Abstract: Provided is an organic light emitting diode (OLED) display device including a plurality of pixels to display images, each of the pixels including an OLED, a driving transistor connected to the OLED, and a switching transistor configured to supply data signals to the OLED, the device including: a sensor configured to sense a change amount of a mobility of the driving transistor; a compensation value calculator configured to obtain a change amount of a threshold voltage of the driving transistor based on the sensed change amount of the mobility; and a data compensator configured to adjust the data signals based on the sensed change amount of mobility and the obtained change amount of the threshold voltage.

Abstract: A system is provided for conserving energy in an AMOLED display having pixels that include a drive transistor and an organic light emitting device, and an adjustable source of a supply voltage for the drive transistor. The system monitors the content of a selected segment of the display, sets the supply voltage to the minimum supply voltage required for the current content of the selected segment of the display, determines whether the number of pixels requiring a supply voltage larger than the set value is greater than a predetermined threshold number, and, when the answer is negative, reduces the supply voltage by a predetermined step amount.

Abstract: A pixel circuit, a display panel and a display apparatus are used to improve the lifetime of the light emitting devices in the display apparatus. The pixel circuit comprises: a charging sub-circuit (1), a first driving sub-circuit (2), a second driving sub-circuit (3), a first capacitor (C1) and a second capacitor (C2).

Abstract: A display apparatus disclosed herein includes a plurality of pixel circuits, each having a plurality of switches configured to receive a driving signal of a predetermined period and to be controlled for opening and closing operation by the driving signal, a drive circuit configured to control the open/closed state of the switches, being operable to scan the pixel circuits and open and close the switches in periods independent of each other.

Abstract: An image display apparatus according to the present invention includes: a light emitting unit configured to include a light source; a display unit configured to display an image on a screen by transmitting light irradiated from the light emitting unit; a detection unit configured to detect light from the light source; and a control unit configured to extend a lighting duration of the light source when the detection unit detects light in a case where the lighting duration of the light source is shorter than a predetermined time length.

Abstract: Electronic device and a method for backlighting a liquid crystal display (LCD) display to provide different display definitions, the LCD display includes a backlight unit composed of one or more backlighting blocks. The method determines a display definition of a video image and illuminates or turns off backlighting blocks of the backlight unit to display the video image accordingly. The video image is displayed in full screen by all backlighting blocks if the video image is an ultra high definition (UHD) image, and turns on a smaller number of the backlighting blocks to display the video image if the video image has other than UHD display definition. As such, the electronic device is controlled to save power consumption in different display definitions of the LCD display.

Abstract: According to an aspect, a display device includes: an image display panel; a color conversion device including a signal processing unit and a signal output unit; a planar light-source device; and a light-source-device control unit. The signal processing unit includes a color conversion circuit that converts an input signal in a reference color area into a converted input signal generated in a definition color area where a chromaticity point of at least one of a first color, a second color, and a third color is inside of a reference color area, and a four-color generation circuit that generates an output signal and a light-source-device control signal from the converted input signal. The signal output unit outputs the drive signal to each sub-pixel based on the output signal. The light-source-device control unit outputs a drive voltage for emitting white light on the planar light-source device based on the light-source-device control signal.

Abstract: An optical assembly includes a plurality of light sources emitting light in a first direction at a predetermined orientation angle, and a light guide panel having a light incident section and a light emitting section. The light incident section has a first surface to receive the light emitted from the light sources in the first direction and the light emitting section is to emit light received from the light incident section in a second direction. Also included is at least one cover having a first surface adjacent the light sources and a second surface adjacent at least one portion of the light emitting section.

Abstract: A method for controlling an electro-optic device switches between a first driving scheme for changing an optical state between a-number of optical states and a second driving scheme for changing an optical state between b-number of optical states (b>a). In the first driving scheme, an integrated value W (A?B) of drive voltage and drive time when changing an optical state A to an optical state B, and an integrated value W (B?A) of drive voltage and drive time when changing the pixel from the optical state B to the optical state A satisfy a relation of W (A?B)=?W (B?A), and the integrated value W (A?B) and W (B?A) for the optical state A and B in the second driving scheme are equal to the integrated value W (A?B) and W (B?A) in the first driving scheme, respectively.

