Abstract: A raster scan display system for eliminating jagged edges from vectors or polygon boundaries inclined within .+-.45 degrees to horizontal comprising a digital vector generator, a frame buffer memory, a color look-up table, digital-to-analog converters and convolvers placed in front of each digital-to-analog converter for each video output stage of the color look-up table. Fractional address data are appended to each pixel written into the frame-buffer memory to specify the true location of the pixel more accurately. Intensity data for each of the colors assigned thereto by the color look-up table are convolved with a kernel that is selected by the Y fractional address. The convolvers also process the X fractional address which controls the boundaries between pixels on a scan line. Fractional address data read out of the frame-buffer controls the kernels in the convolvers to render the positioning of pixels at four times the addressability of the frame-buffer.

Abstract: A display panel comprising of a semiconducting oxide between layers of a hole injector and an electron injector. The electron injector contains a metal oxide in a fine particulate form. When the electron injector is biased negatively with respect to the hole injector, both holes and electrons are injected and an image is formed by the trapping of electrons in color centers in the oxide layer. Reverse biasing erases the image.

Abstract: The present invention constitutes a display system (10) for alpha-numeric and graphic images. The system provides a signboard on which varying images of comparably large dimensions can be made to appear. The system comprises an input matrix (12), a display matrix (14), and a large number of optical conductors (16) such as optical fibers which interconnect corresponding parts of the matrixes. Optical images focused on the front face (15) of the input matrix appear in expanded form on the display face (24) of the output matrix. The system may be constructed from a large number of small units (60) comprising an input bundle (62), an output block (22), and a group of optical fibers (66). These units may be easily manufactured by a process involving a limited number of steps.

Abstract: A device for controlling an opto-electronic display device has dot-matrix display elements (15), a controller (10) which has an addressable dot-matrix character table (addresses 20-35; 36-41 as well as 45 (in part), 46 and 47), a program control device as character generator and at least one driver (19). Information can be displayed in dot-matrix form. In order to display, in parallel, other information in a segment display, the addressable dot-matrix character table has an additional, similarly addressable and structured table part (addresses 20-35 as well as 42-44 and 45 (in part)), in which, instead of dot-matrix data, segment data containing the segment character set are stored in a code which is constructed according to segment connections (electrode connections S1-S3; Z1-Z5).

Abstract: A method of driving a gas-discharge display panel in which a plurality of discharge cells constructed of display anodes and cathodes are arrayed in the form of a matrix, comprising affording a predetermined phase difference between a display pulse which is impressed on the discharge cell and a display pulse which is impressed on the discharge cell adjoining the former cell.

Abstract: According to a method and apparatus for displaying data on a display screen, such as the screen of a digital storage oscilloscope, in a ROLL mode and prior to a trigger event, newly acquired data is continuously newly displayed at a given point on the screen as the oldest displayed data is rolled off the screen at a first side. This is continued even during a REFRESH mode until a trigger event occurs, at which time the displayed data is frozen on the screen and newly acquired data is written across the screen toward a second side of the screen, so that at the time the newly acquired data is written to the second end of the screen, data is observable which represents a certain period before the trigger event and after the trigger event.

Abstract: An improved drive circuit for operating an electroluminescent display includes a circuit for biasing column and row drivers to maximize the energization voltage for illuminated pixels without reducing the contrast of the display. Interface circuitry is also provided for detecting the beginning of valid data for each line to be displayed, checking the selected display mode of the line and adjusting the timing of a system clock to completely and uniformly display characters in the 40-column, 80-column or graphics display mode.

Abstract: In the present invention, a full look-up table for 32 bits is disclosed. The look-up table is for interfacing the output of the memory frame buffer with a color monitor in a digital, color graphics display apparatus. The look-up table duplicates some of the output lines of the memory frame buffer as the input to the look-up table. The input lines and the duplicated input lines are supplied as address input lines to a first memory bank. The output of the first memory bank at the address selected by the input lines are received by a second memory bank as the address input lines therefor. The output of the second memory bank is supplied yet to the third memory bank as the address input lines thereto. The output of the third memory bank forms the output of the look-up table.

Abstract: Disclosed is an ac plasma display of the type employing three electrodes per pel which is useful for full color displays. A phosphor layer is provided over the cover electrodes and the usual electron emission layer is eliminated or thinned down. An additional pulse is provided to the cover electrodes to aid in charge transfer during the write stage in order to compensate for the absence of significant electron emission.

Abstract: An information device is provided with a storage unit for storing information, with an input element comprising keys, with a memory including a plurality of memory locations, with a computer, and with a unit connected to the storage unit to display the information stored therein. Command sequences which can predetermined are stored in the memory locations in the form of status blocks, the computer having access to the command sequence in each status block. Memory locations in the respective status blocks are associated with the keys so that when one of the keys is actuated, the associated memory location in the status block actually called up by the computer is activated to release an address signal which is used by the computer to control release of information from the storage unit, which released information is displayed through the display unit. The information stored in the storage unit may be used for sales promotion, and may contain details about a product or the like.

