Image sensor, image processing system including the same, and operating method of the same
US11528439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Sep 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a dual conversion gain pixel to output a high conversion gain signal according to a high conversion gain and output a low conversion gain signal according to a low conversion gain, by adjusting a conversion gain; a scaler to scale a voltage level of the high conversion gain signal; a ramp generator to generate a first ramp signal and a second ramp signal, slopes of the first and second ramp signals being different from each other; a comparator to compare the scaled high conversion gain signal and the first ramp signal to output a first comparison result, and compare the low conversion gain signal and the second ramp signal to output a second comparison result; and a counter to output a first counting result value based on the first comparison result and output a second counting result value based on the second comparison result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.