Invention Grant
- Patent Title: System to duplicate neuromorphic core functionality
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Application No.: US15188663Application Date: 2016-06-21
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Publication No.: US10528865B2Publication Date: 2020-01-07
- Inventor: SangBum Kim , Chung H. Lam
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Ido Tuchman; Erik K. Johnson
- Main IPC: G06N3/063
- IPC: G06N3/063 ; G11C13/00 ; G06N3/04 ; G06N3/08 ; G11C11/54 ; G11C7/10

Abstract:
A neuromorphic memory circuit including a memory cell with a programmable resistive memory element. A postsynaptic capacitor builds up a leaky integrate and fire (LIF) charge. An axon LIF pulse generator activates a LIF discharge path from the postsynaptic capacitor through the resistive memory element when the axon LIF pulse generator generates axon LIF pulses. A postsynaptic comparator compares the capacitor voltage to a threshold voltage and generates postsynaptic output pulses when the capacitor voltage passes the threshold voltage. The postsynaptic output pulses include a postsynaptic firing characteristic dependent on a frequency of the axon LIF pulses. A refractory circuit prevents the postsynaptic comparator from generating additional postsynaptic output pulses until a refractory time passes since a preceding postsynaptic output pulse. A training circuit adjusts the postsynaptic firing characteristic to match a target firing characteristic.
Public/Granted literature
- US20170364793A1 SYSTEM TO DUPLICATE NEUROMORPHIC CORE FUNCTIONALITY Public/Granted day:2017-12-21
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