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IBM Journal of Research and Development

Issue 5 • Sept. 1968

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Displaying Results 1 - 11 of 11
  • The IBM 1975 Optical Page Reader Part I: System Design

    Publication Year: 1968, Page(s):346 - 353
    Cited by:  Papers (10)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (559 KB)

    The IBM 1975 Optical Page Reader, specially built for the Social Security Administration, reads over 200 fonts from quarterly employer reports printed by electric and manual typewriters, business machines, and high-speed printers. Since the SSA has no control over the means used by employers to prepare the reports, many variations in print quality are present. This paper discusses the problems inv... View full abstract»

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  • The IBM 1975 Optical Page Reader Part II: Video Thresholding System

    Publication Year: 1968, Page(s):354 - 363
    Cited by:  Papers (7)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (713 KB)

    An adaptive video thresholding system is used in the Page Reader to minimize recognition failures due to contrast and line width variation. The main threshold operator is a linear function of the average contrast over a specified area. Adjustments to the threshold level are made by circuits that compute the average line width in a character, and by circuits that filter out spatial noise in the vic... View full abstract»

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  • The IBM 1975 Optical Page Reader Part III: Recognition Logic Development

    Publication Year: 1968, Page(s):364 - 371
    Cited by:  Papers (7)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (468 KB)

    The design approaches which were used to specify feature measurement logic, recognition reference standards, and decision functions for a multifont character recognition system are discussed. The importance of an intuitive approach to design, as opposed to a fully automated approach, is emphasized. The nature of the problem required an intimate interaction between the designers, who investigated c... View full abstract»

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  • Time-Optical Control of a Moving-Coil Linear Actuator

    Publication Year: 1968, Page(s):372 - 379
    Cited by:  Papers (5)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (551 KB)

    The time-optimal control problem for a moving-coil linear actuator has been worked out by means of functional analysis and a related graphical procedure requiring only data from an impulse response. On the basis of experience with a test model, there is good correlation between the theoretical and the experimental methods. While the latter is accurate over only very short distances, the usefulness... View full abstract»

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  • Development of the IBM Magnetic Tape SELECTRIC® Composer

    Publication Year: 1968, Page(s):380 - 398
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1019 KB)

    The IBM Magnetic Tape SELECTRIC Composer (MT/SC) is a direct-impression (or “cold-type”) typesetting system that combines the recording capabilities and automatic operation of the Magnetic Tape SELECTRIC Typewriter with the proportional spacing, justification and multiple-type-size features of the SELECTRIC Composer. Intended to permit high-volume, high-quality composition at moderat... View full abstract»

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  • On the Measurement of Impurity Atom Distributions in Silicon by the Differential Capacitance Technique

    Publication Year: 1968, Page(s):399 - 409
    Cited by:  Papers (31)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (642 KB)

    A mathematical analysis is presented on the measurement of an impurity atom distribution in silicon by the differential capacitance technique. This analysis shows some inherent errors that can arise when the technique is applied to material containing a small impurity atom density. An important conclusion is that the differential capacitance measurement establishes the distribution of majority car... View full abstract»

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  • Recent Papers by IBM Authors

    Publication Year: 1968, Page(s):410 - 413
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    Reprints of the papers listed here may usually be obtained most eficiently by writing directly to the authors. The authors' IBM divisions and locations are identified as follows: ASDD is the Advanced Systems Development Division; CD, Components Division; DPD, Data Processing Division; FSD, Federal Systems Division; RES, Research Division; SDD, Systems Development Division and SMD, Systems Manufact... View full abstract»

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  • Patents Recently Issued to IBM Inventors

    Publication Year: 1968, Page(s):414 - 415
    IEEE is not the copyright holder of this material | PDF file iconPDF (245 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1968, Page(s):416 - 417
    IEEE is not the copyright holder of this material | PDF file iconPDF (284 KB)
    Freely Available from IEEE
  • Contents of previous two issues

    Publication Year: 1968, Page(s):420 - 421
    IEEE is not the copyright holder of this material | PDF file iconPDF (232 KB)
    Freely Available from IEEE
  • Errata [Erratum]

    Publication Year: 1968, Page(s): 420
    IEEE is not the copyright holder of this material | PDF file iconPDF (232 KB)
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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