Abstract: A touch-sensitive device for use as an electronic input device for controlling by scrolling the visible portion of a document or image relative to a display. The device can include various improved configurations such as physically separate opposed input surfaces at opposite longitudinal ends and/or lateral sides. The end regions of a touch sensitive surface may be rounded and/or tapered to provide relative positional feedback to the user. Tactile positional feedback can also include surface texture changes on the scrolling area and/or changes in the surface of the frame in the region immediately adjacent the scrolling area. The touch sensitive areas may be provided within a split alphanumeric section of an ergonomic keyboard to enable scrolling without the user having to remove his or her hands from the alphanumeric section.

Abstract: Disclosed herein includes a module and an optical detection device comprising the same for determining a touch position on a screen caused by an object, such as a finger of a user or a stylus pen.

Abstract: The invention discloses an optical sensing screen for selectively sensing an object and a light pen. A first photo-emitter is disposed in a light pen for emitting a first light. The optical sensing screen includes a panel, an illuminating device, at least two first photo-sensing devices, and a processor. The illuminating device is used to form a background light source. The first photo-sensing devices are used to detect the first light and the background light source. The processor is capable of calculating the coordinate of the object according to the interdicted background light source. When any of the first photo-sensing devices detects the light pen, the processor will drive the illuminating device not to form the background light source and to calculate the coordinate of the first photo-emitter according to the detected first light.

Abstract: A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. The processor can be configured to carry out a calibration routine utilizing a single touch point in order to determine a plane corresponding to the touch surface by using mirror images of the features adjacent the touch surface, images of the features, and/or based on the touch point and a normal to the reflective plane defined by an image of the object and its mirror image.

Abstract: Disclosed herein are optical detection systems and modules thereof. The optical detection system is used for determining a location where an object contacts a detection area.

Abstract: A method (200) of controlling a liquid crystal display (LCD) (110) integrated within a sensing device for operation in cold temperature is provided. The method (200) includes providing electrical power to the LCD (110), providing an electrical signal to the LCD (110) to update displayed information, measuring (206) the ambient temperature proximate the LCD (110) and making adjustments to the power and update information supplied to the LCD (110) based on the ambient temperature. Another aspect of the invention includes a field device (10) including an LCD (110), an electronic control module (120) configured to provide power and communication signals to the LCD (110), and a temperature sensor (112) coupled to the electronic control module (120). The electronic control module (120) is configured to measure the temperature proximate the LCD (110) and control power and communication supplied to the LCD (110) based on the temperature at the LCD (110).

Abstract: In an active-matrix display device using a three-terminal element (10) for a selection element (10) of a pixel (PIX), a conduction control terminal (11) of the three terminal element (10) is formed by using wiring (12) extended from a scanning signal line (GL) to the pixel (PIX) through the area of a pixel (PIX) other than the pixel (PIX) which is the pixel (PIX) selected by the (three) terminal element (10). This provides the realization of a display device which is hardly likely to produce a feed-through effect.

Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus comprising a plasma display panel having a display area for displaying images and a non-display area disposed at an outer side of the display area, comprises a first electrode, a second electrode, and a third electrode. The first electrode is formed on the display area and the non-display area of an upper substrate. The second electrode forms a pair with the first electrode and is formed in the display area. The third electrode is electrically insulated from the second electrode and formed in the non-display area.

Abstract: A plasma display panel (PDP) having high efficiency includes a front substrate and a rear substrate facing each other; element portions interposed between the front and rear substrates, and including a first element and a second element disposed in both sides of a main discharge space and a third and a fourth element respectively having a narrow width and protruding on the first element and the second element, wherein the first and second elements, and the third and fourth elements partition stepped spaces along a stepped surface in the main discharge space; sustain electrode pairs alternately disposed on the front substrate, extending along a first direction and causing mutual discharge; dielectric layers which are formed on the front substrate to cover the sustain electrode pairs and in which grooves are formed along a direction that is substantially perpendicular to the first direction; and address electrodes formed on the rear substrate and extending in a second direction that crosses the first direction.

