Abstract: A plasma driving circuit for sequentially discharging and driving a plurality of plasma channels. The circuit comprises a plurality of complementary switches provided correspondingly to the plasma channels; a constant current source connected in common to each of the complementary switches and supplying a predetermined discharge current thereto; a scanner for sequentially controlling the on/off actions of the complementary switches and distributing the discharge current to the corresponding plasma channels; and a suppressing circuitry included in the output stage of each of the complementary switches and serving to suppress the output of a rush current which results from a capacitive component existent in each of the complementary switches. The suppressing means is a diode element having a capacitive component sufficiently smaller than the capacitive component existent in each complementary switch, and a resistance element is connected in series to the diode element.

Abstract: An alpha-numeric display arrangement, designed to be vandal-proof, has an opaque mould plate mounted on the reverse of a metal front plate. Elongate apertures in the front plate each form one of a plurality of segments of the alpha-numeric display. Elongate apertures in the mould plate are each accurately aligned with a respective one of the apertures in the front plate. Molten transparent material is introduced to a required level in each of the contiguous aperture pairs. A space is left above the solidified material in which a light emitting diode mounted on a lighting board is received. Thus, each of the apertures is provided with a light emitting diode which is in optical communication with the transparent material provided within each of the apertures.

Abstract: A data-dependent color display for vector data separates chrominance from a video signal as a pair of orthogonal chrominance components. The pair of chrominance components are used as addresses to access a vector memory. An intensity value at the location within the vector memory accessed by the chrominance pair of addresses is incremented by each such access. During a display cycle the intensity values from the vector memory are converted into color values as a function of their locations within the vector memory. The color values are displayed in a display area on a display screen to provide a colored vector display where the color at any point along the vector display is a function of the point's angular position with respect to a center of the display and distance from the center.

Abstract: A time-domain graphic synthesis method and apparatus form M single-bit patterns of length N to convert multiple-bit grayscale pixel data into single-bit binary display signals. M designates the number of gray levels to be displayed. N specifies a selected pattern size for usage in converting gray levels into perceived grayscale pixel data and advantages are gained if N is defined to be a prime number. Each of the N-bit binary patterns identifies a particular gray shade and each pattern, by definition, includes a plurality of ones and zeros. The ratio of the number of ones in an N-bit pattern to the total number N defines a relative intensity for that N-bit pattern. The relative intensity is indicative of and corresponds to the particular gray shade. The M single-bit patterns of length N are applied to a display which stores multiple-bit grayscale pixel data so that the column location of a pixel is converted to modulo-N form to designate one of the N bits of the pattern.

Abstract: A frame size regulating circuit capable of simultaneously controlling horizontal and vertical sizes to simply vary a frame size includes a key matrix formed by plural keys for simultaneously varying horizontal and vertical sizes of a frame, and a microprocessor which generates plural pulsewidth modulation signals for determining the frame size according to an externally-supplied horizontal sync signal and vertical sync signal and scans a key selected in the key matrix to generate plural frame size variation signals. A frame size determinator part provides a horizontal size determination signal of DC component and a vertical size determination signal of DC component according to the plurality of pulsewidth modulation signals, and a frame size variable part varies magnitudes of the horizontal size determination signal of DC component and of the vertical size determination signal of DC component according to the plural frame size variation signals to vary the size of the frame.

Abstract: A plasma display device is capable of creating a screen of high quality without generating half tone noise in the succeeding frames irrespective of the arrangement or the turn-on state of the subframes in a preceding frame that is being displayed. A picture of a frame is displayed on a plasma display device by combining a plurality of subframes SF1 and Sfn having different degrees of brightness. Each of the plurality of subframes SF1 and Sfn includes a totally writing and totally self-erasing period S1, an address period S2, a sustain discharge period S3, and a quiescent period S4 determined by a difference between the sum of the periods S1 to S3 and a period of a vertical synchronizing signal Vsync.

Abstract: A computerized method, containable in a computer memory device, is disclosed for tristimulus color space coordinate data nonlinear storage, retrieval, and interpolation, and, more specifically to memory mapping and data interpolation for 24-bit L*H*C* to 24-bit RGB color mapping (three 8-bit words to each coordinate). Predetermined output tristimulus color space coordinate data points are stored in nodes of a memory construct based upon use of input values of a cylindrical-based tristimulus color space coordinate system, where a non-linear selection of stored data points is provided in the memory construct. The number of linear interpolations of each of the coordinates is determined by the number of available bits in each data word after providing sufficient bits to address the surrounding stored nodes.

Abstract: A first picture composed of first pixels including a first number thereof arrayed in a first direction and individually having a first image data is multiplied to provide a second picture composed of second pixels including a second number thereof arrayed in a second direction and individually having a second image data. An association is effected between each of the first number of first pixels and a total of h of the second number of second pixels, where h is an integer digitally equivalent to a multiplication factor, before a total of h fractions of the first image data are distributed to the h second pixels, as the second image data thereof, so that a compositional context of a first image representable by the first image data is substantially left in a second image representable by the second image data, permitting a directionally deformable multiplication of a digital picture.

