Abstract: A 3D display having a closed loop feedback system dynamically adjusting the scanning pattern of laser beams on-line to maintain pointing errors of all scanned images to a specified tolerance. A predetermined alignment pattern, preferably a matrix of dots with known coordinates, is periodically injected into the image data path, preferably during non-display periods. A grid is disposed on each of two mirrors which enter into two separate light paths and are scanned. The mirrors reflect the laser beams from the grid to an optical sensor for each beam, each sensor connected to an A/D converter and producing an output proportional to the intensity of the reflected light. The sensor output is an analog function of the light intensity impinging thereon. The digitized values are stored in a grid buffer which accumulates an entire intensity pattern of grid points.

Abstract: A method and apparatus of adjusting the display of the monitor by modifying the parameter values of the adjustable display functions. When the user begins to press the select key on the control panel, the display of the monitor is altered by recursively varying the parameter value of the selected display function from the maximum to the minimum, for indicating the type of the display function to be selected. Such a dynamic display can be obtained by using the microcontroller of the monitor. The monitor will exhibit the display effect of the display function to be selected. Therefore, the user can realize the display effect of these display functions, without having to memorize the simplified figures associated with these display functions. Then the user can adjust the display of the monitor through depressing the adjust key on the control panel.

Abstract: A data transmission system includes a programmable portable information device, a frame-scanning graphics display device (e.g., a CRT monitor), and a display device controller (e.g., a personal computer). The display device controller supplies pixel data to the frame-scanning graphics display device which causes the display device to depict a particular changing optical pattern. To display the particular pattern, the frame-scanning graphics display device inherently fluctuates in energy output as different pixel intensities require different degrees of power. As a result, the frame-scanning graphics display device effectively emits an RF carrier signal. The programmable portable information device is equipped with an RF receiver that can receive the RF signal from the display device when the programmable portable information device is within a transmission range. The RF carrier signal is modulated to carry programming data to the portable information device.

Abstract: A side pincushion control apparatus for compensating for a horizontal picture size control voltage and a side pincushion in a monitor. The apparatus compensates for the horizontal picture size control voltage and the side pincushion of the picture using a microcomputer, so that the picture is prevented from being unstable during the side pincushion compensation.

Abstract: In a projector, green CRT projection tubes for displaying pictures for the right and left eyes are arranged on the right and left sides with respect to a screen respectively, while a red CRT projection tube for convergence adjustment is arranged at the center. Further, the projector includes polarizing filters which are provided on respective front surfaces of the CRT projection tubes, a triple two-input one-output type selector switch, and a convergence adjusting picture signal source. In general, a right eye picture signal from a right eye picture signal source is supplied to the CRT projection tube through the selector switch, while a left eye picture signal from a left eye picture signal source is supplied to the CRT projection tube through the selector switch. At this time, the observer can visually recognize a stereoscopic monochromatic picture through polarizing glasses.

Abstract: A color image monitoring apparatus is capable of controlling the color correction characteristics by external commands. A color correction information memory stores input masking coefficients and .gamma. correction tables. The input masking coefficients can be loaded in the memory by an external command. In the .gamma. correction tables includes a table for the correction values for the .gamma. values at pitches of 0.1 within a range of 1.0 to .alpha. (>1.0). When a .gamma. correction process is executed, the tables to be used are selected by specifying the .gamma. values by the external command. A color correction circuit performs the respective .gamma. correction and input masking processes using the .gamma. correction tables and input masking coefficients stored in the memory.

Abstract: A video display engineering and optimization CAD simulation system for designing a LCD display integrates models of a display device circuit, electro-optics, surface geometry, and physiological optics to model the system performance of a display. This CAD system permits system performance and design trade-offs to be evaluated without constructing a physical prototype of the device. The systems includes a series of modules which permit analysis of design trade-offs in terms of their visual impact on a viewer looking at a display.

Abstract: In the computer 1, the control information for screen display incorporated in the keyboard and software is processed by CPU2 and sent to the display device 6 via the communication controller 5. The microcomputer 7 in the display device 6 fetches the control information from the communication controller 8 and controls a predetermined part of the video circuit 11 or deflection circuit 10. In this case, identification information is sent to the display device 6 from the computer 1 first and when it matches with the identification information stored in the memory 9, the above control is permitted.

Abstract: A system is provided that allows for the synchronous operation of a memory controller within a computer when the local bus clock has become inactive for a predetermined period of time. The system includes a circuit that senses the presence of the local bus clock and dependent upon whether the local bus clock is active or inactive causes a switching circuit to switch to a second clock signal that is independent of the local bus clock to run the memory controller. In one embodiment, a pixel clock signal is utilized to run the memory controller when the local bus clock signal is not active.

Abstract: An interactive subscriber telephone terminal, comprising: a display screen; a plurality of temporarily definable response/data entry keys; and local control means for selectively causing the display screen and/or the response/data entry keys to be controlled by one of: remote signals transmitted to the terminal from a telephone switching office, and the local control means.

