Dynamic vision sensor device including buffer
US11153517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/411
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dynamic vision sensor device includes a photo detector that outputs a detection signal based on light incident from outside, a log amplifier that receives the detection signal from the photo detector through a first node, amplifies the received detection signal, and outputs the amplified detection signal to a second node, a differencing amplifier that outputs a difference signal based on a change in an intensity of the amplified detection signal, and an event determination circuit that determines an event based on the difference signal. The log amplifier includes a first buffer connected between the first node and a third node, an amplifier connected between the third node and the second node, and a feedback circuit connected between the second node and the first node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.