Patents by Inventor Carsten Deppe

Carsten Deppe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080273179
    Abstract: A method for operating a projection system (1) is described, wherein a brightness level (B1, B2, B3, B4, B5, B6) in an image (IM) is represented by the total length of a number of light switch-on phases within a particular image cycle (VT). A high pressure discharge lamp (2) of the projection system (1) is operated via a lamp driver with an essentially square-wave alternating current (IL) SO that an overshoot sequence (O), which occurs in the alternating current (IL) after a current zero crossing during operation of the high pressure discharge lamp (2), has a frequency so high that for each possible brightness level at least one full period (P) of the overshoot sequence (O) lies essentially within a light switch-on or switch-off phase (ts) following the zero crossing. A projection system (1) and a lamp driver (10) for a high pressure discharge lamp (2) in such a projection system (1) are also described.
    Type: Application
    Filed: April 21, 2006
    Publication date: November 6, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Carsten Deppe, Tom Munters, Christofher Daniel Charles Hooijer, Hans Feijen, Sander Habets
  • Patent number: 7444530
    Abstract: The invention relates to a standby circuit, an electrical device with a standby circuit, a method for the control of the electrical device and a power supply assembly. Whereas the power supply unit and the control electronics are in permanent operation when conventional devices are in the standby mode and consequently have a high power consumption, the invention proposes a solution for saving energy while retaining convenience of operation by which the power supply unit is switched off in the standby mode. A standby circuit, preferably fed by an energy buffer element, remains active in the standby mode and monitors signal inputs for activation events. When an activation event occurs, the standby circuit switches on the power supply unit.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: October 28, 2008
    Assignee: NXP B.V.
    Inventors: Carsten Deppe, Peter Luerkens, Thomas Duerbaum, Matthias Wendt, Christoph Loef, Georg Sauerlaender
  • Publication number: 20080258638
    Abstract: A description is given of a method and a circuit arrangement for operating a high-pressure gas discharge lamp with a lamp current superposed with first current pulses, in particular in a system for the time-sequential production of (primary) colors and possibly white segments, from which an image to be displayed is synthesized, in which, in order to change or correct color and/or brightness properties of the image, the first current pulses are adjusted with regard to their amplitude and/or temporal length and/or temporal position relative to the production of the colors and/or white segments. A description is also given of a projection system comprising such a circuit arrangement.
    Type: Application
    Filed: June 3, 2005
    Publication date: October 23, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Carsten Deppe, Holger Monch
  • Publication number: 20080259020
    Abstract: A scanning backlight unit (BU) for a matrix display comprises a plurality of light sources (L1, . . . , Ln). A driver (2) supplies drive signals (D1, . . . , Dn) to the light sources (L1, . . . , Ln). A controller (3) controls the driver (2) to separately activate the light sources (L1, . . . , Ln) to obtain light-emitting regions (5) being active. A light sensor (4) is associated with a group of at least two of the light sources (L1, . . . , Ln) to supply a sensor signal (SES) which indicates a luminance (LU) of the group. The controller (3) reads the sensor signal (SES) at different instants (ts1, . . . , tsn) at which mutually different subsets of the light sources (L1, . . . , Ln) of the group are active to control the driver (2) to supply power levels to the light sources (L1, . . . , Ln) of the group to obtain a luminance (LU1, . . . , LUn) of each one of the light sources (L1, . . . , Ln) of the group in dependence on the sensor signal (SES).
    Type: Application
    Filed: May 9, 2005
    Publication date: October 23, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Nebojsa Fisekovic, Jeroen Hubert Christoffel Jacobus Stessen, Franciscus Johannes Stommels, Carsten Deppe, Ulrich Boeke, Peter Luerkens
  • Publication number: 20080252351
    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.
    Type: Application
    Filed: September 12, 2006
    Publication date: October 16, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Carsten Deppe, Christian Hattrup
  • Publication number: 20080246926
    Abstract: There is described a method for operating a high-intensity discharge lamp (2), in which the high-intensity discharge lamp (2) is acted upon by an AC current (I) which commutates between positive pulses (Ip) and negative pulses (In) with a predefined current amplitude (IA), wherein a pulse width ratio between the pulse width of a positive pulse (Ip) and the pulse width of an adjacent negative pulse (In) is modulated in such a way that the mean current value (I) of two successive positive and negative pulses (Ip, In) fluctuates periodically between positive and negative values. In addition, the value of the current amplitude (IA) is modulated in accordance with a predefined modulation function (M). A description is also given of a corresponding lamp driver (10) for a high-intensity discharge lamp (2) and of a projection system (1) comprising such a lamp driver (10).
