JPS59191240A - Adjustment and adjusting device of deflection yoke - Google Patents

Abstract

PURPOSE:To minimize the color shifting due to dispersed accuracy of manufacturing of the coil unit by observing the moving quantity of a vertical deflection coil and color shifting quantity when said vertical deflection coil is independently moved in relation to the horizontal deflection coil and by applying the convergence adjustment by moving the vertical deflection coil based upon the observed data. CONSTITUTION:At the neck portion of a cathode-ray tube, a horizontal deflection coil mounted on a bobbin is positioned and installed, a vertical deflection coil is fit around the horizontal coil and cross-talk adjustment is performed by rotating the vertical deflection coil around the horizontal deflection coil. Next, by setting the horizontal deflection coil and the vertical deflection coil to rotate together, the perpendicularity adjustment of longitudinal and lateral patterns upon the screen of the cathode-ray tube is performed. Subsequently, after resetting the vertical deflection coil so as to be able to be moved independently, it is moved to any desired location, the moving quantity of the coil and the color shifting quantity of a pattern upon the screen of the cathode-ray tube are observed, the moving quantity of the vertical deflection coil is counted, and the convergence adjustment to decide acceptability of the color shifting quantity is peformed by moving the vertical deflection coil based upon the data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method and apparatus for adjusting a semi-toroidal deflection yoke used in color television receivers, etc. The present invention relates to a method and apparatus for adjusting a deflection yoke suitable for aligning axes and eliminating color misregistration.

[Background of the invention]

FIG. 1 shows an example of a conventional deflection yoke adjustment technique.

In the conventional technique shown in this figure, a horizontal deflection coil is fixed to a jig having the shape of the neck of a cathode ray tube, and a vertical deflection coil is fitted onto the jig. In this state, a predetermined high-frequency electrical signal is input to the horizontal deflection coil, and the output signal induced in the vertical deflection coil is set so that it is below the set value.
An adjustment method is used in which the vertical deflection coil is rotated to the same angle as the horizontal deflection coil to measure cross-steering, and the mechanical central axes of these two coils are aligned.

However, the conventional technology has the following drawbacks.

(1) The center axis of the adjustment machine and the magnetic axes that deflect the blue, green, and red electron beams do not match due to manufacturing variations, resulting in color misalignment.

(2) Therefore, a large amount of man-hours are required for convergence adjustment using magnetic tape or the like.

(3) The quality of the product is poor and undesirable.

(4) Furthermore, since the color shift is not uniform and all adjustments are made by human sensation, there is wide variation in quality.

Next, FIGS. 2 and 3 show the deflection used in the technique already proposed by the applicant. - shows the adjusting device.

The adjustment device shown in these figures includes a stand 1, a vertical deflection coil holding frame mounting base 3 rotatably supported on the stand via a bush 2, a vertical deflection coil holding frame 4 attached to the stand, A holding frame 11 for a horizontal deflection coil rotatably attached to the stand 1 via a bushing 2, and a coil holder 21 for a vertical deflection coil supported by the holding frame 4 for the vertical deflection coil. There is.

A cathode ray tube 100 can be supported on the vertical portion of the stand l. The holding frame mounting base 3 for the vertical deflection coil is rotatable in the θ-θ' direction shown in FIG. 2 through the pinion 15 and the rack 13. The holding frame 4 for the vertical deflection coil is connected to the X-
It is supported so that it can move in the X', Y-Y' directions. The holding frame 11 for the horizontal deflection coil has a fitting groove 1.
2, the horizontal deflection coil is positioned and mounted. In addition, holding frame 1 for the horizontal deflection coil
1 is rotatable in the θ-θ′ direction shown in FIG. 2 through a pinion 16 and a rack 14. The coil holder 21 for the vertical deflection coil includes a cylinder n attached to the holding frame 4 for the vertical deflection coil, a piston ront n1 fitted into the cylinder n, and an L-shaped arm attached to the end of the cylinder n. , a rack formed at the tip of the arm, a pinion n meshed with the rack, and a block 5.
A chuck 29 is attached to the rack set formed in the block 6 and the arm separately and is arranged opposite to the block 6 and the arm.
, 30. Guide members 31 and 3 of each chuck 4 and 30
2, the vertical deflection coil is gripped via the chuck 29.30 by operating the p1 cylinder n in the forward direction, and the vertical deflection coil is released by operating the cylinder η in the return direction. It has become. In addition, the third
In the figure, 101 is a deflection yoke composed of a horizontal deflection coil and a vertical deflection coil, and 102 is a voltage level converter.

