Intensity Control Patents (Class 345/63)
  • Patent number: 10347173
    Abstract: An organic light emitting diode display and a method for driving the same are disclosed. The organic light emitting diode display includes a display panel including a plurality of pixels, a display panel driver configured to drive signal lines of the display panel, and a timing controller configured to divide one frame into a plurality of subframes, divide data of an input image at each bit, map the data of the input image to the plurality of subframes, control an operation of the display panel driver, and adjust data addressing speeds of the plurality of subframes for adjusting the emission times of the upper and lower display lines of the display panel differently.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: July 9, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Joonhee Lee, Sunghoon Kim, Jongmin Park
  • Patent number: 10264266
    Abstract: Display brightness adjustment apparatus and methods are described in which the average brightness of a display may be scaled up or down using a non-linear function. When applying the non-linear function to scale down brightness, the contrast of the output signal may not be reduced so that the dynamic range and highlights are preserved. The non-linear brightness adjustment may be performed automatically, for example in response to ambient light level as detected by sensor(s), but may also be applied in response to a user adjustment to a brightness control knob or slider. The non-linear brightness adjustment may be performed globally, or alternatively may be performed on local regions of an image or display panel. The non-linear function may be a piecewise linear function, or some other non-linear function.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: April 16, 2019
    Assignee: Apple Inc.
    Inventor: Hao Pan
  • Patent number: 10141839
    Abstract: The present disclosure provides a voltage controlling circuit of a T-CON load variation, a display panel and a display device. The voltage controlling circuit of the T-CON load variation includes: a power source chip and a voltage controlling circuit, and the voltage controlling circuit includes a photoelectric coupler, a first comparator, a second comparator, a first field effect transistor and a second field effect transistor. Therefore, the technical scheme of the present disclosure has an advantage that the Vcore may automatically vary with a variation of the load.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 27, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Dan Cao
  • Patent number: 10116909
    Abstract: A circuit and method for detecting a vertical cut in a sequence of digital video images. Each pixel of a video frame is filtered then compared to a filter threshold. If the threshold is met, a current pixel bit is set as active. A delayed pixel bit is generated from the current pixel bit, and a changed pixel bit is generated if either but not both of the current pixel bit and the delayed pixel bit is active. Active pixels are counted. The count of active pixels in the current image and the count of active pixels in the delayed image are used to weight the active pixel count of the changed image. The counts are used to determine a change value for the current image. The change value may be a large positive value, a large negative value, or neither. A predefined pattern of the change values over a sequence of frames indicates a vertical cut in the sequence.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: October 30, 2018
    Assignee: PRIME IMAGE DELAWARE, INC.
    Inventor: Christopher Scott Gifford
  • Patent number: 10062324
    Abstract: A display device is disclosed in which a luminance control device includes a temperature sensor that detects a temperature of a display device; an average picture level part that calculates an average picture level, which defines an average brightness of an image input into the display device; and a luminance control part that generates a temperature-dependent peak luminance, which varies with temperature and average picture level, based on a top gain curve defining how a maximum luminance decreases as the temperature of the display device rises and a bottom gain curve defining how a minimum luminance decreases as the temperature of the display device rises, wherein the luminance control part fixes the temperature-dependent peak luminance at a specific luminance level, regardless of changes in average picture level, at a specific temperature in a high-temperature range which is higher than a room-temperature range.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: August 28, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hyojin Kim, Suhyuk Jang, Hyejin Kim
  • Patent number: 10049630
    Abstract: An image correcting unit including: a data converting unit which receives image data, and generates display data by converting respective grayscale values which are included in the image data to high pixel data and low pixel data; and a white pixel detecting unit which detects image data lines which include not less than a first number of white grayscale values from the image data, and outputs a conversion signal when not less than a second number of the detected image data lines are successively arranged, wherein upon receiving the conversion signal from the white pixel detecting unit, the data converting unit converts the white grayscale values which are included in the successively arranged image data lines to first high pixel data and first low pixel data, wherein the first high pixel data and the first low pixel data have a different value from each other.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: August 14, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tong Ill Kwak, Woon Yong Lim, Bong Kyun Jo, Ki Hyun Pyun, Young Uk Hwang
  • Patent number: 10019936
