Abstract: Methods for matrix addressing a liquid crystal display, utilizing the cholesteric-to-nematic phase change for information display, provides a voltage to each of a plurality of scanned electrodes. A preferred voltage waveform has a first non-zero value during an erase interval and a greater non-zero value during a display-write interval. The combined erase and write intervals occur, for each scanned electrode, once during a multiplex time interval. Each of another plurality of electrodes, arranged adjacent to the remaining surface of a liquid crystal layer and perpendicular to the scanned electrodes, are sequentially energized with a non-zero voltage having a polarity change coincident with the erase and write intervals when that portion of a display at the intersection of the first and second plurality of electrodes is to be addressed.

Abstract: A system for providing sustain, write and erase operations in an AC plasma gas display panel in which selstain circuits are created by integrating the sustain and selection functions. Each selstain circuit is deposited on a single integrate circuit. This circuit is fabricated with low voltage integrated circuit technology. In addition, the sustain signal is floated on the write/erase signal.

Abstract: A video display system is provided for a video game or the like including a computer, a CRT, and mechanism for displaying images on the CRT under control of the computer. An image memory receives image data from the computer for subsequent display on the CRT. A mechanism causes the image data to be written into the image memory in one of two selectable modes, namely, left to right or right to left. Another mechanism causes the image data to be read from the memory for subsequent display on said CRT in one of two modes, namely, top to bottom or bottom to top. A mechanism controls the selection of the writing and reading modes wherein the image displayed on the CRT may be normal or inverted when viewed from a fixed position.

Abstract: A data entry keyboard apparatus comprises a key-switch array (900) and associated electronic logic circuits (941). The key switches (901) of the array are so interconnected with each other and with connection terminals (902) to (905) of the logic circuits (941) that any one of these connection terminals can be interconnected with any other one by the actuation of an appropriate key-switch. The logic circuits (941) have a first set of coincidence gates (912) one for each key-switch (901). One input of each of these gates is connected to receive a particular one of a plurality of pulse signals of different phases produced by a pulse sequencer (906). A second input of each of these gates is connected to receive the same pulse signal via the key-switch array when the appertaining key-switch (901) is actuated. The coincidence or detection at an AND-gate of the same pulse signal at both inputs produces an output signal signifying actuation of the appertaining key-switch. The apparatus has n/2.times.

Abstract: This display system comprises, front to rear, an electro-luminescent information bearing display element which is substantially transparent when not energized, a background element which is dark (opaque) when it is energized and substantially transparent when not energized, and a backup display means which is visible when the two front elements are not energized.

Abstract: A solid state rotary entry control system for controlling appliances such as microwave ovens, dishwashers, washing machines, television sets and other appliances, the control system incorporating a first rotary entry means utilizing the angular displacement of a rotary switch to increment and decrement data, such as desired time, temperature or other data into a microprocessor based appliance control, the control system also incorporating a second rotary entry means for selecting, for example, a desired power level, such as a desired microwave oven magnetron power level, and also providing a power level bar graph display indicative of the power level selected by the user thereof.

Abstract: A gas discharge display apparatus includes a substrate on which a number of electrodes are formed in a row with a distance therebetween and interconnected through polyphase connections. Bipolar pulse voltages are sequentially applied to each phase of the polyphase connections to thereby cause each of the electrodes to operate alternately as an anode and a cathode on a time division basis, whereby discharge produced between the anode and the cathode is caused to perform self-scanning.

Abstract: A display device comprising an insulating carrier (1) and shutters (V) which are capable of rotating under the effect of an electrical field (E) which is perpendicular to the plane of the carrier. The shutters (V) are grouped in pairs and are controlled by applying a voltage between a shutter and a counter-electrode (c). The control may be multiplexed if the shutters of the same pair have different potentials applied thereto.

Abstract: The computer system of this invention has, as the heart of the system, a simple processing unit for providing most data processing by the computer system under control of a read-only memory which contains only instructions and other data for the CPU. The system also includes a random access memory, a keyboard, a video terminal, and a port device in the form of a tape recorder/player. A master clock initiates timing used throughout the system. A multi-line data bus interconnects the CPU and the different memories of the system including the keyboard and the video RAM. Bi-directional communication is possible on the data bus. The addressing of these different memories is by way of an address bus from the CPU, which is a uni-directional bus. Data to be operated upon is basically stored in the random access memory. The keyboard is used for inputting data to the CPU and the video terminal is used for displaying data.

Abstract: A display system is constructed such that upon failure of the primary display which comprises a Liquid Crystal Display (LCD) that becomes transparent upon failure, a backup display located directly beneath the primary display becomes visible to the display user.

Abstract: A method of displaying types of script whose characters are arranged next to one another in rows or underneath one another in columns, by means of a raster-type display device or a vectorially controlled display device which receives its control signals from a character generator which can be controlled so that its output signals to the display device cause the displayed characters to be either upright or rotated by 90.degree. (lying down) horizontally next to one another. With the latter mode of operation, a record carrier taken from a recording device and rotated by 90.degree. (or a video screen rotated by 90.degree.) then shows the printed text in the desired shape in which the characters are arranged underneath one another in columns.