In the adjustment method performed using the adjustment device, the cathode ray tube 100 is supported on the stand l, and the horizontal deflection coil is attached to the fitting groove 12 formed in the holding frame 11 for the horizontal deflection coil. By positioning and attaching the horizontal deflection coil X to the neck part and further holding the vertical deflection coil by the coil holder 21,
A vertical deflection coil is attached to a holding frame 4 for the vertical deflection coil, thereby fitting the vertical deflection coil onto the horizontal deflection coil. In the convergence adjustment, the vertical deflection coil is moved to an arbitrary position by moving the retaining frame 4 for the vertical deflection coil, and the relationship between the amount of movement and the amount of color shift is observed, and the data is The vertical deflection coil is moved based on this, and this adjustment process is repeated sequentially to find the optimal position without color shift.

However, the adjustment method using the adjustment apparatus shown in FIGS. 2 and 3 has the following drawbacks.

(1) Since the horizontal deflection coil and the vertical deflection coil are each rotated independently in the θ-θ' direction, the crosstalk value changes and the orthogonality of the vertical and horizontal patterns on the CRT screen deteriorates. Become.

(2) Since it is necessary to perform the adjustment work repeatedly, the adjustment time becomes longer, and since the adjustment time varies, it is difficult to use other TVs.
It is difficult to adjust the takt time of assembly lines, etc.

[Purpose of the invention]

The purpose of the present invention is to eliminate the drawbacks of the previously proposed techniques described above,
It is an object of the present invention to provide a method for adjusting a deflection yoke, in which a horizontal deflection coil and a vertical deflection coil can be made as a single unit, and the brownish shift can be adjusted in a short time, and the adjustment time can be stabilized. Another object of the present invention is to provide a deflection yoke adjustment device that can reliably carry out the adjustment method described above and that can centrally perform various adjustments using a common device.

[Summary of the Invention] The method of the present invention involves positioning and attaching a horizontal deflection coil attached to a bobbin to the neck of a cathode ray tube, and removing a vertical deflection coil wound around a toroidal core from the horizontal deflection coil. At the same time, the vertical deflection coil is rotated by the rotation of the horizontal deflection coil to adjust crosstalk, and the horizontal and vertical deflection coils are set to rotate together. The horizontal and vertical deflection coils are rotated simultaneously, in the same direction and at the same rotation angle, so that the horizontal and vertical deflection coils are rotated vertically on the CRT screen.

After adjusting the orthogonality of the horizontal pattern, reset the vertical deflection coil so that it can be moved independently with respect to the horizontal deflection coil, move the vertical deflection coil to an arbitrary position,
Observe the amount of movement of the vertical deflection coil and the amount of color shift of the pattern on the screen of the cathode ray tube, calculate the amount of movement of the vertical deflection coil, move the vertical deflection coil based on that data, and judge whether the amount of color shift is acceptable or not. The unique feature is that the convergence adjustment is carried out to perform a In addition, the adjustment time can be stabilized.

In addition, the device of the present invention has a holding frame mounting base for a vertical lateral coil mounted on a stand installed so as to be able to support a cathode ray tube so as to be rotatable in the rotation direction of the neck of the cathode ray tube, and the holding frame mounting base A holding frame for the vertical deflection coil having a coil holder is mounted so as to be movable in two dimensions in a plane perpendicular to the axis of the cathode ray tube, and the horizontal deflection coil is positioned on the stand. The holding frame for the horizontal deflection coil is rotatably attached to the neck of the cathode ray tube, and in a device equipped with a crosstalk adjustment device, the holding frame for the vertical deflection coil and the horizontal deflection coil are attached to each other. A locking mechanism is provided that can be selectively switched between a set that connects the holding frame so that they can rotate together, and a reset that allows them to move independently.
It is characterized by the fact that it is equipped with a device that can generate monochromatic blue vertical and horizontal patterns, observe and process the data, and perform orthogonality adjustment and convergence adjustment of the vertical and horizontal patterns. The above method was successfully implemented.

[Embodiments of the invention]

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

4 to 7 show examples of twenty apparatuses for carrying out the method of the invention.

