The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2013
Filed:
May. 21, 2009
Matthew Joseph Breitwisch, Essex Junction, VT (US);
Roger W Cheek, Yorktown Heights, NY (US);
Chung Hon Lam, Yorktown Heights, NY (US);
Dharmendra Shantilal Modha, San Jose, CA (US);
Bipin Rajendran, Yorktown Heights, NY (US);
Matthew Joseph Breitwisch, Essex Junction, VT (US);
Roger W Cheek, Yorktown Heights, NY (US);
Chung Hon Lam, Yorktown Heights, NY (US);
Dharmendra Shantilal Modha, San Jose, CA (US);
Bipin Rajendran, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system, method and computer program product for producing spike-dependent plasticity in an artificial synapse is disclosed. According to one embodiment, a method for producing spike-dependent plasticity in an artificial neuron comprises generating a pre-synaptic spiking event in a first neuron when a total integrated input to the first neuron exceeds a first predetermined threshold. A post-synaptic spiking event is generated in a second neuron when a total integrated input to the second neuron exceeds a second predetermined threshold. After the pre-synaptic spiking event, a first pulse is applied to a pre-synaptic node of a synapse having a phase change memory element. After the post-synaptic spiking event, a second varying pulse is applied to a post-synaptic node of the synapse, wherein current through the synapse is a function of the state of the second varying pulse at the time of the first pulse.