Abstract: An electrophoretic display capable of reducing passive matrix coupling effect includes an electrophoretic panel, a plurality of first scan lines, and a plurality of second scan lines. The electrophoretic panel includes a plurality of pixels. Each pixel of the plurality of pixels corresponds to a storage capacitor, and the storage capacitor is coupled to a first scan line and a second scan line. When the pixel is used for displaying a first color, the first scan line receives a first driving voltage, the second scan line is coupled to ground, and other first scan lines and other second scan lines receive a first voltage. A voltage difference between the first driving voltage and the first voltage and a voltage difference between the ground and the first voltage are smaller than a first threshold value corresponding to the first color.

Abstract: A driving integrated circuit capable of driving various image display panels having different pixel arrangements is described. A data driving unit alternately supplies analog image signals to one of two adjacent data lines. A data switching unit selects the data lines such that the image signals are alternately supplied to the adjacent data lines of the plurality of data lines and electrically connecting the data lines to the output channels of the data driving unit.

Abstract: Aspects of the invention can provide a display device, a display method, and a projection type display device that allow a characteristic of a display image such as brightness to be continuously changed. The display device can include a light source capable of emitting a plurality of different color lights and a white light, and an optical modulation device for modulating light corresponding to the lights emitted from the light source. The ratio of the period of emitting the white light relative to the total of the periods of emitting the lights from the light source can be variable.

Abstract: A chip on glass (COG) type liquid crystal display comprises: a glass substrate (3); two or more than two driving circuits, which are provided on the glass substrate (3) and are connected one another in series; a constant current source (9), which is separately connected to at least one of the two or more than two driving circuits to supply a constant current signal to each driving circuit; and converting circuits (8), which are provided in each driving circuit to convert the constant current signal received to a voltage signal.

Abstract: A method of processing an image comprises: receiving pixel data constituting an image, the pixel data including at least four sub-pixel color components having respective data values, and modifying one or more of the sub-pixel color component data values. The data values of corresponding sub-pixels from two pixels are modified in opposite directions to one another and such that the overall luminance of the display panel appears substantially unchanged to an on-axis viewer of the display panel.

Abstract: There are provided a driving circuit of a semiconductor display device which can obtain an excellent picture without picture blur (display unevenness) and with high fineness/high resolution, and the semiconductor display device. A buffer circuit used in the driving circuit of the semiconductor display device is constituted by a plurality of TFTs each having a small channel width, and a plurality of such buffer circuits are connected in parallel with each other.

Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.

Abstract: Provided is a display driving circuit comprising N gate driving units for being connected to N gate lines on an array substrate respectively, as well as a timing control unit, n pre-charging units and n scanning control units, the N gate driving units, the n pre-charging units and the n scanning control units are all connected to the timing control unit. Further provided is a display driving method, and a display apparatus. According to embodiments of the present disclosure, a time period for liquid crystal molecule being deflected to accurate positions corresponding to desired grayscale will be reduced when a voltage to be charged is supplied on the liquid crystal molecule, thereby accommodating a higher refresh frequency.

Abstract: A timing controller for a liquid crystal panel and a timing control method thereof are provided. The timing controller includes a timing control unit for analyzing an input signal to generate a system state transition voltage (STV) signal and a base STV signal, and the timing control unit outputs a base trigger signal and a switch trigger signal having asynchronous frame rates to a select unit at the same time. A compare unit determines whether frequencies of the two state signals are same, so that the select unit determines to forward the base trigger signal or the switch trigger signal to a level shift circuit. Finally, a signal-time control unit controls an output time of the base trigger signal, and controls an output time of the switch trigger signal, so that a liquid crystal unit connected to each gate line has an equal charge time.

