Vision sensor and image processing device including the same
US11765486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2021 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Apr 15, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vision sensor including a plurality of pixels configured to sense intensity of incident light, and to output request signals representing an occurrence status of an event; and an event detection circuit configured to generate event data including information about a pixel at which the event occurs, based on the request signals, wherein each pixel of the plurality of pixels includes: a photoelectric conversion device configured to generate a current corresponding to the incident light; a current-to-voltage converter configured to generate a voltage corresponding to the current; an amplifier configured to amplify a variation amount of the generated voltage to generate an output voltage; an event storage configured to generate an event signal corresponding to a comparison between the output voltage and a threshold voltage, and to hold the event signal using cross-coupled transistors; and an output logic configured to output a request signal based on the event signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.