Patents Examined by Mansour M. Said
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Patent number: 8212846Abstract: A display controlling method is provided. The display controlling method includes following steps. A plurality of display data of a frame is received. The display data is analyzed to obtain a plurality of grayscale distributions corresponding to the display regions. According to the grayscale distributions, a backlight controlling signal for adjusting a brightness of each of the light emitting groups is generated. According to the backlight controlling signal, a plurality of interferences corresponding to the display data is obtained. According to the interferences, grayscales of the display data are correspondingly adjusted. Therefore, the optical interference of each of the pixels from the light emitting groups not corresponding to the pixels can be eliminated.Type: GrantFiled: November 5, 2010Date of Patent: July 3, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Patent number: 8194018Abstract: One embodiment of the present invention provides a liquid crystal display device in which auxiliary capacitance lines are driven, thereby allowing the range of drive voltage to be kept narrow while increasing the difference between the maximum and minimum absolute values of voltage to be applied to liquid crystal, and in the present liquid crystal display device, the voltage ranges for an auxiliary capacitance line drive signal, a video signal, and a common potential are equally maintained as low as from 0V to 4V, while inverting the common potential every scanning period and causing the potential of the auxiliary capacitance line drive signal to rise in the same direction as the common potential at the time of the fall of the scanning signal such that the potential is maintained until the next frame.Type: GrantFiled: December 7, 2007Date of Patent: June 5, 2012Assignee: Sharp Kabushiki KaishaInventor: Hisashi Nagata
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Patent number: 8188940Abstract: An organic electroluminescent display device and a method of driving the same, which can prevent a voltage drop and ensure a simple layout, are disclosed. In one embodiment, the organic electroluminescent display device includes: i) a display unit including a plurality of pixel circuits, ii) a data driver providing a data signal to the display unit, iii) a scan driver providing a scan signal to the display unit, iv) a first voltage source applying a first power supply voltage, v) a second voltage source applying a second power supply voltage to the display unit, and a switching unit electrically connected between the data driver and the second voltage source, and adapted to output the second power supply voltage to the display unit for a first period of time and output the data signal to the display unit for a second period of time in response to a predetermined control signal.Type: GrantFiled: January 6, 2006Date of Patent: May 29, 2012Assignee: Samsung Mobile Display Co., LtdInventor: Yang-Wan Kim
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Patent number: 8184134Abstract: A display apparatus includes a display portion and a control portion, and effects color display depending on image signals for three colors. The control portion includes means 10, into which the image signals for three colors are inputted, for generating a first display signal for determining a brightness of predetermined one color at the display portion and second display signals for determining a hue of other two colors or an intermediary color therebetween at the display portion.Type: GrantFiled: October 21, 2008Date of Patent: May 22, 2012Assignee: Canon Kabushiki KaishaInventors: Yasufumi Asao, Hideo Mori, Kohei Nagayama, Hironao Tanaka, Ryuichiro Isobe
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Patent number: 8184133Abstract: Each color image is decomposed into at least one series of at least three successive primary images of different primary colors which are successively displayed by modulating the activation duration of the pixels of an imaging device. According to the invention, the distribution of the pixel activation phases in the three successive subframes is contracted: the pixel activation periods of the first primary image are shifted toward the end of the subframe of this first image, and, during the subframe of the third primary image, the pixel activation periods of this third primary image are shifted toward the beginning of the subframe of this third image. Color break-up faults are thus advantageously reduced.Type: GrantFiled: May 24, 2007Date of Patent: May 22, 2012Assignee: Thomson LicensingInventors: Patrick Morvan, Jonathan Kervec, Julien Thollot
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Patent number: 8184079Abstract: A driving apparatus for a display device and display device having the driving apparatus. The display device has a plurality of pixels each having a switching element. The driving apparatus includes a gate line connected to the switching element, a gate driver to apply a gate signal having first to third voltages to the gate line, a first voltage generator to generate the first and third voltages, and a second voltage generator to generate the second voltage. The first and second voltages turn on the switching element, and the third voltage turns off the switching element. The second voltage is less than the first voltage. Thus, since the gate driver includes the second voltage generator to generate the second voltage and a plurality of transistors, and generates a gate output having a step shape, a kickback voltage is reduced and flicker is prevented.Type: GrantFiled: January 25, 2007Date of Patent: May 22, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Joo Park, Jin-Oh Kwag, Hoe-Woo You, Jin-Hee Park
