公开(公告)号：DE602006008616D1

公开(公告)日：2009-10-01

申请号：DE602006008616

申请日：2006-06-19

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

Inventor： DEPPE CARSTEN ,  MOENCH HOLGER ,  POLLMANN-RETSCH ,  MUNTERS TOM ,  VAN DEN BERGH JOHN-JOHN PIETER

IPC: H05B41/26

Abstract: The invention describes a method of shutting down a high pressure discharge lamp (1) in which a pair of electrodes (2) are disposed in an arc tube (3). This method comprises the steps of reducing the lamp power (PA) to a reduced operation level that enables the maintenance of an arc discharge between the electrodes (2) in a transition state from a lighting state to an extinguished state; driving the lamp (1) at the reduced operation level such that that the lamp (1) cools down; monitoring the lamp voltage (U) during this lamp power reduction process and during driving of the lamp (1) at the reduced operation level with regard to a defined discharge process stability criteria and increasing the lamp power (PA) if the discharge process stability criterion is not satisfied; completely shutting down the lamp power (PA) after sufficient duration to allow the lamp (1) to cool down to a state in which the gas pressure is such that the lamp (1) could be reignited shortly after being extinguished. Moreover the invention describes an appropriate driving unit (7) for driving a high pressure discharge lamp (1) and an image rendering system (40), particularly a projector system, comprising such a driving unit (4).

公开(公告)号：DE60320411T2

公开(公告)日：2009-06-04

申请号：DE60320411

申请日：2003-06-16

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： MOENCH HOLGER ,  RIEDERER XAVER ,  DEPPE CARSTEN ,  LUERKENS PETER

IPC: H05B41/24 ,  H05B41/292

公开(公告)号：DE10244821A1

公开(公告)日：2004-04-01

申请号：DE10244821

申请日：2002-09-26

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： DEPPE CARSTEN ,  LUERKENS PETER ,  MOENCH HOLGER

IPC: H04N9/31 ,  H05B41/288 ,  H05B41/292 ,  G03B21/00

Abstract: A projection system for image reproduction includes at least one lamp and sensor for generating a sensor signal for monitoring changes in the luminous flux generated by the lamp and for compensating these changes through a suitable control of the image reproduction. The projection system further includes a device for eliminating substantially periodic interference components from the sensor signal generated by the sensor. These interference components may be generated by an optical component such as a color modulator of the projection system. The projection system provides substantially interference-free compensation of fluctuations in the luminous flux generated by the lamp, for example, owing to an unstable arc discharge. Further, the positioning of the sensor in the projection system may not be critical.

公开(公告)号：AU2002356382A1

公开(公告)日：2003-07-15

申请号：AU2002356382

申请日：2002-12-18

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LURKENS PETER ,  DEPPE CARSTEN ,  RIEDERER XAVER

IPC: G03B21/00 ,  G09G3/20 ,  H04N5/74 ,  H05B41/292 ,  H05B41/38 ,  H05B41/392 ,  H05B41/39

Abstract: 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.

公开(公告)号：DE602006013483D1

公开(公告)日：2010-05-20

申请号：DE602006013483

申请日：2006-09-12

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

Inventor： DEPPE CARSTEN ,  HATTRUP CHRISTIAN

IPC: H03K7/08 ,  H02M3/137

Abstract: Generating an output pulse signal (Y), which has an output signal period (Ty), which is divided by a magnitude transition into a leading part (LP) and a trailing part (TP). During each output signal period (Ty) altering means (27 to 36) determine in a coarse and fine way a duration (TLP, TTP) of one or both of said output signal period parts (LP, TP) by using a clock signal (Cx) of different clock cycle durations (TCx0, TCx1, TCx2), dependent on a value of a first digital number (D1) and a value of second, less significant digital number (D3, D5), respectively.

