Browsing by Subject "Integrated Circuits, VLSI"

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    A general purpose VLSI median filter and its applications for image processing
    (IEEE, 1989) Karaman, Mustafa; Onural, Levent; Atalar, Abdullah
    A general-purpose median filter configuration consisting of two single-chip median filters is proposed. One of the chips is designed for applications requiring variable word-length and variable window size, whereas the other is for real-time applications. The architectures of the chips are based on odd/even transposition sorting. The chips are implemented in 3-μm M2CMOS using full-custom VLSI design techniques. The chips together with a reasonable external hardware can be used for the realizations of many median filtering techniques. The VLSI design procedure of the chips and their applications to different median filtering techniques for image processing are presented.
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    Piecewise linear asymptotic waveform evaluation for transient simulation of electronic circuits
    (IEEE, 1991-06) Dikmen, C. T.; Alaybeyi, M. M.; Topcu, Satılmış; Atalar, Abdullah; Sezer, E.; Tan, Mehmet Ali; Rohrer, R. A.
    A general purpose circuit simulation program, PL-AWE (piecewise linear asymptotic waveform evaluator) is developed especially for the analysis of VLSI circuits. PL-AWE uses the asymptotic waveform evaluation (AWE) technique, which is a new method to analyze linear(ized) circuits, and piecewise-linear (PL) models to represent nonlinear elements. AWE employs a form of Padeapproximation rather than numerical integration to approximate the behavior of linear(ized) circuits in either the time or the frequency domain. The authors discuss the internal workings of the program, and indicate its effectiveness in terms of several illustrative examples.