Abstract: A fluorescent display device is disclosed which includes: a cathode unit including a plurality of cathodes arranged in a matrix array; an anode unit including first and second groups of anode electrodes disposed above the cathode unit, arranged parallel to each other and coated with a fluorescent substance, the anode electrodes of each group being connected commonly with each other by wiring, the anode electrodes of one of the first and second groups being disposed as alternating with those of the other group; a voltage applying circuit for applying voltages of opposite polarities respectively to the first and second anode portions and alternating the polarities of the voltages; and a display controlling circuit for controlling electron emitting positions on the cathode unit and said voltage applying circuit.

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

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 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.

Abstract: A driver circuit for a liquid crystal display device has an output terminal, an N-MOS transistor, a P-MOS transistor, a first semiconductor switch connected between the output terminal and the N-MOS transistor and, a second semiconductor switch connected between the output terminal and the P-MOS transistor. Each of the N-MOS transistor and the P-MOS transistor have source, drain, gate and substrate, and form a power source portion taking the source as an output side. The first and second semiconductor switches have control inputting means for inputting a switching control signal for alternately outputting the output voltages of the N-MOS transistor and the P-MOS transistor through the output terminal. The drain, gate and substrate voltages are set so that the output voltage output from the N-MOS transistor is greater than the output voltage output from said P-MOS transistor.

Abstract: A pointing device includes a housing, a ball, and a cleaning member. Part of the ball protrudes from an opening of the housing. The cleaning member is pressed against the ball by a mechanism including a rod and a resilient member. The rod is made slidably movable in first and second directions. One end of the rod is connected to the cleaning member. The other end of the rod protrudes from a hole of the housing to form a button. The cleaning member is brought into contact with the ball when the button is pushed in the first direction. The resilient member forces the rod in the second direction to separate the cleaning member from the ball during normal operation.

Abstract: A computer system, article of manufacture, and method direct a computer system, having at least a processor, memory, and touchscreen, to create a virtual pointing device. The method includes the steps of detecting a hand placed on the touchscreen creating a virtual pointing device on the touchscreen under at least a first portion of the hand, wherein at least a first area of the virtual pointing device is assigned a command, in response to activating the first area of the virtual pointing device, executing the command, and in response to movement of at least a second portion of the first portion of the hand, redefining the command.

Abstract: A plasma-addressed electro-optic display device having a layer of electro-optic material, data electrodes coupled to the electro-optic layer and adapted to receive data voltages for activating portions of the electro-optic layer, and a plurality of plasma channels extending generally transverse to the data electrodes for selectively switching on the electro-optic portions. The plasma channels each contain spaced elongated cathode and anode plasma electrodes and an ionizable gas filling. The cathode and anode electrodes are arranged in groups to reduce the connections required. Reference voltages are applied to the grouped cathode and anode electrodes such that the data voltages required to operate the panel are reduced decreasing vertical crosstalk. Various driving voltage waveforms can be used for further crosstalk reduction, to reduce the number of voltage levels required, and cause the cathode and anode electrodes to exchange roles during operation to extend lifetime.

Abstract: In an active matrix type liquid crystal display device, a time gradation display manner for performing time gradation display is used. A digital gradation (voltage) signal on a signal line is supplied to the digital memory circuit arranged in vicinity of each pixel electrode and stored therein for a desired period of time. This storage state is held until next scanning is started. A high voltage or a low voltage supplied as a power source voltage of the digital memory circuit is applied to a pixel electrode while the digital memory circuit is in a storage state, so that a desired voltage is stably applied to the pixel electrode.

Abstract: A gray-scale level signal V.sub.a, which is applied to each pixel on a selected gate bus, is added, with its polarity inverted every frame period, to the first and second source bias voltages V.sub.S+ and V.sub.S- which are generated alternately every frame period, and the resulting voltages are each provided as a source voltage V.sub.S to respective source buses. On the other hand, a gate voltage V.sub.G, which is applied to each gate bus, includes a period of a high-level gate pulse which turns ON a thin film transistor during about one horizontal scanning period H in each frame period, a gate bias period during which either one of first and second gate bias voltages, which alternate every frame period, immediately precedes the rise of the gate pulse, and a low-level period except these periods. The gate voltage is applied to the respective gate buses so that the gate pulses provided thereto are sequentially displaced one horizontal scanning period apart.

Abstract: A coordinate detection system capable of displaying relevant coordinates when operated with only one fingertip or like coordinate designator even during a repeat operation of the latter with no complicated designator manipulations required. The system comprises a coordinate detection apparatus and a coordinate output apparatus. The coordinate detection apparatus includes a sensor substrate to be operated by the coordinate designator, scan driving output units for generating a detection signal in response to the coordinate designator operation, and signal processing units for extracting tap and slide component data from the detection signal and supplying the extracted data to the coordinate output apparatus.

Abstract: A multilayer substrate material for a subtractive-color electrical twisting ball display. The material is composed of a layered substrate including first, second, and third layers, each layer of the substrate being a nearest neighboring layer with respect to at least one other layer and no more than two other layers. Spheroidal balls are disposed in each of the first, second, and third layers. In the first layer, each ball has at least two component regions including a component region having a first chromatic color, such as transparent cyan. In the second layer, each ball has at least two component regions including a component region having a second chromatic color, such as transparent magenta. In the third layer, each ball has at least two component regions including a component region having a third chromatic color, such as transparent yellow.