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公开(公告)号：US09678220B2
公开(公告)日：2017-06-13
申请号：US14362429
申请日：2012-12-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann
CPC classification number: G01T1/17 , G01N23/04 , G01T1/208 , G01T1/247 , G01T1/2985
Abstract: The present invention relates to an x-ray detector comprising a sensor unit for detecting incident x-ray radiation comprising a number of sensor elements, a counting channel per sensor element for obtaining a count signal by counting photons or charge pulses generated in response to the incident x-ray radiation since a beginning of a measurement interval, an integrating channel per sensor element for obtaining an integration signal representing the total energy of radiation detected since the beginning of the measurement interval, and a processing unit for estimating, from the integration signals of the sensor elements, count signals of sensor elements whose counting channel has been saturated during the measurement interval.
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公开(公告)号：US20140319363A1
公开(公告)日：2014-10-30
申请号：US14362139
申请日：2012-12-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Klaus Juergen Engel , Christoph Herrmann
IPC: H01L27/146 , G01T1/24
CPC classification number: H01L27/14605 , G01T1/24 , G01T1/241 , H01L27/1463 , H01L27/14638 , H01L27/14659 , H01L27/14676
Abstract: The present invention relates to radiation detector (2) comprising a radiation sensitive semiconductor element (10) generating electron-hole pairs in response to an irradiation with radiation (3), an anode electrode(20) arranged on a first surface (11) of the semiconductor element (10) facing away from the radiation, said anode electrode (20) being segmented into anode segments (21) representing anode pixels, wherein anode gaps (22) are arranged between said anode segments (21), a cathode electrode (30) arranged on a second surface (12) of the semiconductor element (10) opposite the first surface (11) and facing the radiation (3), said cathode electrode (30) being segmented into first and second cathode segments (31, 32), wherein said first cathode segments (31) are substantially arranged opposite said anode segments (21) and said second cathode segments (32) are substantially arranged opposite said anode gaps (22), and a cathode terminal (41, 42) providing electrical connections to said first cathode segments (31) and said second cathode segments (32) for coupling different electrical potentials to said first and second cathode segments (31, 32). By such an arrangement charge sharing can be effectively reduced.
Abstract translation: 本发明涉及辐射检测器（2），其包括响应于辐射（3）的辐射而产生电子 - 空穴对的辐射敏感半导体元件（10），布置在第一表面（11）上的阳极电极 所述半导体元件（10）背离所述辐射，所述阳极电极（20）被分割成表示阳极像素的阳极段（21），其中阳极间隙（22）布置在所述阳极段（21），阴极电极 30）布置在所述半导体元件（10）的与所述第一表面（11）相对并且面对所述辐射（3）的第二表面（12）上，所述阴极电极（30）被分割成第一和第二阴极段（31,32 ），其中所述第一阴极段（31）基本上与所述阳极段（21）相对布置，并且所述第二阴极段（32）基本上与所述阳极间隙（22）相对布置，并且阴极端子（41,42）提供电 连接到sa 第一阴极段（31）和所述第二阴极段（32），用于将不同的电位耦合到所述第一和第二阴极段（31,32）。 通过这样的布置，可以有效地减少电荷共享。
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公开(公告)号：US20140198710A1
公开(公告)日：2014-07-17
申请号：US14218396
申请日：2014-03-18
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann
IPC: H04W4/06
CPC classification number: H04W4/06 , H04L1/1607 , H04L1/1692 , H04L1/1887 , H04L1/1896 , H04L12/1868 , H04L12/189 , H04L2001/0093 , H04W52/36 , H04W52/48 , H04W76/40
Abstract: Data transmission in a multicast fashion in which retransmissions are requested by recipients sending feedback to the one sender. Receiving stations are informed about the feedback of another receiving station. This is done by mirroring the feedback of receiving stations to other receiving stations. Due to this, in case, for example, one of the mirrored feedbacks is a negative acknowledgement message, the other receiving stations are informed that it is no longer necessary to provide their feedback, since a retransmission will be initiated anyway. Advantageously, this may allow reduced interference in the direction of the feedback.
Abstract translation: 以多播方式进行数据传输，其中收件人向发送者发送反馈请求重传。 接收站被通知另一个接收站的反馈。 这是通过将接收站的反馈映射到其他接收站完成的。 因此，例如，在例如其中一个镜像反馈是否定确认消息的情况下，其他接收站被通知不再需要提供其反馈，因为将重新启动。 有利地，这可以允许减小对反馈方向的干扰。
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公开(公告)号：US11988785B2
公开(公告)日：2024-05-21
申请号：US17436093
申请日：2020-03-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Christoph Herrmann
CPC classification number: G01T1/171 , A61B6/4241
Abstract: The present invention relates to photon counting. In particular, a photon-counting data acquisition module is provided. The photon-counting data acquisition module comprises a signal input unit and one or more data acquisition channels, each channel adapted for converting at least one train of pulses received from the signal input unit to a counter signal. Each data acquisition channel comprises a pulse maximum identifier and a discriminator/counter pair comprising a discriminator and a counter. The pulse maximum identifier is configured to identify a maximum of a pulse in the at least one received train of pulses. The discriminator is configured to be triggered, by a detection of a maximum of a pulse in the at least one received train of pulses, to compare the pulse with at least one signal threshold to generate the counter signal. Alternatively, the counter is configured to be enabled in response to a detection of a maximum of a pulse to generate the counter signal.
