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Specific patent-protected technology produced at the IMSE-CNM during the course of research activities is listed below. Collaboration between IMSE-CNM and interested companies may be established either through development agreements with a licensing options, or through licenses for commercial exploitation.

Sensor electrons for electron microscopy
Inventors: Ricardo Carmona Galán, Lionel Cervera Gontard
Applicants: CSIC
Application Number: PCT/ES2017/070489
Filing Date: 06.07.2017
[abstract]
The present invention is an electron sensor, and a system with a plurality of electron sensors for electron microscopy performed by an electron microscope. More specifically, the electron microscope generates an electron beam comprising at least one electron impinging on a surface side reception of said sensor electrons and this generates an electric charge of electron-hole pairs (eh) they are detected and / or measured by at least electrodes associated with a unit of electrical circuitry to form an image with high dynamic range and measure the energy of incident electrons in each pixel image.

Sample and hold based temporal contrast vision sensor
Inventors: Thomas Finateu, Bernabé Linares Barranco, Teresa Serrano Gotarredona, Christoph Posch
Applicants: Chronocam, CSIC
Application Number: PCT/EP2017/057985
Filing Date: 04.04.2017
[abstract]
This invention relates to a pixel circuit comprising a photo-sensor stage comprising a photodiode delivering a photoreceptor current (Iph), a comparison stage 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).

System and method for prevention against electric discharges and/or electric arcs
Inventors: Juan Charneco Fernández, Ricardo Palacios de la Olla, Manuel Delgado Restituto
Applicants: CSIC, Juan Charneco Fernández, Ricardo Palacios de la Olla
Application Number: PCT/ES2016/070668
Filing Date: 23.09.2016
[abstract]
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.

Pixel cell having a reset device with asymmetric conduction
Inventors: Jorge Fernández Berni, Michael Niemier, Xiabobo Sharon Hu, Ricardo Carmona Galán, Angel Rodríguez Vázquez
Applicants: Jorge Fernández Berni, Michael Neimier, Xiabobo Sharon Hu, Ricardo Carmona Galán, Angel Rodríguez Vázquez
Application Number: 15/220473
Filing Date: 27.07.2016
[abstract]
Embodiments of the disclosure provide a solution to carry out High Dynamic Range (HDR) imaging based on dynamic well capacity adjustment without incurring additional spatial-temporal noise and consequent Signal-to-Noise Ratio (SNR) dips caused by the sub-threshold operation of a CMOS (Complementary Metal-Oxide-Semiconductor) reset transistor in a pixel cell. Embodiments of the disclosure employ realizations of transistors other than CMOS, e.g. Tunnel Field-Effect Transistors (TFETs), featuring asymmetric conduction between two of its terminals, where asymmetric conduction means that current can only flow in one direction between those two terminals. In some embodiments, one of such realizations plays the role of the pixel reset transistor in order to exploit the asymmetric conduction to perform dynamic well capacity adjustment. As a result, the sources of spatial-temporal noise arising from the sub-threshold operation of the pixel reset transistor in CMOS implementations are removed.

Neural sensing channel and neural sensing method
Inventors: Manuel Delgado Restituto, Alberto Rodríguez Pérez, Angel Rodríguez Vázquez
Applicants: Universidad de Sevilla, CSIC
Application number: PCT/ES2015/070622
Filing date: 13.08.2015
[abstract]
A Spanish public research organisation (CSIC), in collaboration with the Universidad de Sevilla, has developed a sensor system for the acquisition, digitization and processing of neural signals recorded by an intracranial microelectrode. The system also comprises the methods and means for real-time data compression which make it possible to obtain a simplified representation of the action potentials detected.

Bioimpedance measurement system for wirelessly monitoring cell cultures in real time, based on an oscillation test using integrated circuits
Inventors: Gloria Huertas Sánchez, José Andrés Maldonado Jacobi, Alberto Yúfera García
Applicants: Universidad de Sevilla
Application number: PCT/ES2015/000101
Filing date: 30.07.2015
[abstract]
The invention relates to a novel bioimpedance measurement system for wirelessly monitoring cell cultures in real time. The system uses electrodes as bioimpedance sensors and implements a "biological oscillator" circuit for measurement with integrated circuits. The invention uses oscillation parameters (frequency, amplitude, phase etc.) as empirical markers for carrying out a suitable interpretation in terms of identification of cell size, cell count, cell growth, growth rate, etc.

