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    • 1. 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
    • IMAGE PROJECTOR WITH LIGHT SOURCE MODULATION ACCORDING TO IMAGE SIGNAL
    • 具有根据图像信号的光源调制的图像投影仪
    • WO2003084245A1
    • 2003-10-09
    • PCT/IB2003/001120
    • 2003-03-24
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.LÜRKENS, PeterDEPPE, Carsten
    • LÜRKENS, PeterDEPPE, Carsten
    • H04N9/31
    • H04N9/3117
    • The invention relates to a method for enhancing brightness and contrast in images provided by a projection-based presenter utilising a display panel (5) illuminated by at least one scrolling band of light and a lamp (3) as a light source for said at least one scrolling band of light. In order to enable such an enhancement, it is proposed that the method comprises modulating the light output of the lamp (3) between different scrolling positions in a way that a higher light intensity is supplied by said lamp (3) when parts of the display panel (5) currently representing brighter parts of a respective image are illuminated by said at least one scrolling band of light than when parts of the display panel (5) currently representing less bright parts of said image are illuminated by said at least one scrolling band of light. The invention relates equally to a corresponding projector, and to an image processor and a regulation and controlling system for such a projector.
    • 本发明涉及一种用于增强由基于投影的呈现者所提供的图像中的亮度和对比度的方法,该投影仪使用由至少一个滚动带光照射的显示面板(5)和作为所述至少一个的光源的灯(3) 一个滚动的光带。 为了实现这样的增强,提出了该方法包括在不同的滚动位置之间调制灯(3)的光输出,使得当显示器的部分时,所述灯(3)提供较高的光强度 目前表示相应图像的更亮部分的面板(5)被所述至少一个滚动光带照亮,而不是当前表示所述图像的较亮部分的显示面板(5)的部分被所述至少一个滚动带 的光。 本发明同样涉及相应的投影仪,以及涉及这种投影仪的图像处理器和调节和控制系统。
    • 10. 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)。