Image sensor, image readout method for readout conversion circuit and electronic device
US11871136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2022 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Apr 28, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/771
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an image sensor, an image readout method, and an electronic device. The image sensor comprises: a pixel array and a plurality of readout conversion circuits, the readout conversion circuit comprises: a comparison circuit for comparing an output signal of the column pixel with a ramp signal to obtain a first output signal and a second output signal; a selection module for selecting the first output signal during a first sampling count, and selecting the second output signal during a second sampling count; a counter for counting according to the first output signal and the second output signal to obtain total quantization value of the first sampling count and the second sampling count, so as to obtain actual signal quantization result according to the total quantization value. The image readout speed of the image sensor is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.