Bioimpedance measuring system for wirelessly monitoring cell cultures in real time, based on CMOS circuits and electrical modelling
Inventors: Alberto Olmo Fernández, Gloria Huertas Sánchez, Alberto Yúfera García
Applicants: Universidad de Sevilla
Application number: PCT/ES2015/000064
Filing date: 12.05.2015
[abstract]
The invention relates to a novel bioimpedance measuring system for wirelessly monitoring cell cultures in real time. The system uses a two-dimensional (2D) array of electrodes as bioimpedance sensors and implements the measuring circuit with CMOS technology, using electrical modelling for image reconstruction.

System and method for acquisition and transferring neuronal activity
Inventors: Manuel Delgado Restituto, Alberto Rodríguez Pérez, Ángel Rodríguez Vázquez
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2015/070201
Filing date: 20.03.2015
[abstract]
The invention relates to a system for acquiring and transferring neuronal activity, comprising at least one plurality of bio-electrical sensors, a wireless transceiver, a communications node connected between the plurality of bio-electrical sensors and the wireless transceiver, and a plurality of intra-cranial electrodes, said communications node being designed to bi-directionally transmit data between the plurality of bio-electrical sensors and the wireless transceiver, such that, in the direction of data transmission from the wireless transceiver to the bio-electrical sensors, the communications node processes a parameter setting, a calibration and an operating mode of the bio-electrical sensors, and, in the direction of data transmission from the bio-electrical sensors; to the wireless transceiver, the communications node collects, serially arranges and forms neuronal information from a neuronal signal captured by the plurality of bio-electrical sensors.

Method and device for generating identifiers and truly random numbers
Inventors: Iluminada Baturone Castillo, Susana Eiroa Lorenzo, Miguel Angel Prada Delgado
Applicants: Universidad de Sevilla, CSIC
Application number: PCT/ES2015/000038
Filing date: 19.03.2015
[abstract]
Microelectronic device that can generate simultaneously high-quality identifiers and true random numbers from the start-up values of semiconductor memories that use bistable latching cells (such as SRAMs). The identifiers generated are unique of that memory. Experimental results has shown that the method reduces the length of the identifiers in up to 45% with the same identification capability and the bits required to obtain full entropy can be reduced in 78%. The method may be applied to standard digital designs and carried out by the final user, without the need of complex laboratory set-ups.

Hardware for computing the integral image
Inventors: Jorge Fernández Berni, Ángel Rodríguez Vázquez, Rocío del Río Fernández, Ricardo Carmona Galán
Applicants: Universidad de Sevilla, CSIC
Application number: PCT/ES2015/000037
Filing date: 19.03.2015
[abstract]
The invention relates to mixed-signal hardware for computing the integral image in the focal plane using a cluster of basic sensor-processing cells, the interconnection of which cluster can be reconfigured using peripheral circuitry that permits a processing task, that is very useful in artificial vision, to be very efficiently carried out, such as the calculation of the integral image in settings, such as, inter alia, monitoring natural spaces, robotics, and aiding unmanned air navigation. The scientific-technical field of the invention is that of physical technologies, in particular microelectronics. The general application framework of the invention is that of very low power consumption electronic systems designed to carry out artificial vision tasks, namely capturing images, analysing same, and acting if required by the results of said analysis.

Wearable camera apparatus with selectable processing of image content
Inventors: Angel Rodríguez Vázquez, Ricardo Carmona Galán, Jorge Fernández Berni
Applicants: CSIC, Universidad de Sevilla
Application Number: EP20150380008
Filing Date: 06.03.2015  
[abstract]
Wearable camera apparatus comprising at least a camera device, a memory module, a battery module and a processor. It also comprises a switch which is operable to select one of at least two operation modes that are mutually exclusive: a first operation mode which comprises capturing an image and storing the image in the memory, and a second operation mode which comprises capturing an image, possibly altering the image in the processor and storing said altered image in the memory. A method of processing images for object obfuscation is also provided. The method is carried out by the wearable camera apparatus herein described.

