Abstract: A projector system is disclosed comprising a sceen and at least one light source to produce a plurality of color planes. The color planes comprise at least a first color plane, a second color plane and a third color plane. The plurality of color planes being projected onto the screen such that the first color plane comprises a different resolution than the second color plane and the third color plane.

Abstract: An OLED display system includes a) an OLED display including an array of light emitting pixels, each pixel having a plurality of OLEDs for emitting different colors of light specifying a gamut wherein one of the OLEDs has a power efficiency or lifetime different from the power efficiency or lifetime of at least one of the other OLEDs; b) a control signal; and c) a display driver for receiving a color display signal representing a relative luminance and color to be produced for each pixel of the display and generating a converted color display signal for driving the OLEDs in the display, wherein the display driver is responsive to the control signal for controlling the color gamut saturation of light produced by the OLEDs to reduce power consumption or increase lifetime of at least one of the OLEDs.

Abstract: The present invention relates to a device for digital display of a video image using time-division modulation. This device is intended to display a video image during a video frame comprising a plurality of consecutive subfields distributed within at least two separate identical time segments. According to the invention, the pixels of the video image change state at most once during each time segment and the video image to be displayed is saved in the image memory in the form of information identifying, for each subfield, the pixels changing state.

Abstract: Apparatus for converting orthogonal data to a format suitable for displaying the image on a diamond-shaped pixel array. A stream of digital data formatted for being displayed on an orthogonal pixel array is received at an IIR (Infinite Impulse Response) filter. The digital data stream is conditioned so that it can be sub-sampled and used on a diamond-shaped pixel array with minimal distortion. The sub-sampling comprises dropping even pixels in odd numbered orthogonal rows and dropping odd pixels on all even numbered rows. A tap is included at the IIR filter for providing a partially filtered version of the data stream to circuitry for reducing “ringing” of the image. The circuitry also detects edges in the image and emphasizes vertical transitions when a vertical edge is detected and emphasizes horizontal transitions when a vertical edge is not detected.

Abstract: An OLED display system includes a display device having an array of light emitting pixels, each pixel having a plurality of OLEDs for emitting different colors of light specifying a gamut and at least one additional OLED for emitting a color of light within the gamut, wherein the power efficiency of the additional OLED is higher than the power efficiency of at least one of the plurality of OLEDs; means for generating a control signal indicating an amount of contribution to the light output of the display provided by the additional OLEDs; and a display driver for receiving a standard color image signal representing relative luminance and color to be produced for each pixel of the display and generating a converted color image signal for driving the OLEDs in the display, the display driver being responsive to the control signal for controlling an amount of light produced by the additional OLEDs such that the power efficiency of the display may be increased and/or the rate of degradation of the display device ma

Abstract: A mobile telephone 1 including a display screen 3 and a semiconductor chip 5. The semiconductor chip 5 includes control means 7, a receiver 9 and a memory 11. The receiver 9 receives one or more first, second and/or third signals from first, second and third sensors 15, 17 and 19 respectively. When the control means 7 receives a signal from the receiver 9 indicating that the current mode of contrast and/or color is to be changed, the control means 7 selects an associated pre-defined mode of contrast and/or color from the memory 11 in order to optimize the visibility of the display screen 3, subject to the amount of supply voltage available.

Abstract: A method and apparatus for driving a liquid crystal display panel that is capable of driving a liquid crystal display panel having five color dots within one pixel. In the method, adjacent first color sub-pixels spaced at a desired distance, of a plurality of first color sub-pixels arranged at the middle portion of a pixel are shorted to apply a first color data to said adjacent first color sub-pixels. A second color data is applied to a plurality of second color sub-pixels arranged at one edge of said middle portion within said one pixel. A third color data is applied to a plurality of third color sub-pixels arranged at other edge of said middle portion within said one pixel.

Abstract: An electroluminescent display and driving method is provided wherein the rows of pixels are divided into sub-pixel sets and several different sets of sub-pixels are then addressed from within a larger superset of adjacent sub-pixels. The image data for the addressed sub-pixels is averaged with that for adjacent sub-pixels and is applied to the reduced number of larger sub-pixels in sequence. Consequently, for a given sequence of input frame data sets the time average over one frame for a portion of the sub-pixels at any location of the panel is substantially the same as that for a conventionally addressed sub-pixel in a prior art panel.

Abstract: A method of displaying an electronic document on a digital handheld device first calculates a reduction ratio equal to a ratio of an original document width to the digital handheld device screen width. The method then calculates color values of pixels in a reduced document by processing color values of an array of pixels in the original document. The method builds the reduced document having a size related to the original document by the reduction ratio. Finally, the method displays the reduced electronic document on the digital handheld device screen, and allows a user to switch between the original and reduced documents.

Abstract: An object of the present invention is to provide a high definition PDP screen without lowering the PDP luminescence efficiency. The display panel is provided with a plurality of cells that are arranged in a matrix, each of the plurality of cells emitting a different unique luminescent color; wherein a plurality of cells each bearing first luminescent color are disposed on every other line in a vertical direction, and a line of cells each having second luminescent color and a line of cells each having third luminescent color are alternated with a line of said plurality of cells having first luminescent color respectively therebetween.

Abstract: A control circuit for use in a display device capable of displaying gray scale including a plurality of column electrodes and a plurality of row electrodes intersecting each other and pixels provided around the intersections thereof, includes a display data converting section for receiving input display data, dividing the input display data into binary display data and gray scale display data in such a manner as to enable pulse width modulation one frame in a plurality of frames, and outputting the binary display data and the gray scale display data: a pulse controlling section for determining the timing of applying a voltage to each of the plurality of column electrodes for the gray scale display data; and a column electrode driving section for applying a voltage corresponding to the gray scale display data to at least one said column electrode based on the timing of applying a voltage determined by the pulse controlling section.

