Abstract: A second group of drive voltages V3 to V5 has a voltage range that is separate from, and does not overlap a first group of drive voltages V0 to V2. The first group of drive voltages V0 to V2 is supplied from first power sources VDD and VSS through operational amplifiers OP1 and OP2. The second group of drive voltages V3 to V5 is set with reference to VEE, and is supplied from the first power sources VDD and VSS through the operational amplifiers OP1 and OP2. Voltage conversion capacitors C11 and C12 are charged by turning on and off a first group of switches SW11 to SW13, and are discharged by turning on and off a second group of switches SW14 to SW16, thus causing the output of the second group of drive voltages V3 to V5 which have references to VEE.

Abstract: A touch-pad digital computer pointing-device, for controlling a position of a cursor appearing on a display screen of a digital computer, senses and resolves respective locations within an active area at which concurrent multi-finger contacts occur. Multi-finger contacts with the active area activate or deactivate a drag-lock operating mode, computer power conservation, and other touch-pad operating characteristics such as the touch-pad's sensitivity to finger contact. The touch-pad also senses a velocity and direction for finger contact with the active area for use in transmitting data to the computer which effects continuous cursor movement across the computer's display screen in a direction fixed by the initial direction of contact movement across the active area. While there is no finger contact with the active area, the touch-pad monitors the active area and adjusts its operation to compensate for changes in the surrounding environment such as changes in temperature, humidity and atmospheric pressure.

Abstract: Described and shown is a joystick for measuring movement of, or force and torque against, a manually operated handle in six degrees of freedom. The degrees of freedom include translational motion or force along each of three orthogonal axes and rotational motion or torque about each of the axes. Also described and shown is a circuit for interfacing the joystick to a standard computer port.

Abstract: An interface device, such as a mouse input device, is used to provide input to a computer system or alternatively to a telephone system. The motion of the mouse input device over a first surface is detected. Selections made by a user on a mouse selection key are also detected. Numeric entry is received from numeric entry keys on a top surface of the mouse input device. In the preferred embodiment, the numeric keys are arranged as a dialpad for a telephone.

Abstract: A computer system includes a display screen, and is capable of displaying in a portion of the display screen (i.e., a "window") a portion of display data generated for display on the entire display screen. The computer system includes a first memory structure for storing data generated for display on the entire display screen, the fist memory structure receiving data in a manner independent of the size and location of the window on the display screen. A second memory structure contains data corresponding to the data stored in at least a selected portion of the first memory structure at a first point in time, where the portion corresponds to the display data displayed in the window.

Abstract: A circuit for translating pixel data to be displayed on the output display of a computer system including a plurality of color index maps for providing a first set of digital values of shades to produce a final color on an output display in response to color index values; and a plurality of gamma correction maps for providing a second set of digital values of shades to produce a final color on an output display in response to the first set of digital values of shades.

Abstract: Methods and apparatuses for generating an image for display without creating a scaled bitmap. One or more bytes of digital data corresponding to portions of the image are received, scaled horizontally and vertically for display, and transmitted for display. In a preferred embodiment, encoded data corresponding to the image are decoded before being scaled for display. In an alternative preferred embodiment, analog signals corresponding to the image are generated, decoded, digitized, captured, compressed, and decompressed. The data displayed may be either the captured data or the decompressed data.

Abstract: A liquid crystal display apparatus comprises a plurality of signal lines and scanning lines which are arranged so as to extend in directions orthogonal to each other and cross each other at cross portions, a plurality of pixel electrodes respectively provided at the cross portions so as to form a matrix arrangement, and a plurality of thin film transistors respectively provided between the pixel electrodes and the signal lines and respectively having gates connected with the scanning lines, for functioning as switches for writing image signals which are supplied from the signal lines into the pixel electrodes, picture change detecting means for detecting a change between still and moving pictures in a direction of time-axis included in a display image, and gate signal change means for changing the number of interlaced scanning lines in accordance with a change component detected in the picture change detecting means.

Abstract: An apparatus for conserving power in information devices with dual functions. A single display panel is logically split into two sub-panels. Each sub-panel can be powered up or down separately as is required by the function of the device. The display panel has a plurality of improved segment drivers which are provided power signals enabling the set of segment drivers corresponding to a sub-panel to be separately powered. In systems with two separate display panels, each of the panels may be powered up or down by the use of similar improved segment drivers as necessary.

Abstract: In a method and apparatus for reducing the number of matrix operations when converting digitized RGB color space signals to digitized YCbCr color space signals, at least two color difference signals, each being in terms of any two of the digitized RGB color space signals, are generated before performing first, second, third and fourth matrix multiplication operations of the color difference signals. The first and second matrix multiplication operations have first and second results to be used in conversion for the digitized Y color space signal. The third matrix multiplication operation has a third result to be used in conversion for the digitized Cb color space signal. The fourth matrix multiplication operation has a fourth result to be used in conversion for the digitized Cr color space signal.

