Event-based computational pixel imagers
US11863876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Feb 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/197
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computational pixel imaging device that includes an array of pixel integrated circuits for event-based detection and imaging. Each pixel may include a digital counter that accumulates a digital number, which indicates whether a change is detected by the pixel. The counter may count in one direction for a portion of an exposure and count in an opposite direction for another portion of the exposure. The imaging device may be configured to collect and transmit key frames at a lower rate, and collect and transmit delta or event frames at a higher rate. The key frames may include a full image of a scene, captured by the pixel array. The delta frames may include sparse data, captured by pixels that have detected meaningful changes in received light intensity. High speed, low transmission bandwidth motion image video can be reconstructed using the key frames and the delta frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.