Abstract: A method and arrangement for establishing networks of electro-optical display-field modules. Mechanical connection technology is provided for the network by direct or indirect coupling of the transmission and reception devices provided in the individual display-field modules. The transmission of information is performed over an optical bus system established by the transmission and reception devices of adjacent display-field modules.

Abstract: An electronic apparatus includes: a display screen; a power supply switch; a memory for storing a plurality patterns of graphic data, select information indicating which graphic data is selected, and the number of times by which the power supply switch is operated; a controller responsive to the power supply switch being operated for controlling the display screen to display graphic data of a pattern specified by the select information; and a device for updating in accordance with a predetermined scheme the select information and the number of times of operation of the power supply switch, if the power supply switch is operated and the number of times of operation of the power supply switch satisfies predetermined conditions. For example, when the power supply switch is operated a predetermined times, a dialog screen for selecting the next pattern is displayed.

Abstract: On a matrix form display panel which realizes a display device with a high image quality, the return circuits of condensers, connected to picture elements in the last row among picture elements arranged in a matrix form, are connected to a common line independently of the return circuits of the condensers in the other rows, a common electrode driving circuit is provided, and a common electrode driving voltage is applied, whereby the effective values of driving voltages applied to the picture elements in the last row are equalized to the effective values of driving voltages applied to the picture elements in the other rows. Thereby, all the picture elements forming the panel are equal in optical transmissivity, and as a result the displayed image quality is improved. Additionally, since the last scanning line can be used for displaying, the utility factor of display panel is enhanced.

Abstract: This method is most advantageous when an analog multiplexer is controlled to pass either analog graphics signals or analog motion video signals to a multimedia display screen. In the preferred embodiment, this method includes the steps of outputting a digital color key from a graphics memory buffer at a designated time and for a designated period and then converting this color key to an analog signal. This analog color key signal is then detected during this designated period and stored to obtain a stored color key value. The graphics memory is then controlled to output the graphics signals to be displayed on a multimedia screen. These graphics signals include a digital color key for controlling a multiplexer to display a motion video window on the multimedia screen in place of the color key. The outputted graphics signals are converted into analog signals, and these analog signals are compared to the stored color key value for detecting whether a color key is being outputted in the graphics data stream.

Abstract: A digital to analog converter is described for a multimedia system in which the magnitude of the analog output is controlled by signals applied to level select inputs of the digital to analog converter. Digital signals to be converted to an analog output are connected to a different set of inputs. This converter is advantageous for use in a display system where the brightness of the display may be independently controlled by the signals applied to the level select inputs. In this way, the digital information signals to be converted to an analog signal need not be modified to increase or decrease the brightness of the display.

Abstract: A flat panel display device having formed on a drive substrate, a logic circuit for combining a first inspection-use output of a horizontal scanning circuit and a second inspection-use output of a vertical scanning circuit and a combined inspection-use output terminal for outputting the combined inspection-use output obtained through the logic circuit. Another flat panel display device of the present invention has switch circuits for using a first input terminal of the horizontal scanning circuit as an inspection-use output terminal of the vertical scanning circuit and using a second input terminal of the vertical scanning circuit as an inspection-use output terminal of the horizontal scanning circuit.

Abstract: A coordinate detecting method for a liquid crystal display unit has the steps of generating a second display control signal for controlling a display provided in a display period and a non-display period on the basis of a first display control signal set such that one frame is constructed by only the display period; the display period and the non-display periods being set such that an image is displayed on a liquid crystal panel in the display period and is not displayed on the liquid crystal panel in the non-display period; storing transmitted image data to a memory in accordance with timings shown by the first display control signal; reading these stored image data from the memory in accordance with timings shown by the second display control signal; displaying the image on the liquid crystal panel by the read image data and the second display control signal; and detecting coordinates by a detecting pen in the non-display period.

Abstract: Each pixel consists of an image electrode formed on a first insulating substrate, a ferroelectrlc material portion formed on the image electrode, a pixel electrode formed on the ferroelectric material layer, a scanning electrode formed on a second insulating substrate, and a liquid crystal portion disposed between the pixel electrode and the scanning electrode. When an input signal is written to the respective pixels, a liquid crystal portion of each of pixels selected for display is supplied with an effective voltage that makes a transmittance of the liquid crystal portion smaller than 50%.

Abstract: An eye movement tracking display comprises an image generator having wide view angle image generation means and narrow view angle image generation means and functioning to produce an image for display in a wearer's field of vision, an image display for displaying the image produced by the image generator to the wearer, and an eye movement detector for detecting movement of the wearer's eye. The image display comprises an image display panel for displaying a low-resolution image received from the wide view angle image generation means, image processing means electrically connected with the panel for erasing the portion of the low-resolution image displayed at the region of the panel to which the wearer's eye is directed, and an image transmission element positioned behind the image display panel for directing a high-resolution image received from the narrow view angle image generation means to the erased region of the panel.

