Abstract: A novel apparatus and method for controlling a brightness level of a display, which includes controlling the brightness level of the display based on a brightness level set for an application program.

Abstract: A flat display panel comprises a matrix array of pixels that displays an image, a controller that receives a video signal supplied externally along with a horizontal sync signal defining a horizontal scanning period and a vertical sync signal defining a vertical scanning period, a driver circuit that is controlled by the controller and writes the video signal and non-video signal into each row of pixels in each vertical scanning period, and an insertion timing setting section that controls a write timing of the non-video signal to synchronize with a write timing of the video signal. The insertion timing setting section is configured to count the number of horizontal sync signals supplied within the vertical scanning period defined by each vertical sync signal, and then determine the write timing of the non-video signal based on a result of counting.

Abstract: Systems, methods and apparatus provided for driving the memory of a liquid crystal display device that is capable of reducing the number of frame memories include the steps of storing a current frame data in an input line memory at a first speed; storing the data stored in the input line memory in a frame memory at a second speed faster than the first speed; storing a previous frame data stored in the frame memory in an output line memory at the second speed; and comparing the current frame data with the previous frame data, the previous frame data being outputted from the output line memory at the first speed and selecting a predetermined modulation data in accordance with the result of the comparison.

Abstract: An electrophoretic display device comprises a first substrate and a second substrate positioned to face each other. A first electrode is so mounted to the first substrate as to face second and third electrodes. The second and third electrodes have an area smaller than that of the first electrode. Also, the distance between the second and third electrodes is set shorter than the distance between the second and first electrodes and the distance between the third and electrodes. A suspension dispersing charged fine particles in an insulating liquid medium is interposed between the first electrode and the second and third electrodes. An AC voltage is applied between the second and third electrodes, and a DC voltage is applied between the first electrode and the second and third electrodes. Thus, the migration of charged fine particles are controlled in accordance with the dielectrophoretic and electrophoretic forces.

Abstract: A comparator-based driver has a configurable inverter that inverts one of the comparator output signals for application to the gate of a driver transistor used to generate the driver output signal. The configurable inverter can be selectively configured to provide any one of at least two different inverter logic threshold levels. In one possible operational scenario, the configurable inverter is configured such that the inverter logic threshold level is equivalent to the comparator's differential common-mode voltage to provide relatively high driver symmetry. The configurable inverter is then configured to provide a different inverter logic threshold level that is greater than the comparator's differential common-mode voltage to inhibit chattering in the driver output signal.

Abstract: The present invention relates to a method and an apparatus for driving liquid crystal display device capable of reducing electromagnetic interference by minimizing the number of transitions of data. An apparatus for driving a liquid crystal display device according to the present includes: a timing controller receiving data from an exterior; an encoding block in the timing controller comparing current pixel data with each of previous pixel data delayed by one line from the current pixel and former pixel data that precedes by one pixel from the current pixel data to produce modified data so as to minimize the number of transitions for each bit; a data driver supplying a video signal to data lines; and a decoding block in the data river recovering the modified data to the current pixel data.

Abstract: To reduce the variation of luminance between driving modules. Driving modules DR1 to DR3 each have monitor current output circuits, and output monitor current signals MI12, MI21, MI22, and MI31. A monitor unit of a control circuit converts the monitor current signals into monitor data D12, D21, D22, and D31, respectively, and supplies them to a control data generating unit. The control data generating unit generates current control data CTL1 to CTL3 such that the values of the respective monitor current signals are equal to each other and supplies them to the driving modules DR1 to DR3.

Abstract: The invention provides a projector a lighting optical system, a micro-lens array, a shutter array, a liquid crystal light valve, a projection optical system, and a modulation control portion. The modulation control portion can control the shutter array and the liquid crystal light valve in response to levels of gray-scale of colors specified by input image signals. When the gray-scale value is 1% or less, time-interval control is effected in such a manner that 1% of light is allowed to pass through by the shutter array, while a fine gray-scale expression is achieved by the liquid crystal light valve. Also, when the gray-scale value is 0%, light is shut out completely by the shutter. When configured in this manner, it is possible to improve the reproducibility at darker levels of gray-scale and the contrast characteristics. Accordingly, the display characteristics of an image from a liquid crystal projector can be improved.

Abstract: The present invention provides a light source apparatus and an image projection apparatus having the light source apparatus. The light source apparatus includes a lamp for emitting white illumination light, a color wheel for sequentially switching a color filter on which illumination light emitted from the lamp is incident, a wheel driving unit for controlling rotation of the color wheel, an LED light source unit for emitting at least one color of illumination light, an LED driving unit for controlling illumination light of the LED light source unit, an optical synthesis unit capable of optically synthesizing illumination light from the lamp and illumination light from the LED light source unit and emitting such synthesized illumination light, and a system controlling unit for controlling the wheel driving unit and the LED driving unit so that each illumination light synthesized can be the same in color.

Abstract: According to the present invention, a CPU 28a shifts target pixels in steps S305, S310, and S335, and at the same time references the image data in a frame memory 23f and checks whether the image is inactive, based on the difference in successive images, and whether the pixels are bright, based on the image data, in steps S320 and S325 respectively. When the image is liable to burn-in, a variable DF is incremented and a time interval t1 is updated every 5 minutes, the time interval t1 is being set shorter for an image liable to burn-in, i.e. the amount of motion is small and many pixels are bright, and set longer for an image not liable to burn-in, i.e. the amount of motion is large and many pixels are dark, at this time.

