JPH02233085A - Color display convergence adjustment instruction device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a convergence adjustment instruction device for a color display, and in particular, the present invention relates to a convergence adjustment instruction device for a color display.
This invention relates to a convergence adjustment instruction device for a color display suitable for adjusting the amount of misconvergence. [Prior Art] In a color CRT display, if the convergence adjustment ring provided on the deflection yoke is misaligned,
When displaying an image on a color CRT screen, color shift occurs. R. The bright lines of G and B do not match and the color is not white. For this reason, conventionally, an operator visually observes the convergence measurement pattern displayed on the screen of a color CRT using a magnifying glass, and uses the measurement pattern to determine the amount of horizontal line vertical deviation, the vertical line lateral deviation between R-B, and R-B. B-G Knee) uN TeiIl
When each amount of deviation is outside the range of adjustment specifications, the convergence adjustment link is rotated to bring each amount of deviation within the range of adjustment specifications. However, visual inspection of the amount of deviation requires skill, which causes problems such as variations depending on the operator and troublesome adjustment work.

For this reason, as described in JP-A-60-125095 and JP-A-60-170395, the screen of the color CRT to be measured is imaged using a color television camera, and the image from the color television camera is A system in which the video signal is displayed on a color monitor has been proposed.

[Problem to be solved by the invention]

However, in the above-mentioned conventional technology, no consideration is given to instructing the amount of color misregistration to be in a state suitable for adjustment, and there is a problem in that it is not possible to instruct the operator on an appropriate adjustment method.

An object of the present invention is to provide a convergence adjustment instruction device for a color display that can instruct adjustment of the amount of color shift.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a pattern generating means for outputting a video signal of a convergence measurement pattern to a color display to be measured, and a plurality of patterns for convergence measurement displayed on the screen of the color display to be measured. a plurality of color cameras that take images divided into areas, a color shift amount calculation means that sequentially displays video signals from each color camera and calculates the amount of color shift between the three primary colors, and a color shift amount calculation means. The present invention constitutes a color display convergence adjustment instructing device having a display means for displaying an image of the calculation result together with the pass/fail determination value.

The second device includes a pattern generating means for outputting a video signal of the convergence measurement pattern to the color display to be measured, and a pattern generation unit that images the convergence measurement pattern displayed on the screen of the color display to be measured divided into multiple areas. a plurality of color cameras, a color shift amount calculation means that sequentially processes image signals from each color camera to calculate the amount of color shift between the three primary colors, and each calculated value of the color shift amount calculation means and a pass/fail judgment value. and a display means for displaying images of each calculation result of the color shift calculation means and the judgment result of the judgment means, respectively. This configuration constitutes a convergence adjustment instructing device.

The third device includes a pattern generation means for outputting a video signal of the convergence measurement pattern to the color display to be measured, and a pattern generating means to image the convergence measurement pattern displayed on the screen of the color display to be measured, dividing it into multiple areas. a plurality of color cameras, a color shift amount calculation means for sequentially image-processing video signals from each color camera to calculate the amount of color shift between the three primary colors, and each calculated value of the color shift amount calculation means and a pass/fail judgment value. and determining means for determining whether each calculated value is within the acceptable range by comparing the values, and determining the amount of color misalignment of a specific color camera as an index value for setting the amount of color misalignment of the entire color camera within the acceptable range. an optimum adjustment value calculation means for calculating an optimum adjustment value for the color shift amount from the color shift amount calculation value; and a display means for displaying images of each calculated value of the color shift amount calculation means and the optimum adjustment value calculation means and the determination result of the determination means. This consists of a convergence adjustment instruction device for a color display. as a fourth device including the first, second or third device;
The display image of the display means constitutes a convergence adjustment instructing device for a color display in which the color varies depending on the display content.

As a fifth device including the first, second, third, or fourth device, the display means constitutes a convergence adjustment instruction device for a color display that displays the amount of color shift in a graphic image.

