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ADVANCES
IN CIRCUITS AND SYSTEMS 3, February 2005 A
quarterly news service of the IEEE Circuits and Systems Society Editor:
Martin Hasler VP Technical Activities CONTENTS 1. Nanoscale Devices and System Architecture for Biomedical Applications 2. High Content Image Analysis for Multidimensional Drug Profiling 4. Multiple-CNN (cellular neural networks) Integrated Neural System 5. A general Method to Predict the Amplitude of Oscillation in Nearly-Sinusoidal
Oscillators 7.
Event Driven Image Sensor Read-Out 8.
Scalable Video Coding: Part 13 of MPEG-21 Standard and Amendment
of the H.264/AVC Standard 9. Connected home
1. Nanoscale Devices and System Architecture for Biomedical Applications
Description by Jie Chen, Joe Mundy and Iris Bahar: It is expected that nanoscale system will confront devices and interconnections
with high inherent defect rates, which motivates the search for new
device paradigms. We proposed probabilistic-based design methodologies
for designing nanoscale devices and system
architecture based on Markov Random Fields (MRF). The MRF can express
arbitrary logic circuits and logic operation is achieved by maximizing
the probability of state configurations in the logic network. Communicated by the Technical Committee on Life-Science Systems and Applications 2. High Content Image Analysis for Multidimensional
Drug Profiling Description
by Stephen Wong: A new data-intensive method to describe
cell population responses to drugs or RNA interferences using automated
florescence microscopy. In the experiment, 93 descriptors for cell responses
were used that generated 600’000 images, leading to 1 billion data points
that are used to categorize drugs. This suggests a new approach in applying
signal processing algorithms and methods to study cellomics,
beyond genomics and proteomics. Communicated
by the Technical Committee on
Life-Science
Systems and Applications Description by Enrico Magli: Distributed video coding is a novel
compression paradigm that reverses the traditional complex encoder and
light decoder structure, allowing for a light encoder and a complex
decoder. This is useful in many applications, e.g. wireless, and is
obtained by applying distributed source coding to video sequences. Intraframe encoding also provides improved error resilience. Communicated by the Technical Committee on Multimedia Systems
and Applications 4. Multiple-CNN (cellular neural networks)
Integrated Neural System Description by Bing Sheu: A method for automatically constructing a set of CNN’s (cellular neural networks) working in parallel is proposed. It is realized as an integrated neural system in the form of a recurrent fuzzy neural network (RFCNN). It can automatically and simultaneously learn its proper network structure and its parameters (templates). Complex problems such as real-world defect detection problems can be solved by it. Communicated by the Technical Committee on Neural Systems and
Applications 5. A general Method to Predict the
Amplitude of Oscillation in Nearly-Sinusoidal Oscillators Description by Gian Mario Maggio: A
general methodology for predicting the amplitude of oscillation in nearly-sinusoidal
oscillators is presented. The method relies on the projection technique
for the computation of the center manifold, and on the Hopf
normal form theory to approximate the corresponding limit cycle in state
space. This allows deriving a closed-form expression for the amplitude
of oscillation, as a function of the system parameters. Communicated by the Technical Committee on Nonlinear Circuits
and Systems Description by Sheng-Fu Liang: A light-sensitive CMOS chip was developed for measuring biochemical reactions. A light producing enzymatic reaction was designed to determine the concentration of hydrogen peroxide. Results were confirmed by measurements by a standard sophisticated fluorometer of a biochemical laboratory. The result points to an important application of the CMOS chip in biological measurements and in diagnosis of various health factors. Communicated
by the Technical Committee on
Nanoelectronics and Giga-scale Systems 7. Event Driven Image Sensor Read-Out Description by Philipp Hafliger: A number of recent publications explore a bio-inspired event-based communication protocol to convey image data from imager chips: Instead of clock driven sequential scanning through the image frame and sampling of analog pixel-values (as is most common today), pixels create events (as retinal ganglion cells in the eye send voltage pulse-events) on an asynchronous digital bus by sending their coordinates. The pixel illuminations can be encoded in different ways: by message frequency (2,5), by event delay (3), using temporal differentiation (1,4) or change detection (5). References: 1. J. Kramer, "An On/Off Transient
Imager with Event-Driven, Asynchronous Read-Out", IEEE International
Symposium on Circuits and Systems 2002, 4. P. Lichtensteiner, T. Delbrück and
J. Kramer, "Improved On/Off Temporally Differentiating Address-Event
Imager", Proc. of the IEEE International Conference on Electronics,
Circuits and Systems 2004, Tel-Aviv, Israel, (sorry, no link on Xplore,
yet) 5. M. Azadmehr, J. Abrahamsen and P. Häfliger, "A Foveated AER Imager
Chip", Proc. of the IEEE International Conference on Electronics 2005,
Kobe, Japan, to appear Communicated by the Technical Committee on Neural Systems and
Applications 8. Scalable Video Coding: Part 13 of MPEG-21 Standard
and Amendment of the H.264/AVC Standard Description by Tihao Chiang: To support clients with diverse capabilities in complexity, bandwidth, power and display resolution, the MPEG committee is defining a novel scalable video coding (SVC) framework that can simultaneously support multiple spatial, temporal and SNR resolutions under the constraints of low complexity and low delay. SVC is based on the newly adopted H.264/AVC video standard and motion compensated temporal filtering (MCTF) technology. Communicated
by the Technical Committee on
Visual Signal Processing and Communications. Description by Magdy Bayoumi: Connectivity has become the driving
force in our life; work, home, and leisure. This connectivity should
be anywhere....anytime. One of the emphases in a connected home is the
reliability of connectivity. Several technologies have been developed
for fault diagnosis and fault tolerance in the connected home. Communicated by the Technical Committee on Circuits and Systems
for communications. |
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