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IBM Journal of Research and Development

Issue 4 • July 1968

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Displaying Results 1 - 11 of 11
  • Automatic Dynamic Response Analyzer

    Publication Year: 1968, Page(s):286 - 299
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (867 KB)

    The Automatic Dynamic Response Analyzer (ADRA) is a laboratory tool for developing improved methods of characterizing and measuring the dynamic performance of integrated circuit logic packages. ADRA consists of ensembles of computer controlled electronic equipment which provide a suitable electrical environment for the logic unit under examination, subject the unit to appropriate patterns of shape... View full abstract»

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  • An Application of the Automatic Dynamic Response Analyzer

    Publication Year: 1968, Page(s):300 - 306
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (426 KB)

    An experiment to obtain the coefficients of a circuit delay equation was designed and implemented on the ADRA/M44 system in order to gain experience in the system's use. The process involves automatic calibration and diagnostic procedures, data collection under computer control and multivariate regression analysis. Some conclusions are drawn about the planning and use of computer controlled instru... View full abstract»

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  • A Balanced Capacitor Read-Only Storage

    Publication Year: 1968, Page(s):307 - 317
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (690 KB)

    The design of a control storage system of 90 nsec access time and 200 nsec cycle time with permanently stored microinstructions is described. The storage medium used is the capacitive coupling between two groups of orthogonal conductors forming an information plane and a sense plane. There are 2816 words of 100 bits each, divided over two gates. The selection of an address line in the information ... View full abstract»

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  • A New Technique for Wide-Band Video Recording

    Publication Year: 1968, Page(s):318 - 322
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (346 KB)

    An efficient means for distributing the information contained in a wide-band analog signal over two limited bandwidth channels is provided by using frequency modulation and “zero-crossing counting.” The new technique should accommodate at least twice the bandwidth that can be recorded or transmitted by the usual FM methods. Experimental results with a two-channel magnetic tape system... View full abstract»

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  • Pressurized High-Speed Development of Diazo Films

    Publication Year: 1968, Page(s):323 - 330
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (604 KB)

    The combination of a new high-speed process and developer unit which uses pressurized anhydrous ammonia gas offers a significant increase in the speed of developing diazo photomaterials. In addition to being up to 100 times faster than conventional ambient-pressure ammonia development processes, the new process and developer provide both flexibility and uniformity of sensitometric characteristics.... View full abstract»

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  • An Application of the Cooley-Tukey Algorithm to Equalization

    Publication Year: 1968, Page(s):331 - 334
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (373 KB)

    A new method is proposed to determine the tap settings of a delay-line filter for distortion correction of digital data after transmission by a voice line. The procedure described achieves approximately the optimal tap settings by solving a system of linear equations with a circulant matrix of coefficients. When the fast Fourier transform algorithm of Cooley and Tukey is used, the resulting quanti... View full abstract»

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  • Implicit Implementation of the Weighted Backward Euler Formula

    Publication Year: 1968, Page(s):335 - 336
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (243 KB)

    This communication describes how the weighted backward Euler formula, as applied to analyze electromechanical systems, can be implicitly implemented by replacing capacitors and inductors by resistors and voltage or current sources, respectively, and by replacing the driving functions by their first differences. This replaces the set of differential equations, which describes the capacitive voltage... View full abstract»

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  • Recent Papers by IBM Authors

    Publication Year: 1968, Page(s):337 - 339
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (263 KB)

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

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  • Patents Recently Issued to IBM Inventors

    Publication Year: 1968, Page(s):340 - 341
    IEEE is not the copyright holder of this material | PDF file iconPDF (292 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1968, Page(s):342 - 343
    IEEE is not the copyright holder of this material | PDF file iconPDF (244 KB)
    Freely Available from IEEE
  • Contents of previous two issues

    Publication Year: 1968, Page(s):344 - 345
    IEEE is not the copyright holder of this material | PDF file iconPDF (261 KB)
    Freely Available from IEEE

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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