    Abstract: There is provided an organic light emitting display that includes a plurality of pixels are arranged in a plurality of rows and columns Each of the pixels includes a plurality of sub pixels. At least one sub pixel of the plurality of sub pixels of at least one pixel is divided into a plurality of divisional sub pixels. Since the divisional sub pixels alternately emit light, it is possible to reduce deterioration speed of the sub pixels, thereby preventing an afterimage from being generated by deterioration of the sub pixels.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: July 10, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Goo Jung, Do-Hyung Ryu
  • Patent number: 9786210
    Abstract: A pixel array composes of a plurality of basic pixel units arranged in row and column directions. Each of the basic pixel units consists of a first sub-pixel group composed of two adjacent first sub-pixel having a first color, a second sub-pixel group composed of two adjacent second sub-pixels having a second color, and two third sub-pixel groups, each of which is composed of two adjacent third sub-pixels having a third color. The distance between the two adjacent first, second, third sub-pixels, in row or column direction is smaller than a first predetermined value. The two adjacent third sub-pixel groups are arranged at a first row, and located at a first, third columns respectively, and the first, second sub-pixel group are arranged at a second row, wherein, the first sub-pixel group is located at a second column, and the other is located at a fourth column.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: October 10, 2017
    Assignee: EverDisplay Optronics (Shanghai) Limited
    Inventor: Yuhsiung Feng
  • Patent number: 9779486
    Abstract: An image processing apparatus and method thereof are provided. The image processing apparatus includes a false contour detection circuit and a false contour reduction circuit. The false contour detection circuit includes detection modules and a determination module. The detection modules respectively detect different features of the same image input signal and correspondingly output feature coefficients. The determination module is coupled to the detection modules and determines a false contour coefficient according to the feature coefficients. The false contour reduction circuit is coupled to the determination module of the false contour detection circuit to receive the false contour coefficient and perform false contour reduction on the image input signal according to the false contour coefficient, so as to output a corresponding image output signal.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 3, 2017
    Assignee: Novatek Microelectronics Corp.
    Inventors: Mei-Juan Yang, Jian-Hua Liang, Yuan-Jia Du
  • Patent number: 9679213
    Abstract: An image processing apparatus and an image processing method are provided. The image processing apparatus comprises a false contour detection circuit and a false contour reduction circuit. The false contour detection circuit is configured to detect a flat pixel distribution of an image input signal and correspondingly output a false contour coefficient. The false contour reduction circuit is coupled to the false contour detection circuit to receive the false contour coefficient, and is configured to perform false contour reduction on the image input signal according to the false contour coefficient, so as to correspondingly output an image output signal.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: June 13, 2017
    Assignee: Novatek Microelectronics Corp.
    Inventors: Mei-Juan Yang, Jian-Hua Liang, Yuan-Jia Du
  • Patent number: 9607558
    Abstract: Power levels of a backlight are adjusted in a number of ways and based on a number of criteria. The adjustments result in a lower power consumption and, in some cases, may enhance audience attention to important objects in a scene. The adjustments comprise, for example, a combination of ramping down power (lowering final display brightness) in concert with corresponding compensatory LCD adjustments (increasing final display brightness). The adjustments may also include, for example, system dimming after ramp down/LCD adjustments are exhausted, or the shifting of an LDR2HDR curve.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: March 28, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Damir Wallener, Neil W. Messmer
  • Patent number: 9581886
    Abstract: A projector including: a plurality of light sources; a modulator that modulates light emitted from each of the plurality of light sources; a projection unit that projects the modulated light modulated by the modulator; a storage unit that stores grayscales of the light sources and adjustment values for adjusting the light emission amounts of the light sources in order to make white balance of the modulated light projected through the projection unit in relation to each other; and a light-emission-amount adjusting unit that adjusts the light emission amounts of the light sources based on the adjustment values corresponding to the grayscales of the light sources.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: February 28, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kengo Mizuno
  • Patent number: 9524677
    Abstract: A display panel driver that includes a compensating value generating part, a compensating lookup table and a compensating part. The compensating value generating part generates an offset and a compensating grayscale based on luminances of pixels of a display panel. The compensating lookup table stores the offset and the compensating grayscale. The compensating part compensates an input grayscale of the pixel to generate a data signal using the compensating lookup table.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: December 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Woo Park, Su-Min Yang
  • Patent number: 9501971