The adjustment device shown in these figures includes a stand 1, a holding frame mounting base 3 for the vertical deflection coil, a holding frame 4 for the vertical deflection coil, a holding frame 11 for the horizontal deflection coil, and a holding frame 11 for the vertical deflection coil.
Coil holder 21. Holding frame 4 for vertical deflection coil
and horizontal deflection coil holding frame 11+7) o-tsuku mechanism 33
, a system controller 43, a crosstalk adjustment device, an orthogonality adjustment device for vertical and horizontal patterns on the screen of the cathode ray tube 100, a convergence adjustment device, and the like.

As shown in FIG. 5, the stand 1 is formed into an angular cross-section. A bushing 2 is attached to a vertical portion of the stand 1 so as to be able to support a cathode ray tube 100, and is concentric with the support portion of the cathode ray tube lOO.

A holding frame mounting base 3 for the vertical deflection coil is rotatably supported by the stand 1 via a bushing 2. Further, as shown in FIG. 6, this holding frame mounting base 3 is rotated in the θ-θ′ direction shown in FIG. It's about to be controlled.

The holding frame 4 for the vertical deflection coil is as shown in FIG.
Vertical movement cross roller bearings 5 and 6 provided between the holding frame mounting base 3 and horizontal movement cross roller 2
Braun tube 1 through bearings 7.8 and 9°10
It is supported so as to be movable in a two-dimensional direction in a plane perpendicular to the axis 2 of 00, that is, in the X-X' and Y-Y' directions shown in FIG. connected.

The holding frame 11 for the horizontal deflection coil is attached to the stand 11C.
, and are rotatably attached via bushings 2.

As shown in FIG. The deflection coil is positioned and mounted. Furthermore, as shown in FIG.
Rotation is controlled in the θ-θ′ direction shown in FIG. 4 through a drive system extending from the pinion 16 to the rack 14.

As shown in FIG. 4, the coil holder 21 for the vertical deflection coil has a cylinder n1 attached to the holding frame 4 for the vertical deflection coil, a piston rond prisoner fitted into the cylinder n1, and a piston rond prisoner fitted to the tip of the cylinder n1. The attached L-shaped arm, the rack station formed at the end of the arm, and the rack assembly formed in the block δ together with the pinion engaged therewith are separately attached to the arm and the block 6. and chucks 29, 30 . Each chuck 29.3
0 guide members 31 and 32. and,
This coil holder 21 grips the vertical deflection coil from both sides by the chuck 29.30 by operating the cylinder n in the forward direction, thereby moving the vertical deflection coil together with its holding frame 4 to an arbitrary position. It is now possible to do so.

As shown in FIG. 6, the locking mechanism 1133 for the holding frame 4 for the vertical deflection coil and the holding frame 11 for the horizontal deflection coil is a cylinder 34 mounted on the holding frame mounting base 3 for the vertical deflection coil, 35. Piston rond fitted into each cylinder 34° 36.37. Each piston rod added, 3
7 and disposed on both sides of the holding frame 11 for the horizontal deflection coil. The cylinders 34, 35 are connected to a control unit 42 and a solenoid valve 40.
, 41 is connected to the cylinder fitting.

When the vertical deflection coil is operated in the forward direction, the holding frame 11 for the horizontal deflection coil is fixed to the holding frame mounting base 3 for the vertical deflection coil via the fixed shoe blade 39, and the holding frame 4 for the vertical deflection coil is fixed to the holding frame 4 for the vertical deflection coil. When the holding frame 11 for the horizontal deflection coil is set so that they can rotate together, and the cylinder tool 35 is operated to the return side, the holding frame 11 for the horizontal deflection coil is set so that it can rotate together with the holding frame 11 for the vertical deflection coil. The holding frame 4 is reset so that it can move independently.

The system controller 43, the crosstalk adjustment device 44, the orthogonality adjustment device for vertical and horizontal patterns on the screen of the cathode ray tube 100, the convergence adjustment device, and these adjustment devices will be explained based on FIG. .

The system controller 43 includes a sequencer, a microcomputer, etc., and is configured to send the command A.

The crosstalk adjustment device 44 inputs a predetermined high-frequency electrical signal to a horizontal deflection coil attached to the neck of the cathode ray tube 100, and outputs an output signal induced to a vertical deflection coil fitted onto the horizontal deflection coil. The rotation angle of the vertical deflection coil at which the output signal becomes equal to or less than the set value is determined, and based on the result, a command is sent to the motor driver 19 that rotates the holding frame mounting base 3 for the vertical deflection coil. It looks like this.

