10 mW CMOS retina and classifier for handheld, 1000 images/s optical character recognition system

Author

Masa, Pavel ; Heim, P. ; Franzi, E. ; Arreguit, X. ; Heitger, F. ; Ruedi, P.F. ; Nussbaum, P. ; Piiloud, P. ; Vittoz, E.

Author_Institution

Centre Suisse d´Electron. et de Microtech. SA, Neuchatel, Switzerland

fYear

1999

fDate

17-17 Feb. 1999

Firstpage

204

Lastpage

205

Abstract

The optical character-recognition (OCR) system described consists of a CMOS retina, an analog classifier IC and a microcontroller. The retina converts the parallel optical input into an oriented edge representation which is processed further and recognized by the classifier in real-time. The microcontroller postprocesses the time sequence of classifier outputs and provides timing and control. The system can be used as a handheld OCR scanner which processes the field of view 1000 times per second. The system output is the character string being scanned.

Keywords

CMOS analogue integrated circuits; analogue processing circuits; edge detection; image classification; optical character recognition; optical scanners; 10 mW; CMOS classifier; CMOS retina; analog classifier IC; handheld OCR scanner; microcontroller; optical character recognition system; oriented edge representation; parallel optical input; system output; time sequence; timing; Capacitors; Character recognition; High speed optical techniques; Information processing; Neural networks; Optical arrays; Optical character recognition software; Pixel; Retina; Solid state circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

0-7803-5126-6

Type

conf

DOI

10.1109/ISSCC.1999.759194

Filename

759194