    Abstract: The described technology relates generally to an organic light emitting display and a method for driving the same. According to an exemplary embodiment, an image is displayed by dividing one frame into a plurality of sub-fields, and a gamma curve is realized with a combination of a plurality of sub-fields respectively corresponding to a plurality of grays of image data so that image data can be compensated without adding a memory. In addition, the embodiment can extract the one combination by setting a combination of sub-fields that exceeds one frame time among the plurality of sub-fields to be an exception condition.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: November 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ji-Gong Lee
  • Patent number: 9490792
    Abstract: A pulse width modulation (PWM) signal generator generates a PWM signal having a specified effective PWM duty resolution for a corresponding cycle window. The PWM signal generator receives an N-bit value representing a duty to be implemented and sets values X and Y to the M least significant bits and the N-M most significant bits, respectively, of the N-bit value. The value M can be determined based on the value N and a maximum implementable frequency of a clock signal used to time the generation of each PWM cycle. The PWM signal generator generates a cycle window of 2M PWM cycles, each PWM cycle of the cycle window having a duty of either Y or Y+1. The number of PWM cycles in the cycle window having the duty Y+1 is based on the value X and the PWM cycles having a particular duty are contiguous within the cycle window.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: November 8, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventor: Bin Zhao
  • Patent number: 9318039
    Abstract: A method of operating an organic light emitting diode (OLED) display device and an OLED display using the method are disclosed. In one aspect, input data is received, the input data is converted into mapped data based on random data mapping information, one sub-frame pattern is selected from a plurality of sub-frame patterns based on the random data mapping information, and an image is formed for the display device based on the mapped data and the selected sub-frame pattern.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 19, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Eun Park, Dong-Won Lee, Eun-Gyeong Choe, Hee-Chul Hwang
  • Patent number: 9311861
    Abstract: A display device includes a display panel including a display region and first and second drivers. Feature data indicating feature values of first and second images displayed on first and second portions of the display region are exchanged between the first and second drivers, and the first and second drivers drive the first and second portions of the display region in response to the feature data.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: April 12, 2016
    Assignee: Synaptics Display Devices GK
    Inventors: Takashi Nose, Hirobumi Furihata, Akio Sugiyama, Toshio Mizuno
  • Patent number: 9244325
    Abstract: A display sheet has a display layer, a first electrode on one side of the display layer, a second electrode on another side of the display layer, and an electrode protection layer between the display layer and the first electrode. The display layer has a partition structure dividing the display layer into a plurality of regions and a liquid dispersion filling the individual regions. The electrode protection layer and the partition structure are integrally formed and both mainly composed of an electroconductive polymer.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 26, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kenji Hayashi, Saichi Hirabayashi, Daisuke Abe
  • Patent number: 9245472
    Abstract: A display device including a data mapping unit configured to identify a minimum value of the three-color input data corresponding to red, green, and blue (RGB), to determine white output color data by multiplying the identified minimum value by a gain ratio, and to subtract the white output color data from each of the three-color input data to determine RGB output color data, a gain adjustment unit configured to determine a preliminary gain ratio to minimize standard deviations of each of the white and RGB output color data, and to change a preliminary gain ratio based on an accumulated sum of color data used for respective sub-pixels in a previously displayed image to determine the gain ratio, and a display unit including unit pixels, each including RGB and white sub-pixels, and configured to display an image which corresponds to the and RGB output color data.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 26, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Woo Jang, Jong-Woong Park
  • Patent number: 9225179
    Abstract: A system includes multiple power supplies connected in series and an active balancing circuit. The active balancing circuit includes an LC resonance circuit and multiple switches configured to selectively couple different ones of the power supplies to the LC resonance circuit. The LC resonance circuit includes a capacitor, an inductor, and an additional switch. The capacitor is configured to store energy to be transferred between two or more of the power supplies. The additional switch is configured to selectively create a resonance between the capacitor and the inductor in order to reverse a discharge current direction through the capacitor.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 29, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Qingguo Liu
  • Patent number: 9203121
