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Mostrando ítems 1-10 de 12
Artículo
A Low-Latency, Low-Power CMOS Sun Sensor for Attitude Calculation Using Photovoltaic Regime and On-Chip Centroid Computation
(Institute of Electrical and Electronics Engineers, 2023)
The demand for sun sensors has skyrocketed in the last years due to the huge expected deployment of satellites associated with the New Space concept. Sun sensors compute the position of the sun relative to the observer and ...
Artículo
A 1000 FPS at 128×128 vision processor with 8-bit digitized I/O
(Institute of Electrical and Electronics Engineers, 2004)
This paper presents a mixed-signal programmable chip for high-speed vision applications. It consists of an array of processing elements, arranged to operate in accordance with the principles of single instruction multiple ...
Artículo
A Mobile Platform for Movement Tracking Based on a Fast-Execution-Time Optical-Flow Algorithm
(Institute of Electrical and Electronics Engineers, 2022)
A multi-purpose mechanical platform to track moving objects in three-dimensional space has been developed. It is composed of one main microcontroller board that processes all system data, two cameras, three motors, and one ...
Artículo
Log-domain implementation of complex dynamics reaction-diffusion neural networks
(Institute of Electrical and Electronics Engineers, 2003)
In this paper, we have identified a second-order reaction-diffusion differential equation able to reproduce through parameter setting different complex spatio-temporal behaviors. We have designed a log-domain hardware that ...
Ponencia
Form Factor Improvement of Smart-Pixels for Vision Sensors through 3-D Vertically- Integrated Technologies
(Institute of Electrical and Electronics Engineers, 2014)
While conventional CMOS active pixel sensors embed only the circuitry required for photo-detection, pixel addressing and voltage buffering, smart pixels incorporate also circuitry for data processing, data storage and ...
Artículo
Very wide range tunable CMOS/bipolar current mirrors with voltage clamped input
(Institute of Electrical and Electronics Engineers, 1999)
In low power current mode signal processing circuits it is often necessary to use current mirrors to replicate and amplify/attenuate current signals and clamp the voltage of nodes with high parasitic capacitances so that ...
Artículo
Smart imaging for power-efficient extraction of Viola-Jones local descriptors
(Society of Photo-Optical Instrumentation Engineers, 2014)
In computer vision, local descriptors permit to summarize relevant visual cues through feature vectors. These vectors constitute inputs for trained classifiers which in turn enable different high-level vision tasks. While ...
Artículo
System-Level Design of a 64-Channel Low Power Neural Spike Recording Sensor
(Institute of Electrical and Electronics Engineers, 2017)
This paper reports an integrated 64-channel neural spike recording sensor, together with all the circuitry to process and configure the channels, process the neural data, transmit via a wireless link the information and ...
Artículo
A general translinear principle for subthreshold MOS transistors
(Institute of Electrical and Electronics Engineers, 1999)
This paper revises the conditions under which the translinear principle can be fully exploited for MOS transistors operating in subthreshold. Due to the exponential nature of subthreshold MOS transistors, the translinear ...
Artículo
A 151 dB high dynamic range CMOS image sensor chip architecture with tone mapping compression embedded in-pixel
(Institute of Electrical and Electronics Engineers, 2015)
This paper presents a high dynamic range CMOS image sensor that implements an in-pixel content-aware adaptive global tone mapping algorithm during image capture operation. The histogram of the previous frame of an auxiliary ...