Journal ArticleDOI
A 256/spl times/256 CMOS imaging array with wide dynamic range pixels and column-parallel digital output
S.J. Decker,D. McGrath,K. Brehmer,Charles G. Sodini +3 more
- Vol. 33, Iss: 12, pp 2081-2091
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TLDR
A 256x256 CMOS active pixel sensor (APS) is described for an automotive stereo-vision system that simultaneously provides flexibility, user-adjustability, and digital control, with no reduction of fill factor.Abstract:
A 256x256 CMOS active pixel sensor (APS) is described for an automotive stereo-vision system. Illumination may vary over several orders of magnitude, requiring a high dynamic range imager. Dynamic range is increased 20/spl times/ using a special clocking scheme for the lateral overflow gate. This dynamic range enhancement offers improvements over previously-described techniques. It simultaneously provides flexibility, user-adjustability, and digital control, with no reduction of fill factor. On-chip column-parallel cyclic analog-to-digital converters (ADCs) produce digital output at frame rates from 30 to 390 frames/s.read more
Citations
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Sensitivity Controllable CMOS Image Sensor Pixel Using Control Gate
TL;DR: In this paper, a new sensitivity controllable pixel structure was proposed for CMOS active-pixel image sensor, which has a sensitivity control gate overlaid on the photodiode.
Simplified wide dynamic range CMOS image sensor with 3t APS reset-drain actuation
TL;DR: In this paper, a maneira simples e inovadora de aumentar o alcance dinâmico da mais basica e popular arquitetura de sensor de pixel atualmente usada in tecnologias CMOS is proposed.
Patent
Method and device for triangulation-based distance measurement
TL;DR: In this paper, a triangulation method for determining distances to an object to be measured using a high dynamic range image sensor was proposed, in particular with a piecewise-linear multi-slope sensitivity characteristic.
Proceedings ArticleDOI
A Digital High Dynamic Range CMOS Image Sensor with Multi- Integration and Pixel Readout Request
TL;DR: A novel principle has been developed to build an ultra wide dynamic range digital CMOS image sensor that allows a direct capture of the final image from the different exposure time with no need of external reconstruction.
Book ChapterDOI
CMOS Sensors for Optical Molecular Imaging
TL;DR: These techniques are expected to have a revolutionary impact on medicine, environmental testing, agriculture, and biodefense, especially through the development of drug discovery and gene expression techniques.
References
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TL;DR: In this article, the requirements for CMOS image sensors and their historical development, CMOS devices and circuits for pixels, analog signal chain, and on-chip analog-to-digital conversion are reviewed and discussed.
Journal ArticleDOI
A ratio-independent algorithmic analog-to-digital conversion technique
TL;DR: An algorithmic analog-to-digital conversion technique is described which is capable of achieving high-resolution conversion without the use of matched capacitors in an MOS technology.
Book
Charge Transfer Devices
TL;DR: It is projected that charge transfer devices will rapidly find their way into certain analog delay, image sensing, and digital applications.
Journal ArticleDOI
256/spl times/256 CMOS active pixel sensor camera-on-a-chip
TL;DR: In this paper, an active pixel sensor (APS) is integrated on a CMOS chip with the timing and control circuits, and signal conditioning to enable random access, low power (/spl sim/5 mW) operation, and low read noise (13 e/sup -/ rms).