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    • 3. 发明申请
    • IMAGE PROJECTOR AND METHOD OF OPERATING SAME
    • 图像投影仪及其操作方法
    • WO2003056817A1
    • 2003-07-10
    • PCT/IB2002/005745
    • 2002-12-18
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.LÜRKENS, PeterDEPPE, CarstenRIEDERER, Xaver
    • LÜRKENS, PeterDEPPE, CarstenRIEDERER, Xaver
    • H04N5/74
    • H05B41/38H05B41/2928H05B41/392
    • The invention relates to an image projector with a High-Intensity-Discharge HID lamp (112) and a method of operating it. Such lamps have the disadvantage that their voltaic arc jumps back and forth between different positions at unforeseeable times during operation. This so-called arc jumping has the effect of changing the brightness, i.e. the overall brightness and / or the brightness distribution of the light emitted by the HID lamp (112). For the viewer of an image projected with such a projector, this effect appears as a jolt of this projected image. To avoid such effects for the viewer, it is first proposed according to the invention that changes in the brightness of the light in the image projector's beam path are detected. As soon as a change in brightness caused by an arc jump has been detected, this brightness is reset to a brightness detected at a moment t-2 before the arc jump, in order subsequently to convert it during a predetermined time interval T to the brightness resulting from the arc jump. This resetting must occur so soon after the arc jump, and the conversion so slowly, that the changes in the brightness of the light incident on a picture screen device (118) resulting from the arc jump, the reset, and the conversion are not perceptible to the human eye.
    • 本发明涉及具有高强度放电HID灯(112)的图像投影仪及其操作方法。 这样的灯具有这样的缺点:它们的电弧在操作期间在不可预见的时间在不同位置之间来回跳动。 这种所谓的电弧跳跃具有改变由HID灯(112)发射的光的亮度,即整体亮度和/或亮度分布的效果。 对于使用这种投影机投影的图像的观看者,此效果显示为该投影图像的颠簸。 为了避免对于观看者的这种影响,首先提出根据本发明,检测到图像投影仪的光束路径中的光的亮度的变化。 一旦检测到由电弧跳跃引起的亮度变化,则该亮度被重置为在电弧跳跃之前的时刻t-2处检测到的亮度,以便随后在预定时间间隔T期间将其转换为亮度 导致电弧跳跃。 这种复位必须在电弧跳跃之后不久就发生,并且转换如此缓慢,使得由于电弧跳跃,复位和转换而导致的图像屏幕设备(118)的光的亮度变化是不可察觉的 到人眼。
    • 8. 发明申请
    • BLEEDER CIRCUIT
    • BLEEDER电路
    • WO2011013060A2
    • 2011-02-03
    • PCT/IB2010/053393
    • 2010-07-27
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHDEPPE, CarstenSAUERLAENDER, Georg
    • DEPPE, CarstenSAUERLAENDER, Georg
    • H05B33/08
    • H05B33/0815
    • Bleeder circuits (1) for combinations of phase cutting dimmers (2) and light emitting diode circuits (3) comprise active circuitry (4) to increase a number of options. The active circuitry (4) may comprise a current limiting circuit (5) for limiting a current flowing through the bleeder circuit (1). The active circuitry (4) may comprise a voltage detecting circuit (6) for activating or deactivating,in response to a detection result,the current limiting circuit (5) and may comprise control circuitry such as a micro processor circuit (7) for controlling the current limiting circuit (5) and may comprise a control circuit (9) for using information derived from a current flowing through the light emitting diode circuit (3) for controlling the current limiting circuit (5) and for controlling at least a part of the light emitting diode circuit (3) that comprises anti- parallel light emitting diodes (31-32) or serial and/or parallel light emitting diodes (33- 36).
    • 用于相切切换调光器(2)和发光二极管电路(3)的组合的泄放电路(1)包括增加若干选项的有源电路(4)。 有源电路(4)可以包括用于限制流过泄放电路(1)的电流的限流电路(5)。 有源电路(4)可以包括电压检测电路(6),用于响应于检测结果而激活或去激活电流限制电路(5),并且可以包括控制电路,例如微处理器电路(7),用于控制 (5)并且可以包括控制电路(9),用于使用从流经发光二极管电路(3)的电流获得的信息来控制限流电路(5)并且用于控制至少一部分 包括反平行发光二极管(31-32)或串联和/或平行发光二极管(33-36)的发光二极管电路(3)。
    • 10. 发明申请
    • METHOD AND DRIVING UNIT FOR DRIVING A GAS DISCHARGE LAMP
    • 用于驱动气体放电灯的方法和驱动单元
    • WO2007096803A1
    • 2007-08-30
    • PCT/IB2007/050427
    • 2007-02-09
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.DEPPE, CarstenVAN ESVELD, Hendrik AntonTOLLE, Tobias Georg
    • DEPPE, CarstenVAN ESVELD, Hendrik AntonTOLLE, Tobias Georg
    • H05B41/288H05B41/392
    • H05B41/2882H05B41/2926H05B41/384H05B41/3928Y02B20/202Y02B20/206
    • This invention describes a method for driving a gas discharge lamp (1), whereby an alternating voltage (U) is applied to the gas discharge lamp (1), the alternating voltage (U) having a first polarity during a first time interval (tfl, tsl) and a second polarity opposite to the first polarity during a second time interval (tf2, ts2). In this method, the first time interval (tfl) and the second time interval (tf2) are repeated alternately during a first operation mode. During a second operation mode, the electrical power (P) being provided to the gas discharge lamp (1) is smaller compared to the first operation mode, and the first time interval (tsl) and the second time interval (ts2) are repeated alternately, whereby in this second operation mode the duration of the first time interval (tsl) is at least a multiple of the duration of the second time interval (ts2). Furthermore, the invention describes an appropriate driving unit (4) for driving a gas discharge lamp (1), and an image rendering system, particularly a projector system, comprising a gas discharge lamp (1) and such a driving unit (4).
    • 本发明描述了一种用于驱动气体放电灯(1)的方法,由此在气体放电灯(1)中施加交流电压(U),在第一时间间隔期间具有第一极性的交流电压(U)(tfl ,tsl)和在第二时间间隔(tf2,ts2)期间与第一极性相反的第二极性。 在该方法中,在第一操作模式期间交替重复第一时间间隔(tfl)和第二时间间隔(tf2)。 在第二操作模式中,与第一操作模式相比,提供给气体放电灯(1)的电功率(P)更小,并且交替地重复第一时间间隔(tsl)和第二时间间隔(ts2) ,由此在该第二操作模式中,第一时间间隔(tsl)的持续时间至少为第二时间间隔(ts2)的持续时间的倍数。 此外,本发明描述了用于驱动气体放电灯(1)的合适的驱动单元(4),以及包括气体放电灯(1)和这种驱动单元(4)的图像渲染系统,特别是投影仪系统。