Prior to adjusting the orthogonality of the vertical and horizontal patterns, a command is sent from the system controller 43 to the control unit 42 of the cylinder fitting of the locking mechanism 33, the solenoid valves 40, 41, etc. of the lock mechanism 33, and the vertical deflection coil holding frame 4 and A holding frame 11 for the horizontal deflection coil is mounted so that it can rotate together with the holding frame 11.

A device for adjusting the orthogonality of vertical and horizontal patterns on the screen of the cathode ray tube 100 uses a pattern generator 45 to adjust the orthogonality of the vertical and horizontal patterns on the screen of the cathode ray tube 100.
A vertical and horizontal monochromatic pattern is generated on the screen of the camera, and the time from the synchronization signal to the pattern is measured for the vertical and horizontal patterns using the ITV camera 46. The convergence measuring device 47 converts the distance, and this data is also used. Then, the pattern orthogonality adjustment rotation angle calculation circuit 54 calculates the rotation angle to be rotated in the θ-θ' direction, and as a result, commands the motor driver to rotate the holding frame 11 for the horizontal deflection coil. It is now possible to send

Prior to convergence adjustment, system controller 4
3 to the solenoid valve 4 of the cylinder 34.35 of the locking mechanism 33
A command is sent to the control unit 42 such as 0, 41, etc., and the holding frame 4 for the vertical deflection coil is reset so that it can move independently with respect to the holding frame 11 for the horizontal deflection coil. .

The convergence adjustment device moves the vertical deflection coil to an arbitrary position by moving the holding frame 4 for the vertical deflection coil, and also moves the vertical deflection coil to an arbitrary position.
5 Alternate monochromatic vertical and horizontal linear patterns of red, green, and blue are produced on the screen of the cathode ray tube 100, and this is
Observe with a TV camera, find the time from the synchronization signal to the linear pattern, convert the color development position on the screen of the cathode ray tube 100 to a distance using the convergence measuring device 47, and calculate the amount of color shift of the three colors (on the screen of the cathode ray tube). This data is temporarily stored in the convergence data memory section. Furthermore, the data stored in the convergence data memory section 48 is retrieved, and a pass/fail management value is obtained from the pass/fail management value setting section 51, which is set according to the given specifications, etc., as the color shift tolerance value for the three colors. Based on these values, the pass/fail judgment circuit 52 makes a first pass/fail judgment of the color shift characteristics of the vertical deflection coil, and if it passes, the convergence adjustment work is completed. In the case of failure, the ratio of the amount of color shift of the three colors on the screen of the cathode ray tube 100 to the amount of positional movement of the vertical deflection coil obtained in advance from a plurality of deflection yokes is defined as a common movement coefficient and set. The common movement coefficient is taken out from the common movement coefficient setting section 49 that is set up, the data is taken out from the convergence data memory section, and based on these values, the vertical deflection coil movement amount calculation circuit is set to The amount of movement of the deflection coil is calculated, and based on the result, a command is sent to the vertical deflection coil movement drive section 53, which moves the vertical deflection coil holding frame 4.
is moved to another arbitrary position, then the amount of color shift is observed, data is stored, and a second pass/fail judgment is performed.If the result is 5 passes, the convergence adjustment work is completed.

If it fails again, an individual movement coefficient calculation unit (not shown) calculates the vertical deflection coil from the previous two color shift data stored in the convergence data memory unit and the movement amount of the vertical deflection coil. Calculate the individual transfer coefficient specific to
The individual movement coefficient specific to the vertical deflection coil is extracted from the individual movement coefficient calculating section, and is calculated by another vertical deflection coil movement amount calculation circuit (not shown) from the previous two data and the individual movement coefficient. The amount of movement of the vertical deflection coil is calculated, and based on the result, a command is sent to the vertical deflection coil movement drive unit 53, and as in the previous step, the movement is transmitted via the holding frame mounting base 3 for the vertical deflection coil. The vertical deflection coil is moved, and then the amount of color shift is observed, and comprehensive pass/fail judgment and classification are performed.

Furthermore, in the embodiment shown in FIG.
is provided, and after crosstalk is confirmed, an adhesive is applied between the horizontal deflection coil and the vertical deflection coil in response to a command from the system controller 43 to fix the horizontal deflection coil and the vertical deflection coil.

