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公开(公告)号：US20210344351A1
公开(公告)日：2021-11-04
申请号：US17286571
申请日：2019-11-18
发明人： Grégory WAGNER
IPC分类号： H03M1/66
摘要： Device for generating analogue signals comprises a digital-to-analogue converter comprising at least one digital input and one analogue output, a circuit for generating a first clock signal of frequency fs, and a digital register configured so as to receive at the input and to store N bits representative of an analogue output signal of the converter, N being an integer greater than or equal to 1, and for receiving the first clock signal, the register comprising, for each bit, two complementary digital outputs.
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2.发明授权公开(公告)号：US10783608B2
公开(公告)日：2020-09-22
申请号：US15780339
申请日：2016-11-29
发明人： Bruno Diasparra
摘要： The invention relates to the processing operation of interpolating the colours of a Bayer mosaic image sensor. A first elementary matrix filter, which is a bilinear interpolation filter, of size m×m, m being an odd number larger than or equal to 3, a low-pass matrix filter of size n×n, n being an odd number larger than or equal to 3, and a high-pass matrix filter, complementary to the low-pass filter, of size n×n, are defined. The first matrix filter is convoluted with the low-pass filter, resulting in a low-frequency interpolation filter of size (m+n−1)×(m+n−1), and the first matrix filter is convoluted with the high-pass filter, resulting in a high-frequency interpolation filter of size (m+n−1)×(m+n−1). The matrix of digital signals arising from the pixels is filtered separately, using the pixels of each colour, by the low-frequency interpolation filter. The complete matrix of signals is filtered using the high-frequency interpolation filter. The result of the low-frequency filtering operation and the result of the high-frequency filtering operation are added together, for each pixel, in order to obtain a numerical value of a given colour of that pixel.
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3.发明授权公开(公告)号：US10320406B2
公开(公告)日：2019-06-11
申请号：US15774455
申请日：2016-11-04
发明人： Etienne Bouin , Rémi Laube , Jérôme Ligozat , Marc Stackler
IPC分类号： H03K5/00 , H03M1/06 , H03M1/12 , H04L7/00 , H03K5/1534
摘要： In an architecture for processing data comprising a control unit and converters CNj to be synchronized to an active front of a common reference clock CLK, the synchronizing method makes provision for the converters to be arranged in at least one series chain, and for a procedure for synchronizing the converters by propagating a synchronizing signal SYNC-m emitted by the control unit, said signal being retransmitted as output OUT by each converter, after resynchronization to a clock active front, to a synchronization input IN of a following converter in the chain. Each converter comprises a synchronization configuration register REG containing at least one polarity parameter Sel-edgej that sets the polarity of the reference-clock front for reliable detection of a synchronizing signal received via the input of the converter. A phase parameter Sel-shiftj furthermore allows the phase of the sampling clocks of n converting cores of the converters, working at a sampling frequency obtained by dividing by n the CLK reference-clock frequency, to be synchronized.
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4.发明申请公开(公告)号：US20180365801A1
公开(公告)日：2018-12-20
申请号：US15780339
申请日：2016-11-29
发明人： Bruno DIASPARRA
摘要： The invention relates to the processing operation of interpolating the colours of a Bayer mosaic image sensor. A first elementary matrix filter, which is a bilinear interpolation filter, of size m×m, m being an odd number larger than or equal to 3, a low-pass matrix filter of size n×n, n being an odd number larger than or equal to 3, and a high-pass matrix filter, complementary to the low-pass filter, of size n×n, are defined. The first matrix filter is convoluted with the low-pass filter, resulting in a low-frequency interpolation filter of size (m+n−1)×(m+n−1), and the first matrix filter is convoluted with the high-pass filter, resulting in a high-frequency interpolation filter of size (m+n−1)×(m+n−1). The matrix of digital signals arising from the pixels is filtered separately, using the pixels of each colour, by the low-frequency interpolation filter. The complete matrix of signals is filtered using the high-frequency interpolation filter. The result of the low-frequency filtering operation and the result of the high-frequency filtering operation are added together, for each pixel, in order to obtain a numerical value of a given colour of that pixel.
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5.发明申请公开(公告)号：US20180323794A1
公开(公告)日：2018-11-08
申请号：US15774455
申请日：2016-11-04
发明人： Etienne BOUIN , Rémi LAUBE , Jérôme LIGOZAT , Marc STACKLER
IPC分类号： H03M1/06
CPC分类号： H03M1/0624 , H03K5/1534 , H03K2005/00267 , H03M1/1215
摘要： In an architecture for processing data comprising a control unit and converters CNj to be synchronized to an active front of a common reference clock CLK, the synchronizing method makes provision for the converters to be arranged in at least one series chain, and for a procedure for synchronizing the converters by propagating a synchronizing signal SYNC-m emitted by the control unit, said signal being retransmitted as output OUT by each converter, after resynchronization to a clock active front, to a synchronization input IN of a following converter in the chain. Each converter comprises a synchronization configuration register REG containing at least one polarity parameter Sel-edgej that sets the polarity of the reference-clock front for reliable detection of a synchronizing signal received via the input of the converter. A phase parameter Sel-shiftj furthermore allows the phase of the sampling clocks of n converting cores of the converters, working at a sampling frequency obtained by dividing by n the CLK reference-clock frequency, to be synchronized.