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Patent number: 8174546Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: GrantFiled: July 31, 2007Date of Patent: May 8, 2012Assignee: Dolby Laboratories Licensing CorporationInventors: Lorne A. Whitehead, Helge Seetzen, Gregory John Ward, Wolfgang Heidrich
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Patent number: 8174516Abstract: An object of the present invention is to realize a transmission distortion correction system for allowing an image signal including a plurality of picture signals to be corrected, and to realize an image signal transmitter and an image display unit.Type: GrantFiled: February 26, 2008Date of Patent: May 8, 2012Assignee: NEC Display Solutions, Ltd.Inventor: Reiichi Kobayashi
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Patent number: 8169424Abstract: A display device includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.Type: GrantFiled: May 27, 2008Date of Patent: May 1, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Toshio Miyazawa, Iwao Takemoto, Atsushi Hasegawa, Masashiro Maki, Kazutaka Goto
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Patent number: 8169416Abstract: The present invention provides a capacitive touch screen (1) which includes a substrate (10), a first electrode plate (20), an elastic spacer (30), a second electrode plate (40) and a transparent panel (50). The substrate (10) is made of a plate having a rim (11). The first electrode plate (20) is placed on the rim (11) of the substrate (10). The elastic spacer (30) is interposed between the first electrode plate (20) and second electrode plate (40). One of the first and second electrode plates comprises four or more electrode plates arranged along the rim (11) of the substrate (10). When a pressure is applied to the transparent panel (50), a distance (d) between the first and second electrode plate changes. Thereby, capacitances are varied at sensing points (S) corresponding to locations of the four or more electrode plates, and a touch location and a touch pressure are determined by variation rates of the measured capacitances.Type: GrantFiled: September 22, 2010Date of Patent: May 1, 2012Assignee: Hi-Dis Touchscreen Co., Ltd.Inventor: Sang-Youl Han
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Patent number: 8169390Abstract: The present invention relates to a method of controlling luminance of a backlight based on a processed image data after receiving information of image data, in order to improve the visibility of moving picture. An inverter according to the present invention includes a first block generating a first luminance control signal with an analog value depending on the luminance control signal with a duty ratio depending on a synchronization signal. The luminance control signals generated by the respective blocks are synthesized luminance control signal. Accordingly, a liquid crystal display employing two backlight control methods can be provided. Thus, it is possible to remove the drag phenomenon of a screen and, at the same time, to improve the visibility for moving picture.Type: GrantFiled: January 28, 2008Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Moon-Shik Kang, Inn-Sung Lee, Song-Yi Han
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Patent number: 8159428Abstract: The invention relates to methods and apparatus for forming images on a display utilizing a control matrix to control the movement of MEMs-based light modulators.Type: GrantFiled: January 6, 2006Date of Patent: April 17, 2012Assignee: Pixtronix, Inc.Inventors: Nesbitt W. Hagood, Abraham McAllister, Stephen R. Lewis, Roger W. Barton
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Patent number: 8149195Abstract: A method of driving a liquid crystal display device includes extracting brightness components of a portion of the first data for a current frame, arranging the brightness components for the current frame into a brightness histogram, retrieving brightness histograms for at least two frames prior to the current frame to generate an average histogram, generating second data for the current frame based on the average histogram, comparing the histogram for the current frame with the average histogram to determine whether an image at the current frame is a moving image or a still image, and driving the liquid crystal display device in accordance with one of the first data and the second data based on the comparison result.Type: GrantFiled: July 20, 2010Date of Patent: April 3, 2012Assignee: LG Display Co., Ltd.Inventors: Eui Yeol Oh, Min Ho Sohn, Ki Duk Kim, Seong Ho Baik
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Patent number: 8149184Abstract: The initial color temperature setting can change when a plasma display panel (PDP) is driven for a long period of time. One cause is due to the non-uniform deterioration of red, green, and blue fluorescent materials due to the ultraviolet rays discharged during operation of the panel. Color temperature correction is performed by setting the numbers of discharge pulses for fluorescent materials in accordance with a discharge pulse number correction curve with respect to the cumulative elapsed driven time of the PDP.Type: GrantFiled: March 4, 2009Date of Patent: April 3, 2012Assignee: Hitachi, Ltd.Inventors: Hidenao Kubota, Hirofumi Sakamoto, Masahiko Umeda, Masatoshi Sudo
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Patent number: 8120549Abstract: The present method is to drive a plasma display panel which displays a frame composed of a plurality of sub-fields having different weights of luminance. The method comprises using plural kinds of application voltage waveforms different in light emission luminance, as pulse voltages for sustain discharges in display of each sub-field, and adjusting the number of waves in each of the plural kinds of application voltage waveforms according to the weight of luminance set for each sub-field, thereby performing gradation display.Type: GrantFiled: December 6, 2007Date of Patent: February 21, 2012Assignee: Hitachi Ltd.Inventors: Kazushige Takagi, Tadayoshi Kosaka
