Analog-to-digital converting circuit using output signal feedback and operation method thereof
US11616926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2022 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Jan 6, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1295
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a circuit which includes a first amplifier that generates a first output signal by comparing a ramp signal and a reset signal of a pixel signal output from a pixel array in a first operating period and comparing the ramp signal and an image signal of the pixel signal output from the pixel array in a second operating period, a second amplifier that generates a second output signal based on the first output signal, and a counter. During at least one operating period of the first operating period and the second operating period, the first output signal controls a first source current of the first amplifier, or the second output signal controls at least one of the first source current of the first amplifier and a second source current of the second amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.