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6.发明申请公开(公告)号：US20170331468A1
公开(公告)日：2017-11-16
申请号：US15534524
申请日：2015-12-08
发明人： Bruno DIASPARRA , Frédéric BARBIER
IPC分类号： H03K5/15
CPC分类号： H03K5/1508 , H03K5/135
摘要： The invention proposes a method for distributing a signal to each block Bj of a series of N adjacent blocks of identical design in an electronic circuit. It proposes, in an identical fashion for each of the N blocks, placing a timing delay circuit MUX-DELj on the path for conveying a signal Sc from the input INcj of the block to an internal electrical node Ndj of the block for this signal Sc; providing for the timing delay circuit to supply N delayed signals corresponding to N different timing delays Δf1 , . . . Δfj, . . . ΔfN separated by an increment of elementary duration Δt that corresponds to the elementary delay Δt for transit of a block introduced into a conductive line; and selecting the delayed signal corresponding to the applicable timing delay according to the block in question, by means of an index signal propagated through the N blocks, and which is incremented or decremented on passage through each block.
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公开(公告)号：US11806180B2
公开(公告)日：2023-11-07
申请号：US17065850
申请日：2020-10-08
发明人： Caroline Papaix , Pierre Fereyre , Raphaël Neri
CPC分类号： A61B6/145 , A61B6/4233 , G01T1/247
摘要： The subject matter of the invention is an active pixel dental radiological image sensor, with integrated X-ray occurrence detection, which uses the pixels of the matrix to detect the start of an X-ray flash, by detecting the current produced by all the photodiodes in the matrix. A switching circuit MUX1 thus allows, in a first phase of detecting the start of an X-ray flash, a common connection node NC to be connected that corresponds to the drain of a photodiode initialisation transistor M1 at the input of a current-voltage conversion detection circuit DTX1, which provides as output a signal for detecting the start of an X-ray flash when the current produced by all the photodiodes of the matrix exceeds a predetermined threshold. The switching circuit MUX1 is then controlled to connect the common connection node NC of the pixels to a photodiode re-initialisation voltage source, VRS. In an alternative embodiment, some pixels of the matrix can be used to detect the end of an X-ray flash using the same principle, by injecting the current produced by the photodiodes of these pixels that is collected on a different common connection node, electrically isolated from the first, with the end of flash signal corresponding to a variation in this current, which falls below a predetermined threshold. The active pixels can be of the three or more transistor type, in particular with five and more transistors.
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公开(公告)号：US20210168320A1
公开(公告)日：2021-06-03
申请号：US16071229
申请日：2017-01-16
发明人： Frédéric BARBIER , Frédéric MAYER , Pierre FEREYRE
IPC分类号： H04N5/372 , H01L27/148 , H04N5/353
摘要： The invention relates to charge-coupled TDI image sensors for the observation of one and the same image strip by multiple rows of pixels in succession with summation of the electric charge generated by an image point, for a row duration (TL ), in the pixels of the same rank of the various rows. According to the invention, the pixels are subdivided, in the direction of movement, into at least two adjacent portions (SUBai,j, SUBbi,j), each portion comprising at least one charge storage area that is independent of the storage areas of the other portion while allowing a transfer of charge from the first portion to the second, one of the portions (SUBai,j) being masked against light and the other portion (SUBbi,j) not being masked. The unmasked portion comprises a charge removal structure which is activated at a variable moment in time defining a start of actual integration that is independent of the start of a period of observing the image strip. It is thus possible to define a time of exposure to light TINT that does not depend on the relative speed of movement of the sensor and of the image, unlike the typical charge-coupled TDI sensors in which the duration of exposure is equal to the row period TL (linked to the speed of movement).
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公开(公告)号：US10393892B2
公开(公告)日：2019-08-27
申请号：US16069227
申请日：2017-01-10
摘要： A circuit (300) for detecting the appearance of x-rays with a view to triggering a radiological image capture, comprising a set (301) of photodiodes that is connected to a ground (GD), an amplifying circuit (302) and a capacitor (C2), the amplifying circuit (302) comprising an amplifier (AMP) and a voltage source (GEN) and being connected, via a first input, to the output of the set (301) of photodiodes, the capacitor (C2) being connected between the ground (GD) and a second input of the amplifier (AMP), the detecting circuit (300) being characterized in that the amplifying circuit (302) is configured to carry out in succession the steps of: Charging the capacitor (C2) with a reference voltage (Vref) generated by the voltage source (GEN); Isolating the second input of the amplifier (AMP) from the voltage source (GEN); and Integrating the current generated by the set (301) of photodiodes.
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公开(公告)号：US20190025444A1
公开(公告)日：2019-01-24
申请号：US16069227
申请日：2017-01-10
CPC分类号： G01T1/247 , A61B6/14 , A61B6/4233 , H04N5/32
摘要： A circuit (300) for detecting the appearance of x-rays with a view to triggering a radiological image capture, comprising a set (301) of photodiodes that is connected to a ground (GD), an amplifying circuit (302) and a capacitor (C2), the amplifying circuit (302) comprising an amplifier (AMP) and a voltage source (GEN) and being connected, via a first input, to the output of the set (301) of photodiodes, the capacitor (C2) being connected between the ground (GD) and a second input of the amplifier (AMP), the detecting circuit (300) being characterized in that the amplifying circuit (302) is configured to carry out in succession the steps of: Charging the capacitor (C2) with a reference voltage (Vref) generated by the voltage source (GEN); Isolating the second input of the amplifier (AMP) from the voltage source (GEN); and Integrating the current generated by the set (301) of photodiodes.
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