Abstract: A bus-controlled television having function control units interconnected via a data line is provided and includes a remote controller, a microcomputer, and a memory. The remote controller generates mode control signals which respectively correspond to operational modes of the television and which are used to test various functions of the television. The controller selectively outputs one of the mode control signals as a selected mode control signal based on commands input to the controller by a user. The microcomputer inputs the selected mode control signal and designates one of the modes as a selected operational mode. Furthermore, the microcomputer outputs mode data corresponding to the selected operational mode via the data line to instruct one of the function control units to operate according to the selected mode. The memory stores values of the mode data for the selected operational mode.

Abstract: A device is provided for measuring eccentricities of electron beams of a color cathode ray tube. The device detects, in a magnetically neutral environment, by use of a luminance pattern formed on the screen of the tube, eccentricities of electron beams, ascribable to electron gun electrode port production and assembly errors. The device has rapid measuring capabilities and may be used on a production line.

Abstract: A interpolation engine is disclosed that is capable of generating correction signals for segments of a monitor that form a gradient that eliminates any visual discontinuities between segments on the screen. In one embodiment, a starting count number for a distortion signal is stored in RAM, together with an increment rate signal that indicates the rate of change of the correction signal down the segment. In another embodiment, the increment rate signal is automatically calculated by the device by taking the difference between the starting count numbers for vertically adjacent segments. Since the number of rows in each segment is known and the difference between the starting count numbers of vertically adjacent segments is determined, the amount of correction for each row within a segment is calculated and provided as a correction signal. Hence, a correction signal can be provided for each row of pixels on a screen.

Abstract: A signal hybrid device has a first dual gate FET 7 having input control terminals for receiving and hybridizing a video signal transmitted through an input terminal 19 and a blank signal from an OSD 5 through one of the input control terminals, a second dual gate FET 8 having input control terminals for receiving and hybridizing a DC control voltage from a voltage power source and a video signal from the OSD 5 through one of the input control terminals, and a CRT driver 4 for supplying the hybrid video signal generated by the first and second dual gate FETs 7 and 8.

Abstract: An automated apparatus for producing and testing a bus-controlled television includes a camera, a bus control facility, an automatic connector, and a remote controller. The camera photographs a predetermined area near the automated apparatus and outputs an approach detection signal indicating if the television is located in such area. Also, the camera photographs the screen of the television when it is in the predetermined area and outputs a screen state signal which represents the information displayed on the screen. The bus control facility generates a television test signal based on the approach detection signal and transmits remote control signals to the television to select control items for testing various functions of the television. The automatic connector connects the television and the bus control facility when the television is located in the predetermined area to enable the bus control facility to transmit the television test signal to the television.

Abstract: A test pattern display apparatus and method thereof for adjusting the display parameters of a television picture, font data in the form of a test pattern stored in a font memory. The test pattern can be internally generated and displayed as needed, by a key input. The microcomputer repeatedly reads the font data of the selected test pattern, to form an entire test pattern, whenever accurate picture adjustments is desired.

Abstract: A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made. Correction factors for correcting errors due to refraction can also be generated empirically in accordance with the present invention. Slope coordinate data is generated for a sample monitor for predetermined slope coordinate locations on the tube face.

Abstract: An apparatus for inputting data into a digital-to-analog converter (DAC) in an automatic alignment monitor test system. The digital-to-analog converter is built into a microcontroller of the automatic alignment monitor test system. The apparatus is provided to input data into the DAC provided by an auto-alignment adapter of the automatic alignment monitor test system. A serial-to-parallel interface receives a data access request issued by the auto-alignment adapter. The serial-to-parallel interface converts a multiple of data bits sequentially into a parallel form of data for conversion by the digital-to-analog converter into analog signal. The serial-to-parallel interface has a logic decoder for selecting one of a number of digital-to-analog converter outputs for outputting the converted analog signal to the monitor under test.

Abstract: Disclosed is a stereoscopic optical inspection system. A computer uses the stereoscopic information to compute and correct for angular and distance misalignments between the unit-under-test and the inspection system. A feature of the optical system is the use of multiple high-resolution inspection cameras, in conjunction with a single stereoscopic reference camera. One example of a preferred embodiment is presented as an electro-optical inspection system for inspection and/or alignment of cathode-ray-tube displays and other video displays on a production assembly line.

Abstract: A novel method for locating eye point features on patterns or objects whose size varies between the reference object and the find object includes generating a set of reference vectors that define the location of the reference eye point. The set of vectors is modified and separated equidistant from each other. A centroid of the object area is calculated. When a fixed object is to be located, an area of certainty is established which contains a plurality of candidate eye points one of which is the proper find eye point of the object to be located. Sets of find vectors are generated for each candidate eye point which are compared with the set vectors for the reference eye point. Centroids of the find objects having the best comparison are calculated and compared with the centroid of the reference object. The candidate eye point having a best vector correlation match and the best centroid comparison is selected as the eye point of the find object.

Abstract: An automatic video display testing and adjusting system mounted to a CRT video display of a monitor or a TV set is made up a transparent mask, a main circuit board, a computer system which is connected to the main circuit board by a cable, a plurality of adjustable detecting sensor mounting members each having a detecting sensor engaged therewith. The detecting sensors are electrically connected to the main circuit board by wires so that the detected results are able to be fed back to the computer system for analysis and comparison by way of a main computer program. The main circuit board uses interfaces to permit the computer system to communicate with and have control over a tested monitor whereby the main computer program can perform all analytic comparison with set standards and make adjustment automatically on functional discrepancies of the display of a monitor or a TV set.

Abstract: A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected for, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made.

