Abstract: A spatial light modulator for displaying M interlaced fields of image data per frame, where M is an integer greater than one, includes a plurality of picture elements and a controller for controlling the supply of image data to the picture elements. In each ith field where 1≦i≦M, image data are supplied to a plurality of ith sets of picture elements forming composite color picture elements. For each jth field where 1≦j≦M and i≠j, the image data are supplied to a plurality of jth sets of picture elements forming a composite color picture elements. Each ith set is different from each jth set and each ith set has at least one picture element belonging to a jth set.

Abstract: A display controller in a computer system controls the output of graphics display data in a computer system having a fixed resolution flat panel display. Fixed panel displays may have problems displaying non-native resolutions particularly at lower resolutions. The controller of the present invention uses a Discrete Time Oscillator (DTO) based clock divider and DCT based polyphase interpolation to upscale graphics display data from a first resolution to the panel resolution. DTO clock divider circuit synchronizes scan clocks between the input resolution and the desired output resolution. Within graphics display area, MVA.TM. display at greater color depth and resolution may be accommodated by additional DTO divider and interpolation steps.

Abstract: To provide a structure and a method for driving an active matrix liquid crystal display device having low electric power consumption and high quality image. The active matrix liquid crystal display device of the present invention comprises a plurality of scanning lines and a plurality of signal lines which are disposed in matrix, and a thin film transistor (TFT) and a pixel electrode corresponding to each combination of scanning line and signal line. The scanning line corresponding to each of the pixel electrodes is located on the upper and lower sides of the pixel electrode. The TFT is formed between the scanning line corresponding to the pixel electrode and upper and/or lower portion of the scanning line. An additive capacity is formed between the pixel electrode and a scanning line other than the scanning line corresponding to the pixel electrode.

Abstract: A driver circuit wherein a first switching element and a second switching element are totem-pole-connected, wherein the totem pole connection is connected at its one end, node and other end with a power source, an output to a load and a reference potential, respectively, wherein the first switching element is connected between the one end and the node, wherein the second switching element is connected between the node and the other end, and wherein a third switching element is connected between the one end of the totem pole connection and the control terminal of the first switching element.

Abstract: The present invention provides a color display device in which the shape of an on-chip color filter pattern is improved to remove differences in height on the surface of a driving substrate. In the color display device, normal color filters are formed in alignment with pixel apertures, and a dummy color filter is formed in the spaces between the respective color filters apart from contact holes. Differences in height between the color filters and the spaces between the respective color filters are removed to obtain a color display device having excellent quality of liquid crystal alignment.

Abstract: In a computer graphics windowing system including a color map, a method for managing palette color value contents of the color map. Input color values are received. Error values between each input color value and each palette color value are used to determine a closest palette color value to each input color value. A list of input color values having largest error value distances to their respective closest palette color values is determined. A subset of this list is added to the color map to derive a modified color map. A color value metric process for determining an error value between each input color value and each palette color value comprises converting each input color value and each palette color value to a uniform color space. A lightness weighting constant is used to skew the error value in to be more strongly influenced by differences in lightness than by differences in chromaticity. A look up table having address spaces indexed by RGB index color values is generated.

Abstract: A window generating circuit of an image processing apparatus which processes an image is provided. The circuit includes a main controller, a memory device, first, second and third registers, and a window generator. The main controller inputs an original clock signal and generates first and second line memory read control signals, first and second line memory write control signals, a pixel clock, and address signals for first and second line memories based on the original clock signal. The memory device contains the first and second line memories. The first register stores current pixel data in accordance with the pixel clock, and the current pixel data relates to a current line of pixels of the image. The second register stores first line memory data output from the first line memory in accordance with the first line memory read control signal, and the first line memory data relates to a first line of pixels which precedes the current line of pixels.

Abstract: A video muting control device using a microcomputer, comprising a video mute key for generating a video mute command upon activation by a user; a microcomputer connected to the video mute key, the microcomputer generating a blanking control signal in response to an input of the video muting command, a preamplifier for receiving RGB video signals, the preamplifier generating an amplified video signal in response to a clamping signal and a contrast control signal, and a video mute circuit for muting a video display in response to the blanking control signal by grounding any one of the RGB video signals, the clamping signal and the contrast control signal.

Abstract: A computer mouse for generating and delivering control signals to a computer includes a foot-operated device having a housing with a top foot engaging surface, a bottom surface and an interior with one or more rollers rotatably captivated therein and disposed in moving engagement with a fixed surface. Movement of the user's foot is transmitted to the rollers, causing rotation of the rollers in a direction corresponding with the direction of foot movement. Detectors within the housing sense movement of the rollers in the x and y directions and translate the roller motion into electrical signals by generating pulses. A micro controller receives and interprets the pulses to determine linear direction of movement of the rollers in the x and y direction and transmits the interpreted data to a computer. Mechanical clicking operation is provided, wherein the one or more rollers are axially moved in response to downward force of the user's foot on the mouse, causing a switch to be operated momentarily to an on state.

Abstract: A power supply apparatus for a display monitor includes a power factor correction circuit coupled to receive a primary voltage, for correcting a power factor of said primary voltage and generating a secondary voltage; a switch operable in response to a pulse signal; a switch control circuit for generating said pulse signal; a transformer including a primary winding and secondary windings connected to each other by mutual induction, in which the primary winding has a first terminal coupled to receive the secondary voltage and a second terminal connected to the switch, and in which the transformer is being supplied with primary induced voltage when the pulse signal has a primary duty ratio and supplied with secondary induced voltage lower than the primary induced voltage when the pulse signal has a secondary duty ratio; a rectifier for rectifying the primary and secondary induced voltages; and a smoothing circuit for smoothing an output voltage of the rectifier for application to the power factor correction cir