Moirans, France
Moirans, France

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Patent
Trixell | Date: 2015-04-03

A method for calibrating a digital imager using a sequence of P input images, to which images a calibrating image is applied to obtain a sequence of P output images is provided. The calibration is performed by updating the calibrating image by estimating, in an iteration n, n being an integer higher than or equal to 1, an image representative of the calibrating image.


Patent
Trixell | Date: 2017-02-15

The invention relates to a method for calibrating a digital imager from a sequence of P input images (An), to which a calibration image (C_REF) is applied in order to obtain a sequence of P output images (Yn). According to the invention, the calibration is carried out by updating the calibration image (C_REF) by estimation, with n iterations, of an image (Cn) representative of the calibration image (C_REF), n being a whole number higher than or equal to 1.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: ICT-03-2014 | Award Amount: 9.73M | Year: 2015

General X-ray image sensing is undergoing a major transition away from analog solutions towards Direct Radiography using digital Flat-Panel Detector (FPD) technology, offering immediate imaging, large productivity, lower dose and portability. LORIX will develop, prototype and demonstrate large area X-ray FPD detectors enabled by TOLAE technology by combining a printed Organic Photo Diode (OPD) with existing Thin Film Transistors active matrices (TFT), in security, health and Non Destructive Testing applications. LORIX will consider two complementary technology routes for effective market introduction: - The short term (2020), low risk route, based on Organic Detector On Glass (oDOG) concept, integrates printed OPD layer on a-Si active matrix on glass, used for displays. This will result in highly competitive organic FPDs with higher performance at lower manufacturing cost. - The medium (2022) term route, relying on Organic Detector On Foil (oDOF) concept, integrates a printed OPD on an organic TFT active matrix on foil. This full organic sensor on foil with improved mechanical robustness and lightweight will enable an easier penetration into nomadic X-ray markets and later will pave the way for dynamic, curved and flexible image sensors. LORIX partners are complementary and cover the full TOLAE value chain: material supplier, equipment manufacturers, companies & research organisations for OPD & OTFT design & integration, companies for production of sensors and full systems. Major OLAE European pilot facilities, PICTIC in Grenoble, Plastic Logic in UK & Germany, will be used for effective industrial exploitation of the products in Europe. Entering an existing business, LORIX will have direct access to end users in the targeted applications. LORIX innovations will strengthen the European industries leadership on X-ray market and will contribute to build a complete value chain with manufacturing capabilities in Europe for large area organic sensors applications.


Patent
Trixell | Date: 2013-12-20

A portable radiological cassette is designed to equip a digital radiological system. The cassette comprises a digital ionizing radiation detector in the form of a flat panel which makes it possible to provide an image which depends on the radiation received, with an electronic board ensuring the control of the digital detector, and a casing ensuring the mechanical protection of the detector and the electronic board. The cassette additionally comprises a flat seating which supports the detector on a first one of its main faces, and supports the electronic board on a second one of its main faces, the two main faces being opposite. The seating is formed by a heterogeneous stack produced such that the surface thermal conductivity of the seating is greater than the transverse thermal conductivity of the seating.


Patent
Trixell | Date: 2014-11-05

An image detector comprises a sensor produced on a first monolithic substrate comprising a set of pixels organized in a matrix on rows and columns and configured to generate signals as a function of a radiation striking the detector, column conductors, each linking the pixels of a same column and intended to convey the signals generated by the pixels, at least one bump contact situated at the periphery of the first substrate and outside of the matrix of pixels and linked to the column conductors. At least two column conductors are connected together on the first substrate outside of the matrix of pixels and the column conductors connected together converge toward the at least one bump contact.


An integrated circuit comprising N adjacent identical blocks indexed by index j, a current block connected to preceding and following blocks, each comprising identification circuits comprises: N ordered inputs indexed i, connected to N outputs of the preceding block of same index; and N ordered outputs indexed i, connected to N inputs of the following block of same index; each input for iN of the current block connected by routing line indexed to output i+1 of the current block; last input N of the current block not connected to output of the current block; and first output 1 of the current block not connected to input of the current block; each block comprising: a connection pad; and N logic gates indexed i, each gate comprising first and second inputs and an output, N buses indexed i comprising a line through N blocks, and connected to output of a logic gate.


Patent
French Atomic Energy Commission and Trixell | Date: 2014-10-29

An electronic read circuit for a radiation detector comprises: an element sensitive to the radiation, an injection circuit, able to inject a charge at one terminal of the sensitive element, the injection circuit extending between at least one input terminal and one output terminal, the output terminal being able to be connected to the sensitive element, the injection circuit being able to produce a charge under the effect of a trigger pulse. The injection circuit is able to inject a first charge when an input terminal is connected to a first input potential and a second charge when an input terminal is connected to a second input potential. The circuit comprises means for storing a difference between an output potential of the injection circuit, called equilibrium potential, and a reference potential, such that the second charge depends on the second input potential and on the equilibrium potential.


Patent
French Atomic Energy Commission and Trixell | Date: 2014-10-29

A method for processing signals collected by pixels of a detector, each pixel being able to collect a signal under the effect of radiation to which the detector is subjected comprises: identifying a pixel, termed the affected pixel, generating a signal greater than a threshold, defining at least one adjacent pixel of the affected pixel, and, for each adjacent pixel: selecting a first comparison group associated with the affected pixel and a second comparison group associated with the adjacent pixel, the first and second comparison groups not comprising any pixel in common, comparing signals collected by each comparison group so as to determine the comparison group that has accumulated the most significant amount of signal.


An imaging device comprises a sensor of surface area of at least 10 cm^(2 )and comprising: an image zone produced on a single substrate and comprising a group of pixels disposed in rows and columns, the number of pixels per column not being uniform for all the columns of pixels, each pixel collecting electric charges generated by a photosensitive element, row conductors linking the pixels row by row, column conductors linking the pixels column by column, row addressing blocks linked to the row conductors to address each row of pixels individually, and column reading blocks linked to the column conductors to read the electric charges collected by the pixels of the row selected by the row addressing blocks, the column reading blocks being situated at the periphery of the image zone; the row addressing blocks and the column reading blocks being produced on the same substrate as the image zone.


A solid-state radiation detector comprising a photosensitive sensor comprises photosensitive elements that are organized in a matrix, and a light generator whose purpose is to optically wipe the photosensitive elements. The light generator comprises: an electroluminescent layer that is distributed over the surface of the sensor; at least one electrode that continuously covers the electroluminescent layer and in which electrons may flow, the light emitted by the electroluminescent layer being capable of passing through the electrode; and additional electrical conductors that are in electrical contact with the electrode, the additional electrical conductors forming branches that extend over the surface of the electrode, and being spatially distributed across the surface of the electrode.

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