Analog-to-digital converting circuits for dual conversion gain operation and operation methods of the same
US12289557B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2023 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Dec 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/709
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an amplifier circuit including a first input terminal that receives a ramp signal, a second input terminal that receives a pixel signal, an output terminal that outputs an output signal, wherein the output signal is based on comparing the pixel signal and the ramp signal, a capacitor that is electrically connected between the output terminal and a ground terminal, a switch that is electrically connected with the capacitor, and a current source that outputs a power current. The pixel signal corresponds to a first conversion gain or a second conversion gain, and a value of the second conversion gain is higher than a value of the first conversion gain, and a bandwidth of the amplifier circuit is adjusted depending on whether the pixel signal corresponds to the first conversion gain or the second conversion gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.