Abstract: A system for determining the detectability of a fleet of vehicles by a listener at a target site. The system receives as input at least the number of vehicles, a selection of a noise signature for each vehicle, and a distance to the target. The system may then estimate noise pressure level for the fleet along the estimated distance from the given location to the target site based on the noise signature associated with each vehicle and display a graph showing the noise pressure level vs. distance from the given location to the target site. In an embodiment, the system may estimate the background noise level at the target site and subtract this from the noise pressure level of the fleet at the target site to determine an expected noise level above background noise at the target site.

Abstract: An icon generating system applied to an electronic device capable of generating a step icon for representing a step of a manufacturing process is provided. The electronic device includes at least one hardware processor. The icon generating system includes a plurality of modules, the icon generating system comprising a plurality of modules executed by the at least one hardware processor, the modules comprise an instruction generating module for generating a description instruction in response to manual operation, a capturing module for capturing a scene graph of a step of the manufacturing process in response to the description instruction, and an icon processing module for generating a step icon according to the scene graph, and adds a step attribute with the step icon for associating the step icon with the step.

Abstract: A system and a method are disclosed for visually displaying data points using charts on a display screen with limited display area. A fish-eye distortion region allows presentation of detailed information for some data points compared to other data points that are displayed. The chart can be moved relative to the distortion region thereby changing the data points displayed within the fish-eye that present additional information. The relative movement between the chart and the distortion region is triggered by different kinds of inputs from the user including, tilting of the device, swiping with a pointing device and selecting a particular data point.

Abstract: Methods for presenting symbolic expressions such as mathematical, scientific, or chemical expressions, formulas, or equations are performed by a computing device. One method includes: displaying a first portion of a symbolic expression within a first area of a display screen; while in a first state in which the first area is selected for aural presentation, aurally presenting first information related to the first portion of the symbolic expression; while in the first state, detecting particular user input; in response to detecting the particular user input, performing the steps of: transitioning from the first state to a second state in which a second area, of the display, is selected for aural presentation; determining second information associated with a second portion, of the symbolic expression, that is displayed within the second area; in response to determining the second information, aurally presenting the second information.

Abstract: According to one embodiment, an electronic apparatus includes a display controller and a processor. The display controller displays a first graphic object of a plurality of graphic objects on a screen. The processor change, if a stroke is handwritten and at least a part of the stroke overlaps with the first graphic object, the first graphic object to a second graphic object which is different from the first graphic object, based on the stroke and the first graphic object. The display controller displays the second graphic object in place of the first graphic object.

Abstract: A method of animating a computer generation of a head, the head having a mouth which moves in accordance with speech to be output by the head, said method comprising: providing an input related to the speech which is to be output by the movement of the lips; dividing said input into a sequence of acoustic units; selecting expression characteristics for the inputted text; converting said sequence of acoustic units to a sequence of image vectors using a statistical model, wherein said model has a plurality of model parameters describing probability distributions which relate an acoustic unit to an image vector, said image vector comprising a plurality of parameters which define a face of said head; and outputting said sequence of image vectors as video such that the mouth of said head moves to mime the speech associated with the input text with the selected expression, wherein a parameter of a predetermined type of each probability distribution in said selected expression is expressed as a weighted sum of pa

Abstract: A method of animating a computer generation of a head, the head having a mouth which moves in accordance with speech to be output by the head, said method comprising: providing an input related to the speech which is to be output by the movement of the mouth; dividing said input into a sequence of acoustic units; selecting an expression to be output by said head; converting said sequence of acoustic units to a sequence of image vectors using a statistical model, wherein said model has a plurality of model parameters describing probability distributions which relate an acoustic unit to an image vector for a selected expression, said image vector comprising a plurality of parameters which define a face of said head; and outputting said sequence of image vectors as video such that the mouth of said head moves to mime the speech associated with the input text with the selected expression, wherein the image parameters define the face of a head using an appearance model comprising a plurality of shape modes and

Abstract: Embodiments of the present invention provide a data transmission method and an electronic device. A first electronic device has a display unit and a second electronic device has a processing unit. The first electronic device and the second electronic device communicate data with each other wirelessly. The first electronic device receives data transmitted from the second electronic device for displaying on the display unit. The display unit of the first electronic device displays at a first display frame rate a data transmitted from the second electronic device in a first mode. The first electronic device transmits, upon detecting a first trigger event, information associated with the first trigger event to the second electronic device. The first electronic device receives and displays a data transmitted from the second electronic device in a second mode. These two electronic devices can be automatically switched between the two display frame rates and the two modes in response to the first trigger event.

