Abstract: Display apparatus comprises a display screen (400) and a drive circuit (401) connected to the display screen (400) to generate an image on the display screen (400) in response to an input video signal (R,G,B). A timer (405) generates a count in response to a clock signal. A detector (403,404,402) also receives the input video signal and resets the timer (405) on detection of a change in image content between successive frames of the input video signal (R,G,B). Control means (402) is connected to the timer (405) and to the drive circuit (401) for at least partially disabling the drive circuit (401) in response to the count stored in the timer (405) exceeding a predetermined threshold.

Abstract: Modifications to a prior art system known as video graphics adapter (VGA) for displaying color images on a monitor attached to a personal computer. The modifications provide the following four enhancements to a standard VGA system: (i) user definable border color; (ii) automatic powering down of the digital analog converter (DAC) component of the VGA RAMDAC and monitor sense comparator for LCD monitors when the RAMDAC is not in use; (iii) stopping of the RAMDAC clock for LCD monitors when the RAMDAC is not in use; and (iv) true color support.

Abstract: A method and apparatus for deleting and rescanning areas of a horizon display on a computer monitor is disclosed. A cursor, controlled by a pointing device such as a mouse, is directed to a first area on the monitor which is adjacent a second area of the horizon which is described to be deleted and rescanned. The cursor is dragged from the first area across the second area while a user pushes the control button of the mouse thereby defining coordinates of an area for which all points are to be deleted. The points in the first area are scanned to designate them as seed points. Such seed points are used to pick horizon points in the second area. Such picked points are then used to fill-in the second area.

Abstract: Signal management control units 47.sub.1 -47.sub.n of respective scan drivers LSI in an LCD module are cascade-connected and each have the same construction. A detected signal of the signal management control unit 47I is a data signal latch clock LP applied to a terminal CKB.sub.1. A detected signal of the signal management control unit 47.sub.2 is a frame start signal SP applied to a terminal CKB.sub.2. A detected signal of the signal management control unit 47n is an AC-transforming clock FR applied to a terminal CKBn. The signal management control unit 47.sub.1 includes a signal stop detection circuit 48 serving as a signal detection means for detecting a stop of the detected signal and a sequence processing circuit 51 consisting of a signal delay circuit 49 and a logic circuit 50. When stopping oscillations of, e.g., the frame start signal SP, outputs T.sub.1 -T.sub.n of the circuit 51 change to an L level. Hence, a display-off signal DF of the LCD module assumes the L level.

Abstract: A liquid crystal active matrix display device includes a first substrate having a thin film transistor formed thereon. A light-screening film 1 is located on the first substrate in a manner to be overlapped with an ITO. The display device includes a second substrate having a color filter and a light-screening film 2 formed thereon. The second substrate is opposed to the first substrate. The light-screening film 2 extends from the uncontrollable area by a certain value depending on a voltage from the external, resulting in improving a numerical aperture.

Abstract: Redundant segment display characters are used to provide a fail-safe indication of critical parameters. In one preferred form of the invention, selected segments of a redundant segment character include pairs of segments that are arranged proximate to each other and extend generally parallel to each other. The pairs of redundant segments are activated simultaneously in response to multiplexed fore plane and back plane drive signals applied to conductive regions of a liquid crystal display. The remaining portions of the redundant segment character each comprise single activated regions. The portions of the display character that include redundant segments are selected to minimize errors in reading a numeric value indicated by the character in the event that one of the segments fails to operate properly. In another preferred form of the invention, all of the portions of the character are pairs of redundant segments. In yet another embodiment, the pairs of redundant segments are arranged serially, end-to-end.

Abstract: A method and apparatus of displaying performance metrics of a cellular communication system (50) having a call routing element (51), control elements (55, 56, 57, 58) and transceiver elements (59, 60, 61, 62, 63) provides for creating a hierarchical display (10) of the call routing element, the control elements and the plurality of transceiver elements with the call routing element depicted at a center of the hierarchical display and the control elements and transceiver elements radiating outwardly from the center in a hierarchical order. The user or the system selects a performance metric of one of the call routing element, the control elements and the transceiver elements, and the selected performance metric is displayed for each of the call routing element, the control element and the transceiver elements within the hierarchical display.

Abstract: A back illuminated array of display elements each of which comprises a vane rotatable between two positions by interaction between an electromagnet and a permanent magnet attached to the vane. The electromagnet includes a monolithic member of soft magnetic material having a U-shaped portion and a flange portion end is configured in such a way as to reduce the reluctance of the magnetic circuit comprised by the electromagnet and permanent magnet. The monolithic member can be arranged to provide a bearing for the rotatable vane.

Abstract: An information reference method includes a computer, a storage unit for storing display information to be processed by the computer, a display unit for displaying display information stored in the storage unit, and an indication unit for indicating any desired point on the screen of the display unit. The information reference method comprises a step for displaying a portion of display information stored in the storage unit, a step for indicating any desired point of a display image on the screen by the indication unit, and a step for selecting one of a plurality of display information linked in advance to a displayed image. The information retrieval method further comprises a step for providing, within display information, link information for showing the degree of relevancy between a displayed image and the plurality of display information, and a step for mutually comparing link information at an indicated point to decide display information to be selected.

Abstract: A hand-held device produces an omnidirectional beam of infra-red light which can be aimed by the user. A plurality of detectors positioned in a rectangular array adjacent a video monitor and each detector produces an electrical signal that varies as a function of the light intensity impinging thereon. A circuit compares the signals from the detectors to determine coordinates of a position on the monitor at which to place a cursor. A linear transfer function is applied to the detector signals before determining the coordinates. The coordinates are processed by a seventh order recursive digital filter and the resultant position must be a minimum distance from the present position before the cursor is relocated. By varying the direction of the light beam the cursor position can be changed. When the cursor is at the position desired by the user, the hand-held device is activated to produce a different light beam.

