Including Optical Means Patents (Class 345/697)
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Patent number: 8031372Abstract: A method processes image data in a color separation to attenuate printing defects arising from misalignment of serially arranged printheads that eject ink for the color separation. The method includes processing image values of the color separation with a first rendering process that corresponds to one printhead in a plurality of serially arranged printheads for printing the color separation, processing the image values of the color separation with a second rendering process that differs from the first rendering process for at least one other printhead in the plurality of serially arranged printheads for printing the color separation, generating firing signals for the one printhead from the rendered image values generated by the first rendering process, and generating firing signals for the at least one other printhead from the rendered image values generated by the second rendering process.Type: GrantFiled: April 22, 2008Date of Patent: October 4, 2011Assignee: Xerox CorporationInventors: David Allen Mantell, Jeffrey J. Folkins
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Patent number: 7995333Abstract: A sliding-type portable electronic device includes a main body having a first display, a first cover, and a second cover. The first cover and the second cover are slidably assembled on the main body. When the sliding-type portable electronic device is closed, the first cover and the second cover cooperatively cover the first display.Type: GrantFiled: October 13, 2009Date of Patent: August 9, 2011Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) LimitedInventor: Jian-Hui Li
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Publication number: 20110187764Abstract: A 2D/3D switchable backlight unit and an image display device employing the same are provided. The 2D/3D switchable backlight unit includes a light source, a light guide plate in which light emitted from the light source is total-internal-reflected, and a switch array comprising a plurality of switches that selectively contact a first surface of the light guide plate and emit light by frustrated total internal reflection inside the light guide plate. In 2D mode, each of the switches contacts the first surface of the light guide plate. In 3D mode, some of the switches contact the first surface of the light guide plate.Type: ApplicationFiled: February 4, 2011Publication date: August 4, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Jung-mok Bae, Hoon Song, Yun-woo Nam, Hong-seok Lee, Mi-jeong Song
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Publication number: 20110181636Abstract: A projection apparatus includes: a projection system which projects an image; a vibration detecting unit which detects vibration given to the main body of the apparatus; an installation condition determining unit which determines the installation condition of the main body of the apparatus; and an image blur preventive control unit which performs image blur preventive control for preventing blurring of the image caused by the vibration detected by the vibration detecting unit based on the vibration, wherein the image blur preventive control unit performs the image blur preventive control in accordance with the installation condition determined by the installation condition determining unit.Type: ApplicationFiled: January 19, 2011Publication date: July 28, 2011Applicant: Seiko Epson CorporatonInventor: Osamu Fukazawa
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Publication number: 20110157322Abstract: A display system is provided that enables three-dimensional images to be displayed. The display system includes an adaptable light manipulator positioned proximate to an image generator to provide an image to a viewer based on light that is received from the image generator. The image generator includes a pixel array. A display controller controls the pixel array to compensate for modification of a configuration of the adaptable light manipulator. The pixel array includes a plurality of display pixels. A plurality of image pixels is rendered to a plurality of respective subsets of the display pixels. The display controller is capable of changing a number of display pixels that represents each image pixel and/or which display pixels or groups thereof correspond to the respective image pixels.Type: ApplicationFiled: May 5, 2010Publication date: June 30, 2011Applicant: BROADCOM CORPORATIONInventors: James D. Bennett, Jeyhan Karaoguz
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Patent number: 7961197Abstract: Method and apparatus for display image adjustment is described. More particularly, handles associated with polygon vertices of a polygon rendered image are provided as a graphical user interface (GUI). These handles may be selected and moved by a user with a cursor pointing device to adjust a displayed image for keystoning, among other types of distortion. This GUI allows a user to adjust a projected image for position of a projector with respect to imaging surface, as well as for imaging surface contour, where such contour may be at least substantially planar, cylindrical, or spherical and where such contour may comprise multiple imaging surfaces. This advantageously may be done without special optics or special equipment. An original image is used as texture for rendering polygons, where the image is applied to the rendered polygons.Type: GrantFiled: December 29, 2009Date of Patent: June 14, 2011Assignee: NVIDIA CorporationInventors: Michael B. Diamond, Abraham B. de Waal, David R. Morey, Jerome F. Duluk, Jr.
