Bolometer pixel-based thermally actuated trigger ROIC with self-heating compensation and calibration (barrier-SHC)
US12130185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2021 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | May 14, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/202
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A trigger sense circuit includes a pseudo-differential comparator circuit in signal communication with a pixel array. The pseudo-differential comparator circuit includes a first input in signal communication with a reference pixel group included in the pixel array to receive a pixel reference voltage, and a second input in signal communication with a target pixel group included in the pixel array to receive a pixel target voltage. The pseudo-differential comparator circuit is configured to selectively operate in a calibration mode to remove false trigger events and a comparison mode to detect at least one overheated pixel included in the target pixel group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.