Accession Number : ADP008670

Title :   The First Demonstration on an Optical Learning Chip,

Corporate Author : MITSUBISHI ELECTRIC CORP AMAGASAKI (JAPAN) CENTRAL RESEARCH LAB

Personal Author(s) : Kyuma, Kazuo ; Nitta, Yoshikazu ; Ohta, Jun ; Tai, Shuichi ; Takahashi, Masanobu

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : In this paper, we report on the optical learning chip for the first time, which acquires knowledge from the external circumstances in real time. The key point to succeed in it is the development of a fast-operating and variable-sensitivity photodiode (VSPD) that has the combined functions of the analogue SLM and the photodiode. The learning speed exceeding 640 MCUPS, which is 500 to 1000 times higher than that of the present engineering work stations, was obtained for the 8 neuron- and 64 synapse-optical neurochip. We also demonstrate the experimental results of the pattern classification with 12 training signals using this chip and the back-propagation (BP) learning algorithm.

Descriptors :   *CHIPS(ELECTRONICS), *PHOTODIODES, LIGHT MODULATORS, THREE DIMENSIONAL, NEURAL NETS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE