Image sensor, image device having the same, and operating method thereof
US11924572B2 · kind B2 · utility
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7Claims
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Assignee
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Key dates
| Filing date | Mar 11, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Mar 17, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a first amplifier comparing and amplifying a first voltage signal received from a first column line, and a ramp signal; a second amplifier amplifying an output of the first amplifier; a third amplifier comparing and amplifying a second voltage signal received from a second column line, and the ramp signal; and a fourth amplifier amplifying an output of the third amplifier, wherein the second amplifier and the fourth amplifier output a decision signal at different points in time by dummy switch control split.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.