Abstract: The synchronization signal processing circuit of a monitor for protecting the cathode ray tube includes a rectifying unit for rectifying a synchronization signal supplied from the outside; a first inverting unit for inverting the rectified signal and generating a first inverted signal; a control unit for controlling the output of the first inverted signal according to the synchronization signal by being switched on; a second inverting unit for delaying the rectified signal for a predetermined time period, inverting the delayed rectified signal, and generating a second inverted signal; and a synchronization signal outputting unit for buffering the first and second inverted signals and applying the buffer signal to a microprocessor, a video signal processor and a deflection circuit respectively. Accordingly, even while there is no input from the keyboard for a certain time period, the fluorescent screen of the CRT can be protected since the point of the screen to which the video signal is injected changes.

Abstract: Color display device including a plurality of electron transport ducts for transporting electrons in the form of electron currents, and selection electrodes for extracting each electron current from its transport duct at predetermined locations and for directing them to different color pixels of a luminescent screen. The color selection time fractions during which the color pixels are activated are different for different color pixels in such a way that the color selection time fraction for the color pixel which requires the largest quantity of electrons for displaying maximum white is longer than the color selection time fraction of the color pixel which requires the smallest quantity of electrons for this purpose.

Abstract: A display device in which an internal auxiliary voltage, which is used for controlling, is obtained via photovoltaic converter.

Abstract: A data compression apparatus and method of displaying graphics in a computer system employs a full frame buffer and compressed frame buffer wherein pixel data is sent to a display device and concurrently compressed and captured in parallel so that subsequent unchanged frames are regenerated directly from the compressed frame buffer.

Abstract: A computer control device which provides spacial information to a computer or electronic game by sensing the linear acceleration or tilt angle of the control device. The computer control device includes an accelerometer having an enclosure containing a fluid and temperature sensing elements positioned within the enclosure. The fluid moves across the temperature sensing elements in free convection during acceleration or inclination of the enclosure causing a temperature differential between the temperature sensing elements which is measurable. The control device incorporating one or more of these accelerometers senses acceleration or tilt in one to three dimensions and may be used to control a cursor on a computer screen, a display of a virtual reality device, or other computer and electronic game displays.

Abstract: A light transmission screen having strong mechanical strength, enhanced image resolution, extremely narrow joints between screens and the like, consisting of a light transmissive panel, a lenticular lens sheet stacked on the light incident side of the light transmissive panel, a Fresnel lens sheet stacked on the light incident side of the lenticular lens sheet and optionally a light transmissive film stacked on the light incident side of the Fresnel lens sheet. The periphery of the light transmissive film or the periphery of the Fresnel lens sheet is joined to the light transmissive panel, resulting in the light transmissive panel, lenticular lens sheet, Fresnel lens sheet and light transmissive film being formed into a single-piece construction.

Abstract: In an information picture display device using a double-picture type screen, a TV microcomputer controls a double window processing unit, an information processing unit processes information data received from a value added network and recognizes a selected screen mode to then output a switching control signal. The device is constructed so that the output of a switching unit for selecting one of a sub-video signal and a signal processed in the information processing unit is input to the double window processing unit, thereby displaying an information signal on the entire double-picture type screen, displaying the information signal and a TV signal separately on partitions of the double-picture type screens, or displaying the information signal superimposed on the TV signal. When the information signal is displayed on the entire screen, the signal processed in the information processing unit is displayed directly without passing through the double window processing unit, thereby improving picture quality.

Abstract: A computer input device is used in conjunction with a mouse input device. The computer input device of the invention comprises a body having a resilient layer covered by a surface layer textured throughout the entirety of the surface for operation of the mouse. A printed circuit card is incorporated in the body between the resilient layer and the upper surface layer and includes a plurality of capacitive touch sensor pads. The card further includes electronic circuitry for operating the touch sensor pads to detect when a capacitive object, such as a fingertip, is in the proximity of a sensor pad. A touch need not apply force to register. The printed circuit card includes a guard ring pad surrounding the touch pads which detects the presence of the mouse over the sensor pads and indicates that any detected outputs from the sensor pads are not valid, but instead are due to the presence of the mouse.

Abstract: A start pulse vertical signal generator using a data enable signal for precharging is disclosed. A clock pulse vertical (CPV) signal generator generates a CPV signal by counting a main clock signal and a data enable signal. A pulse signal generator generates reset pulse signals and delayed pulse signals by using a data enable signal and the CPV signal. A pre-start pulse vertical (STV) signal generator generates an STV signal by using the CPV signal and reset pulse signals and delayed pulse signals. Accordingly, the present invention generates the pre-STV signal two clock pulses of the CPV signal before the data enable signal DE is generated.

Abstract: A remote operation apparatus comprises a MA term having a video display, an operation data generator, and a parameter data generator and at least a slave term, coupled to the MA term through at least a network, including operation data receiver, a video data generator and a display, a screen parameter receiver, and a video data acquiring portion. The operation data generator generates and transmits operation data to the video data generator of the slave term to generate and display video data. The screen parameter data generator generates screen parameter data indicating required video data and quality and transmits it to a video data acquiring portion acquiring the generated video data in the required region and quality and transmits it to the display of the MA term. A resource data of the networks and interface ckts is held by the slave term and is transmitted to the screen parameter data generator to utilize the resource data for generation of the screen parameter.