Abstract: An X-Y input device comprises a rotatable ball, a first driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, a second driven roller held in contact with the rotatable ball and rotatable in response to rotation of the rotatable ball, the second driven roller having an axis of rotation extending perpendicularly to that of the first driven roller, first angle detector means for detecting an angle of rotation of the first driven roller, second angle detector means for detecting an angle of rotation of the second driven roller, and a casing housing the rotatable ball, the first and second driven rollers, and the first and second angle detector means. The casing has a lower opening with the rotatable ball partly projecting downwardly therethrough for rolling movement on a base. The casing has at least one annular projection on a lower surface thereof for rejecting foreign matter.

Abstract: A display device having a cell containing a liquid-crystal substance arranged between two opposing electrodes (3, 4, 5, 6). One of the opposing electrodes is subdivided into a plurality of selectively activatable adjacent display electrodes (4, 5, 6) forming bar graphs (9, 10, 11) while the other electrode is arranged opposite the display electrodes (4, 5, 6) as a common electrode (3). In order to permit simultaneous display of two items of information while maintaining a simple construction, one of the electrodes (3, 4, 5, 6) has recesses (8) which form a display pattern.

Abstract: A display device according to the present invention is incorporated into an electrical machine in order to display the operating condition of the electrical machine. The electrical machine has movable parts such as doors to be opened by an operator when the electrical machine stops operating due to a malfunction. This display device schematically shows, by means of display elements, the positions of the movable parts before and after the operator moves them, and displays the elements in accordance with the condition of the electrical machine. Upon the occurrence of a malfunction in the electrical machine, the display elements on the schematic display corresponding to the faulty machine part can be displayed so as to be understood by the operator.

Abstract: A plurality of memory sections is provided each storing binary data to be employed for refreshing picture elements of a thin-film EL matrix display panel on successive frame time periods constituting an integration time period. The number of frame time periods in an integration time period corresponds to the number of different shades to be displayed on the panel. The binary data stored in each of the memory sections differs. Thus, when the binary data in the memory sections are read out on successive frame time periods, some of the picture elements on the panel are refreshed more than others during the integration time period. Accordingly, the eye of the viewer receives more light from some picture elements than others during each integration time period which results in the relative brightness levels and, therefore, the shades of the picture elements to vary.

Abstract: An interface and terminal are provided between data processing operations and the movement of an indicator member of stylus. The interface and terminal identifies the coordinates of the position of the stylus by the angles that a light beam reflected from the stylus makes with a reference and uses a history of coordinate data for specific coordinate selection. The stylus position is sensed by interruption of light. The terminal retains and displays a trace of the stylus movement. The interface and terminal are useful both for manual to computer input, and, for remote data processing to mechanical movement, such as in displays and manufacturing operations. Accuracy of the order of 0.01 inches in 12 inches is achieved.

Abstract: According to the present invention, the driving timing for each segment in a segment type digital display unit can be controlled independently on the basis of either one or both of the lighting history of each segment stored in a memory section and a detected temperature from a temperature detector mounted near segments. Therefore, the discriminatability particularly at low temperatures can be improved with little influence of the temperature and lighting history of segments.

Abstract: The invention is concerned with a liquid crystal display apparatus which displays data by driving a liquid crystal panel in synchronism with horizontal synchronizing signals and vertical synchronizing signals. The driver for driving the liquid crystal panel is provided with timing signals maintaining a predetermined period, and with a voltage in synchronism therewith, irrespective of the horizontal and vertical synchronizing signals. Therefore, even when the horizontal and vertical synchronizing signals have not been applied, the liquid crystal panel is provided with an a-c voltage of which the polarity is alternatingly reversed by the timing signals. Therefore, electrolysis does not take place in the liquid crystal panel, and the quality of display is not degraded.

Abstract: In a video display apparatus which includes a video random access memory storing data of characters and graphics to be displayed on a cathode-ray tube display unit of raster scan type and in which display data corresponding to display positions on the cathode-ray tube display unit are read out from the video random access memory and are then subjected to parallel-serial conversion to provide a video signal applied to the cathode-ray tube display unit, the display data are read out from the video random access memory utilizing the page read function so that an inexpensive dynamic random access memory can be used as the video random access memory.

Abstract: A digital display device which has a delay circuit for operating a segment on-off driver so that when the ambient temperature at the time of renewing display is lower than a predetermined value, an OFF signal is sent to an ON segment and then, after the lapse of a predetermined time, an ON signal is sent to an OFF segment. Consequently, the overlap time between the segment to which an OFF signal was newly transmitted and the segment to which an ON signal was newly transmitted, can be made very short or eliminated whereby the discriminatability is improved to prevent misunderstanding of the display.