公开(公告)号：DE60231150D1

公开(公告)日：2009-03-26

申请号：DE60231150

申请日：2002-12-18

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LUERKENS PETER ,  DEPPE CARSTEN ,  RIEDERER XAVER

IPC: H04N5/74 ,  H05B41/292 ,  H05B41/38 ,  H05B41/39 ,  H05B41/392

公开(公告)号：DE60305896D1

公开(公告)日：2006-07-20

申请号：DE60305896

申请日：2003-03-03

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： VOLLMER THOMAS ,  DUERBAUM THOMAS ,  DEPPE CARSTEN

IPC: H04B3/58 ,  H04B3/54 ,  H04L12/28 ,  H04L12/46 ,  H04L12/66 ,  H04L29/06

Abstract: The invention relates to a method and a device ( 1 ) for data transmission in a power supply network (power line communication). The device ( 1 ), preferably centrally located in a distribution box ( 6 ), is equipped with transceivers ( 3, 4, 5 ), each one of which is connected to a phasing line ( 11, 12, 13 ) of the power supply network, from which it can receive data, and to which it can transmit data. The transceivers are coupled via a control unit ( 2 ), wherein the control unit ensures that the data received from a phasing line can be transmitted, prepared, on at least one other phasing line. Hereby, a re-transmission on all phasing lines with the same transmission power, or a re-transmission matched to the particular signal strengths or the addressees of the data, can take place.

公开(公告)号：AU2003209949A1

公开(公告)日：2003-10-13

申请号：AU2003209949

申请日：2003-03-24

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LURKENS PETER ,  DEPPE CARSTEN

IPC: G03B21/14 ,  G09G3/20 ,  G09G3/34 ,  G09G3/36 ,  H04N9/31

公开(公告)号：AU2003207377A8

公开(公告)日：2003-09-09

申请号：AU2003207377

申请日：2003-02-21

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： DEPPE CARSTEN ,  DURBAUM THOMAS ,  LOEF CHRISTOPH

IPC: H02M3/28 ,  H02M1/12 ,  H02M1/00 ,  H02M3/335

Abstract: In the case of known switched-mode power supplies with integrated preconditioner, the control curves are largely congruent, but deviate from one another in low-load operation, whereby the unregulated intermediate circuit voltage increases. To improve efficiency in low-load operation, closed-loop control of the burst cycle is effected on the primary side of the voltage transformer. The intermediate circuit voltage is limited to a permissible limit value. The closed-loop control device in the switching stage taps the intermediate circuit voltage at a voltage divider which is arranged between the preconditioner functional unit and the switching stage. An assembly additionally monitors the output voltage, for example by means of an optocoupler. Burst mode comprises one or more burst cycles. A burst cycle is started when the intermediate circuit voltage reaches its limit value. At this time, the voltage transformer is switched off. A burst cycle ends when the output voltage reaches a minimum value. At this time at the latest, the voltage transformer is switched on again. Burst mode is terminated again either when the switched-mode power supply is again operated under normal load or when a maximum time has elapsed, measured from the start of burst mode.

公开(公告)号：AU2003207377A1

公开(公告)日：2003-09-09

申请号：AU2003207377

申请日：2003-02-21

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LOEF CHRISTOPH ,  DEPPE CARSTEN ,  DURBAUM THOMAS

IPC: H02M3/28 ,  H02M1/12 ,  H02M1/00

Abstract: In the case of known switched-mode power supplies with integrated preconditioner, the control curves are largely congruent, but deviate from one another in low-load operation, whereby the unregulated intermediate circuit voltage increases. To improve efficiency in low-load operation, closed-loop control of the burst cycle is effected on the primary side of the voltage transformer. The intermediate circuit voltage is limited to a permissible limit value. The closed-loop control device in the switching stage taps the intermediate circuit voltage at a voltage divider which is arranged between the preconditioner functional unit and the switching stage. An assembly additionally monitors the output voltage, for example by means of an optocoupler. Burst mode comprises one or more burst cycles. A burst cycle is started when the intermediate circuit voltage reaches its limit value. At this time, the voltage transformer is switched off. A burst cycle ends when the output voltage reaches a minimum value. At this time at the latest, the voltage transformer is switched on again. Burst mode is terminated again either when the switched-mode power supply is again operated under normal load or when a maximum time has elapsed, measured from the start of burst mode.