Abstract: Described herein are systems and techniques for projecting content, periodically or continuously, onto a rear surface of a display medium from behind. The rear projected image is presented on an opposing or front surface of the display medium to a human audience for viewing. Additionally, non-visible light (e.g., IR light) is passed through the display medium to an area in front of the medium. The non-visible light is used to detect human gestures. In this manner, the rear projection arrangement avoids viewer obstruction during projection, yet detects and recognizes gestures made by the viewer in front of the display medium.

Abstract: A device and method for controlling rotation of a displayed image is provided. The device includes a sensor unit for detecting whether the device has been rotated; a photography unit for taking a picture of the face of a user in response to a determination that the device is rotated; a rotation determination unit for determining a rotation of the displayed image based on the captured face image of the user; and an image rotation unit for rotating the displayed image according to the determined rotation of the displayed image.

Abstract: A semiconductor circuit includes a first circuit block, a second circuit block, and power wiring lines that supply a plurality of reference potentials. The first circuit block and the second circuit block are connected to a common power wiring line that is one of the power wiring lines and supplies a common reference potential. A width of the common power wiring line in the first circuit block is smaller than a width of the common power wiring line in the second circuit block.

Abstract: Techniques are provided for reference frame management for screen content video coding using hash or checksum functions. A video data stream including a plurality of frames is received, each frame including a plurality of pixels that define content within the frame. A plurality of hash code values associated with partitioned portions of a current frame are determined, where each hash code value is determined as an output value from a hash or checksum function based upon an input value comprising pixel values for a corresponding partition within the current frame. The current frame is compared with a plurality of reference frames based upon a comparison of the hash code values of the current frame with hash code values of the reference frames. A reference frame is selected as a candidate reference frame for coding the current frame.

Abstract: A method is provided for compensating for brightness change in a display. The method includes storing a plurality of look-up tables (LUTs), where each table has a plurality of pixel levels at a variable refresh rate (VRR) and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR). The method also includes receiving an input signal from a graphics processing unit (GPU) and determining the VRR of the input signal from the GPU. The method further includes obtaining the LUT at the determined VRR of the input signal and adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined VRR. The method further includes transmitting the output signal to the display. A system is also provided.

Abstract: A device for communications over a multimedia communication interface. The device can be a source device including a scrambling circuit that receives control data associated with multimedia data to be transmitted over the multimedia channel of the multimedia communication interface, and generates scrambled control codes based on the control data. An encoding circuit generates transition minimized control codes based on the scrambled control codes. The device transmits the transition minimized control codes to a sink device via the multimedia channel. The sink device may also decode and de-scramble the transition minimized control codes received from the source device via the multimedia channel.

Abstract: An image display apparatus has an A/D converter for sampling an analog video signal whose signal level changes at a frequency higher than the frequency of a synchronizing signal, based on a reproduced dot clock, and converting the sampled analog video signal into a digital video signal, a clock adjusting circuit for generating a clock in synchronism with the synchronizing signal, delaying the phase of the clock according to set delays, and outputting the delayed clock as the reproduced dot clock, a controller for dividing an area of an image displayed based on the converted digital video signal, into a plurality of image areas defined by display lines in a horizontal direction, and establishing different delays for the divided image areas, and a delay evaluating circuit for converting differential data between adjacent signal levels on the display lines for the respective image areas, into absolute values and accumulatively adding the absolute values, thereby producing accumulated sums.

Abstract: Green and red light from first green and red light sources light a first element. Green and red light from second green and red light sources light a second element. Blue light from a blue light source light a third element. A control unit causes an image of a first video signal to be displayed on the first element during lighting of first red source, and causes an image of a second video signal to be displayed on the first element during lighting of the first green source. The unit causes an image of the first signal to be displayed on the second element during lighting of the second red source, and causes an image of the second signal to be displayed on the second element during lighting of the second green source. The unit causes an image of a third video signal to be displayed on the third element.

