Vision sensor, image processing device including the vision sensor, and operating method of the vision sensor
US11532143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2020 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Oct 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vision sensor includes a pixel array comprising pixels arranged in a matrix, an event detection circuit, an event rate controller, and an interface circuit. Each pixel is configured to generate an electrical signal in response to detecting a change in incident light intensity. The event detection circuit detects whether a change in incident light intensity has occurred at any pixels, based on processing electrical signals received from one or more pixels, and generates one or more event signals corresponding to one or more pixels at which a change in intensity of incident light is determined to have occurred. The event rate controller selects a selection of one or more event signals corresponding to a region of interest on the pixel array as one or more output event signals. The interface circuit communicates with an external processor to transmit the one or more output event signals to the external processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.