Abstract
This paper reports a 24× 57 correlation filter system for object tracking applications. While digital interfacing of the input and output data enabled a standard and flexible way of communication with pre- and post-processing digital blocks, the multiply-accumulate (MAC) operations were performed in the analog domain to save power and area. The proposed system utilizes non-volatile floating-gate memories to store filter coefficients. The chip was fabricated in a 0.13-μ m CMOS process and occupies 3.23 mm2 of silicon area. The system dissipates 388.4 μW of power at a throughput of 11.3 kVec/s, achieving an energy efficiency of 25.2 pJ/MAC. Experimental results for a custom filter designed to detect vehicles are presented.
| Original language | English |
|---|---|
| Article number | 8335328 |
| Pages (from-to) | 2764-2773 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |
| Volume | 65 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2018 |
Funding
Manuscript received November 17, 2017; revised February 28, 2018; accepted March 10, 2018. Date of publication April 11, 2018; date of current version August 3, 2018. This work was supported by the DARPA through the UPSIDE Program under Contract HR0011-13-2-0016. The views, opinions, and/or findings contained in this material are those of the authors and should not be interpreted as representing the official views or policies of the Department of Defense or the U.S. Government. This paper was recommended by Associate Editor Y. Sun. (Corresponding author: Mohsen Judy.) M. Judy and P. Liu are with The University of Tennessee, Knoxville, TN 37996 USA (e-mail: [email protected]; [email protected]).
Keywords
- Analog signal processing
- analog computing
- correlation filter
- digital interface
- floating-gate memory
- object tracking