Abstract: According to an example, in a method for displaying visual analytics of entity data, geographic locations of entities may be plotted as first pixel cells on a first region and as second pixel cells on a second region of a geographic map. A determination may be made that the first pixel cells have a higher degree of overlap with each other in the first region compared to the second pixel cells in the second region. The geographic map may be distorted to enlarge the first region and the first pixel cells may be arranged in the first region in a manner that prevents the first pixel cells from overlapping each other. A color value for each of the pixel cells may be determined from a multi-paired color map that represents two variables corresponding to the entities by color and the pixel cells may be caused to be displayed on the distorted geographic map according to the determined respective color values.

Abstract: The disclosed embodiments provide a system that drives a display from a computer system. The system includes a first hardware path for controlling a backlight of a display of the computer system. The system also includes a second hardware path for controlling the backlight. Finally, the system includes a backlight controller that enables use of the first and second hardware paths in controlling the backlight from the computer system.

Abstract: A display panel driver including a moving image determining part, a sensing part and a dithering part. The moving image determining part determines whether an input image data represents a moving image or a static image. The sensing part senses a movement of a display apparatus or a user of the display apparatus. The dithering part performs a dithering operation to the input image data when the input image data represents the moving image or when at least one of the display apparatus and the user moves when the input image data represents the static image.

Abstract: An information terminal includes: a display section that displays an image; a light source that emits light; an optical signal generator that uses the light emitted from the light source to generate an optical signal with which an optical scanner scans an object; a drive signal generator that generates a drive signal for driving the optical scanner; and a switcher that switches the state of the information terminal between a first state in which the display section displays an image, the optical signal generator does not generate the optical signal, and the drive signal generator does not generate the drive signal and a second state in which the optical signal generator generates the optical signal, the drive signal generator generates the drive signal, and the display section displays no image.

Abstract: The image projection apparatus of the present invention includes a light source that outputs coherent light; a phase modulator that performs phase modulation on the light output from the light source to create a Fourier transform image; an amplitude modulator that performs amplitude modulation on the Fourier transform image in accordance with an image signal; a projection optical system that projects the light that has been amplitude modulated, and a controller that divides the image represented by the image signal into a plurality of divided images, determines the target luminance value of each of the areas of the Fourier transform image that is divided corresponding to the division of the image, based on the image signal, and outputs phase data indicating the amount of phase modulation so as to make the luminance value of each area of the Fourier transform image acquire the target luminance value of the associated area.

Abstract: A mask region extraction unit extracts a region that is to be masked in a panoramic image. A mask processing unit generates the object image where the region to be masked in the panoramic image is masked. A positioning unit adjusts the direction of a spherical image to the shooting direction of the object image. A mapping processing unit maps the mask-processed object image and the spherical image onto a three-dimensional (3D) object space as textures. A 3D image generator generates a 3D panoramic image, when the 3D panoramic image is viewed in a specified line of sight in such a manner so as to regard the shooting location of the panoramic as a viewpoint position.

Abstract: An image display apparatus includes a liquid crystal panel with a dual-view function to display two different first and second screen-sized images that are visible in a driver-seat direction and a passenger-seat direction, respectively. The first screen-sized image in the driver-seat direction contains a guidance image and a guidance manipulation image; the second screen-sized image in the passenger-seat direction contains a video image and a video manipulation image. When an occupant in the driver seat manipulates an icon within the guidance manipulation image on the liquid crystal display panel, the same guidance manipulation image is also displayed in the passenger-seat direction by replacing the video manipulation image.

Abstract: A display system and a data transmission method thereof are provided. When a first frame stored in a frame buffer and a plurality of second frames to be outputted by an audio and video (AV) source are the same, the AV source set a AV control signal corresponding to a self-refresh mode, and a timing controller controlled by the AV control signal accesses the first frame to output a display data. When the first frame and the second frames are different from each other, the AV source sets the AV control signal corresponding to a normal mode, and sets a AV data signal according to the second frames, and the timing controller controlled by the AV control signal outputs the display data corresponding to the received second frame or accesses the frame buffer to output the display data according to timings of the AV data signal and the display data.

