DocumentCode
3411958
Title
A zero-sink-current Schmitt trigger and window-flexible counting circuit for fingerprint sensor/identifier
Author
Morimura, Hiroki ; Fujii, Kenichi ; Shigematsu, Satoshi ; Okazaki, Yasuo
Author_Institution
NTT, Kanagawa, Japan
fYear
2004
fDate
15-19 Feb. 2004
Firstpage
122
Abstract
Pixel-parallel architecture with 1b ADC per pixel achieves 6.4μW dissipation. Pixel memory element and event counting sensing circuitry control fingerprint acquisition. A 224 x 256 pixel array is built in a 0.25μm CMOS process.
Keywords
CMOS image sensors; counting circuits; fingerprint identification; trigger circuits; 224 pixel; 256 pixel; CMOS process; dynamic operation; event counting sensing circuitry; fingerprint identifier; fingerprint sensor; pixel memory element; pixel-parallel architecture; range accuracy; timing chart; window-flexible counting circuit; zero-sink-current Schmitt trigger; Counting circuits; Fingerprint recognition; Large scale integration; Latches; Power measurement; Semiconductor device measurement; Size measurement; Strontium; Threshold voltage; Trigger circuits;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
ISSN
0193-6530
Print_ISBN
0-7803-8267-6
Type
conf
DOI
10.1109/ISSCC.2004.1332624
Filename
1332624
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