Image sensor and analog-to-digital converter
US11689831B2 · kind B2 · utility
0Cited by
7References
12Claims
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Key dates
| Filing date | May 24, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jul 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes: a pixel outputting a pixel signal; a ramp voltage generation circuit suitable for generating a ramp voltage that changes at a first slope in a first section and generating the ramp voltage that changes at a second slope having a greater absolute value than the first slope in a second section following the first section; an operation amplifier suitable for comparing the pixel signal with the ramp voltage during the first section and the second section; and a counter circuit suitable for generating a digital code corresponding to the pixel signal in response to an output of the operation amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.