Image sensors with hybrid analog-to-digital converter architecture
US11843889B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | May 13, 2022 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | May 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor may include an image sensor pixel array, row control circuitry, and column readout circuitry. The column readout circuitry may include analog-to-digital converter (ADC) circuitry. The ADC circuitry may have a first portion that selectively converts pixel signals associated with a low light or high conversion gain operating environment and a second portion that converts any pixel signals. As an example, the first portion may be a ramp ADC and the second portion may be a successive approximation register (SAR) ADC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.