal. View full abstract»

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  • Recent IBM patents

    Publication Year: 1993, Page(s):75 - 80
    IEEE is not the copyright holder of this material | PDF file iconPDF (636 KB)
    Freely Available from IEEE

Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center