Digital event encoding for operating an event-based image sensor
US12063444B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2022 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Jan 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for operating an event-based image sensor comprising a plurality of pixel circuits arranged to form a pixel array, each pixel being arranged at a location defined by an address defined by pixel coordinates in the array, wherein each pixel circuit is configured to generate an event, such that each time a light intensity change is detected, an event is characterized by a polarity reflecting a direction of the change. The method comprises performing a line readout of groups of adjacent pixels of a line of pixels, wherein the line readout comprises generating, for each group, at least one packet expressing occurrences of events of a same polarity in said group, each packet being characterized by a polarity and a group address. The method further comprises sending the packets to a processing pipeline where the packets are successively processed, involving a memory access based on the group address, wherein two packets sharing the same group address have different polarities and are consecutively processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.