Abstract
A low-complexity circuit for on-sensor compression is presented. The proposed circuit achieves complexity savings by combining a single-slope analog-to-digital converter with a Golomb-Rice entropy encoder and by implementing a low-complexity adaptation rule. The adaptation rule monitors the output codewords and minimizes their length by incrementing or decrementing the value of the Golomb-Rice coding parameter k. Its hardware implementation is one order of magnitude lower than existing adaptive algorithms. The compression circuit has been fabricated using a 0.35 μm CMOS technology and occupies an area of 0.0918 mm 2. Test measurements confirm the validity of the design.
Original language | English (US) |
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Pages (from-to) | 1317-1324 |
Number of pages | 8 |
Journal | IEEE Sensors Journal |
Volume | 7 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2007 |
Keywords
- Data compression
- On-sensor computation
- Source coding
ASJC Scopus subject areas
- Instrumentation
- Electrical and Electronic Engineering