公开(公告)号：WO2010041175A1

公开(公告)日：2010-04-15

申请号：PCT/IB2009/054301

申请日：2009-10-01

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik

Inventor： DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik

IPC: H01L23/34

CPC classification number: H01L23/34 ,  H01L2924/0002 ,  H01L2924/00

Abstract: The invention relates to a power semiconductor device (100) cooling assembly for cooling a power semiconductor device (100), wherein the assembly comprises an actively cooled heat sink (102) and a controller (208; 300), wherein the controller (208; 300) is adapted for adjusting the cooling efficiency of the heat sink (102) depending on the temperature of the high current carrying semiconductor junction comprised in the power semiconductor device (100).

Abstract translation: 本发明涉及用于冷却功率半导体器件（100）的功率半导体器件（100）冷却组件，其中所述组件包括主动冷却的散热器（102）和控制器（208; 300），其中所述控制器（208; 300）适于根据包含在功率半导体器件（100）中的高载流半导体结的温度来调节散热器（102）的冷却效率。

公开(公告)号：WO2010004491A1

公开(公告)日：2010-01-14

申请号：PCT/IB2009/052895

申请日：2009-07-03

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik

Inventor： DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik

IPC: H01F17/00 ,  H01F17/06

CPC classification number: H01F17/062 ,  G01R33/28 ,  H01F17/0033 ,  H01F27/2895 ,  H05K1/165

Abstract: A toroidal coil arrangement is disclosed which comprises a first toroid coil with a first set of windings (10, 11, 12, 13) which progress in a counterclockwise direction along the toroid, and a second toroid coil with a second set of windings (20, 21, 22, 23) which progress in a clockwise direction along the toroid, wherein both toroid coils are electrically connected with each other. This coil arrangement is especially suitable for use as a part of an electronic circuit which is positioned within the examination volume of a magnetic resonance imaging system, because the net axial magnetic field of this coil arrangement is substantially reduced so that disturbing interferences with the functioning of the MRI system, especially with the MR image generation, are accordingly decreased or prevented.

Abstract translation: 公开了一种环形线圈装置，其包括具有沿着环形线沿逆时针方向前进的第一组绕组（10,11,12,13）的第一环形线圈和具有第二组绕组（20）的第二环形线圈 ，21,22,23），其沿着环形线顺时针方向前进，其中两个环形线圈彼此电连接。 该线圈装置特别适合用作位于磁共振成像系统的检查体积内的电子电路的一部分，因为该线圈装置的净轴向磁场大大减小，使得与功能的干扰性 相应地降低或防止MRI系统，特别是MR图像生成。

公开(公告)号：WO2007113745A1

公开(公告)日：2007-10-11

申请号：PCT/IB2007/051106

申请日：2007-03-29

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  BREMER, Petrus, J. ,  DE RIJCK, Alexander, C. ,  ETTES, Wilhelmus

Inventor： BREMER, Petrus, J. ,  DE RIJCK, Alexander, C. ,  ETTES, Wilhelmus

IPC: H05B41/392

CPC classification number: H05B41/3927

Abstract: A method for driving a lamp with a variable duty cycle in a timing relationship with an input image signal (Si) comprises the steps of: receiving the image signal having a predetermined frame period (t3-tl); generating a high-frequency inverter signal (Sv); based on the received image signal, generating a dimming command signal (Sdcc) determining a target ON time (tl) for the lamp and determining a target OFF time (t2) for the lamp, such that the duty cycle (Δ=(t2-tl)/(t3-tl)) has a desired value; on the basis of the target ON time, determining an adapted ON time (ti l) coinciding with a first predetermined phase of the high-frequency inverter signal; on the basis of the target OFF time, determining an adapted OFF time (tl2) coinciding with a second predetermined phase of the inverter signal; switching the lamp ON at the adapted ON time and switching the lamp OFF at the adapted OFF time.