Abstract: In a plasma display panel apparatus, luminance when a display state of a panel is all-black (all pixels display black throughout one field period) is reduced. In a first period (t7 to t8), in which a first ramp waveform (RW2) dropping from a first potential to a second potential (?Vad+Vset2) is applied to a plurality of scan electrodes (SCi), within a setup period, a second ramp waveform dropping from a third potential (Ve1) to a fourth potential (Ve1?Vf2) is applied to a plurality of sustain electrodes (SUi) in a second period (t7a to t8) in the case of not all-black, and a third ramp waveform (RW40) dropping from the third potential (Ve1) to a fifth potential (Ve1?Vf2?Vu) is applied to the plurality of sustain electrodes (SUi) in a third period (t7x to t8) which is longer than the second period (t7a to t8) in the case of all-black. In addition, a scan pulse (Pa) is not applied to the plurality of scan electrodes (SCi) in a write period in the case of all-black.

Abstract: An LCD device and a driving method thereof are disclosed. The LCD device and the driving method thereof accurately recognize an input pattern and perform the operation of any one of several inversion systems corresponding to the recognized pattern. Also, the LCD device and the driving method thereof detects the priority order of at least two different patterns and perform the operation of an optimized inversion system, even though at least two different patterns input.

Abstract: An objective of the present invention is to prevent the occurrence of horizontal streaks in a screen of a display device that implements pseudo impulse display by performing black insertion. In a display device that implements pseudo impulse display by performing black insertion, a gate driver applies to each gate bus line a scanning signal including a pixel data write pulse (Pw) for writing pixel data to a pixel formation portion and black voltage application pulses (Pb) for writing a black voltage, based on a gate output control signal (GOE). Here, when the polarity of a polarity control signal (REV) is the same for two consecutive horizontal scanning periods, the gate output control signal (GOE) is maintained at a high level. When the gate output control signal (GOE) is at a high level, the gate driver inhibits a black voltage application pulse (Pb) from being generated in all the scanning signals.

Abstract: A display system, a driver for driving the display array, method of operating the display system and a pixel circuit in the display system are provided. The driver includes: a bidirectional current source having a convertor coupling to a time-variant voltage, for converting the time-variant voltage to the current. The pixel circuit includes: a transistor for providing a pixel current to a light emitting device; and a storage capacitor electrically coupling to the transistor, the capacitor coupling to a time-variant voltage in a predetermined timing for providing a current based on the time-variant voltage.

Abstract: A driving circuit includes a pair of first amplifiers and a pair of second amplifiers for amplifying output signal of the first amplifiers. The input signal of any one of the pair of second amplifiers is input by passing through any one of the pair of first amplifiers. The input signal of the other one of the pair of second amplifiers is input by passing through the other one of the pair of first amplifiers.

Abstract: Having a low-cost transparent electrode, the plasma display panel suppresses variations in discharge characteristics between discharge cells and provides high quality image. To attain above, a scan electrode has a scan transparent electrode formed by applying a dispersion liquid containing particles of metal or metal oxide onto a front substrate, and a scan bus electrode on the front substrate. A sustain electrode has a sustain transparent electrode formed by applying a dispersion liquid containing particles of metal or particles of metal oxide onto the front substrate, and a sustain bus electrode on the front substrate. Besides, a discharge gap is formed by a scan bus electrode and a sustain bus electrode. An outer periphery section on a discharge-gap side of a scan transparent electrode overlaps with a scan bus electrode, and an outer periphery section on a discharge-gap side of a sustain transparent electrode overlaps with a sustain bus electrode.

Abstract: The present invention relates to a microplasma current switch enabling to increase the amount of electric current passing through the microplasma current switch by adjusting the areas of electrodes exposed to plasmas. The present invention includes a plasma discharge space; a plasma generating means installed within the plasma discharge space; an exposed cathode electrode installed within the plasma discharge space; and an exposed anode electrode installed within the plasma discharge space apart from the exposed cathode electrode, wherein the exposed anode electrode is connected electrically to the exposed cathode electrode by generating a plasma, and the exposed area of the exposed anode electrode to the plasma is smaller than that of the exposed cathode electrode.

Abstract: An apparatus for driving an electrophoretic display unit includes: a current detector that detects a driving current supplied to or flowing out from the electrophoretic display unit and outputs a detection value corresponding to the driving current; a conversion unit that converts the detection value into a corresponding temperature equivalent value; and a driver that generates a driving control signal of the electrophoretic display unit based on the temperature equivalent value.