Abstract: In a head up display apparatus for an automotive vehicle including a projector unit disposed at the ceiling of the automotive vehicle to project display images and a half-mirror reflector unit for reflecting the projected display images to the driver, the height of the half-mirror reflector unit and the angular position of the projector unit are automatically adjusted according to vehicle speed, so that virtual display images can be appropriately seen by the driver ahead of the half-mirror reflector unit along the driver's eye direction variable according to vehicle speed, by use of a relatively small half-mirror reflector unit.

Abstract: The present invention offers a method and system for checking the legality of a user who is subscribed in a telephone system, for example. When a user wants to access an information system operated by the host computer of said telephone system, e.g., a data-base, the legality of the user, whether he is really a person who is registered in the host side, is checked in the host side before a line is established between the user and the host computer.In detail, the host side modem first checks the user who is then checked by the host side modem and the processing unit of the host side computer. Thereafter, mutual communications, between the user and the computer, are allowed.The system, based on the invention, comprises a host side modem connectable to the processing unit of the host computer, and a user side modem connectable to said host side modem. Said host side modem can check user while said processing unit being capable to check user through the interaction with the host side modem.

Abstract: An information processing system comprises a display apparatus having a display screen which can be held in position of either vertical elongation or lateral elongation. The information processing system provides the operator with messages necessary for operation. By detecting the position of elongation of the display screen, data for the messages are selectively rotated so as to be always displayed uprightly on the display screen.

Abstract: The present invention relates to a video attributes decoder for color or monochrome display in the videotext mode or in the high-resolution alphanumeric mode, with a choice, in the videotext mode, between the alphanumeric and the semigraphic mode. The decoder is made up of a clock circuit (25), a configuration register (23), a character atrributes register (22), a line attributes register (32, 33), an attributes decoding circuit (21) connected to these various registers, a character masking circuit (41), a serializer (40) connected to the masking circuit (41) and to the clock circuit (25), a background inversion circuit (53), a character color control circuit (51) and a background color control circuit (52). The last three circuits are connected at the input to the attribute decoder circuit and at the output to the circuit (50) for multiplexing and controlling the monitor guns. The output (402) of the serializer circuit (40) is transmitted over a dot broadening circuit (54).

Abstract: An image synthesizer to which outline point information of an image is supplied from an image information supply source.

Abstract: Method and apparatus for achieving unlimited and variable presistence in a digital oscilloscope having a samplier, analog-to-digital converter, high speed memory, microprocessor, linked list memory, display memory with bits corresponding to pixels on a raster display screen and hardware for refreshing the screen from memory. Variable persistence controls the length of time waveform data persists on a display. Waveform data persists indefinitely with unlimited persistance. For unlimited persistence, analog data is acquired by the sampler, converted to digital, stored in high speed memory, converted to coordinates corresponding to appropriate pixels, and corresponding display memory bits are set. For variable persistence, linked lists are maintained for each column on the display screen, each link containing a row coordinate and time remaining before erasing variable.

Abstract: A display apparatus for displaying a dot pattern comprises a memory in which a plurality of character patterns are stored, a second memory in which second character patterns different from predetermined character patterns among the character patterns stored in the memory are stored, and a display device which can display both the character pattern stored in the memory and the second character pattern stored in the second memory. The second character pattern may be a bold, underlined, superscript, or subscript character pattern. When a desired character is displayed as a bold character, for example, the bold character is formed either by reading out the bold character from the second memory in which the bold character has preliminarily been stored or by changing the desired character to the bold character by a character pattern changing circuit.

Abstract: This system includes a composite memory (5) in which are memorized the data for images to be displayed for each frame. A video display processor (12) controls the screen (8). A central processing unit (1) effects the composition of the image with the memory and an address processor (10), the extraction of the point data to be displayed being effected by a time base circuit (BT) synchronized with the sweeping of the screen, and by a control device (15) for dynamic access which distributes the access times among different units utilizing the memory. The memory (5) includes a first control memory for the memorization of a data word for a line or group of lines making up the image, each word having an address value for addressing a second control memory which contains, at each of these addresses, at least one display attribute data word characterizing the contents of the line(s) corresponding to the value of the respective address of the first control memory.

Abstract: A display control system has a digital interface therein. When software using a color display is executed and displayed in a monochrome monitor, this system is responsive to color code information to arbitrarily select either a hatching pattern conversion or a grey scale display according to application software or the like. The system can thus discriminate the display contents thereof.In a color monitor that permits input of a plurality of digital signals, the display control system can convert a given piece of color code information into digital video signals according to frames and display positions in a given area of a display screen for display of natural colors.

Abstract: A control system for an integrated memory matrix display and its associated process is disclosed. The control system for the matrix display utilizes a first group of n row conductors and a second group of m column conductors which carry appropriate signals for excitation of an electro-optical display material at image points which form the integrated memory of a display. A first selection circuit is connected to n' address rows and to n row conductors where n is .ltoreq.2.sup.n' and m read-write circuits, each connected to a column conductor and combine into k packages wherein each package has a maximum of l read-write circuits with the integers m, l and k being such that l is >1 and <m and k is >1 and <m. Each pth read-write circuit of package is connected to the pth row of a bidirectional data bus 21 with l rows, with the p being an integer such that p.gtoreq.1 and .ltoreq.l.