Abstract: Described herein are systems, devices and methods for presenting content based on the spatial relationship between a media device and a user of the media device. The media device may present content based on an angle between an eye axis of the user and a device axis of the media device.

Abstract: A graphics system includes an integrated graphics processor and a discrete graphics processing unit. An intra-system bus coupled data from the discrete graphics processing unit to the integrated graphics processor. In a high performance mode the discrete graphics processing unit is used to render frames. Compression techniques are used to aid in the data transfer over an intra-system bus interface.

Abstract: A display control device of the present disclosure is a device for controlling a video image displayed on a display unit. The display control device includes a controller configured to generate an image including a first image and a second image superimposed on the first image to display the image on the display unit. The controller performs control to display the first image of a first field angle on the display unit when a first mode is set, and performs control to display the first image of a second field angle which is wider than the first field angle on the display unit when a second mode is set. The second mode is a mode for setting a region of the second image in a region of the first image of the second field angle.

Abstract: Interaction between an application, a user interface framework, and a graphics module to render a portion of an application surface. The application requests a surface corresponding to a particular range of the application surface from the user interface framework. In response, the user interface framework provides the requested ranged surface to the application. The application instructs the graphics module to populate the ranged surface by drawing into the ranged surface. The application then instructs the user interface framework to compose the ranged surface using the drawn ranged surface and other information available to the user interface framework. The user interface framework composing a composed surface using the drawn surface provided by the application, and additional information available to the user interface framework. The user interface framework may cache information from previously composed surface to allow for faster re-rendering should those portions later come into view on the display.

Abstract: Methods and systems which may implement buffer swapping are provided. The methods include rendering, onto screen locations of a display screen, data from a memory having a first buffer and a second buffer, each buffer having respective buffer memory locations which correspond to the screen locations of the display screen. The methods can include: rendering first data from the first buffer onto the display screen; writing, to the second buffer, second data based on at least some of the first data from the first buffer by performing at least one of transforming at least some first data and changing corresponding screen locations of at least some first data from the first buffer, by writing at most once to each buffer memory location of the second buffer; and rendering the second data from the second buffer onto the display screen.

Abstract: A musical performance assembly includes a guitar that has a body and a neck. A control circuit is attached to the guitar and the control circuit is positioned within the body. A keyboard is attached to the guitar such that the keyboard may be manipulated in the convention of playing music. A first set of switches is attached to the guitar and each of the first set of switches is electrically coupled to the control circuit. A second set of switches is attached to the guitar and each of the second set of switches is electrically coupled to the control circuit. A microphone is attached to the guitar to record a voice. The microphone is electrically coupled to the control circuit. Each of the second set of switches is manipulated to actuate the control circuit such that the control circuit may modify a sound of the recorded voice.

Abstract: Apparatus and methods for altering the tonal characteristics of output of a stringed instrument are disclosed. The stringed instrument may include a neck and a plurality of strings, the plurality of strings disposed about the neck. The apparatus may include a slide bar, the slide bar for contacting one or more strings of the plurality of strings and a support arm attached to the slide bar. The apparatus includes a retractable string depressor retractably connected to the support bar, the retractable string depressor for depressing one or more strings of the plurality of strings at a location on the neck forward of the slide bar.

Abstract: A non-electrical stringed instrument sound effects device includes a crosspiece, having a string interface, and a strapping system that is configured to removably fasten the crosspiece, including the string interface, around a plucking or strumming hand of a player of the stringed musical instrument. A method of creating a sound effect using the device includes attaching the device to a plucking or strumming hand of a player of a stringed musical instrument such that the strapping system extends around the hand and the crosspiece is disposed adjacent the outside of the hand, positioning the hand in a conventional plucking or strumming position such that the string interface of the crosspiece extends across at least one of the strings, and manipulating the string interface of the crosspiece against the strings while plucking or strumming to achieve a desired sound effect without use of electrical power.

