Sample and hold based temporal contrast vision sensor
US10469776B2 · kind B2 · utility
4Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Apr 4, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Apr 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to a pixel circuit comprising a photo-sensor stage comprising a photodiode delivering a photoreceptor current, a comparison stage configured for detecting a change in a signal voltage derived from said photoreceptor current, a sample-and-hold circuit connected to the converting stage and to the comparison stage, said comparison stage configured to output an input signal for the sample-and-hold circuit, and for emitting a sampling signal to a control terminal of the sample-and-hold circuit when a change is detected in the signal voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.