Abstract: In many cases it is not possible to reproduce enough video levels on a PDP due to timing issues or a specific solution against the false contour effect. In such cases dithering is used to render all required levels. In order to reduce the visibility of the dithering noise there is performed a common change of the sub-field organization together with a modification of the input video data through an appropriate transformation curve based on the human visual system luminance sensitivity (Weber-Fechner law).

Abstract: A driver for a display device includes: a timing controller for generating first and second signals; and a plurality of data drivers provided with a plurality of data drivers disposed on the left of the timing controller, a data driver disposed at the center thereof, and a plurality of data drivers disposed on the right thereof, wherein the plurality of data drivers disposed on the left are driven in response to the first signal, and the plurality of data drivers disposed on the right are driven in response to the second signal.

Abstract: A liquid crystal display device of a field sequential driving mode is capable of improving flicker and obtaining a good contrast by driving at a certain driving frequency. The liquid crystal display device divides one frame into at least three sub-frames and displays R, G, B images for each sub-frame, and the one frame is driven at a driving frequency satisfying at least one of two conditions that flicker is less than 45% and that a contrast ratio is at least 100. The driving frequency driving the one frame ranges from 80 to 110 Hz. The driving frequency satisfying the condition that the flicker is less than 45% is more than 80 Hz. The driving frequency satisfying the condition that the contrast ratio is at least 100 is less than 110 Hz.

Abstract: A self calibrating imaging display system (100). The imaging display system (100) can include a screen (110) having integrated photosensors (115). The photosensors can detect luminance values (155) correlating to luminance levels of the screen. The luminance values can be forwarded to a calibration module (130) which can receive the luminance values as an input and generate luminance correction factors (165). The luminance correction factors can be applied to adjust the luminance of the screen. Accordingly, images can be displayed on the screen with proper luminance levels.

Abstract: A built-in gate driver having an improved reliability and a display device having the same are provided. A transistor controlled by an output signal of a next stage is further provided and thus a node (Q) is rapidly discharged. Accordingly, the multi-output signals due to the reduced discharge of the node (Q) caused by the degradation of the transistor controlled by a node QB can be prevented. By including only one transistor for controlling the charge of the start pulse signal on the node (Q), it is possible to prevent a malfunction from occurring when the transistor connected to the clock is degraded by the periodic clock of a high state. Also, an image quality and the reliability of the gate driver can be improved.

Abstract: A power-down circuit for an image display panel has a switch connected between a ground power line and a display power line, which carries a display voltage higher than the main power supply voltage of the device. When the main power supply voltage falls below a certain level, the control terminal of the switch is connected to the display power line through a voltage dropping element, thereby turning the switch on to discharge the display voltage to ground. The voltage dropping element, which may be a parasitic diode, ensures that the switch remains on until the display voltage has reached or nearly reached the ground level.

Abstract: To simplify s configuration of a current mode DA converter. A data line driving circuit includes DA converting units U1 to Un. Each DA converting unit U1 to Un a voltage DA converting circuit for generating an analog voltage signal Sv based on image data, a V/I converting circuit for converting the analog voltage signal Sv into an analog current signal Si, and a voltage current selector for selecting one of the analog voltage signal Sv and the analog current signal Si based on a pre-charge control signal CTL. In addition, the analog voltage signal Sv outputted from the voltage current selector serves as a pre-charge voltage, and the analog current signal Si serves as a driving current of an OLED element.

Abstract: A shift register includes a plurality of stages to generate a plurality of output signals, in sequence. Each of the stages includes a driving circuit, a charging circuit, a discharging circuit and a holding circuit. The driving circuit is configured to generate a first output signal in response to a first clock signal or a second clock signal having a phase different from the first clock signal. The charging circuit is configured to charge an electric charge in response to a scan start signal or a second output signal of an adjacent previous stage. The discharging circuit is configured to discharge the electric charge in response to a third output signal of an adjacent next stage. The holding circuit is configured to maintain the first output signal within a first voltage when the first output signal is in an inactive state. Therefore, a parasite capacitance is decreased to prevent a floating of a pull-up transistor.

Abstract: A flat panel display is integrated with and mounted to an exterior portion of a motor vehicle. The flat panel display, such as LED or plasma display, is mounted flush to an exterior portion of a vehicle body. A protective rim surrounds at least a portion of the perimeter the display. A protective layer is disposed on a viewing surface of the display. A control circuit is coupled for controlling the display. A memory device is coupled to the control circuit for storing images. An operator control panel is coupled to the control circuit for controlling operation of the display. A communication link is coupled to the control circuit for receiving images for display on the flat panel display. A sensor is coupled to the control circuit for sending a sensor signal to the control circuit and causing an image to be displayed on the flat panel display.

Abstract: A wireless mouse having a receptacle for the storage of its wireless receiver is provided. When the wireless mouse is not in use, the wireless receiver could be inserted into a receptacle chamber built in the wireless mouse. An internal mechanism inside the wireless mouse automatically holds the wireless receiver in its position within the receptacle chamber. To remove the wireless receiver, a release button is engaged and the wireless receiver would be released and ejected out of the receptacle chamber.