    Abstract: A system includes multiple power supplies connected in series and an active balancing circuit. The active balancing circuit includes an LC resonance circuit and multiple switches configured to selectively couple different ones of the power supplies to the LC resonance circuit. The LC resonance circuit includes an inductor, a capacitor, and an additional switch. The inductor is configured to store energy to be transferred between two or more of the power supplies. The additional switch is configured to selectively create a resonance between the inductor and the capacitor in order to reverse a direction of a current flow through the inductor. The active balancing circuit can transfer energy between individual power supplies or groups of power supplies.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 1, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Qingguo Liu
  • Patent number: 9153197
    Abstract: There is provided a storage apparatus for providing an effective memory addressing method. The storage apparatus includes at least one memory and at least one controller coupled to the at least one memory to provide address information. Each of the controllers includes a first controller for providing on/off information of subfields included in one frame for driving pixels in a display panel, a third controller for horizontal position information corresponding to a selected scan line from scan lines of a display panel, and a second controller for providing vertical position information corresponding to a pixel on the selected scan line. On/off information of subfields for at least two pixels is stored in a cell located at the vertical position and the horizontal position in the at least one memory.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jeong-Keun Ahn
  • Patent number: 9154645
    Abstract: An image scanner including a near field communication unit configured to perform near field communication with a device located within a communicable distance from the near field communication unit, an image sensor, and a controller connected with the image sensor via a cable, the controller being configured to perform an image data generating operation of controlling the image sensor to scan an image and generate image data, detect a start of the near field communication between the near field communication unit and the device, based on a signal output from the near field communication unit, and when detecting the start of the near field communication, halt the image data generating operation until the near field communication unit completes data communication with the device.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: October 6, 2015
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Yasuhiro Asai
  • Patent number: 9093031
    Abstract: A method for modifying an image to be displayed on a display includes receiving an image to be displayed on the display having a backlight and a transmissive panel. A backlight signal is provided to the backlight for causing the backlight to selectively illuminate different portions of the backlight with different characteristics. The characteristics include at least one of a different color and a difference luminance. A panel signal is provided to the panel for causing the transmissive panel to selectively change its transmittivities. At least one of the backlight signal and the panel signal are modified in a manner to reduce off-axis artifacts.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 28, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Louis Joseph Kerofsky, Benjamin John Broughton
  • Patent number: 9035974
    Abstract: In a method and a device for controlling luminance of a display unit to save power of a display device including the display unit for displaying on a screen, the method includes: calculating a second luminance to which the luminance of the display unit is to be changed considering a first luminance that is a current luminance of the display unit and a constant K determined according to Weber's law; and changing the luminance of the display unit to the second luminance.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 19, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byeong-Hwa Choi, Seung-Bae Lee
  • Patent number: 9030384
    Abstract: An OLED panel includes a plurality of pixels. Each pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel spaced from each other by a plurality of baffle plates. The first sub-pixel of each pixel is located adjacent to that of a neighboring pixel. The first sub-pixel of each pixel is spaced from that of the neighboring pixel by a partition plate. The partition plate has a height less than a height of each baffle plate.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 12, 2015
    Assignee: Ye Xin Technology Consulting Co., Ltd.
    Inventors: Jung-An Cheng, Liang-Neng Chien, Wei-Li Wang
  • Patent number: 9030452
    Abstract: The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Gwang Jang, Seok Ha Hong, Joon-Chul Goh, Byung Sun Kim, Sang Mi Kim, Ji Myoung Seo
  • Patent number: 8976096
    Abstract: Provided is a liquid crystal display device which displays each halftone by changing the luminance of pixels during a cycle (F1-F8) composed of a first term (F1-F2), a second term (F3-F4), a third term (F5-F6), and a fourth term (F7-F8).
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: March 10, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masae Kawabata, Fumikazu Shimoshikiryoh, Kentaroh Irie
  • Publication number: 20150062187
    Abstract: A display device and a method for controlling a luminance of the display device are disclosed. The display device includes an average picture level (APL) calculator which calculates an APL of an input image and outputs the APL of the input image and an APL curve data, a luminance adjuster which includes at least two luminance adjusting units enabled in response to a user input through a user interface and reduces a luminance of an APL section equal to or less than a predetermined reference value, a data modulator modulating data of the input image using a luminance defined in the APL curve data, and a display panel driving circuit which writes data from the data modulator on a display panel and reproduces the input image on the display panel.
