Event driven pixel for spatial information extraction
US11430828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Mar 1, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An event driven sensor includes an arrangement of photodiodes including an inner portion laterally surrounded by an outer portion. An outer pixel cell circuit is coupled to generate an outer pixel value in response to photocurrent generated by the outer portion. The outer pixel value is a binned signal representative of an average value of brightness of incident light on the arrangement of photodiodes. An inner pixel cell circuit is coupled to the inner portion to generate an inner pixel value in response to photocurrent generated by from the inner portion. An event driven circuit is coupled to the outer pixel cell circuit and the inner pixel cell circuit. The event driven circuit is coupled to generate an output signal responsive to an inner brightness indicated by the inner pixel value relative to an outer brightness indicated by the outer pixel value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.