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Patent number: 7948506Abstract: A full-color display device, comprising: a) a display having a plurality of sub-pixels formed in rows or columns in a first dimension including at least three different color sub-pixels forming a color gamut, and grouped into pixels within each row or column, each pixel including at least two of the gamut-specifying color sub-pixels and at least one additional sub-pixel having a color within the gamut and an efficiency higher than at least one of the color sub-pixels, wherein at least one pixel is defective and comprises one defective additional in-gamut sub-pixel; and b) a controller for driving the display pixels and for transforming an input signal into a compensated signal for selectively modifying the output of at least one color sub-pixel in the defective pixel, at least one other, but not all, of the color sub-pixels in a neighboring pixel in the first dimension, and additional in-gamut sub-pixels in neighboring pixels in a second dimension, the at least one other color sub-pixel including the sub-pixeType: GrantFiled: November 15, 2005Date of Patent: May 24, 2011Assignee: Global OLED Technology LLCInventors: Ronald S. Cok, Paul J. Kane
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Patent number: 7893916Abstract: A luminance compensation device for a backlight module and a method thereof are provided herein. In the present invention, a light sensor unit is utilized to sense a light intensity of the backlight module. A difference parameter based on the sensed light intensity and a preset luminance is calculated. Then, a gamma curve, a video data, or light intensity of the backlight module is adjusted according to the difference parameter. As a result, the level of display quality affected by the temperature or the aging of the backlight module can be reduced.Type: GrantFiled: July 18, 2007Date of Patent: February 22, 2011Assignee: Novatek Microelectronics Corp.Inventor: Hsien-Wang Wei
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Publication number: 20100321421Abstract: An optical assembly includes a plurality of light sources emitting light in a first direction at a predetermined orientation angle, and a light guide panel having a light incident section and a light emitting section. The light incident section has a first surface to receive the light emitted from the light sources in the first direction and the light emitting section is to emit light received from the light incident section in a second direction. Also included is at least one cover having a first surface adjacent the light sources and a second surface adjacent at least one portion of the light emitting section.Type: ApplicationFiled: March 19, 2010Publication date: December 23, 2010Applicant: LG Electronics Inc.Inventors: Won Do KEE, Seung Se Kim, Sung Young Park
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Publication number: 20100302290Abstract: A display assembly comprising a backlight unit having at least two optical waveguide elements lying alongside one another, and configured such that light is emitted with a greater brightness in a boundary region of the optical waveguide elements than outside the boundary regions, a display unit arranged such that during operation of the display assembly light emitted by the backlight unit impinges on a rear side of the display unit, a diffuser layer arranged between the backlight unit and the display unit, and a control unit that compensates for a greater brightness in the boundary regions by adapted driving of the display unit.Type: ApplicationFiled: September 3, 2008Publication date: December 2, 2010Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventor: Julius Muschaweck
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Patent number: 7839378Abstract: A unit for an method of analyzing received image data to determine whether the received image data corresponds to a single-view or to multiple views is disclosed. The method comprises: dividing the received image data (200) into a number of structures (1-9) of data elements (224-234); computing a correlation between a first one (1) of the structures of data elements and a second one (2) of the structures of data elements; and establishing that the received image-data corresponds to multiple views on basis of the correlation between the first one of the structures of data elements and the second one of the structures of data elements.Type: GrantFiled: August 4, 2005Date of Patent: November 23, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Marcellinus Petrus Carolus Michael Krijn, Wilbert Ijzerman
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Publication number: 20100265284Abstract: To overcome issues generated due to the light-shield part in a display device which displays different images towards a plurality of viewpoints, and to provide a device for easily synthesizing images to be displayed on a display part. A display controller includes: an image memory which stores viewpoint image data for a plurality of viewpoints; a writing control device which writes the viewpoint image data inputted from outside to the image memory; a parameter storage device which stores parameters showing a positional relation between a lenticular lens and the display part; and a readout control device which reads out the viewpoint image data from the image memory according to a readout order obtained by applying the parameters to a repeating regulation that is determined based on layout of the sub-pixels, number of colors, and layout of the colors, and outputs it to the display module as synthesized image data.Type: ApplicationFiled: April 14, 2010Publication date: October 21, 2010Applicant: NEC LCD Technologies, Ltd.Inventors: Tetsushi SATOU, Kazunori MASUMURA, Koji SHIGEMURA, Shinichi UEHARA