Abstract: The invention provides an electro-optical device in which a voltage drop due to the wiring resistance of a cathode is reduced and therefore steady image signals are transmitted such that erroneous image display, such as low contrast, is reduced or prevented. The invention also provides an electronic apparatus including such an electro-optical device. An electro-optical device includes red, green, and blue luminescent power-supply lines to apply currents to light-emitting elements arranged in an actual display region in a matrix; and a cathode line disposed between the light-emitting elements and a cathode. The cathode line has a width larger than a width of red, green, and blue luminescent power-supply lines.

Abstract: A method of driving a plasma display panel including a scan electrode and a sustain electrode positioned substantially parallel to each other and an address electrode crossing the scan electrode and the sustain electrode is provided. The method includes supplying a first reset signal to the scan electrode during a reset period of at least one of a plurality of subfields of a frame, and supplying a second reset signal following the first reset signal to the scan electrode. The first and second reset signals each include a rising signal with a gradually rising voltage and a falling signal with a gradually falling voltage. The number of falling signals of the first reset signal is different from the number of falling signals of the second reset signal.

Abstract: A display panel includes a gate driving circuit, a plurality of gate lines, a plurality of data lines and a dummy gate line. The gate driving circuit is disposed in a peripheral area surrounding a display area. The gate lines are disposed in the display area and receive a plurality of gate signals sequentially outputted from the gate driving circuit. The data lines are disposed in the display area and cross the gate lines. The dummy gate line is disposed adjacent to the last gate line of the gate lines and receives a dummy gate signal transmitted from an external device. Thus, a dummy gate line is adjacent to the last gate line and a pixel electrode connected to the last gate line is affected by a dummy gate signal applied to the dummy gate line.

Abstract: A gate driving circuit includes a plurality of stages connected to each other. An m-th stage (‘m’ is a natural number) of the stages includes a pull-up part, a pull-down part, a first holding part and a second holding part. The pull-up part outputs a high voltage of a clock signal as a high voltage of an m-th gate signal in response to a high voltage applied to a first output control part. The pull-down part pulls down the high voltage of the m-th gate signal to a first low voltage in response to a high voltage of an (m+1)-th gate signal. The first holding part holds a voltage applied to the first output control part as a second low voltage having a level lower than the first low voltage. The second holding part holds a low voltage of the m-th gate signal to the first low voltage.

Abstract: A booster circuit has: a charge pump configured to perform a booster operation that boosts a voltage supplied from an external power source and outputs the boosted voltage as an output voltage through an output capacitor; and a feedback circuit section configured to control the booster operation depending on the output voltage. A mode of the booster operation includes: a charge mode that charges the output capacitor with the voltage supplied from the external power source; and a discharge mode that discharges the output capacitor. The mode of the booster operation is switched between the charge mode and the discharge mode depending on the output voltage. The feedback circuit section has a booster operation control section that secures a period during which the mode is not switched between the charge mode and the discharge mode in accordance with an external synchronizing signal.

Abstract: A driving apparatus for driving a liquid crystal display panel includes a timing controller, a plurality of pairs of transmission lines, a plurality of source driving circuits, a plurality of terminal resistors, and a plurality of auxiliary resistors. The timing controller functions to generate a plurality of differential signals outputted via a plurality of output ports. Each output port includes two output ends for outputting a corresponding differential signal. Each pair of transmission lines is coupled to the timing controller for receiving a corresponding differential signal. Each source driving circuit is coupled to the pairs of transmission lines for receiving the differential signals so as to generate a plurality of data signals. Each terminal resistor is coupled between two terminals of a corresponding pair of transmission lines. Each auxiliary resistor is coupled between two output ends of a corresponding output port of the timing controller.

Abstract: A reflective liquid crystal on silicon (LCOS) display comprises a transparent substrate, a reflective substrate, and liquid crystal fluid between the substrates. The LCOS display further comprises a matrix of pixels, arranged in a plurality of rows and columns, wherein an intersection of a row and a column defines a position of a pixel in the matrix. The LCOS display has tilt angles sufficient to overcome disclinations due to fringe fields, and, at the same time, achieves high contrast. The surface azimuthal direction of the molecules of the liquid crystal fluid is either substantially parallel or perpendicular to the direction of polarization of incoming incident linearly polarized light. Light leakage is minimal because the effective birefringence as seen by the incoming incident linearly polarized light is substantially zero and does not depend on the pretilt of the molecules of the liquid crystal fluid.

