Event-based sensor, user device including the same, and operation method of the same
US11122224B2 · kind B2 · utility
9Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2020 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Apr 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/573
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An event-based sensor includes a dummy pixel that generates a dark current, a current mirror that generates a mirrored current using the dark current, and a sensing pixel that generates a sense current based on an intensity of incident light, and outputs an activation signal, indicating whether a variation in the incident light is sensed, based on a light current that is obtained by subtracting the mirrored current from the sense current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.