Abstract: A circuit within a video monitor for making corrections during horizontal scan includes a data storage device containing information relating to a selected display parameter, an integrator receptive of the stored information and adapted to produce an integrated signal therefrom, and an amplifier receptive of the integrated signal for supplying signals to the video monitor based on the integrated signal. The information supplied from the data storage device to the integrator is encoded in a pulse density modulated wave form via a tri-state gate and a one-shot timer. The information stored in the data storage device is stored in bytes, each byte containing a "sign bit" and a plurality of data bits.

Abstract: A convergence output circuit for converging signals corresponding to the primary colors of an input video signal which reduces power loss by including a positive power source voltage supply circuit for supplying a first voltage to a first current supply circuit during a blanking period of the input video signal and for supplying a second voltage, lower than the first voltage, to the first current supply circuit during a scanning period of the video signal, both the first and second voltages being positive. A negative power source voltage supply circuit supplies a third voltage, opposite in polarity to the first voltage, to the second current supply circuit during the blanking period and supplies a fourth voltage, opposite in polarity to the second voltage, to the second current supply circuit during the scanning period, both the third and fourth voltages being negative.

Abstract: In an electronic camera that can be utilized with a color filter wheel accessory for obtaining a color image composed of a sequence of red, green, and blue records, slight movement of the camera body can produce misregistration in the color records. Such misregistration can be determined by dividing the color image into a plurality of subsections, and selecting the particular subsection that meets a predetermined criterion for color neutrality, and that contains monochrome edge information suitable for correlation. The color records are brought into registration by processing the edge information of the selected subsection to determine the misregistration between the color records, and by shifting the misregistered records first by integer, and then by fractional pixel shift values.

Abstract: A convergence measurement apparatus for a color cathode-ray tube is capable of high precision convergence measurement by elimination of luminance omission portions occurring in the screen. A dot pattern displayed on a color cathode-ray tube is picked up by an image pickup camera and is stored in an image memory. A signal movement amount control unit is arranged to move a beam spot of the dot pattern displayed on the cathode-ray tube by a predetermined pitch in a horizontal or vertical direction. Corresponding dot pattern shifting occurs to sequentially record images of discrete colors for a more accurate measure of convergence. For example, if a gap between adjacent phosphor elements of one color (for example red) is defined as one pitch, three sequential red dot patterns can be each shifted by 1/3 of a pitch and thereafter picked up and stored in the image memory of dot pattern data.

Abstract: Liquid crystal display panels are mounted to a beam combining prism such that each display panel can flex in the place of the display panel as a result of thermal stresses. Mirrors having a cover glass plate substantially equivalent to the cover glass on the display panels are used to establish the image planes. A three-point clip mount for each display panel is then positioned based on the respective image plane. The mirrors are then replaced with the actual display panels and the optical system is then finely adjusted. After the fine adjustments, the mounting clips are bonded to the display panels.

Abstract: An automatic adjustment circuit for an analog control unit comprising a detection circuit and a D/A control circuit, said detection circuit being connected to said analog control unit to detect gain errors in said analog control unit and to input a determination signal for the determination of the errors detected to a control microcomputer installed in the apparatus and said D/A control circuit is operated in response to receiving signal from said control microcomputer to accomplish the adjustment.

Abstract: A checkered characteristic pattern is picked up by an image input device to form pick-up data. Characterizing points (intersecting points) are detected from the pick-up data. From the arrangement of the characterizing points about the center of the pattern and the positions of the characterizing points on the picture plane, a mapping function obtained when a TV camera is assumed to be a pin-hole camera is prepared. Reference positions of the characterizing points through the entire picture plane are calculated from the mapping function. The reference positions are compared with the actual positions on the picture plane to calculate a correcting function which in turn is stored in a correcting function preparing device. Normally, the inputted image is corrected by the correcting function and then outputted to an image output device.

Abstract: A method and a system for testing a cathode ray tube (CRT) or like products such as a cathode ray tube monitor, using at least two electronic cameras which offer a stereo vision to read a locating pattern produced on the screen of a tested CRT, thereby a preparatory positioning process of the CRT relative to the electronic cameras is not necessary.

Abstract: A CRT measurement device includes an image pickup device for producing an electrical image signal with respect to a light image displayed on the CRT, an optical system having a movable focusing lens for providing a light image of varied sharpness to the image pickup means in accordance with position of the focusing lens, a sharpness detector for detecting the sharpness of a picked up image based on an electrical image signal each time the focusing lens is moved, a focal position detector for detecting a focal position of the focusing lens providing a most sharpness light image, a driver for driving the focusing lens so as to move to the detected focal position, and calculator means for calculating a characteristic of the color CRT based on the image signal produced when the focusing lens is at the focal position. This device assures automatic and accurate focusing.

Abstract: The present invention is a system that uses a single channel light meter to measure the actual red, green and blue light output response curves of a CRT monitor to the range of possible input monitor code values for each color. A computer is used to transform a desired corresponding tone scale through the corresponding response curve to obtain a look-up table or video shaper that calibrates the monitor to the desired corresponding tone scale. The transformation includes obtaining a tone scale intensity value for each possible input value and searching the actual response values for a closest match. The input monitor code value used to obtain the actual response matching intensity for the possible input value is the calibrated value displayed by the monitor when an image includes the possible input value. The system is used throughout the life of the monitor to bring the monitor back to calibration as it changes.

Abstract: A television receiver includes a mode setting device for selectively setting either a factory check mode of operation or a normal mode of operation. Speeds of variation of adjustment sections of the television receivers are set at predetermined high speeds in the factory check mode, and are set at predetermined normal speeds in the normal mode. The television receiver also includes an input device for inputting a control signal, and a control device for controlling the mode setting device in response to the control signal.