Global shutter pixel circuit and method for computer vision applications
US11444109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/813
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor device includes a plurality of pixel cells arranged in a pixel array, a control circuit for controlling an exposure phase and a sampling phase of the image sensor device. Each of the plurality of pixel cells includes a photodiode, a storage diode, and a floating diffusion region. The control circuit is configured to activate the photodiode in a plurality of time windows to sense light reflected from a target as a result of a corresponding plurality of emitted light pulses, with a pre-determined delay time between each time window and a corresponding emitted light pulse. The photodiode can be activated using a plurality of bias voltage pulses or a plurality of global shutter signal pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.