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Publication number: 20100259572Abstract: A driving apparatus and a driving method of a backlight module are provided. The backlight module includes multiple LEDs. The driving apparatus includes at least one thermal sensor, an optical sensor, and a processor. The thermal sensor is for detecting a working temperature of the LEDs. The optical sensor is for detecting brightness and color of the backlight module after a calibration function is enabled, to obtain difference values of the detected brightness and color with respect to predetermined brightness and color. The processor is for providing at least one initial thermal compensation table, to determine working currents of the LEDs associated with the working temperature. The processor further is for calibrating a content of the initial thermal compensation table corresponding with a current working temperature of the LEDs and storing the calibrated thermal compensation table as the initial thermal compensation table after the calibration function is enabled.Type: ApplicationFiled: April 6, 2010Publication date: October 14, 2010Inventors: CHIAO-CHIH YANG, Chih-Hua Lin, Wei-Jen Chou, Chien-Chung Hsiao
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Publication number: 20100214331Abstract: A backlight unit for a liquid crystal display device includes a reflection plate, a light guide plate over the reflection plate, the light guide plate having n grooves at a lower surface and including (n+1) areas divided by the grooves, wherein n is a natural number, a first LED assembly disposed at a first side surface of the light guide plate, the first LED assembly including (n+1) LED packages, each of which has at least one LED, wherein the LED packages of the first LED assembly correspond to the areas, respectively, and are separately driven, and a plurality of optical sheets over the light guide plate.Type: ApplicationFiled: December 9, 2009Publication date: August 26, 2010Inventors: JA-YOUNG PYUN, Hyun-Ho Shin, Kyu-Bong Jung
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Publication number: 20100182354Abstract: A display system that includes a liquid crystal element, a backlight, an adjustment unit, a light source control unit, and a liquid crystal control unit. The light source control unit operates the backlight to change a light source luminance level of light. The liquid crystal control unit operates a first plurality of pixels of the liquid crystal element to display normal information with a normal tone level. The liquid crystal control unit operates a second plurality of pixels of the liquid crystal element to display emphasis information with an emphasis tone level. When an adjustment value changes within a predetermined changeable range, the luminance level gradually changes with a change of the adjustment value, the normal tone level gradually changes with the change of the adjustment value, and simultaneously the emphasis tone level is maintained to correspond to brightness equal to or greater than brightness of the normal tone level.Type: ApplicationFiled: January 15, 2010Publication date: July 22, 2010Applicant: DENSO CORPORATIONInventors: Toshiharu Shiratsuchi, Masami Kataoka, Shinji Tsuda, Masashi Yamakawa
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Publication number: 20100177175Abstract: A representative display device includes a display module, a polarization controller and a compensator. Each pixel region of the display module has a first sub-pixel region, a second sub-pixel region and a third sub-pixel region respectively providing a first light, a second light and a third light of the same polarization. The polarization controller has control regions that control the polarization of the light passing therethrough. The compensator has first compensating regions, second compensating regions and third compensating regions corresponding to the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, respectively. The compensations of phase retardation of the first light, the second light and the third light generated by passing through the first compensating regions, the second compensating regions and the third compensating regions are different from one another.Type: ApplicationFiled: January 6, 2010Publication date: July 15, 2010Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Cheng-Yi Chen, Pot-Sun Lin, Ying-Jen Chen, Chun-Jui Wang
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Patent number: 7746365Abstract: An image display device comprises a frame arranged along the periphery of display screen and a plurality of detectors mounted on the frame, each for generating a detection signal in response to an object positioned outside of the frame. Each of detectors generates a detection signal indicative of the distance to an object that is present in a direction associated therewith. A control circuit selects a detection signal indicative of the shortest distance of the detection signals. The control circuit controls the direction of an image that is displayed on a display screen such that the bottom of the image is moved to a side corresponding to the detector that generates the selected detection signal.Type: GrantFiled: April 21, 2005Date of Patent: June 29, 2010Assignee: NEC Viewtechnology, Ltd.Inventor: Michiya Nishida