Abstract: An integrated input device which comprises: a contact sensor capable of producing an analog signal indicative of the location of the position which is touched; an A/D converter capable of receiving the analog signal output from the contact sensor and converting it to a digital signal; a computer capable of receiving the digital signal output from the converter, interpreting the digital signal and transmitting a digitized video signal in response to the digital signal; a video connector capable of receiving the digitized video signal output from the computer; and a display which is capable of receiving the output from the video connector.

Abstract: A plurality of filaments are stretched in parallel on a rear plate, and an insulating plate is provided so as to cover the filaments. In the insulating plate, a plurality of through-holes are formed along the longitudinal direction of the respective filaments for exposing parts thereof. Each through-hole and phosphor layers, which are provided on the insulating layer adjacent to the through-hole, constitute one unit picture element. The respective phosphor layers in the respective picture element are installed in a plurality of cavities formed in a rib provided on a lower surface of the insulating plate, whereby separated from the neighboring phosphor layers. The respective cavities function as a discharge room, with a light-transmissive front plate, formed on the rib, as a lid and a portion of the insulating plate corresponding to the phosphor layer as a bottom. The respective discharge rooms overlap the through-hole at one end in the longitudinal direction thereof.

Abstract: A circuit for driving an AC TFEL device which is a complete solid luminescence element, capable of generating positive and negative AC voltages from a single DC voltage by utilizing a relative potential difference and thereby providing a compact voltage supply unit required for driving the AC TFEL device. A circuit is also provided which is constructed to reduce the number of operating voltages required in the refresh drive method and the scan inversion symmetric drive method upon driving the matrix of the AC TFEL device by using a relative potential generating circuit. By employing such a circuit, it is possible to simply provide a voltage supply circuit required in a portable display system using the AC TFEL device and supply a voltage required for the refresh driving and the scanning sequence inversion driving by using only one clock control signal.

Abstract: A three-terminal liquid crystal (LC) lens cell includes a center-biased symmetrical quadratic electrode network that has a center electrode electrically coupled to a bias voltage source, and a first and a second network electrode circuit. The respective bias voltage terminus of each network electrode circuit is coupled to the bias voltage source, and the respective control voltage terminus of each network electrode circuit is electrically coupled to a selectively variable lens focus control power supply. Each network electrode circuit further includes respective pluralities of network electrodes electrically coupled together in series and quadratic gradient network biasing resistors respectively electrically coupled therebetween to provide a symmetric quadratic voltage pattern.

Abstract: A liquid crystal display is provided with a dummy-capacity driver for applying dummy capacities to scanning lines, in accordance with the number of on-state display elements and the number of off-state display elements in each scanning line. This arrangement makes it possible to suppress distortions that tend to appear in a waveform of the driving voltage upon inversion of the polarity. Thus, it becomes possible to obtain liquid crystal images of high picture quality with virtually no crosstalk when displaying any pattern.

Abstract: A system and method are disclosed for dynamically labeling touch sensitive buttons in a digitizing display. The display is partitioned into a main panel display region and a button panel display region. A touch overlay is also partitioned into a main panel touch region and a main panel display region. A button panel driver program defines button touch areas and button display areas enabling the dynamic labeling and relabeling of the touch sensitive buttons and the simultaneous touching of combinations of the buttons with either a touch input or a stylus input to the overlay.

Abstract: A method of reversing all of the pixels in an image word uses recursive steps of shifting the image word a varying, predetermined number of spaces, followed by filtering the shifted and unshifted words through a varying, predetermined mask. The number of cycles necessary to reverse an image word having 2.sup.n pixels is n cycles, plus one additional shifting step. This method of reversing a single image word is used to generate the mirror image of an input image. This image word reversal method is also useful for rotating an image word 180 degrees about an axis through its center.

Abstract: A manually operated rotary type display device comprises a device body of an elongated bar-shaped configuration having a plurality of light emitting cells provided on the surface of the device body and arranged in alignment along a longitudinal direction thereof to form a light emitting cell array, an operation fulcrum member mounted on one end of the device body and rotatable about an axis perpendicular to the longitudinal direction of the device body, a rotary marker secured to the operation fulcrum member for co-rotation therewith and having at least one mark, rotation detecting means for obtaining a relative angular position information between the device body and the operation fulcrum member and rotation speed information by detecting the mark of the rotary marker, storage means for storing an image data to be displayed by rotational scanning of the light emitting cell array, and display control means for reading out the image data sequentially from the storage means in synchronism with a detection signa