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Licensed Patent

The patents currently licensed by technology companies are shown below.

 


 

Neuron Circuit system and method for synapse weight learning

Summary: A neuron circuit performing synapse learning on weight values includes a first sub-circuit, a second sub-circuit, and a third sub-circuit. The first sub-circuit is configured to receive an input signal from a pre-synaptic neuron circuit and determine whether the received input signal is an active signal having an active synapse value. The second sub-circuit is configured to compare a first cumulative reception counter of active input signals with a learning threshold value based on results of the determination. The third sub-circuit is configured to perform a potentiating learning process based on a first probability value to set a synaptic weight value of at least one previously received input signal to an active value, upon the first cumulative reception counter reaching the learning threshold value, and perform a depressing learning process based on a second probability value to set each of the synaptic weight values to an inactive value.

Status:  Licensed Patent  Priority 06/11/2017

Inventors: Stromatias Evangelos; Yousefzaded Amirreza

Patent HolderSpanish National Research Council  and  Samsung Electronics CO

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Unsupervised detection of repeating patterns in a series of events

Summary:  A method of performing unsupervised detection of repeating patterns in a series (TS) of events (E21, E12, E5 ...), comprising the steps of:
a) Providing a plurality of neurons (NR1 - NRP), each neuron being representative of W event types;
b) Acquiring an input packet (IV) comprising N successive events of the series;
c) Attributing to at least some neurons a potential value (PT1 - PTP), representative of the number of common events between the input packet and the neuron;
d) Modify the event types of neurons having a potential value exceeding a first threshold TL; and
e) generating a first output signal (OS1 - OSP) for all neurons having a potential value exceeding a second threshold TF, and a second output signal, different from the first one, for all other neurons.

A digital integrated circuit configured for carrying out such a method.

Status:  Licensed Patent. Priority Date 21/11/2016

Inventors: Simon Thorpe; Timothée Masquelier; Jacob Mart; Amir Reza Yousefzadeh

Patent Holder:  Spanish Research Scientific Council; Centre National de la Recherche Scientifique.

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Digital electronic circuit and system implementing a spiking neural network for performing unsupervised detection of patterns

Summary: A digital electronic circuit (SNN) implementing a spiking neural network comprising: an input unit, (IU) for receiving a series of digital signals (ES) representing respective events and for generating a data packet (PK) representative of N contiguous signals of the series, with 1≤N≤M; a memory (NM) storing data defining a plurality of neurons, comprising for each neuron a set of binary weights (BWV); a match calculating unit (MCU), connected to said input unit and said memory, configured for computing, for at least some of the neurons, a potential value (PT) representative of a match between said data packet and said binary weights; and for generating a series of output signals (OS) indicative of neurons having a potential value exceeding a threshold TF, called firing threshold; and a learning unit (LU), for modifying the set of binary weights of neurons having a potential value exceeding a threshold TL, called learning threshold

Status: Licensed Patent. Priority Date: 21/11/2016

Inventors:  Thorpe, Simon; Masquelier, Timothée; Martin, Jacob; Yousefzadeh, Amir Reza

Patent Holder: Centre National de la Recherche Scientifique; Consejo Superior De Investigaciones Científicas

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Pixel circuit for detecting time-dependent visual data

Summary: A pixel circuit for detecting time-dependent visual data comprises a photo sensing device detecting a light intensity and generating a signal representing the detected light intensity. The pixel circuit further comprises: - a voltage amplifier configured for amplifying the signal representing the detected light intensity (V ph ) and generating an amplified signal (V o ), the amplified signal being generated by taking into account a control signal (V qDC ) which shifts an input voltage offset of said voltage amplifier, - a hysteresis comparing module configured for comparing the amplified signal to at least one threshold value (¸o+, ¸o- ) and to a reference value (V ref ) and for generating at least one output signal (V o +, V o -;Vo 1+ , V o1- ) based on said comparison, and - a feedback control module configured for generating said control signal of said voltage amplifier based on said at least one output signal generated by said hysteresis comparing module.

Status  Licensed Patent  Priority Date 20/10/2016 Licensee: Prophesse

Inventors: Finateu, Thomas; Linares-Barranco, Bernabé ; Serrano-Gotarredona, Teresa ; Posch, Christoph.

Patent Holder: Chronocam and Spanish Research Scientific Council  

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Sample and hold based temporal contrast vision sensor

Summary: This invention relates to a pixel circuit comprising a photo-sensor stage  comprising a photodiode  delivering a photoreceptor current (Iph), a comparison stage (30) configured for detecting a change in a signal voltage (Vph) derived from said photoreceptor current, a sample-and-hold circuit connected to the converting stage  and to the comparison stage , said comparison stage configured to output an input signal for the sample- and-hold circuit, and for emitting a sampling signal to a control terminal of the sample-and-hold circuit  when a change is detected in the signal voltage (Vph).

Status: Licensed Patent  Priority date:   04/04/2016    Licensee: Prophesse

Inventors: Finateu, Thomas; Linares-Barranco, Bernabé ; Serrano-Gotarredona, Teresa ; Posch, Christoph.

Patent Holder: Chronocam  and Spanish National Research Council

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System and method for prevention agains electric discharges and/or electric arcs

Summary:

The invention relates to a system and method for prevention against electric discharges and/or electric arcs for people located close to an electrical installation . Specifically, the system comprises an actuator device which can shut-off the electrical flow of the electrical installation and which is wirelessly connected to a sensor device  that can wirelessly detect electric fields emitted by the body of the person and/or by the electrical installation , and also warn the person that there is a risk of an electric discharge and/or electric arc.

Status:  Licensed Patent   Priority:  24/09/2015  Licensee:  Ilunium System S.L.,

Inventors: Charneco Fernández, Juan; Palacios De La Olla, Ricardo; Delgado Restituto, Manuel.

Patent Holder:  Spanish National Research Council ; Juan Charneco Fernández y Ricardo Palacios De La Olla.

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Method and device for detecting the temporal variation of the light intensity in a matrix of photosensors

SummaryThe invention relates to a method and a device for detecting the temporal variation of the light intensity in a matrix of photosensors, comprising a matrix of pixels, a block for the automatic adjustment of the amplification of the photocurrent, and an arbitrating and event-encoding block. Each pixel comprises a photosensor that generates a photocurrent, an adjustable gain current mirror connected to the outlet of the photosensor, a transimpedance amplifier arranged at the outlet of the current mirror, optionally at least one amplification circuit arranged at the outlet of the transimpedance amplifier, and capacitors and detectors of thresholds for determining whether the output voltage exceeds a higher threshold or drops below a lower threshold in order to generate an event in the pixel. 

Status:  Licensed Patent   Priority:  11/12/2013  Licensee: Chronocam

Inventors: Serrano Gotarredona, Teresa and Linares Barranco, Bernabé 

Patent Holder: Spanish National Research Council

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Low-mismatch and low-consumption transimpedance gain circuit for temporally differentiating photo-sensing systems in dynamic vision sensors

SummaryThe invention relates to a low-mismatch and low-consumption transimpedance gain circuit for temporally differentiating photo-sensing systems in dynamic vision sensors, which uses at least one photodiode and at least two in-series transistors, each of the transistors being connected in diode configuration and being positioned at the output of the photodiode. The output current from the photodiode flows through the drain-source channels of the transistors and the source of the last transistor in series is connected to a voltage selected from earth voltage, a constant voltage or a controlled voltage.

Status:  Licensed Patent  Priority 26/05/2011 Licensee: Chronocam

Inventors: Serrano Gotarredona, Teresa and Linares Barranco, Bernabé

Patent Holder: Spanish National Research Council 

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