System and method for the calibration of steps of acquisition and conditioning of electrical biopotentials
Inventors: Manuel Delgado Restituto, Jesús Ruiz Amaya, Alberto Rodríguez Pérez, José A. Rodríguez Rodríguez, Jens Masuch
Applicants: CSIC
Application number: PCT/ES2014/070712
Filing date: 19.09.2014
[abstract]
Low cost system for the calibration of front-ends for the acquisition and signal conditioning of bioelectrical sensors which is able to adjust the frequency transfer characteristic and the voltage gain level of the captured biopotential before its conversion to digital domain. The calibration system is autonomous, suitable for monolithic integration and has little impact on the form factor of the sensor.

Fingerprint identification method and device using same
Inventors: Rosario Arjona López, Iluminada Baturone Castillo
Applicants: Universidad de Sevilla, CSIC
Application number: PCT/ES2014/000131
Filing date: 30.07.2014
[abstract]
A microelectronic device that provides real-time human recognition from a fingerprint image. The device extracts a feature vector from the fingerprint image that allows fingerprint classification, indexing, and recognition. In addition, the method offers protection of the stored template and allows generating cryptographic keys, which increases the device security.

Method and device for detecting the temporal varation of the light intensity in a matrix of photosensors
Inventors: Teresa Serrano Gotarredona, Bernabé Linares Barranco
Applicants: CSIC
Application Number: PCT/ES2013/070787
Filing Date: 12.11.2013
[abstract]
The 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.

High-precision temperature-to-digital converter with low power consumption
Inventors: Manuel Delgado Restituto, Jesús Ruiz Amaya, Alberto Rodríguez Pérez, José A. Rodríguez Rodríguez, Jens Masuch
Applicants: CSIC
Application number: PCT/ES2013/070720
Filing date: 18.10.2013
[resumen]
The invention relates to a high-precision temperature-to-digital converter with low power consumption. The power is obtained from wireless waves. The invention also relates to a method for measuring the temperature associated with the converter. The converter comprises a thermistor, the resistance of which depends on the temperature; two resistors; an integration capacitor which are temperature invariable; and a reading and conversion circuit that measures the resistance of the thermistor and converts said value representative of the temperature into a digital code for subsequent processing. The method comprises fours steps such that the resistance of the thermistor is proportional to an expression dependent on the temperature.

Device for the hardware detection of local extremes in an image
Inventors: Jorge Fernández Berni, Ricardo Carmona Galán, Ángel Rodríguez Vázquez
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2013/000225
Filing date: 08.10.2013
[abstract]
Hardware device for detecting local extrema of an image. Processing is done at the focal plane by using mixed-signal circuitry (analog and digital). To this end, and by comparison of the neighboring pixel voltages representing the value of each pixel, the device determines the existence of local maxima and minima prior to downloading the image from the sensor. The resulting time and energy savings enables develop autonomous vision devices with low power consumption.

Wireless range-finding system for the monitoring of static and dynamic variables
Inventors: Manuel Delgado Restituto, José A. Rodríguez Rodríguez, Jesús Ruiz Amaya, Alberto Rodríguez Pérez, Jens Masuch
Applicants: CSIC
Application number: PCT/ES2013/070501
Filing date: 12.07.2013
[abstract]
System for the remote monitoring of physiological patterns, such as temperature and heart rate, without decreasing the mobility or comfort of the patient. The system comprises a reader instrument, for enabling the measure procedure and processing the received information; and patch transponders, singled out with individual identifiers, for capturing and wirelessly transmitting sensory data. The system, based on passive RFID technology combined with transmitted time reference strategies, does not require tags to be supplied from primary batteries, exhibits a wireless coverage in the order of meters and offers the ability to measure different physical quantities simultaneously.

