Active-pixel sensor - Wikipedia
An active-pixel sensor (APS) is an image sensor, which was invented by Peter J.W. Noble in 1968, where each pixel sensor unit cell has a photodetector (typically a pinned photodiode) and one or more active transistors.
CMOS Active Pixel Sensors (APS). Everything you need to know
Dec 1, 2023 · This page is focused on the most common implementation of a radiation sensor in CMOS technologies the Active Pixel Sensor. The sensing element of Active Pixel Sensors. The main element of Active Pixel Sensors is an inverse-biased photodiode (see Figure 1 …
Re-invented in the early ‘90s on both sides of the Atlantic, Monolithic Active Pixel Sensors (MAPS) in a CMOS technology are today the most sold solid-state imaging device, overtaking the traditional technology of Charge-Coupled Devices (CCD).
CMOS Active Pixel Image Sensor • Invented at NASA/JPL 1992 (patents owned by Caltech) • Used vanilla CMOS process available at many foundries • Single-stage “CCD” in each pixel to allow complete charge transfer • In-pixel source-follower amplifier for charge gain • Allows low noise CDS operation • In-column FPN reduction
The Heart of a Phone Camera: The CMOS Active Pixel Image Sensor
With CMOS transistors as amplifiers, active pixel sensors perform better in obtaining high-quality images. A CMOS active pixel image sensor consists of many pixels, and in phone camera case, each pixel is covered by red, green and blue light filters (Fig. 1).
High-Voltage CMOS Active Pixel Sensor - IEEE Xplore
Mar 9, 2021 · The high-voltage CMOS (HVCMOS) sensors are a novel type of CMOS active pixel sensors for ionizing particles that can be implemented in CMOS processes with deep n-well option. The pixel contains one sensor electrode formed with a …
The Principle and Design of CMOS Active Pixel Sensor
Feb 12, 2023 · In this paper, the working principle of the 3-T active pixel sensor and its current applications are introduced, and the architecture and working mode of APS itself are also highlighted.
Dec 8, 1994 · This paper describes the integration of the active pixel sensor (APS) architecture normally fabricated in conventional complementary metal oxide semiconductor (CMOS) technology with a pinned photodiode (PPD)
A five-transistor active pixel sensor with a wide dynamic range …
This work presents a novel active pixel sensor design intended for imaging applications that require a wide dynamic range and a fast pixel operation. Different from a conventional 4-transistor active pixel sensor (4-T APS), it adds a photodiode-body-biased MOSFET (PD-MOS) as a photo-induced current source which yields a wide dynamic range of ...
Active pixel sensor design | CMOS imagers - ACM Digital Library
Jan 1, 2004 · Since active pixel sensors (APS) are fabricated in a commonly used CMOS process, image sensors with integrated "intelligence" can be designed. These sensors are very useful in many scientific, commercial and consumer applications.
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