Abstract: A hit-test system and methodology for use in a computer-based system having a graphical user interface for searching a display pixel map in successively-increasing distances from a selected pixel location associated with a current cursor position in accordance with a predetermined search topology defined by pixel offset values stored in a look-up table. The hit-test system comprises a distance computation module for generating the pixel offset values corresponding to each of the successively-increasing distances. The pixel offset values define a determined search topology. A display search engine searches pixel locations determined from the pixel offset values and the selected pixel location. The display search engine comprises a radius search module selecting the successively-increasing distances and adds the pixel offset values to the selected pixel location. A display analysis module determines whether the queried pixel location in the display pixel map contains a color indicative of a display element.

Abstract: A display control device for a liquid crystal display is comprised of a detecting section for extracting a horizontal and vertical synchronizing signal from a video signal, a control signal generating circuit for generating a scanning start signal synchronous to the vertical synchronizing signal and a reference clock signal synchronous to the horizontal synchronizing signal, an X-driver circuit for extracting a horizontal picture signal from the video signal in synchronism with the horizontal synchronizing signal and supplying the horizontal picture signal to each of the horizontal pixel lines, and a Y-driver circuit having a shift register for shifting the scanning start pulse in one direction in response to the reference clock signal and selecting the horizontal pixel line corresponding to a holding position of the scanning start pulse, for supplying a selecting signal to the selected horizontal pixel line.

Abstract: An apparatus and related method for controlling picture inversion of an LCD, determining states of vertical and horizontal sync signals. The determined states are used to insert appropriate delay periods so as to allow picture inversion to take place only when the video signal is in a section of displaying no image, thereby eliminating a noise bar that is displayed during the picture inversion operation.

Abstract: A system for displaying a color picture. This system has a field sequential signal generator for receiving and storing a color picture signal, which includes a plurality of signal components per field, at a first rate and sequentially sending the plurality of signal components, as a field sequential signal, at a second rate which is higher than the first rate; a picture display for displaying a monochromatic picture based on each of the signal components; a coloring device for coloring light emitted from the monochromatic picture displayed on the picture display; and a controller for sending a vertical sync signal, which includes a plurality of vertical sync pulses corresponding to the signal components respectively, to the picture display.

Abstract: A flat color microtip screen including a cathode divided into columns addressable independently; a first pixel selection grid divided into rows; a second color selection grid including a plurality of groups of slots extending along in columns, each group of three slots corresponding to a cathode column, slots of the same row of each group being connected to a same terminal; an anode including groups of three parallel bands of luminescent material, each band corresponding to one of the slots, all bands being at the same potential.

Abstract: A driving circuit integrated type active-matrix liquid crystal display device is arranged such that a buffer composed of a P-channel thin film transistor and an N-channel thin film transistor that are connected in series is adopted for the P-channel thin film transistor and an N-channel thin film transistor; at least one of the P-channel thin film transistor and the N-channel thin film transistor is composed of a plurality of thin film transistors that are connected in parallel; and at least one of a power source line and an output line connected to the plurality of thin film transistors connected in parallel is formed in a wiring pattern composed of a main wiring section and a branched wiring section branched into respective thin film transistors. The described arrangement permits a line-shaped defect due to a defective thin film transistor which constitutes a buffer of the drive circuit to be eliminated with ease, while improving a yield of panels.

Abstract: A method for color conversion is disclosed. The method includes the steps of generating constants from a number of points, spacing and an endpoint for YUV point spacing, adding a constant to a value representing image data to clamp the value towards a predetermined maximum range of image points, subtracting a second constant from the resulting sum value to clamp the sum value towards a predetermined minimum range representing points in an image graph, shifting the resulting difference using spacing information to generate a value for Y,U,V values, and combining the resultant Y,U,V values to generate palette indexes to represent given image data.

Abstract: A method for estimating a white point includes displaying a plurality of grey patches on a screen; requesting that a user select a patch corresponding to a neutral grey; and iteratively converging to a patch where the estimated white point is the most neutral grey point.

Abstract: Images are presented to an observer using a controllable light delivery medium having a display region. The light delivery medium is controlled in such a way as to enable the observer to perceive any of more than one image based on the motion state of the observer's eye and without relying on any change in the operation of the controller or the medium as the basis for triggering the perception of the more than one image.

Abstract: A high-fidelity mechanical transmission system for transmitting forces which can be used in a human-computer force feedback interface device connected to a host computer. The transmission system includes multiple stages, including an actuator stage coupled to an actuator and one or more additional stages. The actuator stage includes a rotatable capstan pulley coupled to the actuator, a cylindrical capstan drum, and a flexible member, such as a cable, coupling the capstan pulley and drum. The cable is coupled to the capstan drum at both ends, and causes the capstan drum to rotate for multiple revolutions. The output stage is coupled to the driven object to rotate the driven object. The output stage can include a capstan pulley, capstan drum, and cable. An interface device can include the transmission system for inputting motion signals to a connected host computer and for providing force feedback to the user.

Abstract: One aspect of the invention relates to a method for synchronizing control signals with scaled digital video data.

