A 128-pixel CMOS image sensor with integrated analog nonvolatile memory

Author

Aslam-Siddiqi, Amer ; Brockherde, Werner ; Schanz, Michael ; Hosticka, Bedrich J.

Author_Institution

Fraunhofer Inst. of Microelectron Circuits & Syst., Duisburg, Germany

Volume

33

Issue

10

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

1497

Lastpage

1501

Abstract

A 128-pixel complementary metal-oxide-semiconductor (CMOS) image sensor array with analog nonvolatile storage for each pixel has been realized in a 1.5-μm single-poly standard CMOS/EEPROM technology and successfully tested. The integrated nonvolatile memory allows an offset correction for each sensor element, cancellation of the fixed pattern noise, and compensation of the background illumination. The sensor array can also learn a presented pattern and store it in its analog nonvolatile memory just by “seeing”. The stored pattern can be read out directly or, in combination with the optical input, it can be used for pattern recognition or motion detection. The required programming circuitry for the analog memory has been integrated on the same chip

Keywords

CMOS analogue integrated circuits; analogue storage; compensation; image sensors; integrated circuit noise; 1.5 micron; 128 pixel; CMOS image sensor; background illumination compensation; fixed pattern noise cancellation; integrated analog nonvolatile memory; motion detection; offset correction; pattern recognition; programming circuitry; CMOS image sensors; CMOS technology; EPROM; Image sensors; Image storage; Nonvolatile memory; Optical noise; Pixel; Sensor arrays; Testing;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.720395

Filename

720395