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Patent number: 8111221Abstract: A display panel device includes a luminescence element and a capacitor. A driving transistor includes a gate that is connected to a first electrode of the capacitor. A first switch is connected to the first electrode of the capacitor for setting a reference voltage to the first electrode of the capacitor. A data line supplies a data voltage to a second electrode of the capacitor. A second switch is connected between the data line and the second electrode of the capacitor. A wiring is connected to a first electrode of the luminescence element and the second electrode of the capacitor for interconnecting a first power line and the first electrode of the luminescence element with the second electrode of the capacitor, the second switch, and the data line. A third switch is connected in series with the driver between the first electrode of the luminescence element and the first power line.Type: GrantFiled: September 24, 2010Date of Patent: February 7, 2012Assignee: Panasonic CorporationInventor: Shinya Ono
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Patent number: 8102369Abstract: A method of dynamically modifying web page displays used in various mobile devices. The method uses a motion detection mechanism to detect whether the mobile device is moving or in motion and then modifies web page displays sent to the device based upon the sensor readings. As such, the method, system, and apparatus are capable of automatically modifying a display provided to a mobile device based upon a determination that the user and/or device are moving and/or in motion. In another aspect, the method, system, and apparatus are also capable of modifying the complexity of a display provided to a mobile device based upon the degree of movement and/or motion by the user and/or device.Type: GrantFiled: May 23, 2008Date of Patent: January 24, 2012Assignee: International Business Machines CorporationInventors: James P. Appleyard, Jason A. Gonzalez, Mathews Thomas, Keeley L. Weisbard
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Patent number: 8094098Abstract: An organic light emitting display device includes a display area including a plurality of pixels connected to scan lines, light emission control lines and data lines; a scan driver electrically connected to the display area through the scan lines and light emission control lines; a data driver electrically connected to the display area through the data lines; an optical sensor for generating an optical sensor signal corresponding to the brightness of the ambient light; a first luminance control unit for providing a first luminance control signal for controlling a gamma-corrected gray level voltage of a data signal in accordance with the optical sensor signal; and a second luminance control unit for providing a second luminance control signal for controlling a pulse width of the light emission control signal in accordance with the optical sensor signal and the data of one frame.Type: GrantFiled: September 25, 2007Date of Patent: January 10, 2012Assignee: Samsung Mobile Display Co., Ltd.Inventor: Wook Lee
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Patent number: 8094089Abstract: A display control device includes: a priority order searching unit that searches a priority order management table to retrieve the priority level corresponding to the standby content screen that has stopped being displayed on a display device related to a usage starting operation when the usage starting operation is detected from any of display devices in the standby state; a switch display target designating unit that retrieves display devices displaying standby content screens of lower priority levels than the retrieved standby content screen, and designates a display device as the switch display target that is the display device displaying the standby content screen of the lowest priority level; and a display control unit that causes the designated display device of the switch display target to switchingly display the standby content screen that has stopped being displayed on the display device related to the usage starting operation.Type: GrantFiled: September 28, 2010Date of Patent: January 10, 2012Assignee: Fujitsu LimitedInventors: Akira Miyazaki, Toru Ozaki, Masanobu Hatanaka, Hirohisa Naito, Takahiro Kii, Kazumi Kubota, Yuji Takahashi
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Patent number: 8077172Abstract: In an image display system, when a sequence of frames ?, ?+1, ?+2, ?+3, . . . , with a frame rate of m is given as an input video signal S1, a controller controls a frame memory to output a sequence of frames ?, ?+2, . . . , as an output video signal S2 at a frame rate of m/2 and a sequence of frames ?+1, ?+3, . . . , as an output video signal S3 at a frame rate of m/2 such that the timing of outputting each of frames ?+1, ?+3, . . . , of the output video signal S3 is delayed by 1/m with respect of the timing of outputting each of frames ?, ?+2, . . . , of the output video signal S2. By displaying the output video signals S3 and S2 in the above-described manner, a resultant motion image formed by a combination of the output video signals S3 and S2 is refreshed at an effective frame rate of m.Type: GrantFiled: February 11, 2008Date of Patent: December 13, 2011Assignee: Sony CorporationInventors: Yoshihiko Kuroki, Tomohiro Nishi