    Type: Application
    Filed: September 1, 2006
    Publication date: October 9, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventor: Carsten Deppe
  • Publication number: 20080203939
    Abstract: The invention relates to a method and an arrangement (10) for monitoring a gas discharge lamp (22), comprising a control circuit (18) for detecting an electrical measured value assigned to the lamp voltage. The control circuit (18) is provided for detecting one voltage value prior to a change in current and a second voltage value after a change in current, or a setting time, and for producing a control signal which depends on the difference in the voltage values or on the setting time. In this way, a pressure within the lamp is monitored and a control signal can be produced which can be used to cool the lamp or to switch the lamp off. This methods detects inflation and therefore prevents an explosion of the lamp.
    Type: Application
    Filed: October 17, 2005
    Publication date: August 28, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Pavel Pekarski, Carsten Deppe
  • Publication number: 20080203823
    Abstract: The invention relates to an arrangement for converting mechanical energy into electrical energy comprising a piezo-electric auxiliary generator producing an auxiliary voltage and a main generator which is coupled mechanically with the auxiliary generator and producing the electrical energy.
    Type: Application
    Filed: April 21, 2006
    Publication date: August 28, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.
    Inventors: Carsten Deppe, Thomas Durbaum
  • Patent number: 7355352
    Abstract: A circuit and a method for operation of a gas discharge lamp includes a switching transformer having a switch, a converter, inductor and a controller in a control loop for measuring a lamp voltage and setting a desired power. The switching transformer further includes a second control loop used for adjusting the switching transformer to individual lamp conditions.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: April 8, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Carsten Deppe, Peter Lürkens, Gero Heusler
  • Publication number: 20080054814
    Abstract: The invention relates to a circuit (2) comprising at least two parallel-connected light-emitting diodes (4, 5) opposite poled in a first parallel branch (12) and comprising at least two parallel-connected light-emitting diodes (6, 7) opposite poled in a second parallel branch (13), and also comprising a capacitor (8) and a coil (9). According to the invention, the first parallel branch (12) has a capacitor (8) and the second parallel branch (13) has the coil (9). On account of the capacitive parallel branch (10) and the inductive parallel branch (11), idle currents arise which are phase-shifted with respect to one another. The idle currents compensate one another and light changes of the oppositely-poled diode pairs take place at different points in time. A light current is thun smoothed.
    Type: Application
    Filed: June 3, 2005
    Publication date: March 6, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Carsten Deppe, Matthias Wendt
  • Patent number: 7329009
    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.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: February 12, 2008
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Holger Mönch, Peter Lürkens, Carsten Deppe, Winston Donald Couwenberg, Johannis Antonie Toonen, Roy Hendrik Zundert
  • Patent number: 7327096
    Abstract: The invention relates to a method for operating a discharge lamp 11 including two electrodes 12,13. The method comprises applying to the electrodes an alternating current ILamp. In order to improve the performance of the lamp and to increase the life time of the lamp, it is proposed that the alternating current has a direct current component DC for compensating a temperature difference between the two electrodes. The direct current component is selected more specifically such that a first electrode, which is expected to have a lower temperature than the second electrode, functions as anode for the direct current component, while the second electrode functions as cathode for the direct current component. The invention relates equally to an electronic circuit and to a software program for operating a discharge lamp correspondingly, as well as to a lighting system comprising a discharge lamp and means for operating this discharge lamp correspondingly.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: February 5, 2008
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Holger Mönch, Xaver Riederer, Carsten Deppe, Peter Lürkens
  • Patent number: 7316483
    Abstract: The invention relates to a method of representing a video image based on a video signal by means of a projector which comprises an image display device and a high-pressure gas discharge lamp, which lamp is supplied with a square-wave alternating current (I0, I10) on which a current pulse (P1, P3, P10, P40) is superimposed before each phase reversal. According to the invention, the alternating current (I0, I10) is superimposed with a second current pulse (P2, P4, P20, P30, P50, P60) of the same polarity. A simple attunement of the alternating current frequency to the image frequency without image artifacts is made possible by the second pulses (P2, P4, P20, P30, P50, P60).