Abstract: A source image may be manipulated by a computer to include special graphics effects. The source image may be used for still pictures or motion video applications and may include a single image or a sequence of images. The special graphics effects applied to the source image to create a desired destination image include various non-uniform scaling or arbitrary distortion functions. The effect has a corresponding affine transformation that approximates the non-uniform scaling function. This affine transformation is used to define an ellipse in the source image. A linear transformation from a unit circle in the source image to the ellipse in the source image is calculated. The linear transformation is used to modify a reconstruction filter in the source image. A pixel value in the destination image is determined by identifying pixels included in a support of the modified reconstruction filter in the source image in order to reduce artifacts in non-uniform scaling applications.

Abstract: An extended graphics array (XGA) graphics system is disclosed for converting data received in a double storage bank into a single storage bank when the data is processed. The system includes a graphics data generator for generating synchronizing signals and a main clock signal according to an XGA graphics mode and dividing pixel data to be displayed on a display into even and odd-number data when transmitted from the graphics data generator. It also includes a driving unit having two storage units for storing a predetermined number N of pixel data and for driving the display according to the pixel data stored in the storage units.

Abstract: A processor in a haptic joystick renders force effects that are applied to control handle gripped by a user. A plurality of force effects specified by a host computer to the processor are stored in a random access memory (RAM) that is coupled to the processor. Further, a plurality of force effects are stored in a read only memory (ROM) that is coupled to the processor. The processor employs a scheduler to render the force effects in a specified order, for specified time intervals. The scheduler controls how the force effects are rendered, i.e., sequentially, concatenated, and/or superimposed. A play list employed by the scheduler indicates for each increment of a servo clock when each force effect should be rendered by the processor. The scheduler has a round robin queue that can implement at least five types of effects, including: behavioral, synthesized, wave table, variable parameter, and process list.

Abstract: An interactive desktop system comprising a work surface, a display device such as a projector for displaying images in a first area on the work surface, a camera for capturing images in a second area on the work surface, and an image processor, coupled to the display device and to the camera, said image processor being suitably programmed (a) for causing the display of barcodes on the work surface, (b) for causing the capture of said barcodes and, in dependence on the captured information, (c) for determining the position of said second area relative to said first area. The barcodes are displayed in a horizontal then vertical orientation, with an image capture in each display orientation being performed by the camera. This enables the camera's field of view within the displayed image to be determined. In an alternative embodiment, glyph codes may be used instead of barcodes.

Abstract: A circuit for compensating for a vertical distortion of images by modes includes: a compensation position regulator for regulating a pulse width of a horizontal output signal by varying an integration value of an output pulse width of a horizontal output circuit, for adjusting an output position of the horizontal output signal; a compensation size regulator for selectively amplifying the horizontal output signal voltage whose output position has been regulated by the compensation position regulator, for adjusting the voltage amplitude of the horizontal output signal; and a modulation circuit including a primary circuit for receiving the horizontal output signal whose output position and size are regulated by the compensation position regulator and the compensation size regulator, and a secondary circuit for receiving a vertical output signal having a period variable by modes through one terminal thereof, the modulation circuit modulating the vertical output signal selected by modes with the horizontal output

Abstract: A drive circuit for a display device including a display panel for displaying an image line by line has a data register. The data register is used to store optional data in response to a control signal, to overwrite the stored optional data with display data, and to prepare display data for a given line of the display panel. The data prepared in the data register is transferred to the display panel to display the given line of the display panel. The drive circuit is capable of supplementing display data if the display data is improper for the display, thereby securing the quality of the displayed images.

Abstract: A three-dimensional display system for displaying a three-dimensional object on a two-dimensional screen, wherein three semi-transparent X, Y and Z cursor planes are moved on the display screen in consistency with a moving operation of a pointing device. A cursor symbol is displayed at a cross point of the cursor plane. When an object symbol is present in either front or rear of the cursor plane, its luminance and display color are changed so as to recognize relationship between the object symbol and the cursor plane visually. The object symbol is projected on the Y cursor plane to show a Y projection object symbol, enabling to recognition of the altitude of the object symbol. The object symbol is further projected on the Z cursor plane and a reference plane to obtain a Z projection object symbol and a reference projection object symbol, resulting in recognizing the planar position of the object symbol. "The object symbol is further projected on the X and Y cursor planes.

Abstract: A multi-media data display device for displaying a plurality of multi-media data items on a display screen is provided. Each of the multi-media data items has geometric data and attributive data defined by positional information in an n-dimensional space.

Abstract: In a field emission type image display panel, plural cathode electrodes are formed in a stripe shape on a first substrate and each having emitters for field emission. Cathode lead-out electrodes supply signals to the cathode electrodes. Plural patch-like gate electrodes are arranged in a matrix form over the plural cathode electrodes and insulated from the plural cathode electrodes. Gate lead-out electrodes are led out along spaces between adjacent two rows in rows formed of patch-like gate electrodes substantially perpendicular to the cathode electrodes, each of the gate lead-out electrodes being connected to the patch-like gate electrodes in adjacent two rows in a zigzag arrangement and every other gate electrode. A second substrate is spaced from the first substrate a predetermined distance apart. Plural patch-like anode electrodes are arranged on the second substrate, the plural anode electrodes respectively confronting the plural patch-like gate electrodes in a matrix form.