KR950012832B1 - The method and device of adjusting color purity and static convergence of color television picture tube - Google Patents

Abstract

an image processing unit for performing purity and static convergence measuring function; a mechanical unit for supporting a plurality of monochromatic light sensors and a camera; a zig unit for supporting a color brown tube as a measuring object and mounting a driving unit of the color brown tube; and a conveyor for delivering the zig unit.

Description

Apparatus and method for adjusting color purity and static convergence of color CRT

1 is an overall schematic diagram of the apparatus for adjusting color purity and static convergence of the present invention CRT.

2 is a detailed block diagram of an image processing unit in FIG. 1;

3 is a detailed block diagram of the mechanical unit in FIG.

4 is an external configuration diagram of an image processing unit.

5 is a signal flow diagram of the present invention.

* Explanation of symbols for main parts of the drawings

100: image processing unit 111: first color analysis unit

112: second color analysis unit 113: secondary monitor

l14: frame memory 115: interface board

116: interface unit 117: monitor for indication

118: Computer 1l9: Pattern Generator

120: keyboard 121: printer

200: mechanical unit 211-217: sensor

218: element coil 220: color camera

221 frame 231 cylinder

233, 234: induction motor 235: device unit

236 control unit 300 jig unit

311: Color Brown Tube 400: Conveyor

The present invention relates to the purity and static convergence of the purity purity item of the color CRT. An apparatus and method for adjusting color purity and static convergence of a color CRT that can be adjusted while viewing an adjustment screen.

In general, the electron beam should be located at the center of deflection of the magnetic field generated by the deflection yoke when manufacturing the color CRT, and the center of the screen should be white in the cross hatch pattern.

However, in the case of manufacturing a color CRT, if a mismatch occurs due to various factors, an adjustment step must be performed to match the misalignment. After the CRT has been grounded on the C.JIG, the CRT has undergone the Heater Heat-Run step. And the deflection yoke is adjusted by moving. At this time, a batch method is mainly used.

However, in such a conventional adjustment system, since the CRT screen is adjusted directly with the eyes, the purity and convergence state are adjusted, and not only adjustment is difficult but also the quality is uneven, and the adjustment time is long, resulting in a decrease in productivity. There was a problem.

In order to solve the conventional coupling, the present invention has been made to adjust the purity and static convergence of the color CRT while viewing the adjustment screen of the indicating monitor, which will be described in detail with reference to the accompanying drawings.

1 is an overall schematic diagram of the color purity and static convergence adjusting device of the color CRT according to the present invention, as shown in FIG. -217) and the jig unit 300 for supporting the mechanical unit 200 for supporting the camera 220 and the color CRT 311 to be measured, and for mounting the drive unit of the color CRT 311. And, it was composed of a conveyor unit 400 for transporting the jig unit 300.

FIG. 2 is a detailed block diagram of the image processing unit 100 in FIG. 1, and as shown therein, the first and second color analyzers 111 for calculating the emission amount of red, green, and blue monochromatic light (R, G, B). ), 112 and the auxiliary monitor 113 for displaying the window pattern and the search line for positioning of the camera 220, and the amount of light emission calculated by the first and second color analyzers 111 and 112 The interface board 115 which transmits the relevant data, the instruction monitor 117 which displays an adjustment screen, and the peripheral device are collectively controlled, and the data measured with respect to the color CRT 311 is compared with the measurement reference data. And a pattern generator 119 for outputting a monochromatic raster signal to the color CRT screen 311 and a computer 118 for outputting an adjustment screen to the monitor 117 for indication. Is the interface unit, “120” is the keyboard, and “12r is the printer.

FIG. 3 is a detailed block diagram of the mechanical unit 200 in FIG. 1, as shown therein, the sensors 211 to 217 moved forward and backward by the cylinder 231, and a measurement camera for measuring the convergence. The shadow mask or collar of the induction motors 233 and 234 and the color CRT 311 for moving the sensor 220 and the support frame 221 up, down, left, or right. The device unit 235 for removing the magnetism of the iron to fix the CRT 311, and the control unit 236 for overall control of the entire system, comprising the non-inventive action and effect of the present invention configured as described above And it will be described in detail with reference to Figure 5 as follows.

When the jig unit 300 enters the measurement position within the composition period and the jig unit 300 is raised by the cylinder 232, and the preparation for measurement is completed, the color is transferred through the element coil 218 and the element unit 235. As the CRT 311 is demagnetized, the control unit 236 of the mechanical unit 200 advances the sensor cylinder 231 to the CRT side in order to closely adhere the sensors 211-217 to the color CRT surface 311. .

When the device operation is terminated in the above, the pattern generator 119 outputs a monochromatic raster signal on the color CRT screen 311 according to the instruction of the industrial computer 118, and the sensor 211 is connected to the color CRT 311. The luminous energy of the raster output is converted into an analog signal and transmitted to the first color analyzer 111.