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Patent number: 7728789Abstract: A 2D and 3D image display apparatus including: a display panel forming an image by spatially modulating an input image signal; a polarization conversion device converting a polarization direction of a beam incident into the polarization conversion device according to a voltage applied in synchronization with the image signal; and a switching barrier unit including first polarization units having a first polarization direction and second polarization units having a second polarization direction in an alternate manner, and transmitting the beam passing the polarization conversion device through at least one of the first polarization unit and the second polarization unit. Therefore, a 3D image can be displayed without degrading a horizontal resolution thereof by using a combination of polarization devices with low fabrication costs, which may utilize a time-sequential display method.Type: GrantFiled: April 3, 2006Date of Patent: June 1, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-yong Jung, Dae-sik Kim, Kyung-hoon Cha, Tae-hyeun Ha
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Publication number: 20100118065Abstract: A display apparatus according to example embodiments may include a light source; an all-in-one type light guide plate; a reflective plate; and a display panel. The all-in-one type light guide plate may include a light guide member and light emitting members, wherein the light guide member reflects light incident from the light source toward the light emitting members, and the light emitting members protrude from one side of the light guide member and emit light incident from the light guide member. The light guide member and the light emitting members may be integrally formed or individually combined to form an all-in-one type light guide plate. The display apparatus may form an image using light from a backlight unit and external light.Type: ApplicationFiled: September 16, 2009Publication date: May 13, 2010Inventors: Hoon Song, Hong-seok Lee, Yong-kweun Mun, Yoon-sun Choi
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Publication number: 20100085373Abstract: This invention is to provide an image processing apparatus, an image processing method, a program, and a display in which both of a secret image and a public image can be efficiently displayed with high picture quality without reducing contrast of the public image. One of output images is a secret image which displays an input secret image as one of input images in a partial area of a screen, all the output images including the secret image have a relationship to become, when a luminance value of each pixel thereof is totaled, an input public image as one of the input images; and during a period in which at least the secret image is being outputted, shutter glasses disposed between a display to which the image signals are inputted and user's eyes are set to a light transmission state.Type: ApplicationFiled: January 22, 2008Publication date: April 8, 2010Inventors: Daigo Miyasaka, Masao Imai, Fujio Okumura
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Publication number: 20100079508Abstract: An electronic device may have gaze detection capabilities that allow the device to detect when a user is looking at the device. The electronic device may implement a power management scheme using the results of gaze detection operations. When the device detects that the user has looked away from the device, the device may dim a display screen and may perform other suitable actions. The device may pause a video playback operation when the device detects that the user has looked away from the device. The device may resume the video playback operation when the device detects that the user is looking towards the device. Gaze detector circuitry may be powered down when sensor data indicates that gazed detection readings will not be reliable or are not needed.Type: ApplicationFiled: September 30, 2008Publication date: April 1, 2010Inventors: Andrew Hodge, Michael Rosenblatt
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Publication number: 20100053455Abstract: In a backlight device including a plurality of cold cathode fluorescent tubes, a pitch of the cold cathode fluorescent tube provided on one end in a direction perpendicular to the longitudinal directions of the cold cathode fluorescent tubes with respect to a center line passing through a center in the perpendicular direction of a diffusion plate is differentiated from a pitch of the cold cathode fluorescent tube provided on the other end in the perpendicular direction with respect to the center line.Type: ApplicationFiled: June 13, 2007Publication date: March 4, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Kentaro Kamada, Yasumori Kuromizu
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Publication number: 20100045711Abstract: A power transmission cable includes at least one power conductor, an insulating layer surrounding the conductor to form at least one insulated conductor, a flame-retardant halogen free protective sheath provided in a radially external position with respect to the insulated conductor, wherein the sheath has an inner and an outer layer in contact with each other, the inner layer having a thickness at least equal to a thickness of the outer layer, the inner layer including a polymer material having a glass transition temperature equal to or lower than ?30° C., and the outer layer including a mud resistant polymer material.Type: ApplicationFiled: December 7, 2007Publication date: February 25, 2010Inventors: Kim Halskov, Morten Constantin Lervig
