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Mostrando ítems 1-10 de 109
Artículo
Compensation of PVT Variations in ToF Imagers with In-Pixel TDC
(MDPI, 2017)
The design of a direct time-of-flight complementary metal-oxide-semiconductor (CMOS) image sensor (dToF-CIS) based on a single-photon avalanche-diode (SPAD) array with an in-pixel time-to-digital converter (TDC) must ...
Artículo
A Wide Linear Dynamic Range Image Sensor Based on Asynchronous Self-Reset and Tagging of Saturation Events
(Institute of Electrical and Electronics Engineers, 2017)
We report a high dynamic range (HDR) image sensor with a linear response that overcomes some of the limitations of sensors with pixels with self-reset operation. It operates similar to an active pixel sensor, but its pixels ...
Artículo
New analogue switch circuit having very low forward resistance
(Institution of Engineering and Technology, 1984)
A new circuit realisation for an analogue switch is reported. The main feature of the proposed design is the low value of the forward resistance as compared with commercial switches. Experimental data confirming the ...
Artículo
A Customizable Thermographic Imaging System for Medical Image Acquisition and Processing
(Institute of Electrical and Electronics Engineers, 2022)
A custom system has been developed for medical image acquisition and processing in both the visible and the infrared (IR) bands. Unlike some non-customizable commercial devices, this system can easily be adapted to different ...
Artículo
A CMOS Digital SiPM With Focal-Plane Light-Spot Statistics for DOI Computation
(Institute of Electrical and Electronics Engineers, 2017)
Silicon photomultipliers can be used to infer the depth-of-interaction (DOI) in scintillator crystals. DOI can help to improve the quality of the positron emission tomography images affected by the parallax error. This ...
Artículo
Ultralow-power processing array for image enhancement and edge detection
(Institute of Electrical and Electronics Engineers, 2012)
This paper presents a massively parallel processing array designed for the 0.13-μm 1.5-V standard CMOS base process of a commercial 3-D through-silicon via stack. The array, which will constitute one of the fundamental ...
Artículo
Using Building Blocks to Design Analog Neuro-Fuzzy Controllers
(Institute of Electrical and Electronics Engineers, 1995)
We present a parallel architecture for fuzzy controllers and a methodology for their realization as analog CMOS chips for low- and medium-precision applications. These chips can be made to learn through the adaptation of ...
Artículo
Single-Exposure HDR Technique Based on Tunable Balance Between Local and Global Adaptation
(Institute of Electrical and Electronics Engineers, 2016)
This brief describes a high-dynamic-range technique that compresses wide ranges of illuminations into the available signal range with a single exposure. An online analysis of the image histogram provides the sensor with ...
Artículo
Insect-vision inspired collision warning vision processor for automobiles
(Institute of Electrical and Electronics Engineers, 2008)
Vision is expected to play important roles for car safety enhancement. Imaging systems can be used to enlarging the vision field of the driver. For instance capturing and displaying views of hidden areas around the car ...
Artículo
On the Design of Voltage-Controlled Sinusoidal Oscillators Using OTA's
(Institute of Electrical and Electronics Engineers, 1990)
A unified systematic approach to the design of voltage-controlled oscillators using only operational transconductance amplifiers (OTA's) and capacitors is discussed in this paper. Two classical oscillator models, i.e., ...