Next, the method of the present invention will be explained in connection with an embodiment of the method of the present invention shown in FIGS. 8 and 9 and the operation of the deflection yoke adjusting device of the embodiment described above.

First, the horizontal deflection coil attached to the bobbin is fitted into the fitting groove 12 formed in the holding frame 11 for the horizontal deflection coil, and the horizontal deflection coil is attached to the neck of the cathode ray tube 100 supported on the stand l. Position and install. Further, by holding the vertical deflection coil wound around the toroidal core using the vertical deflection coil holder 21, the vertical deflection coil is fitted onto the horizontal deflection coil.

Next, after resetting the locking mechanism 33 so that the holding frame mounting base 3 for the vertical deflection coil and the holding frame 11 for the horizontal deflection coil can be rotated independently, the crosstalk adjustment device 44 shown in FIG. The vertical deflection coil is rotated around the horizontal deflection coil by inputting a high frequency electric signal to the horizontal deflection coil and rotating the holding frame mounting base 3 for the vertical deflection coil. A rotation angle at which the output signal induced in the deflection coil becomes equal to or less than a set value is calculated, and the vertical deflection coil is rotated based on the rotation angle to perform crosstalk adjustment.

Then, the locking mechanism is set so that the holding frame mounting base 3 for the vertical deflection coil and the holding frame 11 for the horizontal deflection coil can be rotated together, and according to a command from the system controller 43 shown in FIG. 3 of the cathode ray tube 100 from the pattern generator 45 on the screen of the cathode ray tube 100.
A vertical and horizontal monochromatic pattern is generated from, for example, the central beam gun of the book's beam gun, and the ITV camera 46 is used to detect the top and bottom of the vertical pattern, and the right and left sides of the horizontal pattern, for a total of 4
Measure the time from the sync signal to the pattern for each point,
Convergence measurement device 47 performs distance conversion;
Based on this data, the rotation angle of the axis 2 of the cathode ray tube 100 is determined by the pattern orthogonality adjustment rotation angle calculation circuit 54.
That is, the magnitude of the rotation angle in the θ-θ′ direction shown in FIG. 4 is calculated, and the horizontal deflection coil holding frame 11 is
Sends a command to the motor driver that rotates the horizontal deflection coil, rotates the holding frame 11 for the horizontal deflection coil, causes the holding frame 4 for the vertical deflection coil to rotate together, and simultaneously rotates the vertical deflection filter and the horizontal deflection coil. Rotate in the same direction and at the same rotation angle,
Adjust the orthogonality of the vertical and horizontal patterns on the CRT screen.

After performing this orthogonality adjustment, the locking mechanism 33 is reset so that the holding frame 4 for the vertical deflection coil can be moved independently with respect to the holding frame 11 for the horizontal deflection coil.

Next, perform convergence adjustment as follows.

That is, by moving the holding frame 4 for the vertical deflection coil and moving the vertical deflection coil to an arbitrary position, the beam guns at both ends of the three beam guns of the cathode ray tube 100 are displayed on the screen of the cathode ray tube 100 as shown in FIG. As shown in FIG. 2, in the example in which red R and blue B are generated, the Shibata-turn generator 45 alternately generates monochromatic vertical and horizontal linear patterns of red and blue on the screen of the cathode ray tube 100 in response to a command from the system controller 43. ITV camera 46
The time from the synchronization signal to the linear pattern is determined, and the convergence measuring device 47 converts the coloring position on the screen of the cathode ray tube 100 into a distance to determine the amount of color shift between red and blue. is temporarily stored in the convergence data memory section 48.

Next, the data stored in the convergence data memory section 48 and the pass/fail management value are extracted from the pass/fail management value setting section 51, which is set according to the given specifications, as the allowable amount of red and blue color shift, and Based on these values, the pass/fail judgment circuit 52 performs the 11th pass/fail judgment, and if it passes, the convergence adjustment work is completed.

