Time-Shared Twin Memristor Crossbar Reducing the Number of Arrays by Half for Pattern Recognition.
In this paper, we propose a new time-shared twin memristor crossbar for pattern-recognition applications. By sharing two memristor arrays at different time, the number of memristor arrays can be reduced by half, saving the crossbar area by half, too. To implement the time-shared twin memristor crossbar, we also propose CMOS time-shared subtractor circuit, in this paper. The operation of the time-shared twin memristor crossbar is verified using 3 × 3 memristor array which is made of aluminum film and carbon fiber. Here, the crossbar array is programmed to store three different patterns. When we apply three different input vectors to the array, we can verify that the input vectors are well recognized by the proposed crossbar. Moreover, the proposed crossbar is tested for the recognition of complicated gray-scale images. Here, 10 images with 32 × 32 pixels are applied to the proposed crossbar. The simulation result verifies that the input images are recognized well by the proposed crossbar, even though the noise level of each image is varied from -10 to +10 dB.
School of Electrical Engineering, Kookmin University, Seoul, Korea.
Son
S
Ngoc Truong
School of Electrical Engineering, Kookmin University, Seoul, Korea.
Khoa
K
Van Pham
School of Electrical Engineering, Kookmin University, Seoul, Korea.
Wonsun
W
Yang
School of Advanced Materials Engineering, Kookmin University, Seoul, Korea.
Anjae
A
Jo
School of Advanced Materials Engineering, Kookmin University, Seoul, Korea.
Mi Jung
MJ
Lee
School of Electrical Engineering, Kookmin University, Seoul, Korea. tyche@kookmin.ac.kr.
Hyun-Sun
HS
Mo
School of Electrical Engineering, Kookmin University, Seoul, Korea. mks@kookmin.ac.kr.
Kyeong-Sik
http://orcid.org/0000-0002-1518-7037
KS
Min
Pattern recognition; Time-shared twin memristor crossbar; Twin memristor crossbar