Abstract: According to one embodiment, an information processing apparatus includes a main body, a display, a graphics processor, a measuring module, and a storing module. The graphics processor, in the main body, configured to cause the display to display one of wallpapers. The measuring module is configured to measure an amount of power supplied to the main body and the display. The storing module is configured to store amounts of power corresponding to the wallpapers.

Abstract: An information processing device for reducing the time required for the data transfer as much as possible while displaying information of the data transfer state in synchronization with the data transfer. The information processing device is equipped with a counter for counting the number of pieces of data having been transferred in a data transfer. When a large number of pieces of data is to be transferred in the data transfer, the number of pieces of data having been transferred is displayed every time a certain number of pieces of data, not one piece of data, are transferred.

Abstract: This disclosure provides systems, methods and apparatus for a thin film transistor (TFT) device on a substrate. In one aspect, the TFT device includes a gate electrode, an oxide semiconductor layer, and a gate insulator between the gate electrode and the oxide semiconductor layer. The oxide semiconductor layer includes at least two metal oxides, with the two metal oxides having a varying concentration relative to one another between a lower surface and an upper surface of the oxide semiconductor layer. The TFT device also includes a source metal adjacent to a portion of the oxide semiconductor layer and a drain metal adjacent to another portion of the oxide semiconductor layer. The composition of the oxide semiconductor layer can be precisely controlled by a sequential deposition technique using atomic layer deposition (ALD).

Abstract: This disclosure provides systems, methods and apparatus for reducing image artifacts that arise when a display is exposed to sunlight over time. Various implementations disclosed herein can be implemented to prevent charge injection from inducing a negative offset voltage shift for display elements in the display. In one aspect, a buffer layer is applied to block electrons from being photoelectrically ejected from a movable reflective layer of a display element and into a stationary optical stack of the display element.

Abstract: The present invention provides an image processing device, including a buffering unit, a minifying unit, a synchronous dynamic random access memory (SDRAM), an overdriving unit, a comparing unit, a restoring unit, and an output controlling unit. The present invention further provides an image processing method and a liquid crystal display incorporated with the image processing device. The image processing device, the image processing method, and the liquid crystal display incorporated with the image processing device will not only directly perform the overdrive-processing of an input high-resolution image, but will also, on the one hand caches an input high-resolution image by the buffering unit, and on the other hand minifies an input high-resolution image. As a result, the image data is already reduced when the overdrive-processing performs, and the consumption of the space of the SDRAM is also accordingly reduced.

Abstract: A mapping between a business object and a corresponding visual representation of the business object may be read. The mapping may include a relationship between the business object's attributes and the visual representation's visual attributes. The mapping may include a relationship between the business object's attribute values and the visual representation's visual attribute values. The visual representation may be displayed on a graphical user interface based on the mapping.

Abstract: Methods are provided for assessing potentially compromising situations of a utility company. One or more source displays of a site are accessed. A fly-out or data lensing is used to bring forward a portion of the source displays. The fly-out or data lensing is used to draw attention to a potentially compromising situation and direct the operator's attention without loosing perspective of a whole power system of the utility company.

Abstract: When encoding an array of texture data elements to be used in a graphics processing system, the array of texture data elements is divided into a plurality of non-rectangular sub-sets of texture data elements, and each non-rectangular sub-set of texture data elements that the texture has been divided into is then encoded to generate an encoded texture data block representing that non-rectangular sub-set of the texture data elements, to thereby provide a set of encoded texture data blocks representing the texture.

Abstract: A method for compensating the brightness of a liquid crystal module involves acquiring an image of a liquid crystal module to obtain the acquired image. The acquired image of the liquid crystal module is compared with a standard image to find a dark region. The compensation coefficient of each pixel in the dark region is calculated. In a display control circuit of the liquid crystal module, the calculated compensation coefficient of pixels is stored for compensating the backlight unit corresponding to pixels in dark region.

Abstract: A measurement position determination apparatus includes a creation unit, a measurement unit, and a determination unit. The creation unit creates display image data for displaying a reference image and a comparison image on a display screen. The reference image includes one achromatic image, and the comparison image is formed by arranging two or more images including a chromatic image. The measurement unit measures the reference image and the comparison image in a sub-area on the display screen. The reference image and the comparison image are displayed on the display screen in accordance with the display image data. The determination unit determines a measurement position of the measurement unit on the display screen in accordance with measurement results obtained by measurement of the reference image and the comparison image using the measurement unit.

