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Sample and hold based temporal contrast vision sensor

AuthorsFinateu, Thomas; Linares-Barranco, Bernabé ; Serrano-Gotarredona, Teresa ; Posch, Christoph
Issue Date12-Oct-2017
CitationWO2017174579 A1
AbstractThis invention relates to a pixel circuit comprising a photo-sensor stage (10) comprising a photodiode (1) delivering a photoreceptor current (Iph), a comparison stage (30) configured for detecting a change in a signal voltage (Vph) derived from said photoreceptor current, a sample-and-hold circuit (50) connected to the converting stage (20) and to the comparison stage (30), said comparison stage (30) configured to output an input signal for the sample- and-hold circuit (50), and for emitting a sampling signal to a control terminal of the sample-and-hold circuit (50) when a change is detected in the signal voltage (Vph).
Appears in Collections:(IMSE-CNM) Patentes
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