    Type: Application
    Filed: December 30, 2013
    Publication date: March 5, 2015
    Inventor: Sungjin PARK
  • Patent number: 8970635
    Abstract: The present disclosure is related to the liquid crystal display device and the driving method for selectively controlling the average picture level. The liquid crystal display device of the present disclosure comprises: a brightness extractor separating a brightness and a color difference information from an input image; an user interface receiving a limit APL; an APL restrictor calculating an average APL of the input image based on the brightness from the brightness extractor, modulating the brightness of the input image such that the average APL is restricted lower than the limit APL when the average APL of input image is higher than the limit APL, and converting the modulated brightness and the color difference information into a RGB data; and a driving circuit representing the RGB data from the APL restrictor on a liquid crystal display panel.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Hoyoung Jung
  • Patent number: 8947324
    Abstract: A display apparatus, that can prevent thermal destruction and burning with a simple structure, has been disclosed. In the apparatus it is judged that there is possibility of a pattern, whose area with high brightness is small, being displayed frequently, when a state in which the total light emission pulse number remains large occurs with high frequency, and if such a state is detected, the total light emission pulse number (sustain frequency) is reduced to prevent the thermal destruction and burning.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 3, 2015
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Ayahito Kojima, Shigeki Kameyama, Hirohito Kuriyama, Yoshikazu Kanazawa, Toshio Ueda
  • Patent number: 8947470
    Abstract: In a display apparatus, a display panel is divided into dimming areas and a backlight device includes light source blocks providing light to the dimming areas. Average gray-scale values and maximum gray-scale values respectively corresponding to the dimming areas are generated based on image signals provided to the dimming areas. Whether the average gray-scale values and the maximum gray-scale values are respectively within first and second reference ranges are checked. One of at least two parameters is selected according to a checked result, and representative brightness values respectively corresponding to the dimming areas are determined using the selected parameter. Duty ratios of the light source blocks are controlled based on the representative brightness values. As a result, power consumption is reduced when applying a dimming device to the display apparatus.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Gwang Jang, Tae Kwon Jung, Donghak Pyo, Min Ha Keum, Hak-Mo Choi
  • Patent number: 8890908
    Abstract: A calibration system may be provided for calibrating displays in electronic devices during manufacturing. The calibration system may include calibration computing equipment and a test chamber having a light sensor. The calibration computing equipment may be configured to operate the light sensor and the display to gather display intensity performance data for obtaining a display gamma model. The display intensity performance data may be gathered using a range of display control settings that will be used in performing color calibration operations for the display. The calibration computing equipment may be configured to operate the light sensor and the display to gather display color performance data for determining a display white point calibration. Display white point calibration data may be provided to the electronic device and stored in volatile or non-volatile memory in the device or may be permanently stored in circuitry associated with the display.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: November 18, 2014
    Assignee: Apple Inc.
    Inventors: Jiaying Wu, Gabriel Marcu, Wei Chen, Hopil Bae, Cheng Chen, Ye Yin, Anuj Bhatnagar
  • Patent number: 8866757
    Abstract: This disclosure provides systems, methods and apparatus for a front illumination device with metalized light-turning features. In one aspect, an illumination device includes a light guide having light-turning features that include recesses formed on the light guide and that extend down into the light guide. The recesses may be coated with a material where the material also forms an auxiliary structure outside of the recesses on the light guide. The auxiliary structure may be conductive and may form, for example, an electrode.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: October 21, 2014
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Ion Bita, Stephen P. Dhanens, Evgeni P. Gousev, Kollengode S. Narayanan
  • Patent number: 8864321
    Abstract: A controller or control method may be designed or configured to operate without information about the current temperature of the device and/or the device's environment. Further, in some cases, the controller or control method is designed or configured to control transition of an optical device to an intermediated state between two end states. For example, the controller may be configured to control a transition to a state of transmissivity that is intermediate between two end states of transmissivity. In such case, the device has three or more stable states of transmissivity.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 21, 2014
    Assignee: View, Inc.
