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The focus of this paper is to design an intelligent readout integrated circuit (iROIC) with built-in programmable analog blocks, capable of performing basic spatio-temporal image-processing and image-recognition operations utilizing temporal and spatial tunable bias unit cells.
Photogate based active pixel sensors (PG APS) are often used in CMOS imaging. In advanced applications (e.g. high-speed imaging or time-of-flight distance measurements) the pixel performance requirements are high, especially as far as the optical sensitivity of the PG and the transfer and readout speed of photogenerated charge carriers are concerned. In this contribution we investigate the electrical...
A 0.35 mum CMOS process has been used for on-chip integration of a sun sensor composed of a 2times2 photodiode array and a current-to-voltage amplifier. Unlike conventional sun sensors, a shade profile proportional to the angle of incidence of incoming light is projected onto the photodiodes. This concept enables an autonomous self-powered optical system with two the main functions (electrical power...
An intensity modulated fiber-optic position sensor, based on a fiber to bundle coupling and a readout system using a CMOS image camera together with fast routines for position extraction and calibration, is experimentally demonstrated. Further, a simulation of the complete sensor system setup is made, and possible sources of error are analyzed experimentally. Our analysis indicates the theoretical...
This paper describes the design, fabrication and characterization of CMOS optical sensors for cancer detection based on autofluorescence emission spectra. These optical sensors were fabricated for being an integrated part of an endoscopic capsule used in diagnosis of gastrointestinal diseases. Cells and tissues show autofluorescence, in a part of the visible spectrum, when excited by ultraviolet or...
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