Abstract: Methods and systems for rendering an electronic greeting card to a portable computing device, wherein the visually-perceived light effects of the electronic greeting card are updated in real time. The electronic greeting card is dynamically rendered to the portable computing device including these dynamic light effects.

Abstract: A method and device for efficiently simulating lens flares produced by an optical system is provided. The method comprises the steps of—Simulating paths of rays from a light source through the optical system, the rays representing light; and Estimating, for points in a sensor plane, an irradiance, based on intersections of the simulated paths with the sensor plane.

Abstract: A method and system for providing a visualization of energy data. In one embodiment, the method comprises establishing an energy visualization scale for visually depicting energy data in terms of one or more color parameters, where the energy data pertains to a distributed generator (DG); and generating a display image, based on the energy visualization scale, that depicts a plurality of energy data values in a grid layout across two dimensions in time.

Abstract: A method for gradually adjusting screen brightness when switching an operating system is provided. The method is used for gradually adjusting, the brightness of a screen of an electronic device by a controller thereof when the electronic device is switched from to first operating system to a second operating system. First, an operating system switching signal is received. Then, a first brightness value of the first operating system is obtained. The screen brightness is gradually adjusted from the first brightness value to a predetermined second brightness value. Afterwards, the first operating system is switched to the second operating system, and the screen brightness is further adjusted from the second brightness value back to the first brightness value. Accordingly, a user can sense the switching of the operating system more intuitively and has enough time to get used to the change of the screen brightness and the displayed frame.

Abstract: An image processing apparatus comprises a receiver (201) for receiving an image signal which comprises at least an encoded image and a target display reference. The target display reference is indicative of a dynamic range of a target display for which the encoded image is encoded. A dynamic range processor (203) generates an output image by applying a dynamic range transform to the encoded image in response to the target display reference. An output (205) then outputs an output image signal comprising the output image, e.g. to a suitable display. The dynamic range transform may furthermore be performed in response to a display dynamic range indication received from a display. The invention may be used to generate an improved High Dynamic Range (HDR) image from e.g. a Low Dynamic Range (LDR) image, or vice versa.

Abstract: An image processing apparatus includes an acquisition unit, a memory, and a preparation unit. The acquisition unit acquires, from a display device that displays an image on a display screen, device information peculiar to the display device. The memory stores reference data used to prepare a reference image to be displayed by the display device. The preparation unit prepares output image data including the reference image using the device information acquired by the acquisition unit and the reference data read from the memory to output the output image data to the display device.

Abstract: The display device includes a display component, a storage component, and a processing component. The storage component is configured to store a plurality of index tables. Each index table includes a plurality of input-output-pairs. Each input-output-pair corresponds to a plurality of sub-pixel coordinate values, and a plurality of color component values. The processing component is configured to receive and correspond to a user command, to search a corresponding index table from the index tables, to search a corresponding input-output-pair from the input-output-pairs in the corresponding index table, and to provide some of the sub-pixel coordinate values and some of the color component values corresponding to the corresponding input-output-pair to the display component. The display component is configured to display an image according to the some of the sub-pixel coordinate values and the some of the color component values corresponding to the corresponding input-output-pair.

Abstract: A method for rendering a page including: obtaining an electronic document (ED) having: a container object with a first member and a second member; multiple shadow parameters defining a shadow of the container object; and multiple shadow parameters defining a shadow of solely the first member; determining a main bounding box surrounding the container object on the page but excluding the shadow of the first member; creating a main brush having the container object but excluding the shadow of the first member; calculating a shadow bounding box based on the main bounding box surrounding the container; creating a shadow brush by applying a shadow transformation matrix to the main brush having the container object; outputting the shadow of the first container object to a framebuffer for the page; and outputting, by processing the first member, the first member and the shadow of the first member to the framebuffer.

Abstract: An image processing apparatus includes an image information transmission unit, a color information acquisition unit, and a conversion relationship creation unit. The image information transmission unit transmits, to a display device, pieces of color-conversion image information representing images used for performing color conversion for the display device, in ascending order of lightness of the images in a predetermined color space. The color information acquisition unit acquires color information of each image that is displayed on the display device in accordance with a corresponding piece of color-conversion image information among the pieces of color-conversion image information that have been transmitted by the image information transmission unit. The conversion relationship creation unit creates, on the basis of the color information that has been acquired by the color information acquisition unit, a conversion relationship for a color of an image to be displayed on the display device.