Accordingly, the first color analyzer 111 calculates the amount of light emitted from each of the red, green, and blue monochromatic lights R, G, and B, and then transmits the calculated data to the computer 118 through the interface board 115. The computer 118 compares the measurement data with the measurement reference data and displays the sensor purity adjustment screen on the indicating monitor 117.

At this time, the adjustment operator adjusts the center purity while watching the adjustment screen of the instruction monitor 117, and when the adjustment operation of the center purity is terminated, the pattern generator 119 according to the instruction of the computer 118 is the color CRT tube. R, G, B window pattern signals are output on the screen, and the R, G, B window patterns are displayed on the color CRT 311.

In this state, the light emission energy of each of R, G, and B is measured using the color camera 220, and the light emission energy is converted into a video signal and stored in the frame memory 114, and then designated in the frame memory 114. The centers in the vertical and horizontal directions are calculated for each of the monochrome rasters only with the data in the search area, and the resultant data is transferred to the computer 118 side.

The computer 118 calculates a relative amount of each of R, G, and B on the basis of the transmitted data, and then displays the static convergence adjustment screen on the indicating monitor 117 by comparing them with the measurement reference data. The adjuster adjusts the static convergence while watching the indicating monitor 117.

Meanwhile, the video signal measured by the color camera 220 is displayed as it is on the secondary monitor 113 through the frame memory 114.

When the static convergence adjustment is finished through the above process, the pattern generator 119 outputs a monochromatic raster signal on the color CRT screen 311 according to the instruction of the computer 118.

Thereafter, the computer 118 receives data on the amount of light emitted by the monochromatic light R, G, and B through the path, that is, the sensor 211 → the first color analyzer 111 → the interface board 115. After comparing the measurement reference data, the resulting corner purity (Coner Purity) adjustment screen is displayed on the instruction monitor 117. At this time, the operator adjusts the corner while viewing the adjustment screen of the instruction monitor 117. The purity is adjusted.

When the corner purity adjustment is completed, the sensors 211-217 are reversed from the color CRT 311, the cylinder 232 is lowered, and the jig part 300 is moved by the conveyor 400. The cycle's work is decommissioned.

As described in detail above, the present invention has the effect of being able to adjust uniformly without burdening the operator by adjusting the purity and static convergence of the color CRT while viewing the adjustment screen of the indication monitor.

Claims (5)

And an image processing unit l00 for performing purity and static convergence measurement functions, a mechanical unit unit 200 for supporting the monochromatic light sensors 211-217 and the camera 220, and a color CRT tube 311 to be measured. Furthermore, the color purity and static convergence adjustment apparatus of the color CRT tube comprised by the jig part 300 which mounts the drive unit of the said color CRT tube 311, and the conveyor 400 which covers the said jig part 300. The image processing unit 100 of claim 1, wherein the image processing unit 100 includes first and second color analyzers 111 and 112 for calculating the amount of light emitted from the red, green, and blue monochromatic lights R, G, and B, and a camera 220. An auxiliary monitor 113 displaying a window pattern and a search line for external positioning, and an interface board 115 transmitting data on the amount of emitted light calculated by the first and second color analyzers 111 and 112. And an instruction monitor 117 for displaying an adjustment screen and a peripheral device as well as general control of the peripheral device, and data measured for the color CRT 311 is compared with measurement reference data to the instruction monitor 117 for adjustment screens. And a color generator and a color convergence and static convergence adjusting device, characterized by comprising a computer (118) for outputting an image and a pattern generator (119) for outputting a single color raster signal on the screen of the color CRT (311). The method of claim 1, wherein the mechanical unit 200 is a sensor (211-217) that is moved forward and backward by the cylinder 231, a measurement camera 220 for measuring the convergence, and the sensor (211-217) Induction motors 233 and 234 for moving the support frame 221 up, down, left and right, the element unit 235 for removing magnetism generated around the color brown tube 311, and the whole system Color purity and static convergence adjusting device of the color CRT, characterized by comprising a control unit (236) for overall control. A first step of calculating a light emission amount of red, green, and blue by receiving light emission energy of a pattern output to a color CRT; a second step of comparing the data calculated in the first step with measurement reference data; A method for adjusting color purity of a color CRT comprising a third step of adjusting the purity by displaying an adjustment screen according to the result compared in step 1 on a support monitor. A first step of calculating the amount of light emitted for red, green, and blue by receiving the light emission energy of the pattern output to the color CRT; and storing the light emission energy calculated in the first step in the frame memory; A second step of calculating vertical and horizontal centers for each of the monochromatic rasters using only the data in the designated search area; and a third step of calculating relative distortion amounts of red, green, and blue, respectively, based on the calculation data of the second step. And a fourth step of comparing the amount of distortion data obtained in the third step with the measurement reference data, and a fifth step of adjusting the purity by displaying a static convergence adjustment screen according to the result data of the fourth step. Static convergence adjustment method of color CRT.