Analog-to-digital converting circuit for optimizing dual conversion gain operation and operation method thereof
US12063447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2022 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Feb 14, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/772
- 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 first pixel signal corresponding to a first conversion gain and a first ramp signal and generates a second output signal by comparing a second pixel signal corresponding to a second conversion gain and a second ramp signal, and a second amplifier that generates a third output signal based on the first output signal and generates a fourth output signal based on the second output signal, the first conversion gain is higher than the second conversion gain, and a first power current of the first amplifier when the first pixel signal and the first ramp signal are compared is different from a second power current of the first amplifier when the second pixel signal and the second ramp signal are compared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.