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Mostrando ítems 121-130 de 153
Artículo
Compact CMOS active quenching/recharge circuit for SPAD arrays
(Wiley-Blackwell, 2016)
Avalanche diodes operating in Geiger mode are able to detect single photon events. They can be employed to photon counting and time-of-flight estimation. In order to ensure proper operation of these devices, the avalanche ...
Artículo
An ultralow-power mixed-signal back end for passive sensor UHF RFID transponders
(Institute of Electrical and Electronics Engineers, 2012)
This paper describes the design of mixed-signal back end for an ultrahigh-frequency sensor-enabled radio-frequency identification transponder in full compliance with the Electronic Product Code Class-1 Generation-2 protocol, ...
Ponencia
On the calibration of a SPAD-based 3D imager with in-pixel TDC using a time-gated technique
(Institute of Electrical and Electronics Engineers, 2015)
The optical characterization of a CMOS 64×64 single-photon avalanche-diode (SPAD) array with in-pixel 11b time-to-digital converter (TDC) is presented. The overall full-width half-maximum (FWHM) of the detector ensemble ...
Ponencia
Image filtering by reduced kernels exploiting kernel structure and focal-plane averaging
(Institute of Electrical and Electronics Engineers, 2011)
Incorporating multi-resolution capabilities into imagers renders additional power saving mechanisms in the subsequent image processing. In this paper, we show how, by exploiting a certain mask structure, 3 × 3 kernels can ...
Ponencia
Pipeline AER arbitration with event aging
(Institute of Electrical and Electronics Engineers, 2017)
We present a simple circuit to handle communication between cells of neuromorphic arrays. It allows cells to operate continuously without waiting for acknowledgement signals back from the AER (Address Event Representation) ...
Artículo
Enhanced Sensitivity of CMOS Image Sensors by Stacked Diodes
(Institute of Electrical and Electronics Engineers, 2016)
We have investigated and compared the performance of photodiodes built with stacked p/n junctions operating in parallel versus conventional ones made with single p/n junctions. We propose a method to characterize and compare ...
Artículo
CMOS Vision Sensors: Embedding Computer Vision at Imaging Front-Ends
(IEEE, 2018)
CMOS Image Sensors (CIS) are key for imaging technol-ogies. These chips are conceived for capturing opticalscenes focused on their surface, and for delivering elec-trical images, commonly in digital format. CISs may ...
Ponencia
Effects of capacitors non-idealities in un-even split-capacitor array SAR ADCs
(Institute of Electrical and Electronics Engineers, 2016)
This paper studies the effects of capacitors non-idealities in the performance of un-even split-capacitor SAR ADCs. Also, election of the m and l bits of MSB and LSB capacitors banks, respectively, is studied to reduce ...
Ponencia
In vivo measurements with a 64-channel extracellular neural recording integrated circuit
(Institute of Electrical and Electronics Engineers, 2014)
This paper presents in vivo measurements obtained from an implantable 64-channel neural recording Application Specific Integrated Circuit (ASIC) developed at IMSE and gives details of the computer interface used for real-time ...
Ponencia
A 2.2 μW analog front-end for multichannel neural recording
(Institute of Electrical and Electronics Engineers, 2017)
In this paper an analog front-end for the multi-channel implantable recording of neural signals is presented. It is comprised by a two-stage AC-coupled low-noise amplifier (LNA) and a one stage AC-coupled variable gain ...