Abstract: A wearable electronic device and a display method are described. The wearable electronic device includes a fix unit, by which the wearable electronic device can maintain a position relationship with respect to a first part of a user body; a detection unit, configured to detect a posture of the first part of the user body, and to acquire a detection result; a posture determination unit, configured to determine whether the detection result meets a predetermined acquisition condition; a first acquisition unit, configured to acquire weather information when the posture determination unit determines that the detection result meets a predetermined acquisition condition; an image generation unit, configured to generate a weather image corresponding to the weather information; and a display unit, configured to display the weather information and/or the weather image.

Abstract: A mobile terminal (200) obtains image data related to a product posted on a flier (300) by imaging and sends the image data related to the product to a shopping management server (100). Upon reception of the image data related to the product from the mobile terminal (200), the shopping management server (100) determines the product by analyzing the image data related to the product, obtains at least one of inventory information and sales information of the product, and sends at least one of the inventory information and the sales information of the product to the mobile terminal (200). The mobile terminal (200) combines computer-graphics image data indicating at least one of the inventory information and the sales information of the product sent from the shopping management server (100) with an image of the flier in real space and presents the combined image, thereby solving the problem.

Abstract: A system and method for label placement is disclosed that achieves the twin goals of practical efficiency and high labeling quality by employing cartographic heuristics. A caller defines map and label properties. Then labels are pulled within a map boundary. Labels are next ordered by priority in descending importance. The order of testing labels is determined. Attempts are made to move overlapping labels. This is an iterative process; therefore there must be criteria that halt the procedure. Upon reaching an acceptable solution, the label properties are adjusted to reflect the new label placements.

Abstract: Systems and methods for selectively augmenting an electronic media file with additional content responsive to the user viewing portions of the electronic media file are provided. The system includes a computing device with a display for playing an electronic media file that includes portions that are augmentable with additional content. The system also includes a camera and image processing software to track the focus of the user's eyes on the display while looking at the electronic media file. The system can determine whether the focus of user eyes corresponds to an augmentable portion of the electronic media file and augment the electronic media file by playing additional content to the user, and then continue playing the electronic media file.

Abstract: Embodiments of the invention include a method, a system, and a mobile device that incorporate augmented reality technology into land surveying, 3D laser scanning, and digital modeling processes. By incorporating the augmented reality technology, a 3D digital model of internal elements concealed behind an external element can be visualized on a live view, aligned to the orientation and scale of the scene displayed on the mobile device. In an embodiment, a marker can be placed at a predetermined set of coordinates on the external element, determined by surveying equipment. The 3D digital model of the internal elements can be retrieved by the mobile device and overlaid in relation to the marker position, orientation, and size so that it is seen at a calculated distance in depth behind the external element as they would exist hidden behind the external element in the real environment.

Abstract: A computer-implemented method for two-dimensional code augmented reality includes: detecting an image capture of a two-dimensional code through a camera video frame; identifying the contour of the two-dimensional code captured in the camera video frame; decoding the information embedded in the detected two-dimensional code; obtaining content information corresponding to the decoded two-dimensional code; tracking the identified contour of the two-dimensional code within the camera video frame to obtain the position information of the two-dimensional code in the camera video frame; performing augmented reality processing on the two-dimensional code based on the content information and the position information; and generating the augmented reality on the device while simultaneously displaying real-world imagery on the display of the device, wherein any visual augmented reality is displayed in accordance with the location of the two-dimensional code in the video frame.

Abstract: Disclosed are an electronic device and a method for selecting augmented content that selectively augment various types of content with respect to a real object using a marker. The electronic device providing augmented reality, comprising: a memory storing at least one content group, wherein each of the at least one content group includes a plurality of virtual objects; a display; and a controller configured to: capture, via the camera, an image including a real object and a marker, obtain identification information on the real object based on the image, obtain angle information reflecting an orientation of the marker with respect to the real object using the image, determine a specific content group from the at least one content group based on the identification information, select a specific virtual object among the virtual objects include in the specific content group based on the angle information, and augment, via the display, the specific virtual object.