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Publication number: 20100039457Abstract: A display apparatus and a brightness correcting method thereof are provided. The display apparatus includes: a display panel which displays an image; a backlight assembly which includes at least one light source unit which supplies a light to the display panel; and a brightness correcting unit that corrects a brightness of the image using brightness correction information which is determined based on the brightness of each area of the image.Type: ApplicationFiled: April 3, 2009Publication date: February 18, 2010Applicant: Samsung Electronics Co., Ltd.Inventor: Sang-hoon Lee
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Patent number: 7663650Abstract: A brightness level frequency indicated on a frame basis by an input video signal is accumulated in decreasing order or increasing order of the brightness level so that an accumulated brightness level frequency is calculated for every brightness level. The brightness level corresponding to the accumulated brightness level frequency smaller by a predetermined value than any one of the accumulated brightness level frequencies indicated as maximum is regarded as an effective maximum brightness level. Based on this effective maximum brightness level, the number of sub-fields is determined for assignment to each different brightness segment region. With such a configuration, the resulting display device can lead to favorable halftone representation without causing viewers to feel something is wrong no matter what type of display images.Type: GrantFiled: June 7, 2006Date of Patent: February 16, 2010Assignee: Panasonic CorporationInventors: Masahiro Suzuki, Dai Shizume, Yasunori Higuchi, Kenichiro Hosoi
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Publication number: 20090251497Abstract: The invention relates to a discharge lamp with a floor plate and a roof plate designed for dielectrically impeded discharge, in which the minimum discharge distances are at least 10 mm.Type: ApplicationFiled: May 31, 2007Publication date: October 8, 2009Inventors: Lothar Hitzschke, Frank Vollkommer
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Publication number: 20090225107Abstract: The invention relates to a display element having a plurality of display units laminated to each other, an electronic paper including the same, an electronic terminal apparatus including the same, a display system including the same, and a method of processing an image in a display element, and an object of the invention is to provide a display element capable of obtaining a display image with good display quality and improving user convenience, an electronic paper using the same, an electronic terminal apparatus using the same, and a display system using the same.Type: ApplicationFiled: March 26, 2009Publication date: September 10, 2009Applicant: FUJITSU LIMITEDInventors: Masaki NOSE, Hisashi YAMAGUCHI, Tsuneo WATANUKI, Makoto FUKUDA, Toshiaki YOSHIHARA
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Patent number: 7586503Abstract: A modulator is controlled in accordance with each sub-frame of a frame of image data. An aiming mechanism is physically adjusted to differently aim each sub-frame. Acoustical noise in physically adjusting the aiming mechanism is reduced.Type: GrantFiled: July 30, 2005Date of Patent: September 8, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Stan E. Leigh, Arnold W. Larson, P. Guy Howard, Ted W. Barnes
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Publication number: 20090219296Abstract: A display image of a frame is input in time series. An inverse colored image to cancel the display image is generated. The display image is divided into a plurality of subfields, and the inverse colored image is also divided into a plurality of subfields. A time divisional image is generated by disposing a display time of a subfield of the inverse colored image before and after a display time of a corresponding subfield of the display image. While displaying the time divisional image on a screen, a light from the screen is transmitted in synchronization with display timing of the display image in a display time of the time divisional image, and the light is cut off in synchronization with display timing of the inverse colored image in the display time of the time divisional image.Type: ApplicationFiled: February 26, 2009Publication date: September 3, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Tomoki Watanabe
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Publication number: 20090147033Abstract: An image display apparatus for displaying images includes a light source for emitting an illumination light with an adjustable light intensity, at least one spatial light modulator (SLM) for receiving and applying an image signal for modulating the illumination light transmitted from the light source, and a control circuit for controlling the light source and/or the spatial light modulator to project modulated lights for image display having different dynamic ranges of the brightnesses between at least two successive frames.Type: ApplicationFiled: December 5, 2008Publication date: June 11, 2009Inventors: Kazuma Arai, Taro Endo, Fusao Ishii
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Publication number: 20090135213Abstract: A display device includes a pixel defined by a plurality of sub-pixels. The plurality of sub-pixels include first, second, third and fourth sub-pixels. A second hue of the second sub-pixel is closest to a first hue of the first sub-pixel in the chromaticity diagram of the L*a*b* color system, and a third hue of the third sub-pixel is closest to the first hue on the opposite side to the second hue with respect to the first hue in the chromaticity diagram of the L*a*b* color system among the hues. The luminances of the plurality of sub-pixels are set such that while a color displayed by the pixel changes from black via the first color of the first sub-pixel to white, the luminance of the first sub-pixel starts to be increased, and when the luminance of the first sub-pixel reaches a predetermined luminance, the luminance of at least one of the second sub-pixel and the third sub-pixel starts to be increased.Type: ApplicationFiled: June 16, 2006Publication date: May 28, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Kazunari Tomizawa, Kozo Nakamura