[Effect]

Since the amount of color shift between the three primary colors is displayed as an image together with the pass/fail determination value, the convergence adjustment ring can be adjusted so that the amount of shift of each color is within the acceptable range, making it possible to easily perform adjustment work.

In addition, since the optimal adjustment amount for the color shift amount of a specific color camera is displayed as an image, only the optimal adjustment value can be displayed in a short time even when there are many measurement points, minimizing the response time during adjustment. be able to.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, a color display to be measured (color CRT) 10 is placed on a stand plate 14 of a product conveyance line 12, and can be moved on the conveyance line 12 as the base plate 14 moves. ing. Near the deflection yoke of the color display 10 are a 4-pole convergence adjustment ring (hereinafter referred to as 4P ring) 16 and a 6-pole convergence adjustment ring (hereinafter referred to as 6P ring) 1.
8 are rotatably mounted in pairs. By rotating the pair of 4P rings 16, the amount of color misregistration between R-B changes, and when the 6P ring 18 is rotated, the amount of color misregistration between R-B-G changes. The color display 10 also includes a connector 20 and a signal connection device 22.
Pattern generator (pattern generation means) 2 via
4, the video signal of the pattern for convergence measurement is input. Using this video signal, a grid-like convergence measurement pattern is displayed as an image on the screen of the color display 1o, as shown in FIG.

In front of the display screen of the color display 10, as shown in FIG.
0, 32, 34, 36, 38, 40, 42, 44, 46
, 48, 50 is provided.

The robot 52 is movable in three-dimensional directions along the X, Y, and Z axes according to commands from the robot controller 54. Furthermore, the focal position of each of the color cameras 26 to 50 is automatically adjusted by driving a pulse motor. Further, as shown in FIG. 4, the robot 52 is provided with an ultrasonic sensor 56, and each color camera 26 is
~ Distance L between 50 and the display screen of color display 10
is configured so that is the camera depth of focus. Each of the color cameras 26 to 50 is connected to an image recognition device 62 via a camera controller 58 and a camera switch 60, the ultrasonic sensor 56 is connected to the image recognition device 62 via a signal processor 64, and the robot 52 is It is connected to an image recognition device 62 via a robot controller 54. Further, the camera switch 60 is connected to a real image monitor 66. The image recognition device 62 is connected to an adjustment instruction monitor 68 as a display means, a host computer 70 for centrally managing adjustment information, and also connected to a sequence controller 72 and a pattern generator 24. Further, information regarding the color display 10, such as the curvature of the color display 10 and the screen size, is input to the image recognition device 62 from a portable input device 74. Furthermore, the color display 10 is connected to the image recognition device 62 from the host computer 7o.
Information regarding adjustment specifications and control information are input. Based on the various information, control signals are output to the sequence controller 72, robot controller 54, and camera controller 58, and each color camera 2
A color shift amount calculation means that processes the video signals from 6 to 50 to calculate the amount of color shift between the three primary colors, and compares the calculated value of the color shift amount with the pass/fail judgment value, and each calculated value is within the pass range. and an optimum rA integral value for the color shift amount of a specific color camera, for example, the central color camera 38, as an index value for keeping the color shift amount of the entire camera within the acceptable range. The optimum adjustment value calculating means is configured to calculate the following from the amount of color shift. Further, images from each of the color cameras 26 to 50 are sequentially displayed on the screen of the actual image monitor 66 in response to a switching command from the camera switching station 60. As shown in FIG. 2, the color cameras 26 to 50 are arranged to take images of the display area of the color display 10 divided into 13 areas, and the video signals obtained by imaging each area 26A to 50A are sent to the cameras. The image is supplied to the image recognition device 62 via the controller 58 and camera switch 6o.