Abstract translation: 一种用于以与输入图像信号（Si）定时关系的可变占空比驱动灯的方法包括以下步骤：接收具有预定帧周期（t3-t1）的图像信号; 产生高频反相信号（Sv）; 基于接收到的图像信号，生成确定灯的目标导通时间（t1）的调光命令信号（Sdcc），并确定灯的目标关闭时间（t2），使得占空比（θ=（t2- t1）/（t3-t1））具有期望值; 基于所述目标接通时间，确定与所述高频逆变器信号的第一预定相位一致的适配导通时间（ti 1）; 基于所述目标OFF时间，确定与所述逆变器信号的第二预定相位一致的适配OFF时间（tl2）; 在适配的ON时间将灯开关置于ON位置，并在适当的OFF时间将灯关闭。

公开(公告)号：WO2009104116A1

公开(公告)日：2009-08-27

申请号：PCT/IB2009/050594

申请日：2009-02-13

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik ,  WEISSLER, Bjoern

Inventor： DE RIJCK, Alexander, C. ,  HUISMAN, Hendrik ,  WEISSLER, Bjoern

IPC: G01R33/36

CPC classification number: G01R33/3621

Abstract: A magnetic resonance imaging (MRI) apparatus is disclosed. The apparatus has also a switched-mode power supply which is operable at a switching frequency, wherein the switching frequency is adjustable within a given switching frequency interval. The apparatus further comprises a control unit which is adapted to determine a frequency value within the given switching frequency interval so that higher harmonics of the frequency value are outside of a frequency band used for the detection of MR signals. The control unit is further adapted to set the switching frequency of the switched-mode power supply to the determined frequency value, wherein the control unit employs for the determination of the frequency value information about the frequency band of the MR signals.

Abstract translation: 公开了磁共振成像（MRI）装置。 该装置还具有可切换频率操作的开关模式电源，其中开关频率在给定的开关频率间隔内是可调节的。 该装置还包括控制单元，其适于确定在给定开关频率间隔内的频率值，使得频率值的较高谐波在用于检测MR信号的频带之外。 控制单元还适于将开关模式电源的开关频率设置为所确定的频率值，其中控制单元用于确定关于MR信号的频带的频率值信息。

公开(公告)号：WO2008056321A1

公开(公告)日：2008-05-15

申请号：PCT/IB2007/054494

申请日：2007-11-06

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  DE RIJCK, Alexander, C. ,  VAN WOUDENBERG, Roel ,  PEETERS, Henricus, M. ,  DEURENBERG, Peter, H., F.

Inventor： DE RIJCK, Alexander, C. ,  VAN WOUDENBERG, Roel ,  PEETERS, Henricus, M. ,  DEURENBERG, Peter, H., F.

IPC: H05B33/08

CPC classification number: H05B33/0872 ,  G09G3/3413 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/0693 ,  H05B33/0818 ,  H05B33/0863 ,  H05B33/0869

Abstract: The present invention relates to a method for determining drive values for driving a lighting device at a desired brightness and color. The method comprising the steps of determining a first luminous flux weight ratio based on the desired color and a first drive current for driving each of the differently colored LEDs, determining a first luminous flux for each of the differently colored LEDs based on the desired brightness and the first luminous flux weight ratio, comparing, for each of the differently colored LEDs, the first luminous flux with a nominal luminous flux for a plurality of different drive currents, selecting, for each of the differently colored LEDs, a preferred drive current that at least can produce the first luminous flux, determining a second luminous flux weight ratio based on the desired color and the selected drive currents for each of the differently colored LEDs, determining a second luminous flux for each of the differently colored LEDs based on the desired brightness and the second luminous flux weight ratio, and determining a duty cycle for each of the differently colored LEDs at the selected drive currents, wherein the selected currents at the determined duty cycles produces the second luminous flux for each of the differently colored LEDs. The present invention provides for the possibility to limit the number of necessary computational steps for determining preferred drive currents. Furthermore, an increase in number of current level and/or differently colored LEDs would only slightly increase the computational cost.

Abstract translation: 本发明涉及一种确定用于以期望的亮度和颜色驱动照明装置的驱动值的方法。 该方法包括以下步骤：基于期望的颜色确定第一光通量重量比;以及第一驱动电流，用于驱动每个不同颜色的LED，基于期望的亮度确定每个不同颜色的LED的第一光通量，以及 第一光通量重量比，对于每个不同颜色的LED，比较用于多个不同驱动电流的具有标称光通量的第一光通量，为每个不同颜色的LED选择优选的驱动电流， 至少可以产生第一光通量，基于期望的颜色确定第二光通量重量比，以及为每种不同颜色的LED确定所选择的驱动电流，基于期望的亮度确定每个不同颜色的LED的第二光通量 和第二光束重量比，以及确定所选择的每个不同颜色的LED的占空比 驱动电流，其中在所确定的占空比下的所选择的电流为不同颜色的LED中的每一个产生第二光通量。 本发明提供了限制用于确定优选驱动电流的必要计算步骤的数量的可能性。 此外，当前水平和/或不同颜色的LED的数量的增加将仅略微增加计算成本。