UM  > 微電子研究院
A 12 pJ/Pixel analog-to-information converter based 816 × 640 pixel CMOS image sensor
Chen D.G.1; Tang F.3; Law M.-K.2; Bermak A.1
2014
Source PublicationIEEE Journal of Solid-State Circuits
ISSN00189200
Volume49Issue:5Pages:1210-1222
Abstract

Analog-to-information converters (AICs) take advantage of the limited information bandwidth in high-frequency signals to improve the energy efficiency of front-end data converters. High-resolution image sensors often convey limited information due to the spatial redundancy between neighboring pixels. This paper proposes a mixed-signal AIC which compresses each nonoverlapping 4 × 4 pixel block in a 816 × 640 pixel prototype active-pixel sensor (APS) imager. It combines an energy-efficient charge-pump bit-image processor (BIP) with an area-efficient successive-approximation-register-single-slope (SAR-SS) hybrid analog-to-digital converter (ADC) via a charge-transfer- amplifier (CTA). The AIC is fully dynamic and consumes no static power. The ADC's capacitor array doubles as a computational device for parts of the compression algorithm which reduces its sampling rate by a factor of four. The compressed data contains direct edge information and can be decoded by a very simple receiver. The fabricated prototype consumes 12 pJ per pixel at 111 fps in the image compression mode and 48 pJ per pixel at 28.7 fps in raw data mode (9 b per pixel) under the same clock rate. To the best of our knowledge, this is the most energy-efficient compressive CMOS image sensor ever reported in the literature, thanks to the proposed AIC. © 1966-2012 IEEE.

KeywordAnalog-to-information Converter (Aic) Charge Transfer Amplifier Cmos Image Sensor Compressive Sensing Image Compression Sar Adc
DOI10.1109/JSSC.2014.2307063
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000335375700012
Fulltext Access
Citation statistics
Cited Times [WOS]:15   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Corresponding AuthorChen D.G.; Tang F.; Law M.-K.; Bermak A.
Affiliation1.Hong Kong University of Science and Technology
2.Universidade de Macau
3.Chongqing University
Recommended Citation
GB/T 7714
Chen D.G.,Tang F.,Law M.-K.,et al. A 12 pJ/Pixel analog-to-information converter based 816 × 640 pixel CMOS image sensor[J]. IEEE Journal of Solid-State Circuits,2014,49(5):1210-1222.
APA Chen D.G.,Tang F.,Law M.-K.,&Bermak A..(2014).A 12 pJ/Pixel analog-to-information converter based 816 × 640 pixel CMOS image sensor.IEEE Journal of Solid-State Circuits,49(5),1210-1222.
MLA Chen D.G.,et al."A 12 pJ/Pixel analog-to-information converter based 816 × 640 pixel CMOS image sensor".IEEE Journal of Solid-State Circuits 49.5(2014):1210-1222.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen D.G.]'s Articles
[Tang F.]'s Articles
[Law M.-K.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen D.G.]'s Articles
[Tang F.]'s Articles
[Law M.-K.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen D.G.]'s Articles
[Tang F.]'s Articles
[Law M.-K.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.