    Inventors: Disha Mehtani, Gordon Jack, Anshu Pradhan
  • Patent number: 8861887
    Abstract: According to one embodiment, an image processing apparatus includes a shading correction unit. The shading correction unit executes at least one of the use of shading correction parameters calculated in accordance with exposure information for capturing a subject image and the adjustment of a center position in a two-dimensional direction which is used as the basis of the shading correction in accordance with the exposure information.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shiroshi Kanemitsu, Kazuhiro Tabuchi, Takaaki Kawakami
  • Patent number: 8824828
    Abstract: A method of fusing two images includes adjusting contrast of (a) a visual image and (b) a thermal image. Also included is modifying the adjusted contrast of the thermal image to form output brightness levels, by using a transformation curve, and then displaying both (a) the brightness levels of the thermal image and (b) the adjusted contrast of the visual image. Modifying the adjusted contrast of the thermal image includes using a V-curve as the transformation curve, in which the V-curve includes similar maximum output brightness levels at the coldest and hottest relative temperatures, respectively. The V-curve also includes a minimum output brightness level at a midpoint between the coldest and hottest relative temperatures. Furthermore, the method assigns different hues to the intensity values of the thermal image, ranging from coldest to hottest relative temperatures.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: September 2, 2014
    Assignee: Exelis, Inc.
    Inventor: Stuart Martin Winn
  • Patent number: 8797372
    Abstract: The present invention provides a device and method for controlling screen brightness. The method comprises: a light sensor acquiring a brightness signal intensity value of external environment and transmitting the brightness signal intensity value to a comparator; the comparator comparing the received brightness signal intensity value with a stored brightness signal intensity value and outputting a comparison result to an integrator; if the comparison result is that the received brightness signal intensity value is greater than the stored brightness signal intensity value, the integrator increasing the stored brightness signal intensity value by a fixed value according to the comparison result; and if the comparison result is that the received brightness signal intensity value is less than the stored brightness signal intensity value, the integrator decreasing the stored brightness signal intensity value by a fixed value according to the comparison result.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: August 5, 2014
    Assignee: ZTE Corporation
    Inventor: Zhengrong Liu
  • Patent number: 8791933
    Abstract: A method is provided for driving a plasma display panel having parallel first and second electrodes, third electrodes crossing the first and second electrodes, and discharge cells with electrodes crossing mutually in the form of a matrix. The method includes a reset period during which distribution of wall charges in the discharge cells is uniformed, an addressing period during which wall charges are produced in the discharge cells according to display data, and a sustain discharge period during which sustain discharge is induced in discharge cells in which wall charges are produced during the addressing period. The driving method includes during the reset period, in lines defined by the first and second electrodes, applying a first pulse, in which an applied voltage varies with time to induce first discharge, and applying a second pulse in which an applied voltage varies with time to induce second discharge as an erase discharge.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 29, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Noriaki Setoguchi, Shigeharu Asao, Yoshikazu Kanazawa
  • Patent number: 8773478
    Abstract: An organic light emitting display includes a first display unit having pixels coupled to odd scan and data lines, a second display unit having pixels coupled to even scan and data lines, a third display unit having pixels coupled to the odd scan lines and even data lines, and a fourth display unit having pixels coupled to the even scan lines and odd data lines. A timing controller extracts image data corresponding to each of the display units from inputted image data of one frame. A scan driver sequentially supplies a scan signal to the scan lines in each of four sub-frame periods of one frame period. A data driver converts extracted image data of each of the display units into corresponding data voltages, and supplies the corresponding data voltages to respective ones of the display units through the data lines for respective sub-frame periods of the one frame period.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Cheol Kim, In-Hwan Kim
  • Patent number: 8773476
    Abstract: The present invention provides a technique for supplying appropriate image quality to a user. Upon executing an application, a PC1 outputs an automatic adjustment start signal s1 which is information relating to image quality required for the application, and on the basis of the automatic adjustment start signal s1, a display device 4 adjusts the image quality. Thus, it is possible to display an image with image quality suitable for each of the applications without causing any time-consuming manual operations by the user. Consequently, it is possible to provide appropriate image quality to the user.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: July 8, 2014
    Assignee: NEC—Mitsubishi Electric Visual Systems Corporation
    Inventor: Akira Tobiya
  • Patent number: 8773451
    Abstract: Method and apparatus for adjusting the display characteristics of an electronic display, such as a computer or television display. The display is color corrected, e.g., at the factory, to measure its white point correction, gamma and gray tracking correction, and the gain correction over time as the display warms up. Moreover the white point correction and the gamma correction are performed on a per unit basis for each individual display to be manufactured. The resulting correction parameters are stored in memory or firmware associated with the display. Thereby when the display is in use, it performs compensation for white point, gray tracking and gain correction as the display warms up, each time it is powered up or when its thermal operation conditions change.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: July 8, 2014
    Assignee: Apple Inc.
