IEEE Transactions on Circuits and Systems II: Express Briefs

Issue 7 • July 2006

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Displaying Results 1 - 25 of 25
  • Table of contents

    Publication Year: 2006, Page(s):c1 - c4
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

    Publication Year: 2006, Page(s): c2
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  • Bifurcation analysis and its experimental validation for a hysteresis circuit oscillator

    Publication Year: 2006, Page(s):517 - 521
    Cited by:  Papers (6)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB) | HTML iconHTML

    This brief deals with the bifurcation analysis and its experimental validation for a hysteresis circuit oscillator. The bifurcation analysis of the ideal oscillator is carried out by resorting to numerical continuation techniques that corroborate and expand previous results. The experimental confirmation is obtained by means of both a proper circuit implementation and a measurement setup used for ... View full abstract»

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  • Flexible hardware-friendly digital architecture for 2-D separable convolution-based scaling

    Publication Year: 2006, Page(s):522 - 526
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB) | HTML iconHTML

    There is not a single scaling technique that suits all kind of images. Final image quality (IQ) depends not only on the scale factor but also on the type of image (photo, CAD, Text...) the user is willing to print or display. Formally, any convolution-based scaling operation can be decomposed in three steps: an anti-aliasing filter, image reconstruction by continuous convolution and resampling to ... View full abstract»

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  • Chosen plaintext attack on a cryptosystem with discretized skew tent map

    Publication Year: 2006, Page(s):527 - 529
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB) | HTML iconHTML

    An encryption system with discretized skew tent map has been proposed recently by N. Masuda . However, there is a fundamental weakness with this chaotic cryptographic scheme. In this paper, a chosen plaintext attack requiring only two plaintexts is proposed. An improved version of this attack that narrows the key space need to be searched is also suggested. The test results demonstrate that this e... View full abstract»

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  • An in-place architecture for the deblocking filter in H.264/AVC

    Publication Year: 2006, Page(s):530 - 534
    Cited by:  Papers (33)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    This brief presents an in-place computing design for the deblocking filter used in H.264/AVC video coding standard. The proposed in-placed computing flow reuses intermediate data as soon as data is available. Thus, the intermediate data storage is reduced to only the four 4 × 4 blocks instead of whole 16 × 16 macroblock. The resulting design can achieve 100 MHz with only 13.41K gate co... View full abstract»

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  • Robust schur stability with polynomial parameters

    Publication Year: 2006, Page(s):535 - 537
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (123 KB) | HTML iconHTML

    We propose a stability test for discrete-time systems whose coefficients depend polynomially on some bounded parameters. The test is a particular form of Positivstellensatz, appeals to sum-of-squares polynomials and can be implemented as a semidefinite programming problem. Although implementable only in relaxed form, due to the necessity of limiting the degrees of the polynomial variables involved... View full abstract»

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  • A more general approach to the filter sharpening technique of Kaiser and Hamming

    Publication Year: 2006, Page(s):538 - 540
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (91 KB) | HTML iconHTML

    Over the years, several authors have described a simple technique for filter sharpening. We present a simple explanation of how filter sharpening works and when it will not work. We show that filter sharpening is more broadly applicable than previously noted. We also show that even when filter sharpening does not work in the accepted sense, it still improves the filter's performance. View full abstract»

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  • Kickback noise reduction techniques for CMOS latched comparators

    Publication Year: 2006, Page(s):541 - 545
    Cited by:  Papers (89)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    The latched comparator is a building block of virtually all analog-to-digital converter architectures. It uses a positive feedback mechanism to regenerate the analog input signal into a full-scale digital level. The large voltage variations in the internal nodes are coupled to the input, disturbing the input voltage-this is usually called kickback noise. This brief reviews existing solutions to mi... View full abstract»

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  • Force-balance interface circuit based on floating MOSFET capacitors for micro-machined capacitive accelerometers

    Publication Year: 2006, Page(s):546 - 552
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    The feasibility of a force-balance interface based on a second-order delta-sigma (ΔΣ) modulator for capacitive sensors has been analyzed in order to delimit the requirements to assure system stability for a given set of constraints related to the sensor-modulator system. A ΔΣ modulator based on a switched-capacitor architecture with floating MOSFET capacitors has been imple... View full abstract»

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  • Delay-dependent exponential stability of delayed neural networks with time-varying delay

    Publication Year: 2006, Page(s):553 - 557
    Cited by:  Papers (140)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    In this brief, free-weighting matrices are employed to express the relationship between the terms in the Leibniz-Newton formula; and based on that relationship, a new delay-dependent exponential-stability criterion is derived for delayed neural networks with a time-varying delay. Two numerical examples demonstrate the improvement this method provides over existing ones. View full abstract»

