Abstract: A presentation system uses a computer to store and transmit electronic images to a liquid crystal display (LCD) panel which rests on an overhead projector. The LCD panel includes a calibration circuit designed to correct discrepancies in the saturation levels of the three primary colors. The calibration circuit determines the digital values in a signal corresponding to a test pattern of maximum intensity for all three colors, and compares these values to predetermined theoretical values. The differences between these values are recorded as calibration constants and are used to correct the image signals transmitted from the computer. A remote control unit may be used to provide a stimulus to both the computer (to generate the test pattern) and the LCD panel (to execute the calibration process).

Abstract: A semiconductor device for driving a liquid crystal panel includes an output unit for generating output signals to drive a liquid crystal panel, a terminal for supplying a voltage from a power supply in the outside of the device, a voltage changing unit connected to the terminal for changing the voltage through the terminal into a voltage necessary for a self burn-in test and for supplying the output unit with the changed voltage, and a control unit for controlling the output unit to conduct the self burn-in test when a predetermined control signal is applied thereto from the outside of the device.

Abstract: A car stereo has a detachable grille attached to a body of the car stereo. The grille has a power input terminal connected to a power supply terminal of the body, a data input terminal connected to a data output terminal of the body, a display, and a microcomputer for operating the display to display data in accordance with data signal applied from the body through the data terminals. Disconnection of the data input terminal from the data output terminal under the condition of the connection between the power input terminal and the power output terminal is detected. At the disconnection, the microcomputer stops the operation of the display.

Abstract: A computer color monitor portable testing apparatus includes a programmable microprocessor storing a software program and producing timing and control signals in response to operation of the program to generate selected color patterns on a selected one of different types (CGA, EGA and VGA) of color monitors to be tested, a pair of connectors one of which can be selected for connecting with a selected one of the different types of color monitors to be tested, and a mode selector switch connecting the microprocessor with the connectors and being actuatable for selecting the different operational modes for testing the different types of monitors.

Abstract: An intelligent opto-bus including an optical/electrical connector with a display. An array of photonic components is mounted on a base and coupled to external electrical connections of the base. Electronics are mounted on the base and coupled to the array for sensing the operation of the array and the status of optical signals supplied to optical ports of the array. A display is coupled to the electronics to provide a visual indication of the operation of the array and the status of optical signals supplied to the optical ports of the array. The base is molded with a well and grooves. The electronics and display are positioned in the well and the grooves form optical waveguides that communicate with a fiber ribbon.

Abstract: Method and apparatus for testing human performance by measuring ability to employ job-related skills in an environment requiring skill switching in the presence of a forced attention shift. A human operator is tested by use of a monitor display upon which are presented an alternating sequence of primary tasks requiring utilization of different skills. A keyboard and a joy-stick are disclosed for use in performing the tasks. A danger indicating icon is presented along with the primary task, and the operator is forced to respond to danger indications thereof by operating a switch which is provided for that purpose.

Abstract: The present invention makes it possible for unskilled to inspect the total surface of a liquid crystal panel accurately in short time. It is defined that a liquid crystal panel can be divided into a single part which is a constituent, isolable, and an inspectable area, and that the single part to be "unit area of image" which is defined as a pattern to be inspected. Before the inspection, a unit area of an image without defect is selected from a liquid crystal panel to be inspected. The upper limit reference pattern and the lower limit reference pattern are generated by giving the maximal brightness in a convolution and adding the predetermined brightness and by giving the minimal brightness in the convolution and subtracting the predetermined brightness, respectively, to each pixel of the convolution.

Abstract: Apparatus for setting the color point of a color display device comprises a video signal generator for generating an image on the display device and a color analyzer for measuring the chromaticity of the image to produce digital coordinates corresponding to the color point of the image on a chromaticity reference chart. The apparatus further comprises a computer system connected to the color analyzer. The computer system includes interface means for reading the digital coordinates from the color analyzer, display means for displaying a cursor at a point corresponding to the coordinates within a graphical representation of the reference chart, and processor means for moving the cursor within the graphical representation in response to a change in the coordinates read from the color analyzer. The apparatus advantageously permits rapid adjustment of the color point of a display device to a desired value with a high level of measurement repeatability.

Abstract: Disclosed is a remotely controlled display system in which various forms of messages may be remotely provided to a display, and information regarding the display and/or the message may be provided to the control location. The information provided to the control location may be status information regarding the status of the message or the message medium, which may be, for example, a billboard or other sign, or it may be the verification of the message(s) sent to the remote location for display.

Abstract: A three-dimensional display for characterizing red, green and blue components of a video signal combines the three components to form two pairs of combination signals, one pair combining the green and blue components and the other pair combining the green and red components. The two pairs of combination signals are input alternately to the inputs of a vector display device to provide a symmetrical display about an axis of symmetry where one half characterizes the blue component, the other half characterizes the red component, and both halves characterize the green component. A diamond-shaped graticule is displayed for each half of the symmetrical display to define a color gamut region for the red, green and blue components.

Abstract: A graphical display icon on the front of a data storage unit provides status information on disk drives within the unit. The icon has a shape identical to that of the unit and includes a number of bicolor LED's which each correspond to a similarly situated disk drive located in the unit. The color emitted by the LED's communicate information on the status of the corresponding disk drive within the unit.