公开(公告)号：GB2601415A

公开(公告)日：2022-06-01

申请号：GB202114411

申请日：2021-10-08

Applicant: IBM

Inventor： THOMAS BOHNSTINGL ,  ANGELIKI PANTAZI ,  STANISLAW ANDRZEJ WOZNIAK ,  EVANGELOS STAVROS ELEFTHERIOU

IPC: G11C13/00 ,  G06N3/063 ,  G11C11/56 ,  G11C29/56 ,  H01L45/00

Abstract: A storage device comprising a memory element which comprises a changeable physical quantity for storing information, the physical quantity in a drifted state. The memory element being configured for setting the physical quantity to an initial state. The physical quantity of the memory element drifts from the initial state to the drifted state. The initial state of the physical quantity is computable by means of an initialization function, which depends on a target state of the physical quantity and the target state of the physical quantity is approximately equal to the drifted state of the physical quantity. An integrated circuit may further comprise an assembly of memory elements and further comprise a neuromorphic neuron apparatus for simulating a layer of a neural network. Other aspects refer to computer implemented methods for (i) setting up a storage device comprising a memory element or (ii) designing an initialization function. Initialization function may be f(G)=a*e-b*G+c where G is a selected target stage, f(G) is the corresponding initial state of the physical quantity and a,b,c are coefficients.

公开(公告)号：GB2601415B

公开(公告)日：2022-12-14

申请号：GB202114411

申请日：2021-10-08

Applicant: IBM

Inventor： THOMAS BOHNSTINGL ,  ANGELIKI PANTAZI ,  STANISLAW ANDRZEJ WOZNIAK ,  EVANGELOS STAVROS ELEFTHERIOU

IPC: G11C13/00 ,  G06N3/063 ,  G06N3/08 ,  G11C11/56 ,  G11C29/56 ,  H01L45/00

Abstract: The present disclosure relates to a storage device comprising a memory element. The memory element may comprise a changeable physical quantity for storing information. The physical quantity may be in a drifted state. The memory element may be configured for setting the physical quantity to an initial state. Furthermore, the memory element may comprise a drift of the physical quantity from the initial state to the drifted state. The initial state of the physical quantity may be computable by means of an initialization function. The initialization function may be dependent on a target state of the physical quantity and the target state of the physical quantity may be approximately equal to the drifted state of the physical quantity.

公开(公告)号：GB2604835A

公开(公告)日：2022-09-14

申请号：GB202208458

申请日：2020-10-28

Applicant: IBM

Inventor： THOMAS BOHNSTINGL ,  ANGELIKI PANTAZI ,  EVANGELOS STAVROS ELEFTHERIOU

IPC: G06N3/063

Abstract: Neuromorphic methods, systems and devices (10, 11, 12) are provided. The embodiment may include a neuromorphic device (10, 11, 12) which may comprise a crossbar array structure (110) and an analog circuit. The crossbar array structure (110) may include N input lines (111, 112) and M output lines (120) interconnected at junctions via N x M electronic devices (131, 132, 32a, 132b, 132c), which, in preferred embodiments, include, each, a memristive device. The input lines (111, 112) may comprise N 1 first input lines (111) and N 2 second input lines (112). The first input lines (111) may be connected to the M output lines (120) via N 1 x M first devices (131, 132) of said electronic devices (131, 132). Similarly, the second input lines (112) may be connected to the M output lines (120) via N 2 x M second devices (132) of said electronic devices (131, 132). The analog circuit (140, 150, 160, 170) may be configured to program the electronic devices (131, 132) so as for the first devices (131) to store synaptic weights and the second devices(132) to store neuronal states.