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  • Parallel scrambler for high-speed applications

    Publication Year: 2006, Page(s):558 - 562
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB) | HTML iconHTML

    In order to improve the speed limitation of serial scrambler, we propose a new parallel scrambler architecture and circuit to overcome the limitation of serial scrambler. A very systematic parallel scrambler design methodology is first proposed. The critical path delay is only one D-register and one xor gate of two inputs. Thus, it is superior to other proposed circuits in high-speed applications.... View full abstract»

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  • Full-order and reduced-order observers for Lipschitz descriptor systems: the unified LMI approach

    Publication Year: 2006, Page(s):563 - 567
    Cited by:  Papers (53)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    This brief considers a new observer design for a class of continuous-time descriptor systems with Lipschitz constraint. Both types of full-order and reduced-order observers are constructed by a unified linear matrix inequality (LMI) approach. Under the sufficient condition in the form of LMI, the errors are guaranteed to be exponentially convergent. An illustrative example is presented to show the... View full abstract»

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  • A free but efficient low-voltage class-AB two-stage operational amplifier

    Publication Year: 2006, Page(s):568 - 571
    Cited by:  Papers (64)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB) | HTML iconHTML

    A simple and efficient low-voltage two-stage operational amplifier with Class-AB output stage is introduced. It has a large effective output current boosting factor (∼50) and close to a factor 2 bandwidth enhancement. This is achieved at the expense of minimum increase in circuit complexity and no additional static power dissipation. Experimental verification of the characteristics of the prop... View full abstract»

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  • Independent common-mode and differential-mode design of fully differential analog filters

    Publication Year: 2006, Page(s):572 - 576
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    Fully differential filter design is usually made departing from a single-ended prototype. This procedure guarantees the desired differential-mode response, but does not take into account common-mode dynamics, which could present nonacceptable transient responses or stability problems. A state-space design technique, which provides control of both differential and common-mode responses, is proposed... View full abstract»

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  • Leakage effects in metal-connected floating-gate circuits

    Publication Year: 2006, Page(s):577 - 579
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB) | HTML iconHTML

    Floating-gate circuits are useful in many analog applications, although controlling the charge stored on floating gates complicates such circuits. It has been observed that when floating poly gates are connected to metal layers, initial charge is eliminated during fabrication. This Brief presents an alternative to a previously published explanation for this effect. Experiments show that leakage th... View full abstract»

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  • An automatic coefficient design methodology for high-order bandpass sigma-delta modulator with single-stage structure

    Publication Year: 2006, Page(s):580 - 584
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB) | HTML iconHTML

    An automatic coefficient design method for synthesis of bandpass sigma-delta modulators (BPSDMs) is presented in this brief. Single-stage BPSDM structures, cascade-of-resonator with distributed feedback, cascade-of-resonator with distributed feedforward, and a new structure with lower coefficient spread, are all used to fit the synthesized coefficients. The automatic coefficient design method is r... View full abstract»

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  • An efficient locally pipelined FFT processor

    Publication Year: 2006, Page(s):585 - 589
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    The fast Fourier transform (FFT) is a very important algorithm in digital signal processing. The locally pipelined (LPPL) architecture is an efficient structure for FFT processor designing in a real-time embedded system. Two basic building blocks, to the LPPL FFT processor, the butterfly in pipeline, and address generating, are discussed in this brief. Based on the "deep" feedback to butterfly-2, ... View full abstract»

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  • Comments on "Robust stability and stabilizability of uncertain linear hybrid systems with state Delay"

    Publication Year: 2006, Page(s):590 - 591
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB) | HTML iconHTML

    This paper points out some technical errors of matrix dimension mismatch in the above paper, and presents the corrections in the form of Ricatti-like inequalities. View full abstract»

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  • Special issue on nanoelectronic circuits and nanoarchitectures

    Publication Year: 2006, Page(s): 592
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  • 2007 IEEE International Symposium on Circuits and Systems (ISCAS 2007)

    Publication Year: 2006, Page(s): 593
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  • IEEE Biomedical Circuits and Systems Conference healthcare technology (BioCAS 2006)

    Publication Year: 2006, Page(s): 594
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  • Have you visited lately? www.ieee.org [advertisement]

    Publication Year: 2006, Page(s): 595
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs Information for authors

    Publication Year: 2006, Page(s): 596
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  • IEEE Circuits and Systems Society Information

    Publication Year: 2006, Page(s): c3
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Aims & Scope

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

Chi K. Michael Tse
Dept. of Electronic and Information Engineering
Hong Kong Polytechnic University
Hunghom, Hong Kong
cktse@ieee.org