Abstract: A display control device for a level meter, including a BPF for performing a band-pass filtering of an audio signal to obtain a plurality of frequency components. The BPF obtains an average level of each frequency component of the audio signal. A variable resistor divides a power source voltage. An A/D converter converts the frequency components of the audio signal, the average level and the divided voltage into digital signals. A display controller displays the levels of the frequency components and the average levels thereof on an LCD. The display controller holds a peak value of one of the frequency components or the average levels thereof, and the peak hold time is determined on the basis of the divided voltage. The peak hold time can be freely changed depending on tastes and uses of users.

Abstract: In a method for driving an active matrix liquid crystal display panel, a selection signal composed of a scan signal superimposed with a modulation signal is sequentially supplied to the scan signal lines one by one, so as to turn on the thin film transistors connected to the scan signal line applied with the selection signal so that a video signal is applied from each of the video signal lines through the associated turned-on thin film transistor to the corresponding pixel electrode and stored in the corresponding storage capacitor, whereby an image is displayed. The selection signal is configured to assume a first potential which is a high voltage, a second potential which is lower than the first potential, and a third potential which is lower than the second potential.

Abstract: An image editor stores color pixels for an image to be edited in an image pixel buffer and a lookup register bank. The stored image is displayed on a monitor. An operator uses a mouse to designate a screen path that identifies an object in the image, and pixel position data is detected for the screen path. A programmed computer determines in real time one or more criteria for a search controller on the basis of hue, saturation and luminance variables which are determined from the stored pixel color data for pixels along the screen path. The computer further searches the image pixels to identify the object and its boundaries in accordance with the search controller criteria, and applies color edit actions to the identified object within the image.

Abstract: A display driving/controlling integrated circuit includes a display memory for storing data to be supplied to a display unit, a bus line of n-bit configuration for transmitting display data to be stored in the display memory, with n bits set as one unit, and a data array direction selection circuit connected to the bus line, for outputting display data on the bus line to the display memory with the bit array thereof kept in the original bit array status or outputting the display data to the display memory with the bit array thereof inverted with respect to the original bit array. There is provided means for writing display data with the bit array thereof inverted with respect to the original bit array when the display data is written into the display memory.

Abstract: A pattern processing apparatus comprises: a first memory which has character pattern data as coordinate array points and stores data indicating whether the coordinate points are the points constructing an outline of a character pattern or not; a second memory which stores absolute coordinate values as a reference point in the case where the coordinate points are not the points constructing the outline of the character pattern and also stores relative coordinate values from the reference point or another outline point or the absolute coordinate values as a reference point in the case where the coordinate points are the points constructing the outline of the character pattern; a reading device for receiving a character code and for reading out the coordinate data corresponding to the character code from the first or second memory on the basis of the character code; and a pattern forming device to form a character pattern corresponding to the character code from the coordinate data.

Abstract: An optical signal detector for an electro-optical mouse comprising elliptical lenses for X-axis and Y-axis to longitudinally latitudinally magnify X-axis and Y-axis images taken on a grating work pad, permitting longitudinal magnification to be greater than latitudinal magnification. Receivers respectively receive magnified X-axis and Y-axis images so as to provide signals indicative of the direction and amount of movement of the optical signal detector for moving the visible cursor from position to position on a display screen.

Abstract: A continuous loop multi-axis pointing position control device is provided permitting continuous rotation about an X-axis to provide generation of a first motion signal and a continuous rotation about a Y-axis to provide generation of a second motion signal to enable directional control of a cursor or pointing device on a computer screen and to substitute for track ball, joystick and mouse control devices.

Abstract: A system for customizing the ramp voltage pulses used to drive an active matrix liquid crystal display. The customized ramp voltage compensates for brightness problems associated with any number of parameters. The V (ramp) also can allow for customized dimming of portions of the display. The standard V (ramp) is replaced with a variable wave form correlated to the timing of the driving of the LCD. The wave form can compensate for changes in brightness caused by off axis viewing angle or can compensate for brightness changes caused by temperature. Also, the system is directed to spatially modulating brightness of pixels for an active matrix LCD to correct color or brightness problems. A driving voltage wave form, which is varied as a function of location on LCD and grey scale is generated to cause selected sets of pixels to be adjusted from an instructed grey scale.

Abstract: A portable wordprocessor has a main body and a display support assembly hinged to the main body. The main body has an information entry keyboard, a function keyboard, a control circuit board and a floppy disk drive. The information entry keyboard and the function keyboard have key tops the heights of which do not exceed the height of the portion of the main body which accommodates the floppy disk drive. The information entry keyboard is disposed along the front edge of the main body, while the function keyboard is disposed between the information entry keyboard and the rear edge of the main body. The floppy disk drive is disposed in lateral alignment with the function keyboard. The display support assembly supports a liquid crystal display device which includes a liquid crystal display portion and a liquid crystal control circuit board which is disposed around the liquid crystal display portion and has a thickness which does not exceed the thickness of the liquid crystal display portion.

Abstract: A method and apparatus which provides bi-directional communication between a video monitor and a computer system unit. This enables the video monitor to inform the system unit of its capabilities without direct user involvement and also enables the system unit to directly control or adjust all the functions of the video monitor. In the preferred embodiment, bi-directional communication between the video monitor and the system unit is provided utilizing a mouse port in the keyboard controller. Multiplexors are coupled between the mouse port and each of the mouse and video monitor to select between data paths and selectively allow communication between the system unit and the video monitor. Monitor control software is included in the system unit which can be used to control or adjust the output of the video monitor.