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Patent number: 7511724Abstract: A control of gobos defend by records in the gobo. The gobos are formed by menued shapes.Type: GrantFiled: May 13, 2005Date of Patent: March 31, 2009Assignee: Production Resource Group, LLCInventor: Mark A. Hunt
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Patent number: 7502006Abstract: A liquid crystal device has a pixel electrode connected to a scanning line and a data line through a TFT, and an opposing electrode opposed to the pixel electrode with a liquid crystal sandwiched therebetween. An almost constant common potential LCcom is applied to the opposing electrode. When this common potential LCcom is adjusted, first, the common potential LCcom is adjusted to a potential Vcom?, which minimizes the variation amount of light emitted from the liquid crystal device in the course of displaying a specific image, and, second, the common potential LCcom is set to a potential V0, which is higher than the potential Vcom?. Thus, it is possible to select, in an easy procedure, a common potential which can suppress a flicker while reducing a direct current component applied to the electro-optical material.Type: GrantFiled: November 18, 2004Date of Patent: March 10, 2009Assignee: Seiko Epson CorporationInventor: Toru Aoki
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Patent number: 7492378Abstract: An image display system includes a light source for projecting an illumination light. The image display system further includes a light source control unit that controls the light source to adjust the illumination intensity and/or light emission time of the illumination light. The display system further includes an SLM (Spatial Light Modulator) having a plurality of pixel elements. The SLM modulates the incident illumination light to generate gray scales. The light source control unit controls the light source during at least one time slice in one frame period, and the SLM uses that time slice to control a minimum adjustable gray scale.Type: GrantFiled: August 16, 2007Date of Patent: February 17, 2009Assignees: Silicon Quest Kabushiki-Kaisha, Olympus CorporationInventors: Hirokazu Nishino, Yoshihiro Maeda, Kazuma Arai, Fusao Ishii
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Patent number: 7468721Abstract: The present invention provides a liquid crystal display capable of detecting external light by an optical sensor without providing a window in front of a product. A top face of a liquid crystal display panel (18) corresponds to a display surface. A light-guiding plate (19) is disposed on a rear face of the liquid crystal display panel (18). A backlight (9) shown in FIG. 1 is attached to the light-guiding plate (19). Light emitted from the backlight (9) is guided to the display surface of the liquid crystal display panel (18) by the light-guiding plate (19). A reflection sheet (20) is disposed on a bottom face of the light-guiding plate (19). An optical sensor (10) is attached to a side face of the light-guiding plate (19) with its light-receiving face facing the inside of the light-guiding plate (19).Type: GrantFiled: April 18, 2003Date of Patent: December 23, 2008Assignee: NEC Display Solutions, Ltd.Inventor: Takao Nakano
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Publication number: 20080238953Abstract: A display drive apparatus includes a detection voltage applying circuit that applies a predetermined detection voltage to the drive element of the pixel drive circuit, a voltage detecting circuit that detects a voltage value corresponding to a device characteristic unique to the drive element after a predetermined time elapses after the application of the detection voltage to the drive element by the pixel drive circuit, and a gradation designating signal generating circuit that generates a gradation designating signal based on an absolute value of a voltage component according to a gradation value of display data and a value, acquired by multiplying an absolute value of the voltage value detected by the voltage detecting circuit, by a constant greater than 1, and applies the gradation designating signal to the pixel drive circuit, whereby a change in device characteristic.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Applicant: Casio Computer Co., Ltd.Inventor: Jun Ogura
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Patent number: 7414621Abstract: A laser projection device (LPD) suitable for displaying color images is disclosed. The LPD is used to excite various photoluminescent materials located on a display screen so as to produce multi-color displays. Additionally, the screen may be movably mounted so as to reduce laser speckling.Type: GrantFiled: October 31, 2004Date of Patent: August 19, 2008Assignee: Symbol Technologies, Inc.Inventors: Dmitriy Yavid, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick F. Wood