Abstract: An image display apparatus capable of adjusting a display picture by an input unit through a computer body is disclosed. When the user inputs a control instruction for adjusting the display picture of the display unit by the input unit connected to the computer body, a control signal addition circuit prepares a control signal Sc corresponding to the control instruction and adds the control signal to a video signal R, G or B or a synchronizing signal Hs or Vs produced by a display control circuit during a vertical retrace period. A control signal separation circuit separates the added control signal Sc from the video signal R, G or B or the synchronizing signal Hs or Vs produced by the control signal addition circuit. A display control circuit produces adjustment signals Sa and Sb on the basis of the control signal from the control signal separation circuit to adjust a video circuit and a deflection circuit.

Abstract: A communication network, such as an audiovisual system, on an automobile has a master unit and a plurality of slave units which are connected to a common communication bus. The display unit displays operation of the other slave units based on display data transmitted from the other slave units. The display data includes character data regarding a character to be displayed and/or standard bit data common with the slave units. The character data and/or the standard bit data may be positioned at the leading end of the display data.

Abstract: Disclosed is a computer having a display controller for controlling a display where the display provides an image with different selectable gray scale levels. The display controller includes a pattern unit for providing modulation patterns. The modulation patterns include patterns each formed of sequences of different numbers of both 1's and 0's that are not phase related. The display controller additionally includes a modulation unit, operable over the sequential frames, for modulating the data values of pixels with the patterns whereby the intensity level of the pixels over the sequential frames is controlled as a function of the data value of the pixels and as a function of the patterns.

Abstract: A clock control circuit for sequentially enabling the clock input terminal of a number of groups of shift register stages for reducing the power consumption. The groups are seccessively activated, and the groups currently not in operation are made not to consume power. During changeover between adjacent groups of shift register stages, the clocks for the different groups overlap to insure stable operation.

Abstract: A method and apparatus for minimizing the visual degradation of a typeface wherein the need for the manual input of skilled technicians is eliminated and the important visual components of each character and the relationship of the visual components of each character with the other characters of the typeface are preserved. The characters are analyzed to determine the visual components in the horizontal and vertical direction which comprise each character and the priority of adjustment. Using the visual components determined, starting with the highest priority component, the coordinates describing each character are adjusted according to rules which are dependent upon whether the strokes formed are oriented in the horizontal or vertical direction. The adjustment of the lower priority visual components is dependent on the previously aligned components.

Abstract: A flat, visible display device includes a backing plate and electrode, cathode wires extending parallel thereto, a face plate with a phosphorescent screen, an anode electrode, and an address plate with first and second addressing electrodes arranged in a crossing matrix pattern to selectively scan electrons. A first accelerating electrode is installed parallel to the same to form a thermal electron output section. Thermal electrons are accelerated to the electric field of the accelerating electrode to which a positive voltage is applied to form a space charge cloud of free electrons between the address plate and the accelerating electrode. The first and second addressing electrodes are selectively supplied with voltage to pass electrons through the apertures of the address plate to form a picture on the screen. The second addressing electrode is supplied with positive voltage, and backing and cut-off electrodes are supplied with a negative voltage to form a preliminary space charge cloud of free electrons.

Abstract: The liquid crystal is written with a laser beam. The laser beam generated by a laser source is applied through an optical control unit such as galvanometer mirrors to the liquid crystal. To erase a part of the data written in the previous time completely, the liquid crystal is irradiated with the laser beam slightly wider than the portion that was thermally written on the liquid crystal in the previous time.

Abstract: In a non-interlace display device, addition is performed in the level ratio of 1/4 and 3/4 at one field and in the level ratio of 3/4 and 1/4 at one field, and the display elements common in one field and other field are driven using the addition signal, thereby a good display image can be obtained without trouble due to flicker or pairing.

Abstract: An electronic billboard sign is provided in which electro-micro circuitry programming is utilized to display advertising information onto a large front billboard screen by a large moveable lens.

Abstract: A display control device for receiving input data at a display controller-kernel unit, storing it in a memory, sequentially reading the stored data from the memory and displaying it on a display unit. The control device comprises a counter which is reset when a signal indicating writing of data in the memory is detected to output a counter signal when a predetermined value is counted, a display control circuit for outputting a control signal so as to close a gate inserted in a signal line between the display controller-kernel unit and the display unit in response to the counter signal to interrupt the signal line and turn off the backlight of the display unit, and means for invalidating the control signal when the fact that a signal is written in the memory is detected.

Abstract: An information handling apparatus for transferring and composing image signals for display. The apparatus includes a bus adapted to allow selective access for multiple independent image signals generated by respective independent image sources. The selective access enables composition of the independent image signals in response to control information; the composition enables real time display of a composed image signal.

Abstract: A signal quality detector circuit which detects an error signal of an input signal, used for detecting transmission quality of a transmission line. The detector circuit equalizes the input baseband signal, analog-to-digital-converts the equalized signal to a digital bit signal, analog-to-digital converts the input baseband signal to a digital bit signal, compares the two analog-to-digital converted signals on a bit-by-bit basis and detects an error signal accumulates the error signal in a unit time, and detects transmission quality of a transmission line.