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In this paper, a novel image sensor architecture based on a clock-less readout is presented. The proposed proof-of-concept consists of only 12x6 pixels and validates the new readout scheme designed for low power application, which is particularly suitable for embedding energy harvesting circuit even though not included into the design. Thanks to the clock-less serial readout with embedded PWM interface,...
A quantum random generator based on photon detection is here presented. The system consists of a source of photons, typically a commercial LED, coupled with a detector with single photon detection capability. The detector in this case is represented by a single pixel consisting of a SPAD and a time stamp circuit, which samples the arrival time of impinging photons within a predefined temporal window...
Background light can be a critical issue in a Time of Flight (ToF) camera system, because it can saturate the pixel destroying the depth information held on it. In this paper a new circuit aimed at increasing the dynamic range of a ToF sensor, based on photodemodulators, is proposed. The used approach consists of a compact low-power pixel-level circuit able to suppress the background light contribution...
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