Abstract: A mobile terminal (200) obtains image data related to a product posted on a flier (300) by imaging and sends the image data related to the product to a shopping management server (100). Upon reception of the image data related to the product from the mobile terminal (200), the shopping management server (100) determines the product by analyzing the image data related to the product, obtains at least one of inventory information and sales information of the product, and sends at least one of the inventory information and the sales information of the product to the mobile terminal (200). The mobile terminal (200) combines computer-graphics image data indicating at least one of the inventory information and the sales information of the product sent from the shopping management server (100) with an image of the flier in real space and presents the combined image, thereby solving the problem.

Abstract: The present document describes a method for controlling an output presented on a visual display of a portable computing device having an orientation, the portable computing device comprising a memory on which is stored visual content comprising at least one of graphics data, photo data and video data, and text content substantially comprising text data, the text content further comprising a visual content indicator indicative of the existence of the visual content, the method comprising: detecting the orientation of the portable computing device as corresponding to one of a first display mode and a second display mode; in the orientation corresponding to the first display mode, presenting the text content on the visual display in the first display mode; in the presence of the visual content indicator, detecting a change of the orientation corresponding to the first display mode to the orientation corresponding to the second display mode; and in the orientation corresponding to the second display mode, present

Abstract: An information display device includes: a selecting condition acquisition unit that externally acquires selecting condition information including a selecting condition for selecting an image file; a selection unit that selects at least one image file out of a plurality of image files stored in an external storage device on the basis of the selecting condition information; a reduced image generating unit that generates a reduced image representing the at least one selected image file; and a display control unit that causes the reduced image of each of the at least one selected image file to be displayed.

Abstract: Disclosed is an icon generation method, comprising: adjusting an original icon to a preset size for a certain resolution environment; determining statistics for the color values of all pixels of the original icon and calculating a dominant hue of the original icon; generating a background color based on a hue angle of the dominant hue and preset values of color saturation and brightness; applying the background color to a preset color gradient template to generate an icon background; cutting the adjusted icon by using a preset icon edge cutting template; and combining the icon background, the cut icon, and a preset icon foreground template to generate a final icon. Through the disclosed solution, new icons complying with a unified system style can be generated, and content consistency of the new icons can be best ensured.

Abstract: An information processing apparatus includes an obtaining unit configured to obtain information regarding a size of a display screen of a display terminal that displays reflow format document data including a font with a set font size, a determining unit configured to determine whether the size of the display screen obtained from the information differs from a predetermined size, a setting unit configured to, if determined that the size of the display screen differs from the predetermined size, set the font size to a size determined based on the set font size, the size of the display screen, and the predetermined size, and if not determined that the size of the display screen differs from the predetermined size, keep the font size at the set font size, and a controlling unit configured to control the display screen to display the font at the font size set by the setting unit.

Abstract: This disclosure provides systems, methods and apparatus for providing relatively thinner and less stiff compliant beams for a shutter assembly. A protective coating is deposited and patterned over the shutter assembly before it is released from a sacrificial mold over which the shutter assembly is formed. Because some primary surfaces of the compliant beams are in contact with the sacrificial mold, these primary surfaces are not coated with the protective coating. Therefore, when the shutter assembly is finally released, the resulting compliant beams are relatively thinner and less stiff providing a reduction in an actuation voltage used to operate the shutter assembly. In some instances, the protective coating is patterned into discontinuous segments before release.

Abstract: Provided is a driving device of an image display medium including a voltage application unit that varies a voltage applied to a common electrode provided in one of a pair of substrates, and applies a voltage to a pixel electrode provided in the other substrate through active matrix driving, with respect to the image display medium including plural kinds of particles, and a controller that controls the voltage application unit such that a voltage is applied between the pair of substrates, and controls the voltage application unit such that a deviation time of a scanning timing generated due to the active matrix driving during transition to the steps and a potential difference between the pair of substrates in the deviation time are equal to or less than predefined threshold characteristics of the particles.

Abstract: Display elements of a display array include at least one fixed layer and a movable layer. The movable layer is positioned with respect to the at least one fixed layer by placing a charge on the movable layer and applying a voltage to the at least one fixed layer. The at least one fixed layer may be two layers positioned on either side of the movable layer. The movable layer may be positioned in a desired position when driving an array of display elements by executing a reset stage, a charging stage, and a bias stage.