    Inventors: Gabriel Gheorghe Marcu, Wei Chen, David W. Lum, Jean-Jacques P. Drolet
  • Patent number: 8773364
    Abstract: The invention relates to a method for operating a lighting control console for controlling a lighting system. The console provides a digital processor and memory for generating, managing and storing the adjusting commands. The console also includes a display device and a color palette, including all selectable colors consecutively displayed as color gradients, for selecting a color to be graphically represented at the display device for the user. The display device has a touch-sensitive sensor surface, such that when touching the same within the region of a contact surface, the user can select the digital color parameters of a color from the displayed color palette. The console facilitates the selection of a digital color image and allows the user to select pixels of the color image by touching the touch-sensitive sensor surface. The console further processes color parameter combinations of the pixels selected by the user.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: July 8, 2014
    Assignee: MA Lighting Technology GmbH
    Inventors: Michael Adenau, Hartmut Cordes
  • Patent number: 8743161
    Abstract: A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: June 3, 2014
    Assignee: Apple Inc.
    Inventor: Kai Achim Pantfoerder
  • Patent number: 8717263
    Abstract: The present invention is to provide an LCD unit, an LCD apparatus, and a method of setting a drive voltage of the LCD unit with a simple operation. The LCD unit includes a label pasted on a place of the LCD unit, wherein the label includes an information code, which is information-coded from a data of a drive voltage for achieving the best contrast in optical characteristics of the LCD unit. The best drive voltage to drive the LCD unit with the best contrast is thereby easily set.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: May 6, 2014
    Assignee: Yazaki Corporation
    Inventor: Atsushi Yoshimura
  • Patent number: 8711167
    Abstract: One embodiment of the present invention sets forth a technique for generating and transmitting video frame data from a graphics processing unit (GPU) to a color field sequential display device. A frame buffer image comprising per-pixel packed color channels is transformed to a frame buffer image comprising regions corresponding to the color channels with vertical blanking regions inserted between color sub-field regions. Each region of the transformed frame buffer image is sequentially transmitted to the color field sequential display device for display of the corresponding color channel. Backlight illumination for each color channel is controlled by the GPU for temporal alignment with display of each color channel during a vertical blanking interval. The GPU may compensate an individual pixel's color channel value based on a corresponding previous color channel value in order to minimize crosstalk between neighboring color fields.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 29, 2014
    Assignee: Nvidia Corporation
    Inventor: David Wyatt
  • Patent number: 8704735
    Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 22, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
  • Patent number: 8687024
    Abstract: An active matrix display apparatus comprises plural gate lines and plural source lines that are arranged such that the plural gate lines respectively intersect the plural source lines and light-emitting element circuits, which are provided to respectively correspond to intersections at which the plural gate lines intersect the plural source line. Additionally, each of the light-emitting element circuits includes a light-emitting element for emitting light according to a current supplied thereto, a drive transistor for controlling a current supplied to the light-emitting element, and a control transistor for controlling writing of an image signal to the drive transistor. Furthermore, the drive transistor has a body terminal and is configured to correct luminance of the light-emitting element using a voltage applied to the body terminal.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: April 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Arinobu Kanegae, Shinya Ono, Mika Nakamura
  • Patent number: 8681184
    Abstract: A display unit for binocular representation of a multicolor image including a control unit triggering an imaging element such that the imaging element generates in a temporal successive manner the image to be displayed for a first beam path and a second beam path as a first image and second image, respectively. The images are generated in a pre-distorted manner, opposite of the chromatic aberration of the respective beam path, such that the chromatic aberration generated in the respective beam path is compensated when the first and second image is displayed. The display unit includes a switching module which operates in temporal synchrony with the first and second image being generated, such that a user can see the first image only via the first beam path and the second image only via the second beam path.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: March 25, 2014
    Assignee: Carl Zeiss AG
    Inventors: Markus Seesselberg, Johannes Ruoff
  • Patent number: RE45167
    Abstract: When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 30, 2014
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa