NASA NTRS · 20080018568
A Low-Complexity Circuit for On-Sensor Concurrent A/D Conversion and Compression
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 micrometers CMOS technology and occupies an area of 0.0918 mm2. Test measurements confirm the validity of the design
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Leon-Salas, Walter D., Balkir, Sina, Sayood, Khalid, Schemm, Nathan, Hoffman, Michael W.. 2007-09-01. A Low-Complexity Circuit for On-Sensor Concurrent A/D Conversion and Compression. https://ntrs.nasa.gov/citations/20080018568
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