Abstract: In an organic light emitting display including a pixel, and a method of driving the same, the pixel includes an organic light emitting diode (OLED), a storage capacitor coupled between a first power supply and a first node, a first transistor for controlling a current that flows from the first power supply to a second power supply through the OLED in response to a voltage applied to the first node, a second transistor coupled between a data line and a first electrode of the first transistor and turned on when a control signal is supplied through a control line, a third transistor coupled between the first node and a second electrode of the first transistor and turned on when a scan signal is supplied through an nth (n is a natural number) scan line, and a fourth transistor coupled between an initializing power supply and the first node and turned on when the scan signal is supplied through an (n-1)th scan line.

Abstract: The present invention provides a liquid crystal display device including gate lines extending on a substrate; data lines crossing the gate lines to define a plurality of pixels; a thin film transistor in each pixel; and a liquid crystal capacitor in each pixel region, an electrode of the liquid crystal capacitor is connected to the thin film transistor, wherein the thin film transistors of a (2a?1)th pixel and a (2a)th pixel in a (2b)th pixel column share a (2a)th gate line, and the thin film transistors in a (2a)th pixel and a (2a+1)th pixel in a (2b+1)th pixel column share a (2b+1)th gate line, and wherein each of a and b is a positive integer.

Abstract: A display device includes a light modulation device, a light source, a light modulation device control section, and a light source control section. The light modulation device control section controls the light modulation device to select a plurality of scan lines of the light modulation device by K lines (K is an integer not smaller than 2), and write a data signal into the pixels corresponding to the selected scan lines in an image update period, and to select at least a part of the plurality of scan lines line by line, and then write the data signal into the pixels corresponding to the selected scan line in an image display period subsequent to the image update period. The light source control section sets a duty ratio in a part of the image display period to be higher than the duty ratio in another part of the image display period.

Abstract: Method and apparatus are provided for determining and adjusting drive values for a display comprising light source modulation layer such as a backlight array of LED and a display modulation layer such as an LCD panel. Image regions for which any of the display modulation layer drive values are above a predetermined threshold maximum value or below a predetermined threshold minimum value are flagged. The light source modulation layer control values determined for a subsequent frame of image data may be adjusted based on the flagged image regions. The adjustments to the light source modulation layer control values may reduce artifacts in the displayed image and increase the efficiency of the display.

Abstract: A pixel circuit includes: a switching transistor whose conduction is controlled by a drive signal supplied to the control terminal; a drive wiring adapted to propagate the drive signal; and a data wiring adapted to propagate a data signal. The drive wiring is formed on a first wiring layer and connected to the control terminal of the switching transistor. The data wiring is formed on a second wiring layer and connected to a first terminal of the switching transistor. A multi-layered wiring structure is used so that the second wiring layer is formed on a layer different from that on which the first wiring layer is formed.

Abstract: An object of the present invention is to reduce noise during three-dimensional display without increasing memory capacity in a liquid crystal display apparatus capable of displaying an image in two display modes of a 2D mode (two-dimensional display) and a 3D mode (three-dimensional display). In an SDRAM as a volatile memory provided in a timing controller IC, data necessary for a correcting process to an input image signal is stored as follows. Overdrive data is compressed at a relatively high compression degree in the 2D mode and is compressed at a relatively low compression degree in the 3D mode, and the compressed data is stored into the SDRAM. Display unevenness correction data is compressed at a relatively low compression degree in the 2D mode and is compressed at a relatively high compression degree in the 3D mode, and the compressed data is stored into the SDRAM.

Abstract: There are provided a display apparatus, a display system and a control method of the display apparatus. The display apparatus includes: a display unit; an image processing unit which processes an input image signal for display through the display unit; and a controller which determines whether the image signal corresponds to a two-dimensional (2D) image or a three-dimensional (3D) image and adjusts, if it is determined that the image signal corresponds to the 3D image, a brightness level of an image to be displayed differently from a brightness level corresponding to the 2D image.

Abstract: A circuit and method of driving a display panel requiring gray scale control wherein the voltage applied to a row of pixels is equal to the sum of voltages of opposite sign with respect to ground applied respectively to the row electrode and column electrodes whose intersection with the row defines the pixels. Gray scale is realized through modulation of the voltage applied to the column electrodes. Typically for video application, 256 individual gray levels are required corresponding to luminance levels ranging from zero (no emissive luminance) to full luminance. The required luminance for each gray level is not a linear function of the gray level number but rather corresponds to an approximate quadratic function of this number. The present invention facilitates generation of luminance values for each gray level that approximates this functional dependence (i.e. Gamma corrected) with a non-linear voltage ramp terminated by a digital clock having 256 (8 bit) resolution.