Abstract: A guitar pick is described that places the playing edge and associated tip at an angle relative to a planar body that is grasp by the thumb and forefinger of a player to permit the player to hold his/her wrist at a more natural angle when playing. The pick is characterized by an arcuate wall that rises from a distal end of the pick, which in combination with the body forms a cradle for the thumb. A planar jut extends from the top edge of the arcuate wall and includes the playing edge and tip of the pick. The plane defined by the jut and the plane defined by the body define an acute angle of intersection.

Abstract: The present invention provides a harmonica having advanced functions and a simple structure, which can produce three fundamental chords in each of major and minor modes and which can be also used as a chromatic harmonica. The harmonica includes a pair of a blow reed and a draw reed in each of an upper part and a lower part of a hole and has four tone rows of a tone row for the upper blow reeds, a tone row for the upper draw reeds, a tone row for the lower blow reeds, and a tone row for the lower draw reeds. To three of the four tone rows are assigned three fundamental chords that each consist of four notes, and the remaining one tone row is used to supplement a note required to configure the chromatic scale.

Abstract: The present disclosure illustrates a sound insulation electronic pad for a bass drum of a jazz drum set. The electronic pad is assembled with a drum frame of the bass drum of the jazz drum set by a support structure, and located between a drumhead of the bass drum and a drum pedal. The electronic pad does not contact with the drumhead of the bass drum. When the electronic pad is knocked by the drumstick and the drumhead of the bass drum is not knocked by the drumstick, the electronic pad and an external trigger module simulate an electronic drum sound of the bass drum and output the electronic drum sound via an output device such as earphones or a loudspeaker. Therefore, the electronic pad of the present disclosure can be used to remodel the bass drum of the jazz drum set as an electronic drum.

Abstract: The present invention generally relates to cajón drums. Specifically, this invention relates to a multi-tonal box drum kit that provides a form factor that is easy and convenient to use while producing the tones and sounds of a full drum kit or some subset thereof.

Abstract: A removable bass drum head cover with a printed display is provided. The drum head cover may be releasably attachable to a bass drum head. In certain embodiments, the drum head cover may be releasably attachable to the bass drum head cover by a hook and loop fastener. Therefore, drummers may easily interchange the designs, artwork, and band names displayed on their bass drum heads.

Abstract: According to some aspects, a cymbal is provided comprising a metal plate having a plurality of perforations therein, and a coating of a resilient material in contact with the metal plate that covers at least a portion of the surface of the metal plate. According to some aspects, a cymbal is provided comprising a metal plate, and a dampening element attached to at least a portion of the circumference of the metal plate. According to some aspects, a method of producing a cymbal is provided, comprising forming a metal plate having a plurality of perforations therein, and forming a resilient material over at least a portion of the surface of the metal plate and in contact with the metal plate.

Abstract: In one embodiment, a system for analyzing melodies is disclosed that may receive data for a musical composition, the data including a sequence of notes that make up a melody contained in the musical composition, and store, in a database, a pitch and a duration for at least one note in the sequence of notes in association with the melody. In addition, the system may determine at least one pitch differential and at least one duration ratio for at least two consecutive notes in the sequence of notes, and store, in the database, the at least one pitch differential and the at least one duration ratio in association with the melody. The system may also generate at least one metric associated with the melody based on the at least one pitch differential and/or the at least one duration ratio.

Abstract: An audio effects chain sequencing apparatus alters the sequence of effects units in an effects chain so that different sequences of effects units can be connected. In one example the audio effects chain sequencing apparatus can have an external input port and an external output port, at least two component ports each having an internal input port and an internal output port, where the at least two component ports receive an input from the external input port, transfer that input in a component sequence to the component ports, and transfer the input to the external output port at the end of the component sequence and having a sequence selection module which selects the component sequence in which the at least two component ports transfer the input.