Dynamic vision sensor with in-pixel digital change detection
US11812169B2 · kind B2 · utility
2Cited by
1References
18Claims
0Family size
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Key dates
| Filing date | May 8, 2020 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Aug 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dynamic vision sensor such as an event based vision sensor employs analog to digital converters (ADC), such as ramp ADCs, that analog to digital converts the signals from photoreceptors. Current and previous light values are then stored and compared digitally. In addition, log compression can be implemented by increasing the count linearly while increasing the reference voltage exponentially, or increasing the count logarithmically while increasing the reference voltage linearly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.