In the above configuration, when the color display 10 is transported in front of the color cameras 26 to 50 of the robot 52, when a measurement command is input to the image recognition device 62 according to a command from the input device 74, the pattern generator 2
The measurement pattern from 4 is displayed as an image on the screen of the color display 10, and the robot 52 is driven based on the output signal of the ultrasonic sensor 16, and the distance between the color display 10 and each of the color cameras 26 to 50 is optimized. adjusted to distance. Thereafter, when the video signals from each of the cameras 26 to 5o are transferred to the image recognition device 62, window settings are performed, and window setting processing for image processing the video signals from each color camera is performed in order. for example,
As shown in FIG. 5, for the factory 38A of the color display 10, the window 76 is set based on the video signal from the color camera 58. Among the windows 76, the window 78 is processed as image data of the horizontal line deviation amount, and the image data of the window 8o is processed as the data of the horizontal line vertical deviation amount. These image data are each binarized and converted into R. G. It is sequentially processed as image data for each B. These image data are processed together with luminance data,
Coordinate values of 480x520 are assigned to each color dot. The color center of gravity is determined from these coordinate values and brightness values by weighted average processing.

For example, the image data for R in window 78 is
This is shown in Figure 6. If such data is obtained, the color center of gravity X in the X coordinate can be found from the coordinate value of each dot x brightness/total amount of brightness of each dot.

That is, the color center of gravity is also determined for the image data of the window 80, and based on the color center of gravity of the X coordinate, the vertical line horizontal shift amount of R-B and the R-
The amount of lateral deviation of the B-GR line is calculated. Also, the R-H horizontal line vertical shift amount and the R-B-G horizontal line vertical shift amount are determined from the Y-coordinate color gravity center. When calculating each deviation amount, R-H
The horizontal line vertical deviation amount and the vertical line lateral deviation amount are calculated, and these calculation results are displayed on the screen of the monitor 68 as graphic images divided into left and right. That is, on the left side of the monitor 68, the horizontal line vertical shift amount of B with R as a reference is displayed as a graphic image, and on the right side, the vertical line horizontal shift amount of B with R as a reference is displayed as a graphic image. In this image, for example, as shown in FIG. 7, the amount of deviation due to imaging by each camera 26 to 50 is displayed in blue in the form of a bar graph, the optimum adjustment value 82 is displayed in yellow, and the pass/fail judgment value is displayed as a numerical value ± 0.3m
m, indicated by mark 84. The mark 84 is displayed together with lines 86 and 88 indicating the acceptable range, and the mark 84 is displayed as a red image when the amount of deviation from each color camera is not within the acceptable range.

When the operator adjusts the 4P ring 16 by looking at the image shown in FIG. 7, the amount of deviation according to the adjustment is displayed again in the image. When each deviation amount falls within the acceptable range through this adjustment, the mark 84 changes from red to green, as shown in Figure 8, and the upper part of the screen indicates that the deviation amount is within the acceptable range. The mark 90 shown is displayed as an image.

As a result, the deviation amount between R and B becomes the acceptable range, and then R
- The amount of deviation between B and G is displayed as an image. That is, the amount of deviation of R-B with respect to G is displayed as an image of an R-B-G horizontal line vertical deviation amount and an R-B-G vertical line lateral deviation amount, respectively.

In this case as well, the amount of deviation is displayed as an image using the same process as described above. By turning the 6P ring 18, R
- The horizontal line vertical shift amount and the vertical line horizontal shift amount of BG can be adjusted.

Furthermore, if the optimal adjustment value 82 is displayed as an image on the screen of the monitor 68, giving priority to displaying the deviation amounts from all color cameras, the response time during adjustment can be increased.