Device for generating related multivariable piecewise functions with computer on-line search tree
Inventors: Antonio Acosta Jiménez, Iluminada Baturone Castillo, Javier Castro Ramírez, Carlos J. Jiménez Fernández, Piedad Brox Jiménez, Macarena Martínez Rodríguez
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2013/000134
Filing date: 04.06.2013
[abstract]
Method to provide the generation of digital circuits that implement multivariable Piece-Wise Affine (PWA) functions without approximations. These circuits offer a high performance in terms of area, speed, and power. The method presents two additional features: programmability and re-configurability. Both characteristics allow the implementation of several functions in the same integrated circuit, generating devices that could integrate the requirements of any controller or virtual sensor easily

Method and system for converting pulsed-processing neural network with instantaneous integration synapses into dynamic integration synapses
Inventors: Teresa Serrano Gotarredona, Bernabé Linares Barranco
Applicants: CSIC
Application number: PCT/ES2013/070285
Filing date: 07.05.2013
[abstract]
System that allows pulse processing with dynamic integration synapses into simple neural integrated circuits such as with the instant integration ones. The system is based on the incorporation of an event scheduler block which spaces the pulses received by the neurons. In this way the contribution of the pulses is not instantaneous avoiding that neurons take precipitated and erroneous activation decisions.

Device for detecting edges and improving the quality of an image
Inventors: Jorge Fernández Berni, Ángel Rodríguez Vázquez and Ricardo Carmona Galán
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2013/000109
Filing date: 03.05.2013
[abstract]
Hardware device that enables, using mixed-signal circuitry, image improvement by means of edge detection and smoothing of homogeneous areas. In order to do this, each pixel is represented by a voltage value proportional to the light intensity at that point and subsequently compared with the voltage values of neighboring pixels. The elementary in-pixel circuits have low power consumption. This enables developing power-efficient artificial vision systems with applications in robotics, surveillance and navigation aids among others.

Image processor for feature extraction
Inventors: Ángel Rodríguez Vázquez, Fernando R. Pardo Seco, Manuel Suárez Cambre, Ricardo Carmona Galán, Victor M. Brea Sánchez
Applicants: Universidad de Santiago de Compostela, Universidad de Sevilla, CSIC
Application number: PCT/ES2013/070037
Filing date: 29.01.2013
[abstract]
Hardware device that enables integration of all the elements of an artificial vision system into a single chip. The implementation of the chip into a vertical integration processing architecture, also known as 3D CMOS, enables in real time processing while maintaining a practical image size. This system represents an alternative to the high computational cost of already known image processing techniques. Autonomous systems based on this chip are useful in robotics, medical and aeronautics applications among others.

Method and system for testing integrated radio-frequency circuits at the wafer level and the use thereof
Inventors: José L. Huertas Díaz, Manuel J. Barragán Asián
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2012/070484
Filing date: 29.06.2012
[abstract]
The main objective of this invention is to provide a system and a reliable and rapid method for rejecting defective integrated transceivers at the wafer level by establishing wireless links between different circuits in the wafer such that the signals needed to test a particular transceiver are provided or read by another one of the transceivers in the same wafer. For this purpose, the system uses a low-frequency digital test apparatus which at least comprises two test needles for sending, receiving and comparing test data sequences which are interchanged between the test apparatus and the integrated circuits in the wafer.

Low-mismatch and low-consumption transimpedance gain circuit for temporally differentiating photo-sensing systems in dynamic vision sensors
Inventors: Teresa Serrano Gotarredona, Bernabé Linares Barranco
Applicants: CSIC
Application number: PCT/ES2012/070363
Filing date: 22.05.2012
[abstract]
The 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.

Magneto-electrical connection for loopback applications in integrated transceivers
Inventors: Manuel J. Barragán Asián, José L. Huertas Díaz, Eduardo Peralías Macías
Applicants: CSIC, Universidad de Sevilla
Application number: 201132116
Filing date: 28.12.2011
[abstract]
Improved loopback test method for integrated RF transceivers. The improvement is based on the use of a novel magneto-electric sensor. The sensor is composed of a magneto-electric transducer and a signal conditioning module, and enables a connection between the transmitter and receiver circuits comprising the integrated RF transceiver to test. The presented sensor implements test strategies that require no modifications to the transceiver and can be performed during normal system operation.

