Direct Viewed Light Valve Patents (Class 348/795)
  • Patent number: 10533729
    Abstract: A light source may include an LED chip having a light-emitting surface, on which a luminophore layer is arranged. The luminophore layer may include adjacently arranged regions having different luminophores. A lighting device may include at least one light source.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: January 14, 2020
    Assignee: OSRAM GmbH
    Inventor: Krister Bergenek
  • Patent number: 8880360
    Abstract: A combination mirror and media display device assembly is provided. The combination mirror and media display device includes a mirror platform having a media display device viewing area and a media display device coupled to the mirror platform. The media display device is positioned to display images through the media display device viewing area.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: November 4, 2014
    Assignee: Electric Mirror, LLC
    Inventors: James V. Mischel, Jr., James V. Mischel, Sr.
  • Patent number: 8125500
    Abstract: A picture quality when reducing the brightness or the contrast of the picture on a plasma panel shall be improved. For this purpose there is provided a driving apparatus including brightness/contrast control means for receiving video input data for modifying the video levels of the video input data in accordance with external adjustment data and for outputting modified video data. First power measurement means measure a power level of the modified video data and supply a first power level. Second power measurement means measure a power level of the video input data and supply a second power level. Generator means generate a third power level comprised between the first power level and the second power level or equal to the larger one to data processing means. The data processing means calculate the maximum number of sustain pulses per frame applicable to the modified video data on the basis of the third power level and control the display of the modified video data on the plasma display panel.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: February 28, 2012
    Assignee: Thomson Licensing
    Inventors: Cédric Thebault, Carlos Correa, Sébastien Weitbruch
  • Patent number: 8077223
    Abstract: An image recording method for an image recording medium is used in an image display apparatus that changes an image on a light valve and changes quantity of light which is incident on the light valve via a light control element according to an input image signal. The image recording method includes accommodating a range of brightness information which an object to be imaged indicates, in an entire range of brightness information which an image recording apparatus can record in the image recording medium; and recording a light-control control signal for controlling the light control element when an image signal is recorded on the image recording medium. The light control element is generated on the basis of the range of the brightness information uniformly expanded, in synchronization with the image signal.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: December 13, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Toyooka, Shohei Yoshida, Hidehito Iisaka, Hidehiro Akahane
  • Patent number: 8059214
    Abstract: Fluorescent tubes are arranged such that their arrangement spaces gradually become wider in central area than in edge areas, fluorescent tubes located in the vicinity of the central area of an arrangement direction are bent into chevron-shapes such that the central parts of the longitudinal directions of the fluorescent tubes become crests which provide access to a diffusion plate, respective two adjacent fluorescent tubes which are straight tubes are connected to one another, thereby constituting pseudo U-shaped tubes, and an AC power is supplied through terminals lined up along one side of a direct-type backlight device. A reflector plate is bent so as to match with the curvature of the bent fluorescent tubes, and is formed with a protrusion which allows the fluorescent tubes located in the vicinity of the central area of the arrangement direction to be raised so as to protrude toward a diffusion plate.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: November 15, 2011
    Assignee: Funai Electric Co., Ltd.
    Inventor: Masaharu Oka
  • Patent number: 7995098
    Abstract: Systems and methods for measuring spatial and angular performance of a visual display are disclosed herein. In one particular embodiment, for example, a method for measuring spatial and angular performance of a flat panel visual display includes capturing a plurality of image measurements from a visual display at a plurality of different view angles. The method also includes selecting one or more points of interest on the visual display, and calculating tristimulus values (X, Y, Z) for each point of interest at each of the plurality of view angles. The method further includes generating a view angle performance plot for the one or more selected points of interest.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: August 9, 2011
    Assignee: Radiant Imaging, Inc.