Abstract: A plasma display device and a method of driving the same according to the black load of a displayed image. The plasma display device includes a plurality of first electrodes and a plurality of second electrodes extending in parallel, a plurality of pixels each having a plurality of discharge cells defined by the first and the second electrodes, a driver adapted to apply a first reset waveform to the first electrodes and a second reset waveform to the second electrodes during a reset period, and a controller adapted to adjust at least one of a voltage of the first reset waveform or a voltage of the second reset waveform in accordance with a black load of an image signal corresponding to the plurality of pixels.

Abstract: A surface light source device, which may perform surface light emission using a plurality of light guide members while suppressing formation of emission lines, and a display device using the surface light source device is provided. The surface light source device includes light sources, and a plurality of light guide members, each light guide member having a light incidence surface for light entering from each of the light sources, and making surface light emission based on incident light from the light incidence surface. The plurality of light guide members are arranged on the same plane, and each light guide member has tapered or curved surfaces adjacent to the light incidence surface, each tapered or curved surface having a predetermined angle against the light incidence surface.

Abstract: A liquid crystal display apparatus includes a plurality of pixels arranged in a matrix shape and a drive circuit for actively driving the plurality of pixels. Each of the pixels has a laminated structure including a pixel electrode, a first alignment film, a liquid crystal layer, a second alignment film, and a counter electrode. The liquid crystal layer includes a liquid crystal molecule having a vertical alignment property. The first alignment film and the second alignment film are inorganic alignment films formed by obliquely depositing an inorganic material. The drive circuit has a first calculation section for extracting a first positional information, a second calculation section for extracting a second positional information, a third calculation for calculating a third positional information, and a fourth calculation section for calculating a third video signal.

Abstract: A driving circuit according to an embodiment of the present invention includes an input terminal, unit circuits connected to the input terminal, and output terminals electrically connected to the input terminals. Each of the unit circuits is enabled in response to a control signal inputted via the input terminal.

Abstract: Method and system for combining a 2D image with a 3D point cloud for improved visualization of a common scene as well as interpretation of the success of the registration process. The resulting fused data contains the combined information from the original 3D point cloud and the information from the 2D image. The original 3D point cloud data is color coded in accordance with a color map tagging process. By fusing data from different sensors, the resulting scene has several useful attributes relating to battle space awareness, target identification, change detection within a rendered scene, and determination of registration success.

Abstract: A system for creating a personalized 3D animated effigy, wherein the system comprises a web server configured to receive personal configuration data from a user interface and a production server configured to create the personalized 3D aminated effigy, wherein personal configuration data received by the web server is processed by the production server to create a whole body model of the personalized 3D animated effigy in combination with a 3D background.

Abstract: A system for simultaneous real-time three-dimensional geometry and color texture acquisition. The system includes a system processor for generating at least three phase shifted black and white fringe patterns with a phase shift of 2 ?/3, a light projector adapted to project the fringe patterns onto an object, the projector being electrically connected with the system processor, and a color camera for capturing the fringe patterns to generate at least three raw fringe images. The fringe images are used to calculate a black and white texture image which is further converted to a color image by employing a demosaicing algorithm. The fringe images are also used to calculate a wrapped phase map that is further processed to generate a continuous unwrapped phase map by employing a phase unwrapping algorithm and the unwrapped phase map is converted to co-ordinates using calibrated system parameters for point-by-point three-dimensional shape measurement.

Abstract: An image adjusting method for extending vertical blanking intervals of an image signal is provided. Using the image adjusting method, an adjusted image signal is synchronized with an image signal before the adjustment to prevent image delay. The image adjusting method comprises providing a first image signal having a first data enable signal, wherein the first data enable signal has a first data enable duration; and generating a second data enable signal having a second data enable duration. The first and second data enable durations correspond to a same image frame of an image signal, and the second data enable duration substantially overlaps the first data enable duration.

Abstract: Provided is a method of displaying an image including: rendering a predetermined pattern of which each coordinate is set to a different grayscale value by pasting the pattern to a three-dimensional model as a texture, setting a corresponding relationship between a coordinate of a rendered image, which is obtained in a bitmap image form by the rendering, and a coordinate of the predetermined pattern for storing the rendered image as image drawing information by analyzing the rendered image, and arranging a desired texture in the rendered image for display based on the stored image drawing information when the desired texture is supposed to be displayed as an image.