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公开(公告)号：US11340359B2
公开(公告)日：2022-05-24
申请号：US16609768
申请日：2018-04-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann , Roger Steadman Booker , Jakob Wijnand Mulder , Matthias Simon , Jacques Jules Van Oekel
Abstract: A detector includes a first detection layer (1141) and a second detector layer (1142). The first and second detection layers include a first and second scintillator (204, 7041) (216, 7042), a first and second active photosensing region (210, 7081) (220, 7082), a first portion (206, 7261) of a first substrate (208, 7061), and a second portion (218, 7262) of a second substrate (208, 7062). An imaging system (100) includes a radiation source (110), a radiation sensitive detector array (108) comprising a plurality of multi-layer detectors (112), and a reconstructor (118) configured to reconstruct an output of the detector array and produces an image. The detector array includes a first detection layer and a second detector layer with a first and second scintillator, a first and second active photosensing region, a first portion of a first substrate, and a second portion of a second substrate.
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Patent Agency Ranking
公开(公告)号：US09664558B2
公开(公告)日：2017-05-30
申请号：US14440609
申请日：2013-11-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann , Roger Steadman Booker
CPC classification number: G01J1/44 , G01J2001/4446 , G01T1/00 , G01T1/24 , H01L31/02966 , H01L31/085 , H01L31/09 , H01L31/1832
Abstract: The invention relates to radiation detection with a directly converting semiconductor layer for converting an incident radiation into electrical signals. Sub-band infra-red (IR) irradiation considerably reduces polarization in the directly converting semi-conductor material when irradiated, so that counting is possible at higher tube currents without any baseline shift. An IR irradiation device is integrated into the readout circuit to which the crystal is flip-chip bonded in order to enable 4-side-buttable crystals.
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公开(公告)号：US20140254749A1
公开(公告)日：2014-09-11
申请号：US14350370
申请日：2012-10-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Randall Peter Luhta , Christoph Herrmann
CPC classification number: H05G1/26 , G01N23/046 , G01T1/17 , G01T1/24 , G01T1/247 , G01T1/2985 , G01T7/005
Abstract: An imaging system (300) includes a detector array (314) with direct conversion detector pixels that detect radiation traversing an examination region of the imaging system and generate a signal indicative of the detected radiation, a pulse shaper (316) configured to alternatively process the signal indicative of detected radiation generated by the detector array or a set of test pulses having different and known heights that correspond to different and known energy levels and to generate output pulses having heights indicative of the energy of the processed detected radiation or set of test pulses, and a thresholds adjuster (330) configured to analyze the heights of the output pulses corresponding to the set of test pulses in connection with the heights of set of test pulses and a set of predetermined fixed energy thresholds and generate a threshold adjustment signal indicative of a baseline based on a result of the analysis.
Abstract translation: 成像系统（300）包括具有直接转换检测器像素的检测器阵列（314），其检测穿过成像系统的检查区域并产生指示检测到的辐射的信号的辐射;脉冲整形器（316），被配置为交替地处理 指示由检测器阵列产生的检测到的辐射的信号或具有对应于不同和已知能级的不同和已知高度的一组测试脉冲，并且产生具有指示经处理的检测到的辐射或一组测试脉冲的能量的高度的输出脉冲 ，以及阈值调整器（330），其被配置为分析与所述一组测试脉冲相对应的输出脉冲的高度以及一组预定的固定能量阈值，并且生成指示 基于分析结果的基准。
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公开(公告)号：US11131780B2
公开(公告)日：2021-09-28
申请号：US16623462
申请日：2018-06-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Christoph Herrmann
IPC: G01T1/24
Abstract: The invention relates to a radiation detector (1), an imaging system and a related method for radiation detection. The detector comprises a direct conversion material (2) for converting x-ray and/or gamma radiation into electron-hole pairs by direct photon-matter interaction. The detector comprises an anode (3) and a cathode (4) arranged on opposite sides of the direct conversion material (2) such that the electrons and holes can respectively be collected by the anode and cathode. The cathode is substantially transparent to infrared radiation. The detector comprises a light guide layer (5) on the cathode at a side of the cathode that is opposite of the direct conversion material, in which the light guide layer is adapted for distributing infrared radiation over the direct conversion material. The detector comprises a reflector layer (6) arranged on the light guide layer (5) at a side opposite of the cathode, in which the reflector layer is adapted for substantially reflecting infrared radiation. The detector comprises at least one light emitter (7), abutting on and/or integrated in the light guide layer (5), for emitting infrared radiation into the light guide layer.
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公开(公告)号：US10470723B2
公开(公告)日：2019-11-12
申请号：US15580290
申请日：2016-06-23
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann
Abstract: The invention relates to an x-ray device (1) for imaging an object (41). A radiation detector (3) of the x-ray device includes detector elements (21) for detecting radiation, each detector element (21) comprising an adjustable sensitive volume, where an x-ray photon entering the sensitive volume produces an electric signal used for generating the image data. Further, the device comprises a control unit (9) configured to control the sensitive volume of at least one of the detector elements (21) in accordance with a geometric structure of the object (41) to be imaged in order to reduce a pile-up effect in the detector element. Moreover, the invention relates to a method for operating the device (1) and to a computer program for carrying out the method.
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公开(公告)号：US10078009B2
公开(公告)日：2018-09-18
申请号：US14784979
申请日：2014-04-17
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner Daerr , Klaus Juergen Engel , Christoph Herrmann , Roger Steadman Booker , Ewald Roessl
Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.
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