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Mostrando ítems 1-8 de 8
Artículo
A spatial contrast retina with on-chip calibration for neuromorphic spike-based AER vision systems
(Institute of Electrical and Electronics Engineers, 2007)
We present a 32 32 pixels contrast retina microchip that provides its output as an address event representation (AER) stream. Spatial contrast is computed as the ratio between pixel photocurrent and a local average between ...
Artículo
The stochastic I-Pot: A circuit block for programming bias currents
(Institute of Electrical and Electronics Engineers, 2007)
In this brief, we present the “Stochastic I-Pot.” It is a circuit element that allows for digitally programming a precise bias current ranging over many decades, from pico-amperes up to hundreds of micro-amperes. I-Pot ...
Artículo
Novel topologies of cascade ΣΔ modulators for low-voltage wideband applications
(2007)
This work presents two novel topologies of cascade ΣΔ modulators with unity signal transfer function that avoid the need of digital filtering in the error cancellation logic. The combination ...
Artículo
Performance evaluation and limitations of a vision system on a reconfigurable/programmable chip
(Technische Universität Graz, 2007)
This paper presents a survey of the characteristics of a vision system implemented in a reconfigurable/programmable chip (FPGA). System limitations and performance have been evaluated in order to derive specifications ...
Artículo
Effects of buffer insertion on the average/peak power ratio in CMOS VLSI digital circuits
(Society of Photo-optical Instrumentation Engineers, 2007)
The buffer insertion has been a mechanism widely used to increase the performances of advanced VLSI digital circuits and systems. The driver or repeater used to this purpose has effect on the timing characteristics on the ...
Artículo
Local picture-repetition mode detector for video de-interlacing
(Institute of Electrical and Electronics Engineers, 2007)
The de-interlacing of video material converted from film can be perfect, provided it is possible to recognize the field-pairs that originate from the same film image. Various so-called film-detectors have been proposed for ...
Artículo
Cascade ΣΔ modulator for low-voltage wideband applications
(Institute of Electrical and Electronics Engineers, 2007)
A new cascade ΣΔ modulator architecture with unity signal transfer function is presented, which avoids the need for digital filtering in the error cancellation logic. The combination of these two aspects makes it highly ...
Artículo
On an Efficient CAD implementation of the distance term in pelgrom's mismatch model
(Institute of Electrical and Electronics Engineers (IEEE), 2007)
In 1989, Pelgrom et al. published a mismatch model for MOS transistors, where the variation of parameter mismatch between two identical transistors is given by two independent terms: a size-dependent term and a ...