Adaptive method for concurrent digital calibration of the offset in comparators in analog-to-digital converters (ADCs)
Inventors: Antonio J. Ginés Arteaga, Eduardo Peralías Macías and Adoración Rueda Rueda
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2010/070322
Filing date: 13.05.2010
[abstract]
The invention relates to an adaptive method for calibrating the offset of comparators in analog-to-digital converters (ADCs). The technique used enables the effective threshold voltage or transition of the comparators to be adjusted by means of a low-cost digital control, without affecting the natural path of the signal, and therefore without interrupting the AlD conversion of the analog input. Said method is therefore a concurrent calibration technique.

Adaptive method for estimating the INL in analog-to-digital converters (ADCs)
Inventors: Antonio J. Ginés Arteaga, Eduardo Peralías Macías, Adoración Rueda Rueda
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2010/070321
Filing date: 13.05.2010
[abstract]
The invention relates to a low-cost digital method for estimating the integral non-linearity (INL) in analog-to-digital converters. Said method is valid for the testing and characterisation of any analog-to-digital conversion topology in both concurrent and non-concurrent built-in self-test BIST applications.

Charge-amplifier electronic circuit
Inventors: Juan Ramos Martos
Applicants: CSIC
Application number: PCT/ES2004/070072
Filing date: 21.09.2004
[abstract]
The invention relates to an electronic circuit and to the use thereof in charge amplifiers, such as to provide continuous stabilisation from the operating point thereof. The invention is particularly suitable for integrated circuits in which the provision ofhigh-value resistors is costly in terms of area and introduces significant interferences. The inventive circuit demonstrates that it is possible to construct resistors of more than 100 gigaohms. The invention can be used in the following specific fields: microelectromechanical capacitive sensors, piezoelectric and optical transducers, and for any application that requires the measurement of the accumulated charge or the integration of electric current. The invention can also be used in integrated circuits which require very large time constants, such as analog filters or integrators.

Device and method for measuring parameters of periodic oscillatory signals
Inventors: Diego Vázquez García de la Vega, Gildas Léger, Gloria Huertas Sánchez, José L. Huertas Díaz
Applicants: CSIC, Universidad de Sevilla
Application number: PCT/ES2002/000533
Filing date: 15.11.2002
[abstract]
The invention relates to a device and method for measuring parameters of periodic oscillatory signals. Said device comprises a sigma-delta modulator and a zero-crossing detector. The inventive method employs the aforementioned device and comprises the following steps: a) the periodic oscillatory signal, of which the parameters are to be measured, is introduced into the sigma-delta modulator and into the zero-crossing detector; b) said signal is coded in the sigma-delta modulator into pulses of ones and zeros and a synchronisation signal is generated using the zero-crossing detector; and c) the signals obtained in step b) are processed in a synchronised manner using digital processing circuits. The invention is suitable for use in the field of analogue and mixed integrated circuits. More specifically, the invention can be used to evaluate and test analogue signals by extracting oscillatory parameters using digital technology.

Circuitry for introducing initial conditions into systems based on operational amplifiers
Inventors: Diego Vázquez García de la Vega, Gloria Huertas Sánchez, José L. Huertas Díaz
Applicants: CSIC
Application number: PCT/ES2002/000203
Filing date: 26.04.2002
[abstract]
The invention relates to a method, circuitry used to accelerate the start-up of oscillators and to reduce the transient required to reach the stationary state. Although the invention is particularly suitable for oscillators, it can also be used for any type of circuit with operational amplifiers, both linear and non-linear, and, in particular, through the use of a modified amplifier, known as 'sw-opamp'. Said amplifier can operate as a normal amplifier or as a buffer according to a digital control signal. The sw-opamp is used in buffer mode together with an appropriate DC level to initialise the circuit at the desired and/or suitable point in order start up the circuit.

Circuit for recognition and categorization of binary patterns
Inventors: Teresa Serrano Gotarredona, Bernabé Linares Barranco
Applicants: CSIC
Application number: 9401031
Application date: 13.05.1994
[abstract]
The object of the invention is a circuit for the recognition and establishment of categories of binary patterns, capable of grouping by similarity a collection of binary patterns presented sequentially and/or iteratively at the circuit inputs. The circuit of the invention has the advantage of greater speed compared with software algorithms that perform similar functions and is less complex than other hardware-based solutions. The circuit is useful in speech recognition devices, as well as in robotics and process automation.

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