Abstract: A method and apparatus for encoding and/or decoding depth image-based representation (DIBR) data are provided. The encoding method includes: converting 3-dimensional (3D) volume data into adjustable octree data with predetermined labels given to nodes; by referring to the labels, encoding nodes of the adjustable octree from the root node to leaf nodes by a modified breadth-first search (BFS) method allocating priorities among children nodes; and generating a bitstream with predetermined header information and encoded node data. The decoding method includes: extracting header information containing at least resolution information of an object, from a bitstream and decoding the header information; calculating the number of nodes by using the resolution information of the header, and by a modified BFS method allocating priorities among children nodes, decoding each node of a tree from the root node to leaf nodes; and restoring an adjustable tree by using decoded nodes.

Abstract: One object of the present disclosure is to provide an interpolation method for reconstructing an imaged object with the image edge as sharp as possible and the image itself as smooth as possible. An The EM (Expectation Maximization) image reconstruction is provided that suitable for freehand ultrasound systems.

Abstract: One embodiment of the present invention sets forth a technique rendering an image pixel within a graphics image with multiple shaders in a single rendering phase using a modular shader architecture. A user specifies how geometric objects, light sources, and various types of rendering operations in a graphics scene are associated. A rendering application provides computational infrastructure for rendering operations that includes finding an intersected object for each pixel of a target graphics image. The modular shader architecture includes a means for efficiently developing and incorporating custom shader modules for use by the rendering application.

Abstract: One embodiment of the present invention sets forth a technique rendering an image pixel within a graphics image with multiple shaders in a single rendering phase using a modular shader architecture. A user specifies how geometric objects, light sources, and various types of rendering operations in a graphics scene are associated. A rendering application provides computational infrastructure for rendering operations that includes finding an intersected object for each pixel of a target graphics image. The modular shader architecture includes a means for efficiently developing and incorporating custom shader modules for use by the rendering application.

Abstract: Embodiments of the invention are directed to templates for creating sequin-based designs and methods of use thereof. In one embodiment, the template may be a first panel which includes a plurality of cylindrical protrusions uniformly spaced thereon. A second panel may be removably coupled to a backside of the first panel. Each cylindrical protrusion may include an opening capable of receiving a shaft of a pin. In one method, a plurality of sequins or paillettes may be removably attached to the plurality of cylindrical protrusion by insertion of each pin into an opening in the sequin followed by insertion of the pin shaft into the opening of the raised cylinder. A plurality of templates tiled together with a plurality of sequins attached thereto may result in a photographic sequin-based design.

Abstract: A device generates an immutable display graph with leaves of the display graph representing low-level graphical operations such as drawings lines or a bitmap and nodes of the display graph representing translation and clipping. Because the display graph is immutable, it can be cached, shared, and rendered quickly. The structure of the display remains fixed, but elements such as rectangle fill, text position, clipping area, translation, and image location, remain time varying and can change without affecting the structure of the display.

Abstract: A computer readable storage medium includes executable instructions to associate two or more data sets with two or more vertices in a Venn graph. An intersection of the two or more data sets is associated with a vertex in the Venn graph. A plurality of outliers is associated between the two or more data sets and the intersection of the two or more data sets with a plurality of vertices disposed between the two or more vertices and the vertex in the Venn graph.

Abstract: The tessellating elements are in sets and comprise (a) at least one curve element comprising a semi-circle of diameter x; (b) at least one wave element having a perimeter which is three-sided, including a first side which is straight and of length x, a second side which comprises a concave curve forming a semi-circle of diameter x, and a third side which comprises a convex curve forming a quarter circle of radius x; (c) at least one corner element having a perimeter which is three-sided, including two sides of length x at right angles to one another and a third side which is concave and comprises a quarter circle of radius x; and, optionally, (d) one or more lozenge elements having at least one shaped face with a perimeter comprising two arcuate edges, each said arcuate edge having a radius of curvature x. The elements have a wide range of applications, from building tiles and children's toys, to screen-filling of computer screens or the like.

