Patents by Inventor Franciscus P. M. Budzelaar

Franciscus P. M. Budzelaar 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).

  • Patent number: 8497819
    Abstract: In an active matrix electroluminescent display, a plurality of rows of pixels are illuminated, defining at least two bands of rows separated by a non-illuminated band. The bands of rows of pixels scroll in the column direction over time, and at most 75% of the rows are illuminated at any point in time. This method is in essence a double bar scrolling method. By scrolling two bars, the required peak brightness is reduced as the effective overall duty cycle is increased. However, the period of illumination can still remain short, so that motion perception remains improved. The scrolling speed can be halved for the same frame rate or else the frame rate can be increased to reduce flicker.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: July 30, 2013
    Assignee: Koninklijke Electronics N.V.
    Inventors: Jurgen J. L. Hoppenbrouwers, Franciscus P. M. Budzelaar, Nijs C. Van Der Vaart
  • Publication number: 20120059444
    Abstract: A system (102) comprising a box (104) for implanting in a mamMal body part (106), which box is provided with a first electrical contact (110, 121, 114, 116, 118, 120), and a module (108) for accommodating in the box, which module is provided with a second electrical contact (122, 124, 126) for cooperation with said first electrical contact. The first electrical contact and the second electrical contact are mutually movable, at least in a stationary accommodation of the module in the box, between a contact position in which said first and second electrical contacts are electrically connected, and a non-contact position in which said first and second electrical contacts are separated from each other.
    Type: Application
    Filed: April 21, 2010
    Publication date: March 8, 2012
    Applicant: SAPIENS STEERING BRAIN STIMULATION B.V.
    Inventors: Michel G. Pardoel, Michel M.J. Decre, Hubert C.F. Martens, Franciscus P.M. Budzelaar, Jozef F.E. Gootzen, Jeroen J.A. Tol
  • Patent number: 7916099
    Abstract: An active matrix electroluminescent display has means for interrupting the drive of current through the display element. Row driver circuitry for the display has a shift register and logic arrangement (50, 54) for generating the drive voltage for the interrupting means, and which includes a pulse having a duration which can be varied up to substantially the full field period less the address period. The signal or signals propagated through the shift register arrangement (50) control the pulse duration. This arrangement provides reduced driver complexity to allow control for the row by row addressing of the pixels with control of the overall light emission period of each row. The control enables a scrolling addressing scheme to be implemented.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: March 29, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: William A. Steer, David A. Fish, Franciscus P. M. Budzelaar
  • Publication number: 20100289833
    Abstract: A backlight control system for controlling a backlight of a display. The display (100) comprises a transmissive display panel (102) and a backlight (104) for providing an illumination to a backside (108) of the display panel. The backlight comprises light sources (110) positioned at light source positions for providing illumination to the backside of the display panel. The system comprises a drive value generator (106) for providing light source drive values (112) for causing the backlight profile to gradually descend around a high luminance portion of the display at a rate that is independent of a position of the high luminance portion with respect to the light source positions. The high luminance portion of the display has a higher luminance than an area around the high luminance portion of the display. The system allows to prevent a disturbing perception of backlight structure and halo.
    Type: Application
    Filed: July 1, 2008
    Publication date: November 18, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Franciscus P.M. Budzelaar, Ardjan Dommisse
  • Patent number: 7791565
    Abstract: A color electroluminescent, EL, display device comprising an array of pixels (11) each comprising sub-pixels (1) of two or more colors (R, G, B). For at least one of the colors (R, G, B), the pixel (11) comprises a first sub-pixel (RL, GL, BL) comprising a first EL material and a second sub-pixel (Rc, Gc, Bc) comprising a second EL material. The first EL material is of higher lifetime than the second EL material; the second EL material has better color points and/or better color rendition properties than the first EL material. In some embodiments a pixel comprises two red sub-pixels (RL, Rc), two green subpixels (GL, Gc) and two blue sub-pixels (BL, Bc), one sub-pixel of each color (RL, GL, BL) comprising relatively high lifetime EL material and the other sub pixel of each color (Rc, Gc, Bc) comprising relatively good color points EL material. In other embodiments a pixel comprises two blue sub-pixels (BL, Bc) but only one red sub-pixel and one green sub-pixel.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: September 7, 2010
    Assignee: TPO Hong Kong Holding Limited
    Inventors: David A. Fish, Mark J. Childs, Nijs C. Van Der Vaart, Jurgen J. L. Hoppenbrouwers, Roel Van Woudenberg, Franciscus P. M. Budzelaar
  • Publication number: 20080203930
    Abstract: An active matrix display device comprises an array of display pixels provided over a common substrate. Each pixel has a voltage-programmed current source circuit, a drive transistor and a light sensitive device for sensing the display element light output. The light sensitive device provides a current dependent on the display element output, and the light sensitive device and the current source circuit define a feedback control loop which controls the voltage provided to the gate of the drive transistor. This pixel circuit uses a current source circuit to provide a gate voltage to a drive transistor. This enables the current source circuit to operate at low current levels, and therefore under low voltage stress.
    Type: Application
    Filed: May 16, 2006
    Publication date: August 28, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Franciscus P.M. Budzelaar, Martin Hiddink, David A. Fish, Mark J. Childs
  • Patent number: 6252567
    Abstract: In a multiple-output digital to analog converter, digital input data (Dd) is converted into a plurality of analog output voltages (Voi) across associated loads (Li). A timing generator (TG) generates time periods (Ti1) in dependence on the digital input data (Dd). A buffer (B1) has an output (O1) to supply a waveform (WF1) to the loads (Li) via a coupling circuit (S1i). The coupling circuit (S1i) couples a certain load (Li) to the buffer output (B1) during an associated time period (Ti1). The output voltage (Voi) across the certain load (Li) is related to a value of the waveform (Wf1) at the end of the associated time period (Ti1) when the coupling circuit decouples the load (Li) from the buffer output (O1). The multiple-output digital to analog converter further comprises a plurality of dummy loads (Ldi), each one of the dummy loads (Ldi) is associated to a corresponding one of the loads (Li).
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: June 26, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Franciscus P. M. Budzelaar