Solid-state imaging element, imaging device, and method for controlling solid-state imaging element
US11310450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Apr 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/123
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a solid-state imaging element in which an ADC is disposed, deterioration of conversion accuracy of the ADC caused by a dark current is inhibited. A signal voltage sample-and-hold circuit samples and holds, as a sample signal voltage, a voltage obtained by dividing a difference between a voltage of a vertical signal line corresponding to a light reception amount in a pixel and a predetermined variable reference voltage. An analog-to-digital converter converts an analog signal corresponding to the sample signal voltage to a digital signal. A reference voltage control section performs control to modulate a value of the variable reference voltage according to a dark current amount in the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.