Abstract: A method of detecting an occurrence of an event of an event type during an animation, in which the animation comprises, for each of a plurality of object parts of an object, data defining the respective movement of that object part at each of a sequence of time-points for the animation, the method comprising: indicating the event type, wherein the event type specifies: one or more of the object parts; and a sequence of two or more event phases that occur during an event of that event type such that, for each event phase, the respective movements of the one or more specified object parts during that event phase are each constrained according to a constraint type associated with that event phase; and detecting an occurrence of an event of the event type by detecting a section of the animation during which the respective movements defined by the animation for the specified one or more object parts are constrained in accordance with the sequence of two or more event phases.

Abstract: A unified user interface (“UI”) is provided that includes functionality for defining both simple and complex animations for an object. The unified UI includes a UI for defining a single animation for an object and a UI for defining a more complex animation. The UI for defining a single animation for an object includes a style gallery and an effects options gallery. The UI for defining two or more animations for a single object includes a style gallery for selecting two or more animation classes to be applied to an object, one or more user interface controls for specifying the timing and order of the two or more animations, and an on-object user interface (“OOUI”) displayed adjacent to each object for providing a visual indication of the two or more animations and for providing an indication when an animation includes two or more build steps.

Abstract: A novel method for monitoring the operation of a solar thermal system such as the healthy home system or the like. The present device includes a hardware housing with a processor device coupled to a bus and one or more memory devices. The processor device can be coupled to one or more input devices wherein the one or more input devices are coupled to at least the solar array. The input devices can be coupled to the electric panel, the space heater, the water heater, as well as other components of the healthy home. The method includes a variety of steps such as establishing connection to associated hardware in the healthy home system, running diagnostic checks to determine system health, validating acquired data, and displaying the data through text display and graphical illustrations. The method also includes updating the system information according to a schedule scheme such as a polling scheme, interrupt scheme, or others.

Abstract: In one embodiment there is provided, a display driver system, comprising, at least one display driver; a magnetic random access memory (MRAM) macro; and a display driver interface coupling the MRAM macro and the at least one display driver.

Abstract: A LCD includes: a display panel and a signal controller. The display panel includes n pixels arranged in a matrix, wherein n is a natural number. The signal controller sequentially receives first through 2n-th pixel image signals, sequentially calculates a difference between a k-th pixel image signal and a (n+k)-th pixel image signal, recognizes the (n+k)-th pixel image signal as a motion signal when the difference is greater than a first reference value and recognizes the (n+k)-th pixel image signal as a non-motion signal when the difference is equal to or less than the first reference value, and determines whether the (n+k)-th pixel image signal is a moving-image signal based on numbers of motion signals and non-motion signals recognized. An image signal of a previous frame includes the first through n-th pixel image signals and an image signal of a current frame includes the (n+1)-th through 2n-th pixel image signals.

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: In a display apparatus such as PDP, in order to obtain well-lighted video while suppressing an increase in power consumption, the luminance level of a specific region of a display panel is decreased in accordance with an average luminance level of the entire display panel. However, when a low-luminance region and a high-luminance region are mixed in display video, even the luminance of the low-luminance region is decreased and gray-scale crush is caused in some cases. An average luminance level for each region is detected, and a shading process is controlled for each region based on the detected region-specific average luminance level and the luminance level of input video. With this control, when the luminance level of the input video signal is higher than a predetermined threshold, the shading process is operated, and when the luminance level is lower than the predetermined threshold, the shading process is stopped.

Abstract: A method of displaying image data is provided, which includes analyzing histograms by color signals of an input image frame; confirming grayscales by color signals in a predetermined frame unit with reference to the analyzed histograms; determining dimming factors in consideration of maximum grayscale values of the grayscales; determining image gains of the image data by color signals using the determined dimming factors; and outputting an image signal by applying the image gains to the input image and applying the dimming factors to a light source.

Abstract: The embodiments of the present disclosure teach overlaying videos on a display device. The technique involves one or more buffers at input such as a first buffer (Primary Buffer) and an overlay buffer, a blitting module, a second buffer(Frame Buffer), and a display screen. The first buffer provides a first image data to the blitting module and the overlay buffer provides a second image data to the blitting module. The embodiments of the present disclosure demonstrate overlaying the second image on the first image with enhanced configurable functionality (like stretching, clipping, color keying, Alpha Blending and Raster Operation) if required, without modifying the Primary Buffer without the need of any overlay support in hardware.