In other words, when displaying the measured values from each color camera in order, the response time of the entire camera is the sampling time per point x the measurement point, so the deviation amounts of all cameras are displayed in order. It would take a lot of time to do so. Therefore, as an index value for keeping the color misregistration amount of the entire color camera within the acceptable range, the optimum adjustment value for the color misregistration amount of a specific camera, for example, the color camera 38, is determined based on the maximum and minimum values of the color misregistration amount. In this case, the optimal adjustment value can be determined by the following equation just by displaying the optimal adjustment value 82 as an image. Optimum adjustment value=Actual measurement value of the color camera 38+An example of calculating this optimal adjustment value is shown in FIG. [Effects of the Invention] As explained above, according to the present invention, since the amount of color misregistration between the three primary colors is displayed as an image together with the pass/fail judgment value, it is possible to accurately indicate the amount of color misregistration mu, which improves work efficiency. This can contribute to the improvement of Furthermore, since an image is displayed to show whether the amount of color misregistration is within the acceptable range, it is possible to confirm whether the color misregistration adjustment is within the adjustment specifications. Furthermore, if the optimal adjustment value is displayed as an image and the amount of color shift is adjusted in accordance with this optimal adjustment value, the response speed can be increased and the work speed can be improved. Further, since the display image is displayed in a different color depending on the display content, the work can be executed accurately.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the configuration of a color display, and Fig. 3 is a diagram showing the configuration of a color display.
2 is an explanatory diagram of the configuration of the ultrasonic sensor, and FIG. 4 is an explanatory diagram of the configuration of the ultrasonic sensor.
Fig. 5 is a diagram for explaining the processing contents of the present invention, Fig. 6 is a diagram for explaining the color gravity center calculation method, Fig. 7 is a diagram showing an example of image display before adjustment, and Fig. 8 is a diagram for explaining the color gravity center calculation method. FIG. 9 is a diagram showing an example of image display after adjustment, and is a diagram for explaining the method of calculating the optimal adjustment value. 10...Color display, 16...4P ring, 18...6P ring, 24...
...Pattern Jonerator, 2 6, 2 8, 3 0, 3 2, 3 4, 3 6, 3
8, 4 0, 42, 44, 46, 48, 50... Color camera, 52... Robot, 54... Robot controller, 56... Ultrasonic sensor, 62... Image recognition device, 68 ...Adjustment instruction monitor, 74...Input device. Agent Tatsu Unuma Figure (A) +B) Figure Figure Figure Figure Figure IO? ■ Figure Figure Figure

Claims (1)

[Claims] 1. Pattern generation means for outputting a video signal of a convergence measurement pattern to a color display to be measured;
Multiple color cameras divide the convergence measurement pattern displayed on the screen of the color display to be measured into multiple areas and image them, and the video signals from each color camera are sequentially displayed as images to measure the amount of color shift between the three primary colors. A convergence adjustment instructing device for a color display, which includes a color shift amount calculation means for calculating each color shift amount, and a display means for displaying each calculation result of the color shift amount calculation means as an image together with a pass/fail determination value. 2. pattern generation means for outputting a video signal of a convergence measurement pattern to a color display to be measured;
Multiple color cameras divide the convergence measurement pattern displayed on the screen of the color display to be measured into multiple areas and image them, and image signals from each color camera are sequentially processed to determine the amount of color shift between the three primary colors. A color shift amount calculation means that calculates each color shift amount, a judgment means that compares each calculated value of the color shift amount calculation means with a pass/fail judgment value and determines whether each calculated value is within an acceptable range, and a color shift calculation means. A color display convergence adjustment instructing device having a display means for displaying images of each calculation result of the means and the determination result of the determination means. 3. pattern generation means for outputting a video signal of a convergence measurement pattern to a color display to be measured;
Multiple color cameras are used to image the convergence measurement pattern displayed on the screen of the color display to be measured, divided into multiple areas, and the video signals from each color camera are sequentially image-processed to determine the amount of color shift between the three primary colors. A color shift amount calculation means for calculating each color shift amount, a judgment means for comparing each calculated value of the color shift amount calculation means with a pass/fail judgment value to determine whether each calculated value is within a pass/fail range, and the entire color camera. Optimum adjustment value calculation means for calculating an optimal adjustment value for the color misregistration amount of a specific color camera from the color misregistration amount calculation value as an index value for making the color misregistration amount within the acceptable range; A color display convergence adjustment instructing device comprising display means for displaying images of each calculated value of the value calculation means and the determination result of the determination means. 4. The convergence adjustment instruction device for a color display according to claim 1, 2 or 3, wherein the display image of the display means has a different color for each display content. 5. The convergence adjustment instruction device for a color display according to claim 1, 2, 3 or 4, wherein the display means displays the amount of color shift as a graphic image.