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Publication number: 20080122861Abstract: System and method for generating multiprimary signals with optimization for bit depth for use in display devices. A preferred embodiment comprises converting an input color signal into an output color signal, wherein the number of colors in the output color signal is less than a number of colors used in a display system, when a weighting of the input color signal is less than a specified threshold, and converting the input color signal into an output color signal, wherein the number of colors in the output color signal is equal to the number of colors used in the display system, when the weighting of the input color signal is greater than the specified threshold. The use of fewer colors eliminates low bit depth colors, allowing increased dither quality in dimmer images.Type: ApplicationFiled: November 27, 2006Publication date: May 29, 2008Inventors: Rajeev Ramanath, Jeffrey Matthew Kempf
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Patent number: 7336290Abstract: According to one embodiment, a method of increasing a perceived resolution of a display includes directing light at a optical dithering element and repeatedly transitioning the optical dithering element from a first position to a second position and then back to the first position such that the mirror alternately reflects light to a first position on the display and then to a second position on the display. Each transition of the mirror includes controlling any overshoot or ringing in the position of the optical dithering element by providing a predetermined drive signal to the optical dithering element to smoothly accelerate and decelerate the element during the traverse between the first and second positions.Type: GrantFiled: January 7, 2004Date of Patent: February 26, 2008Assignee: Texas Instruments IncorporatedInventors: Stephen W. Marshall, Michael M. Allbright, Bill C. McDonald
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Publication number: 20080024529Abstract: The present invention provides a display device including a pixel array unit, a first power supply line, and a second power supply line. The pixel array unit is formed by two-dimensionally arranging pixel circuits each including an electrooptic element determining display luminance and a driving circuit for driving the electrooptic element in a form of a matrix. The first power supply line is for supplying a first power supply potential to the pixel circuits. The first power supply line is arranged along a direction of pixel arrangement of a pixel column in the pixel array unit. The second power supply line is for supplying a second power supply potential to the pixel circuits. The second power supply line isw arranged along the direction of the pixel arrangement of the pixel column in the pixel array unit.Type: ApplicationFiled: July 17, 2007Publication date: January 31, 2008Applicant: Sony CorporationInventors: Mitsuru Asano, Seiichiro Jinta, Hiroshi Fujimura, Masatsugu Tomida
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Patent number: 7317465Abstract: A method of displaying an image may include receiving image data for the image, and defining first and second sub-frames of the image. The first and second sub-frames may have corresponding pluralities of image elements, with each image element of the second sub-frame spatially offset an offset distance from a corresponding image element of the first sub-frame. The first sub-frame may be displayed in a first position, and the second sub-frame may be displayed in a second position. Each displayed image element of the second sub-frame may be spatially offset substantially the offset distance from the corresponding displayed image element of the first sub-frame.Type: GrantFiled: January 27, 2004Date of Patent: January 8, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Will Allen, Edward B. Anderson
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Patent number: 7289091Abstract: A method of stably driving a liquid crystal display apparatus and a liquid crystal display apparatus, the apparatus including a liquid crystal display panel having data electrode lines allocated for three colors and scan electrode lines crossing the data electrode lines and a lighting device installed in the back of the liquid crystal display panel to sequentially generate back lights having different colors, so that a unit driving period is divided into first, second, and third color driving periods. The liquid crystal display apparatus sequentially applies a single scan pulse to the scan electrode lines during a two-color driving period, in which the two color driving periods among the three color driving periods are combined, and activate two colors while the single scan pulse is applied to the scan electrode lines.Type: GrantFiled: March 12, 2004Date of Patent: October 30, 2007Assignee: Samsung SDI Co., Ltd.Inventor: Hae-Jin Heo
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Patent number: 7145581Abstract: In a display refresh period, an array of display elements (e.g., pixels) forming a display device (e.g., a spatial light modulator) may be driven using selectively updated pulse width modulated waveforms. Decoupling of digital storage, storing display data that generates updated pulse width modulated waveforms, from the array of pixels may provide decoupling of pixel data and pulse width modulated waveform updates. In one embodiment, an update value of pixel data is provided to a display element. Using once the update value, a modulated signal may be generated for a display refresh period to drive the display element, significantly reducing updates required for the pixel data at the display element.Type: GrantFiled: August 30, 2002Date of Patent: December 5, 2006Assignee: Intel CorporationInventor: Thomas E. Willis
