Teledyne Scientific and Imaging, LLC

Teledyne Licensing, LLC

David J Chiaverini

Atul Joshi

William E Tennant

Selim Eminoglu

Vincent Douence

John C Stevens

Angelika Kononenko

Gananath Wijeratne

Embodiments of a read-out integrated circuit (ROIC) include a plurality of unit cells. Each unit cell includes a bias subsystem, a reset switch, at least one integration capacitor, and at least one read switch. A focal plane array includes a plurality of photo detectors disposed in a grid and a ROIC. A column buffer includes a first buffer subsystem, a feedback subsystem, a first and second correlated double sampling subsystem, and a second buffer subsystem. A ROIC includes at least one integration subsystem having a transistor subsection, a poly silicon layer, and a plurality of active layer sections.

Multi-color read-out integrated circuit

An imaging system implementing a scheme for enhancing the dynamic range of the device. An array of radiation detecting pixels produces an output in response to a stimulus. The signal from each pixel is read once for evaluation. If the voltage at an individual pixel satisfies a programmed condition, such as exceeding a predetermined threshold voltage at a particular time, that pixel is reset and begins producing an output signal anew. If the pixel output signal does not satisfy the condition, it is allowed to continue producing the signal without being reset. After the evaluation read, all of the pixels are then read row by row into a buffer and digitally processed. A memory register tracks which pixels have been reset, and the corresponding output signals are adjusted accordingly. This scheme allows the system to process input signals across a broader range of intensity without losing information due to pixel saturation or sacrificing sensitivity.

Dynamic range enhancement scheme for imagers

Growing community of inventors

Irvine, CA, United States of America

David J Chiaverini