    Inventors: Gary Robert Pedeville, Ronald F. Rykowski
  • Patent number: 7583325
    Abstract: Apparatuses and processes for generating images having increased brightness uniformity are disclosed herein.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 1, 2009
    Assignee: InFocus Corporation
    Inventor: Mark D. Peterson
  • Patent number: 7397461
    Abstract: An apparatus for concealing a light emitting video display mounted to a vertical surface by reflecting incident ambient light in mirror-like fashion. The apparatus includes a perimeter structure, which is positioned adjacent to the vertical surface about the video display. The perimeter structure has a front opening for enabling visual access to the video display. A beam-split film is disposed within the front opening, and has the characteristics of partial transmission of the light emitted by the video display and partial reflection of the incident ambient light. A fan is disposed to circulate air adjacent to the video display, and a light baffle is disposed about the perimeter structure for enabling circulation of ambient air through the perimeter structure while preventing the transmission of ambient light into the perimeter structure.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: July 8, 2008
    Inventor: Jonathan W. Graham
  • Patent number: 7391482
    Abstract: An improved multiparameter lighting fixture is provided comprising a base, a yoke, a lamp housing, and a communication port for receiving address and command signals. The lamp housing may be comprised of a lamp, a light valve, and a lens. The lamp, the light valve and the lens may cooperate to project, for example, an ownership image, a fixture identifier image, a time identifier image, a show identifier image, a content identifier image, or an effects identifier image. The lamp, the light valve and the lens may cooperate to produce a first image on a projection surface and a second image may be created from the first image by applying an interactive effect to the first image in response to an image captured by a camera.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: June 24, 2008
    Inventor: Richard S. Belhveau
  • Patent number: 7336322
    Abstract: An image display apparatus includes a second converging unit constructed so that a light flux from part of a first light source or from a separately provided second light source is converged to have a line shape, a spectroscope/deflector unit constructed so that his line-shape light flux is irradiated on a region of the display device different from the region on which a strip-shape light flux from a first converging unit is irradiated, and an image processing unit constructed to control so that the pixels of the region of the display device on which the line-shape light flux is irradiated is turned on and off in accordance with image data being displayed.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: February 26, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Tomoki Kobori, Satoshi Ouchi, Tsuneyuki Nozawa
  • Patent number: 7262818
    Abstract: A video system that performs TV signal decoding, deinterlacing, and de-motion-blurring for progressive scan flat panel display is introduced. The system embeds a frame buffer and a scaler for conducting format and resolution conversions for display panels of different sizes. The output of the scaler is sent to a de-motion-blur processor for reducing the blurriness due to the motion of image objects and the slow response time of flat panel display devices. The de-motion-blur processor gets the motion and noise indication signal from scaler or the pre-frame-buffer video processor. Based on the motion and noise information and the information of temporal difference, the de-motion-blur processor performs over driving for the display panel interface and improves the rising and falling response time of the flat panel display. The decoding, deinterlacing, and de-motion-blur processing share the same frame buffer controller so the entire system can be optimized in cost and performance.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: August 28, 2007
    Assignee: Trumpion Microelectronic Inc.
    Inventors: Chun-Hsiung Chuang, Chien-Hsun Cheng, Shih-Sung Wen, Chi-Chuan Wang
  • Patent number: 7110050
    Abstract: The invention is related to a new kind of plasma display panel control. A known principle for PDP control is based on a combination of sub-field addressing and priming. Within the priming period all the plasma cells of the panel are pre-excited by a strong voltage pulse. This treatment of the cells produces a slight background luminance which is a drawback for picture quality aspects because the achievable contrast is reduced. According to the invention it is proposed to use self-priming sub-fields and refreshing sub-fields instead of this hard priming period. With these concepts it is assured that the cells which ought to be black remain black. Self-priming sub-fields reduce or eliminate the need for priming, thus making dark areas darker, while refreshing sub-fields, can be addressed faster. In practice, the number of refreshing sub-fields in a frame period is higher than the number of the self-priming sub-fields. Therefore, the total addressing time can be reduced with this new technique.
    Type: Grant
    Filed: January 13, 2001
    Date of Patent: September 19, 2006
    Assignee: Thomson Licensing
    Inventors: Carlos Correa, Sébastien Weitbruch, Rainer Zwing
  • Patent number: 6692129
    Abstract: The optical system includes a plurality of light modulators, one or more combining filters, and an optical relay system including a filter. Each light modulator modulates a corresponding incident light beam. The one or more combining filters superimpose the modulated light beams from each of the plurality of light modulators. The optical relay system filters the superimposed light and relays the filtered light to an image plane.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: February 17, 2004
    Assignee: Silicon Light Machines
    Inventors: Kenneth P. Gross, Paul Manhart, Richard A. Buchroeder
  • Publication number: 20020118312
    Abstract: A plasma display is provided with a plasma display panel, data drivers which apply data pulse to data electrodes of the plasma display panel, a control circuit which t controls an operation of the data drivers based on a video signal, and a protection signal output circuit. The protection signal output circuit outputs a protection signal to the control circuit when sum of currents supplied from the data drivers to the data electrodes within a time equal to one sub-field or more to less than one frame exceeds a previously set first specified current value. The protection signal restrains the operation of the data drivers.
    Type: Application
    Filed: January 25, 2002
    Publication date: August 29, 2002
    Applicant: NEC CORPORATION
    Inventors: Mitsuhiro Ishizuka, Eiichi Urushibata, Tadashi Nakamura, Hiroshi Shirasawa, Takatoshi Shoji
  • Publication number: 20020012076
    Abstract: A television flat panel display which has a housing, a viewing screen disposed in the housing; the viewing screen comprises a first sheet disposed in the housing as the front sheet of the display, a power input arrangement configured and disposed to power the display, an arrangement to produce picture elements as pixels, this arrangement at least comprising: an array of electrodes, a material configured to be energized by the electrodes, and addressing circuitry connected to the electrodes and the power input arrangement, the addressing circuitry being configured to convert electrical signal input to the material configured to be energized into optical signal output viewable as pixels on a particular point on the first sheet of the display. The material to be energized and the electrodes are disposed in a channel member comprising a plate-like structure with a plurality of ribs forming a plurality of grooves.