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Patent number: 7046413Abstract: A system and method are used for pulse to pulse dose control in an illumination system, used, for example, in a lithography or a maskless lithography machine. The system and method can be used to decrease effective laser pulse-to-pulse variability in lithographic lasers, allowing adequate dose control using a minimum number of pulses (e.g. as little as one pulse).Type: GrantFiled: July 29, 2005Date of Patent: May 16, 2006Assignee: ASML Holding N.V.Inventors: Jason D. Hintersteiner, Karel van der Mast, Arno Jan Bleeker
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Patent number: 6975337Abstract: A projection type image display device includes a plurality of image display elements that perform modulation of light rays in accordance with an image signal, a color synthesizing optical element for synthesizing light rays having mutually different wavelength ranges that have been modulated by these image display elements by use of a dichroic membrane, lens groups having a positive refractive power as a whole that are disposed between the image display element and the color synthesizing optical element, and a projection optical system for projecting an image synthesized by the color synthesizing optical element. The projection type image display device further includes a storage circuit for storing data used to correct the brightness irregularity of a projected image, and a brightness irregularity correcting circuit for correcting brightness irregularity of a projected image on the basis of the data stored in the storage circuit.Type: GrantFiled: January 23, 2002Date of Patent: December 13, 2005Assignee: Canon Kabushiki KaishaInventors: Toshihiko Yokoyama, Yasuo Suzuki
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Patent number: 6963434Abstract: A method of calculating an aerial image of a spatial light modulator array includes calculating a pixel interference matrix that represents pair wise interference between pixels of the spatial light modulator array; calculating effective graytones corresponding to modulation states of the pixels; and calculating the aerial image based on the pixel interference matrix and the effective graytones. The graytones depend only on the modulation states of the pixels. The pixel interference matrix depends only on position variables. The position variables are position in an image plane and position in a plane of a source of electromagnetic radiation. The pixel interference matrix can be a matrix of functions. The pixel interference matrix can be a four dimensional matrix. The effective graytones are approximated using sinc functions, or using polynomial functions.Type: GrantFiled: April 30, 2004Date of Patent: November 8, 2005Assignee: ASML Holding N.V.Inventor: Azat M. Latypov
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Patent number: 6958760Abstract: A false contour correction apparatus and method in an image display system, by which a false contour at a place where conversion of the unit bits of data is severe on a display device driven in a digital system is corrected, is provided. According to the present invention as described above, received image data is displayed by reversely-symmetrically arranging the bits of two digital driving display means, so that fatal false contour during digital driving can be removed.Type: GrantFiled: November 6, 2000Date of Patent: October 25, 2005Assignee: Samsung Electronics, Co., Ltd.Inventor: Young-Sun Kim
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Patent number: 6892014Abstract: A display device includes: an array of color pixels each color pixel including a plurality of individually addressable subpixels for emitting different colored light; and a fiber optic faceplate arranged adjacent the array of color pixels, with one fiber for each color pixel.Type: GrantFiled: July 23, 2002Date of Patent: May 10, 2005Assignee: Eastman Kodak CompanyInventors: Ronald S. Cok, Michael E. Miller
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Patent number: 6885386Abstract: The invention provides an animated display in which an illumination source projects light through a platen and a transparency that contains alternative translucent images. The invention involves using an electronic processor to drive two highly controllable motors. Light sensors are used to determine the alignment of a mask over said transparency relative to the light source. The sensors provide input to the processor to allow the two motors to align the mask horizontally. The motors are used to drive the mask vertically in order to change the projected image. In a second embodiment, the lens is a lenticular lens behind the translucent raster multiple image film. A motor acts to drive the mask to align the opaque or image portions of the raster to the focusing portion of the lenticular lens. A lenticular lens may focus on the image line for one of the images on the film.Type: GrantFiled: October 14, 2003Date of Patent: April 26, 2005Inventor: Richard L. Weinbrenner
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Patent number: 6870554Abstract: Imaging systems that use a spatial light modulator (SLM), such as maskless lithography systems using a digital micromirror device (DMD), suffer from low throughput at high resolution because of the increase in the number of pixels to be imaged. A possible solution to this problem is provided by using multiple SLMs. However, packaging multiple SLMs on a suitable base is inefficient because, in an SLM, surrounding the active region, a large inactive region is required for the chip kerf and the connector fan-in; these inactive regions thus prevent close packing of the SLMs. This invention enables close packing of a large number of SLMs by arranging them in twin planes, such that the kerf and fan-in regions overlap substantially.Type: GrantFiled: January 7, 2003Date of Patent: March 22, 2005Assignee: Anvik CorporationInventor: Kanti Jain