Abstract: The invention carries out a movement compensation of contouring defects. The movement compensation is carried out, for each subfield, by assigning, to each cell, the state which would correspond to a movement-compensating intermediate image located at the instant of the said subfield. The method of the invention associates a single movement vector Vm with each cell Ci so as to constitute an intermediate image for each subfield.

Abstract: A display apparatus has a plurality unit pixels each divided into a least three sub-pixels for displaying a halftone. The at least three sub-pixels have mutually different areas, so that one sub-pixel among the at least three sub-pixels has a maximum area which does not exceed a total area of the remaining sub-pixels. As a result, it is possible to obviate a so-called linear defect occurring in a multi-level gradational display by suppressing the shift of gravity center of light spots and change in sub-pixel arrangement pattern in displaying slightly different gradation levels.

Abstract: In an active matrix liquid crystal display, pixels are arranged in rows and columns of a matrix and are controllable via row electrodes and column electrodes. To improve and to expand the possibilities of image rendering without increasing the number of rows and columns to be controlled, the pixels are divided into sub-pixels with corresponding sub-pixel electrodes, each of which is connected to the column electrode assigned to the pixel via controllable switches. On the control side, the controllable switches are connected to the row electrode assigned to the pixel via pixel control unit which is common to them. From a control signal supplied to it via the row electrode the pixel control unit generates locally and chronologically different turn-on signals for the various switches so that they switch chronologically successive different gray-scale levels of a gray-scale signal present at the column electrode through to the sub-pixel electrodes.

Abstract: A matrix-display panel such as a liquid crystal display panel is composed of row and column electrodes and liquid crystal interposed between both row and column electrodes. Pixels formed at each intersection of the electrodes are driven by imposing composite voltages consisting of scanning voltages supplied to the row electrodes and image data voltages supplied to the column electrodes. Pixels aligned along one row electrode are alternately connected to two or three neighboring row electrodes in a zigzag manner, and an interlaced scanning is performed by jumping one or two row electrodes at a time, thereby reducing a flicker frequency to an invisible level and making a line-scroll invisible. The pixels may be driven by switching a transistor connected to each pixel.

Abstract: Luminescent portions correspondent to each gradation are arranged point-symmetrically with one another around a prescribed position provided at the center, thereby forming a unit pixel element including a plurality of luminescent elements. Such a structure allows provision of a display device wherein a luminous center does not shift for each gradation. Accordingly, when the brightness of the displayed images is changed, unfavorable shifting of display positions does not take place. The present invention thus solves defects related to the picture quality, such as flickering of images, or an impression of unnatural display or fatigue caused to the viewer.

Abstract: A method of halftoning input image data intended for reproduction on a display (114) having a plurality of pixels (23-27) and a limited pixel response time (see FIG. 1) is disclosed. In a first halftone cycle (K=n), the method comprises (first) halftoning an input value (30) to display an extreme representable (100% or 0%). In a second halftone cycle (K=n+1), (second) halftoning the input value (30) to display an intermediate value such that the average of the extreme representable value and the intermediate value is substantially equal to the input value.

Abstract: An active matrix device includes a data line driver circuit for sampling the input signal to produce data signals for each of the rows of control elements in a corresponding line period, and a scan line driver circuit for addressing the scan lines sequentially by applying a scan signal to the scan inputs of the control elements along each of the rows so as to supply said data signals to the control elements along the row. Such circuits are controlled so that a data input signal is sampled and stored to produce data signals for a first group of the control elements along the row in a first line subperiod and the stored data signals are applied to the first group of control elements in a second line subperiod, and so that the data input signal is sampled and stored to produce data signals for a second group of control elements along the row in the second line subperiod and the stored data signals are applied to the second group of control elements in a subsequent line subperiod.

Abstract: In an image display apparatus including a delta-array display device and pixel position transition means for repeatedly shifting the respective pixel positions of the display device to each of positions at four points, the pixel shifted positions at the four points are: a first pixel position serving as standard; a second pixel position shifted with respect to the first, standard pixel position horizontally approximately by ½ of horizontal pixel pitch; a third pixel position shifted horizontally approximately by ¾ or ¼ of horizontal pixel pitch and vertically approximately by ½ of vertical pixel pitch; and a fourth pixel position shifted horizontally approximately by ¼ or ¾ of horizontal pixel pitch and vertically approximately by ½ of vertical pixel pitch.

Abstract: A display and an image displaying method which ensure gradation expression by a sub field system limits display resolution information in predetermined sub fields, excluding a lower sub field, thereby shortening an address control period. Further, noise dots originated from error diffusion is made less noticeable dot by dot by independently controlling the least significant sub field. This limits the amount of resolution information of a displayed image and improves the general image quality.

Abstract: Overlay display can be performed correctly even in a heavy load state regarding video data amount on a general purpose bus. The video data transfer apparatus of the present invention comprises an FIFO memory for video data and outputting a nearly-full signal when held data become close to full and a transfer control section stopping an output enable signal so as to stop output from the FIFO memory at the time of output of the nearly-full signal and restoring the output enable signal so as to perform control in which the video data on and after an output stop position are outputted from the FIFO memory when the same position as the output stop position appears in a frame on and after the frame of the output stop time when the nearly-full signal disappears.