    Type: Application
    Filed: May 29, 2001
    Publication date: January 31, 2002
    Inventors: Markus Vos, Sven Pallhorn, Patrick W. Julius, Marten Walther, Tobias Kalber, Thomas Kessler
  • Publication number: 20010033344
    Abstract: An apparatus for displaying video images on a flat portable Liquid Crystal Display screen. The apparatus can have audio speakers, and peripheral components such as a clock, radio surge protectors, remote control and input jacks for connecting to a computer. The LCD screen can display recorded digitized images or live feeds. The LCD screen may be located remote from the transmitter providing the video and audio signal. The video and audio signals can be transmitted by wireless means. The signal transmitter can provide signals to multiple remotely located LCD screens and the image and sound can be controlled from a central location.
    Type: Application
    Filed: February 7, 2001
    Publication date: October 25, 2001
    Inventors: Darrell Grein, Chilton Webb
  • Patent number: 6185016
    Abstract: A system for generating an image comprising an illumination system having a light source and a plurality of holographic devices switchable between an active state wherein light from the light source is diffracted by the device and a passive state wherein the light is not diffracted by the device. A display device is positioned for illumination by the illumination system and operable to project a display image. The system further includes an optical projection device operable to receive the displayed image and form an intermediate image having a generally uniform illumination distribution on an optical diffuser. The diffuser is operable to project a resultant image with an emission angle larger than an emission angle of the display panel.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: February 6, 2001
    Assignee: DigiLens, Inc.
    Inventor: Milan M. Popovich
  • Patent number: 6031656
    Abstract: A flat-panel direct view display positions an array of electrostatically-actuated cantilevered micromirrors in front of a contrasting background and opposite a flat-panel electron beam source. Depending upon the display configuration, the electron beam source addresses either the array of micromirrors or a reference surface a row at a time while the other is held at a reference potential. The electron beams modulate the potential difference between each micromirror and the reference surface thereby adjusting the magnitude of the attractive electrostatic force between the two. This in turn modulates the deflection of the micromirrors between their quiescent and fully actuated states to selectively cover and uncover the background thereby producing a grey scale direct-view image.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: February 29, 2000
    Assignee: MEMSolutions, Inc.
    Inventors: Michael J. Little, William P. Robinson
  • Patent number: 5499053
    Abstract: An image observing apparatus capable of reducing reflections caused by incoming light. The apparatus includes an image display such as a liquid crystal cell with at least one optical system disposed between the image display and the observer's eye. A polarizing element is disposed between the optical system and the observer's eye. The apparatus is suited for use with electronic view finders, such as those used with video cameras. Because of the location of the polarizing element, incoming light and incoming light reflected from optical surfaces in the apparatus are decreased in intensity without any attenuation of the light forming the image. Thus, the visibility of the image is improved.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 12, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Kazumi Itoh
  • Patent number: 5381502
    Abstract: An optical panel 10 includes a plurality of waveguides 12 stacked together, with each waveguide 12 having a first end 12a and an opposite second end 12b. The first ends 12a collectively define a first face 16, and the second ends 12b collectively define a second face 18 of the panel 10. The second face 18 is disposed at an acute face angle relative to the waveguides 12 to provide a panel 10 which is relatively thin compared to the height of the second face. In an exemplary embodiment for use in a projection TV, the first face 16 is substantially smaller in height than the second face 18 and receives a TV image, with the second face 18 defining a screen for viewing the image enlarged.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: January 10, 1995
    Assignee: Associated Universities, Inc.
    Inventor: James T. Veligdan
  • Patent number: 5321416
    Abstract: A head-mounted visual display apparatus for displaying an image generated by an image generator to a wearer of the apparatus. The visual display apparatus comprises a helmet (10) comprising a shell and a headband (66) engaged to an interior surface of the shell; an adjustment mechanism (90) mounted to an exterior surface of the helmet for adjusting the size of the headband; and a video display (18,20) housed within the helmet and connected to the image generator for displaying the image. In a preferred embodiment the adjustment mechanism includes a knob (90) mounted on an exterior surface of the shell and connected to the headband by a rotatable shaft (99) disposed through the shell between the knob and the headband.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: June 14, 1994
    Assignee: Virtual Research Systems
    Inventors: Bruce R. Bassett, Kenneth Pimentel, Peter A. Ronzani
  • Patent number: 5299042
    Abstract: A display unit which can be used with various sources of information includes a light-to-light conversion element composed of first and second stripe electrodes arranged to jointly form a matrix electrode, and a photoconductive layer and a light modulation layer disposed between the first and second stripe electrodes, the impedance of the photoconductive layer changes with information written to the light-to-light conversion element. The photoconductive layer is irradiated with a linear light beam deflected in a direction to intersect first stripe electrode, while at the same time successive pieces of information to be inputted to corresponding picture elements are supplied to respective stripe electrode elements of the first stripe electrode. With the use of the matrix electrode, information can be written to and read out from the light-to-light conversion element at a higher response rate with high resolution.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: March 29, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Ichiro Negishi, Tetsuji Suzuki, Fujiko Tatsumi, Ryusaku Takahashi