In case of failure, the CRT 1 for the positional movement of the vertical deflection coil determined in advance from multiple deflection yokes.
The ratio of the amount of color shift between red and blue on the screen of 00 is determined as a common shift coefficient, and the common shift coefficient is extracted from the common shift coefficient setting section 49 in which this is set, and is extracted from the convergence data memory section 48. The data is retrieved, and based on these values, the vertical deflection coil movement calculation circuit calculates the movement amount of the vertical deflection coil, and the result is sent to the vertical deflection coil movement drive unit 53. Send the command, move the vertical deflection coil to another arbitrary position via the holding frame 4 for the vertical deflection coil, observe the amount of color shift at this moved position, store the data, and confirm the second pass/fail. Make a judgment, and if it passes, finish the convergence adjustment work.

If it fails again, an individual movement coefficient calculation unit (not shown) calculates the perpendicular direction using the previous two color shift data stored in the convergence data memory unit 48 and the movement amount of the vertical deflection coil. An individual movement coefficient specific to the deflection coil is calculated, an individual movement coefficient specific to the vertical deflection coil is taken out from the individual movement coefficient calculation section, the previous two data are taken out from the convergence data memory section 48, and these From the value, a separate vertical deflection coil movement calculation circuit (not shown) calculates the movement amount of the p vertical deflection coil, and based on the result, sends a command to the vertical deflection coil movement drive section 53.
The vertical deflection coil is moved via the holding frame 4 for the vertical deflection coil, the amount of color shift is observed, and then comprehensive acceptance judgment and classification are performed.

Further, convergence adjustment can be performed for red and green, and green and blue, in the same manner as the convergence adjustment for world and blue.

According to the above-mentioned convergence adjustment, the adjustment can be performed with the least number of steps, and since the deflection yoke 10 is individually adjusted, high-quality adjustment can be performed in a stable time.

After completing the convergence adjustment, crosstalk is confirmed in the same manner as the crosstalk adjustment described above, and finally, adhesive is applied between the horizontal deflection coil and the vertical deflection coil using the adhesive applicator 55 shown in FIG. Then, the horizontal deflection coil and the vertical deflection coil are fixed.

Note that in FIG. 7, (A) indicates a command from the system controller.

Further, in FIGS. 2 and 3 and FIGS. 4 to 7, the same members are designated with the same reference numerals.

〔Effect of the invention〕

According to the seventh method of the present invention explained above, the vertical deflection coil is rotated around the horizontal deflection coil to adjust crosstalk, and the horizontal deflection coil and the vertical deflection coil are rotated together to adjust the crosstalk. The horizontal deflection coil and the horizontal deflection coil are rotated at the same time in the same direction and at the same rotation angle in the neck section of the CRT, and the vertical and horizontal patterns on the CRT screen are orthogonally modulated. Set the vertical deflection coil so that it can be moved independently, move the vertical deflection coil to an arbitrary position, observe the amount of movement of the vertical deflection coil and the amount of color shift of the pattern on the CRT screen, and check the vertical deflection coil. The amount of movement is calculated, the vertical deflection coil is moved based on that data, and convergence adjustment is performed to judge whether the amount of color shift is acceptable or not. This has the effect of suppressing the amount of color misregistration to the minimum, and also has the effect of making it possible to adjust the color misregistration in a short time and in a stable adjustment time.

Furthermore, according to the device of the present invention, a stand capable of supporting a cathode ray tube, a holding frame mounting base for a vertical deflection coil attached to the stand, and a holding frame for a vertical deflection coil attached to the stand; Separately from this, in a device comprising a holding frame for a horizontal deflection coil, which is attached to the stand, and a crosstalk adjustment device, the holding frame for the vertical deflection coil and the holding frame for the horizontal deflection coil are provided. A locking mechanism is provided that can be selectively switched between a set that is connected to the screws that can be rotated together and a reset that can be moved independently, and a monochromatic vertical and horizontal pattern of red, green, and blue is produced on the screen of the cathode ray tube. Since a device is provided that can perform orthogonality adjustment and convergence adjustment of the vertical and horizontal patterns to observe and process the data, this method has the effect of reliably implementing the method of the present invention, and is not included in the method. Another advantage is that various adjustments can be made centrally using a common device.