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 8, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Holger Moench, Carsten Deppe, Xaver Riederer, Eelco Gerben Visser, Nicolaas Hubertina Gerardus Reijnders
  • Patent number: 7285920
    Abstract: A method and a circuit arrangement for the operation of a high-pressure gas discharge lamp (HID [high intensity discharge] lamp or UHP [ultra high performance] lamp) is described, which lamp is particularly suitable for illuminating projection displays with sequential color rendering (for example LCOS or SCR-DMD systems) with a pulsatory lamp current. Artefacts in the color rendering are avoided through the generation of at least one compensation pulse of a given amplitude and a given timing and through superimposition thereof on the lamp current.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: October 23, 2007
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Xaver Riederer, Carsten Deppe, Holger Mönch
  • Publication number: 20070222426
    Abstract: A wireless resonant powering device 1 according to the invention comprises a first inductor winding 3, which is arranged to form a transformer 9 with the inductor winding 13 of the energizable load 11. The first inductor winding 3 is arranged to form a resonant circuit 5, which may comprise a suitable plurality of electric capacitances and coils. The components of the resonant circuit 5 are selected such that the magnetic energy received by the inductor winding 13 damps the energy flow in the resonant circuit so that the induced voltage in the inductor winding 13 is substantially constant and is independent of the magnetic coupling between the first inductor winding 3 and the inductor winding 13 at the operating frequency of the driving means 6. The resonant circuit is driven by the driving means 6, comprising a control unit 6c arranged to induce an alternating voltage between a first semiconductor switch 6a and a second semiconductor switch 6b.
    Type: Application
    Filed: April 28, 2005
    Publication date: September 27, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Eberhard Waffenschmidt, Harald Reiter, Carsten Deppe, Georg Sauerlander, Bernd Ackermann
  • Patent number: 7273284
    Abstract: A projection system for image representation includes a display, a lamp, and a sensor for generating a sensor signal for monitoring and compensating changes in the luminous flux provided by the lamp. To achieve a monitoring of the light quantity actually incident on the display, an optical component is arranged in a light path between the lamp and the display. The optical component allows a first light component to pass through and reflects a second light component such that one of the light components is directed at the display and the other light component is directed at the sensor arranged outside the light path. A sensor signal generated in this manner renders it possible to compensate for fluctuations in the luminous flux provided by the lamp through the control of a lamp driver in an effective.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: September 25, 2007
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Carsten Deppe, Holger Mönch
  • Patent number: 7259363
    Abstract: A control unit (2) of a remote control receiver sets the forward or reverse direction operating mode of the photodiode (1) as a function of the useful signal level of its output signal, and to be precise, during standby, the photovoltaic operating mode (forward mode), since in this mode no external bias current is required. If the useful signal level of the photodiode (1) exceeds a predefined threshold, the reverse mode is set, and this brings with it a higher sensitivity. A series circuit (A) of a number of identical photodiodes DA1 DAn the forward mode allows the realization of a controlled current source (6) having a transistor (T), since the permissible diode voltage (Ud) of the overall arrangement may have n times the value of the operating voltage of an individual photodiode. Thus at the same time the voltage across the individual diodes can be set to a very low value and a favorable operating range for the current source can be set.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: August 21, 2007
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Carsten Deppe, Thomas Dürbaum, Georg Sauerländer
  • Publication number: 20060238141
    Abstract: The invention relates to a circuit (1) and a method for operation of a gas discharge lamp (3) with a switching transformer (2), which switching transformer comprises a switch (22), a converter inductor (24) and a control means (27) in a control loop (33) for measuring a lamp voltage and setting a desired power. In accordance with the invention, the switching transformer (2) comprises a second control loop (80). By means of the second control loop the switching transformer is adjustable to individual lamp conditions.
    Type: Application
    Filed: May 25, 2004
    Publication date: October 26, 2006
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Carsten Deppe, Peter Lurkens, Gero Heusler
  • Patent number: 7103330
    Abstract: The invention describes a method of transmitting information between an information transmitter and an information receiver, the potential difference of which moves in cycles between a minimum value and a maximum value and is situated at the minimum value for regular intervals; having the steps: provision of information over the time interval or determining the time interval in which the potential difference between information transmitter and information receiver assumes its minimum value; closing of a switching means of the information transmitter in relation to an information memory assigned to the information receiver, only within the time interval; and transmission and storage of the information in the information memory.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: September 5, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Carsten Deppe, Thomas Dürbaum, Georg Sauerländer, Peter Lürkens, Tobias Georg Tolle
  • Publication number: 20060145064
    Abstract: A projection system for image display with at least one lamp (1), with at least one sensor (5) for detecting changes in the luminous flux delivered by said at least one lamp (1) and for compensating these changes through a suitable control of the image display and/or the lamp is described. The projection system is remarkable in that a light integrator (3) is provided, into which at least a portion of the light provided by the lamp (1) is coupled in, while the sensor (5) is optically coupled to the light integrator (3) such that it detects the luminous intensity present in the light integrator (3). Since this luminous intensity is very homogeneous because of the multiple reflections and is not influenced by brightness fluctuations caused by an optical component such as, for example, a color modulator (4), a very accurate compensation of changes in the luminous flux generated by the lamp (1) is made possible by the sensor signal.
    Type: Application
    Filed: June 3, 2004
    Publication date: July 6, 2006
    Inventors: Peter Lurkens, Carsten Deppe, Gero Heusler, Holger Monch