Image sensor with charge pump cell quantity control
US11659297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2020 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Oct 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a plurality of image sensor cells, each configured to generate or not generate an image signal in response to one or more control signals, and a first driver generating a first control signal. The first driver includes a first positive supply terminal connected to a first power supply node. The image sensor also includes a voltage generator generating a first voltage at the first power supply node, where the voltage generator includes a plurality of charge pump cells selectably sourcing charge to the first power supply node in response to one of multiple enable signals, and a charge pump cell quantity controller circuit generating the enable signals. Each enable signal is either in an active or inactive state, and each charge pump cell sources charge to the first power supply node in response to receiving an enable signal in an active state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.