[Brief explanation of drawings]

Fig. 1 is a flowchart showing a conventional adjustment method, Fig. 2 is a front view of an apparatus for carrying out another conventional adjustment method, Fig. 3 is a sectional view taken along the line 1-1 in Fig. 2, and Figs. Figure 7 shows an embodiment of the apparatus for carrying out the method of the present invention, in which Figure 4 is a front view, Figure 5 is a sectional view taken along the line V-V in Figure 4, and Figure 6 is a vertical deflection view. FIG. 7 is a block diagram showing various adjustment devices and control units for each part; FIG. 8 is a flowchart showing an embodiment of the method of the present invention; FIG. , FIG. 9 is a 70-chart showing details of the convergence adjustment in FIG. DESCRIPTION OF SYMBOLS 1... Stand, 3... Holding frame mounting base for vertical deflection coil, 4... Holding frame for vertical deflection coil, 11
... Holding frame for horizontal deflection coil, 12 ... Fitting groove for horizontal deflection coil, 21 ... Coil holding frame for vertical deflection coil, ... Lock mechanism, 43 ... System controller , Required...Crosstalk adjustment device, 45...
・Pattern generator, 46... Engineering TV camera, 47...
- Convergence measuring device, 48... Convergence data memory section, 49... Common movement coefficient setting section, Father... Vertical deflection coil movement amount calculation circuit, 51... Pass/fail management value setting section, 52... Pass/fail determination circuit, 53... Drive unit for vertical deflection coil movement, 54... Pattern orthogonality adjustment rotation angle calculation circuit. Agent Patent Attorney Tadashi Akimoto Figure 1 Figure 4 Y Figure 5, Figure 6 Old

Claims (1)

[Claims] 1. A horizontal deflection coil attached to a bobbin is positioned and attached to the neck of a cathode ray tube, and a vertical deflection coil wound around a toroidal core is fitted onto the horizontal deflection coil, The vertical deflection coil is rotated by the rotation of the horizontal deflection coil to adjust crosstalk, and at the same time, the horizontal and vertical deflection coils are rotated together by rotating the rotation of the neck of the cathode ray tube. After rotating the horizontal and vertical deflection coils simultaneously in the same direction and at the same rotation angle to adjust the orthogonality of the vertical and horizontal patterns on the CRT screen, the vertical deflection coil is rotated independently with respect to the horizontal deflection coil. , move the vertical deflection coil to an arbitrary position, observe the amount of movement of the vertical deflection coil and the amount of color shift of the pattern on the CRT screen, and calculate the movement lid of the vertical deflection coil. A method for adjusting a deflection yoke, characterized in that a vertical deflection coil is moved based on the data, and a convergence adjustment is performed in which a pass/fail judgment is made regarding the amount of color misregistration. 2. The convergence adjustment is carried out by moving the vertical deflection coil to an arbitrary position, producing alternating monochromatic vertical and horizontal linear patterns of red, green, and blue on the screen of the cathode ray tube, and observing this. The amount of color misregistration is measured, and the first pass/fail judgment is made based on this data and the pass/fail control value, which is the allowable color misregistration value for the three colors. Calculating the amount of movement of the vertical deflection coil based on the data and a common movement coefficient determined in advance from the relationship between the amount of movement of the vertical deflection coil and the amount of color shift of the three colors for the plurality of deflection yokes, Based on the results, move the vertical deflection coil to another arbitrary position, measure the amount of color shift at that position, and make a second pass/fail judgment. If the result is a failure, the data of the amount of color shift from the previous two Based on this, determine the individual movement coefficient specific to the vertical deflection coil, and based on this, calculate the movement amount of the vertical deflection coil, move the position, observe the amount of color shift, and pass/fail the third time, in the same way as in the previous process. 2. The method of adjusting a deflection yoke according to claim 1, further comprising: making a determination. 3. Attach the holding frame mounting base for the vertical deflection coil to a stand installed to support the cathode ray tube so that it can rotate around the neck of the cathode ray tube, and attach the coil holder to the holding frame mounting base. The holding frame for the vertical deflection coil is mounted so that it can move in two dimensions in a plane perpendicular to the axis of the cathode ray tube, and the horizontal deflection coil is positioned on the stand to obtain a horizontal position. In an apparatus in which a holding frame for a deflection coil is rotatably mounted on a rotary shaft of a neck portion of a cathode ray tube, and further equipped with a crosstalk adjustment device, the holding frame for the vertical deflection coil and the holding frame for the horizontal deflection coil are combined. A locking mechanism is provided that can be selectively switched between a combined set so that they can be rotated together and a reset that allows them to be moved independently. A deflection yoke adjustment device comprising a device capable of adjusting the orthogonality of the vertical and horizontal patterns and adjusting the consence of the vertical and horizontal patterns by coloring the vertical and horizontal patterns, observing and processing the data.