Patent · US Active

Bolometer pixel-based thermally actuated trigger ROIC with self-heating compensation and calibration (barrier-SHC)

US12130185B2 · kind B2 · utility

0Cited by
3References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 19, 2021
Grant dateOct 29, 2024
Priority date
Expiry dateMay 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.