KR100253906B1 - Automatic control method and device of vcr deck mechanism - Google Patents

Abstract

Automatic driving system of VSI Deck Mechanism including automatic control of deck odometer adjustment mechanism for automatically adjusting the odometer of VSI Deck Mechanism and control means for automatically adjusting the odometer by controlling the deck odometer adjustment mechanism. In the adjusting device, the deck odometer adjustment mechanism includes a motor assembly for rotating the driver tip assembly which can rotate the driver tip assembly and the driver tip assembly by a predetermined angle to turn the screw or nut which is the deck odometer adjustment point. The driver housing, which is fixed to and supports the motor assembly and the driver tip assembly at a predetermined position, is attached to the driver housing, and the moving mechanism for reciprocating the driver housing to the predetermined position, and when the deck and the driver housing are combined for adjustment, coincide with each other. Location And a video camera for measuring the position of the lead and tape of each post and head drum, and the control means includes a motor control unit for controlling the motor assembly to rotate the plurality of driver tip assemblies by a predetermined angle. Receives the video signal of the camera, calculates the position of the lead wire, the position of the post, and the taper position, and amplifies and detects the video signal generated from the video head of the deck and the position detector that informs the main computer to create an envelope waveform, which is then converted into a digital signal. The signal generated by the video signal processor and the deck's audio head, which is converted and notified to the main computer, is made effective and digitally signaled. To the main computer The main controller controls the control signal processor, the motor controller, the position detector, the video signal processor, the audio signal processor, and the control signal processor to adjust the deck traveling system, and the feed mechanism to perform continuous adjustment. Traveling system automatic adjustment device of VSI Deck mechanism including computer.

Description

Method and device for automatic adjustment of the driving system of VSI Deck Mechanism

1 is a schematic view from above to illustrate the odometer in a conventional deck mechanism.

2 is a perspective view of a screw head for adjusting the odometer in a conventional deck mechanism.

Figure 3 is a schematic view from the side for explaining the traveling system in the conventional deck mechanism.

4 is a schematic view from the side to illustrate the relational position at which the deck odometer adjustment mechanism of the present invention is coupled to the odometer of a conventional deck mechanism.

5 is a schematic diagram for explaining the power transmission relationship from the motor assembly to the driver team assembly in the deck odometer adjustment mechanism of the present invention.

6 is a schematic view from the side to illustrate that the motor assembly is coupled to the driver housing.

7 is a schematic cross-sectional view of a driver tip assembly.

8 is a schematic side view for explaining the moving mechanism.

9 is a schematic side view for explaining the positioning mechanism.

10 is a schematic cross-sectional view for explaining the positioning mechanism.

11 is a partial cross-sectional view for explaining a video camera.

12 is a block diagram for explaining the control means.

13 is a block diagram for explaining a motor controller.

14 is a view for explaining the screen information processing of the position detection unit.

15 is a waveform diagram for explaining the operation of the video signal processor.

16 is a diagram illustrating some electronic circuits and operation waveforms for processing a control signal.

17 is a view for explaining the process of coupling the adjustment screw and the driver tip assembly.

19 is a diagram for explaining a method of determining an envelope waveform.

20, 21, and 23 are flow charts for explaining the traveling system adjustment process of the control means.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically adjusting the traveling system of a video tape in a deck mechanism of VCR and a method of adjusting the same.

The conventional VCR deck's odometer adjustments allow you to manually adjust several adjustment points to precisely match the relative position of the videotape and the head drum to obtain good picture quality and to adjust the audio head and control head to obtain good sound quality and control signals. It was.

1 and 3 are for explaining the driving system adjustment of the conventional VCR deck.

The driving system (hereinafter, referred to as "driving system") of the VCR (Video Cassette Recorder) deck mechanism of the video home system (VHR) is a video tape 120 supply reel (112) of the cassette 110. It refers to all the kinematic elements that form the path from the side to the take-up reel (114).

The video tape 120 emerges from the supply reel 112 side of the cassette 110 and includes an inlet limiting post P1, an inlet inclined post P2, a head drum 130, and an outlet inclined post P3. ), And into the supply reel 112 of the cassette 110 via the audio and control head assembly 140, the exit restriction post P4.

In addition, there are tension arms, full width erase heads, inertia rollers, audio and control heads, and pinch rollers. Get mad.

Various adjustment points may be a flat head screw 210 or a cross screw head 220 or a hexagon nut 220 or a square nut 240 as shown in the example shown in FIG. The audio and control head (A / C HEAD) assembly 140 includes a hexagon nut 142 for height adjustment and an azimuth adjustment screw 144 for angle adjustment of the head.

Here, the following three conditions must be met for the odometer to operate correctly.

(1) Height conditions: The height at the reference plane of the tape centerline shall be the same height from the cassette exit point to the inlet side inclined post and the exit side slope post to the cassette inlet point.

(2) Parallel condition: The tape shall run in parallel in the path from the cassette exit to the entry slope post and the exit slope post to the cassette entry point.

(3) Twisting conditions: The tape should not be twisted between each tape guide. That is, when the tape is cut virtually in the width direction, the tension applied at each point of the cut surface should be uniform.

Adjustment of the odometer is a process of determining the kinematic position of each element to satisfy the above three conditions. For this purpose, modeling of each element and kinematic analysis of the driving system may be performed, but it is not accurate due to modeling error or calculation error.

Since the odometer adjustment stabilizes the odometer so that video and audio signals can be reproduced and recorded as desired, the actual process will determine whether the correct adjustment is made through several measurements to confirm the stability of the odometer.

As the measuring method, a method of determining whether the range of each signal obtained when the test tape containing a specific signal is mounted on the deck mechanism and played back is included in the prescribed value is mainly used. The following method is used.

* 2H test tape method:

A sinusoidal signal having a constant amplitude at a constant frequency (about 4 MHz) is recorded in the video signal area, and a sinusoidal signal of a constant frequency constant amplitude is recorded in the audio signal area. At this time, in order to synchronize the video signal, a pulse of 30 Hz is recorded in the control signal area, and it is determined whether to adjust the range of the linearity of the envelope waveform obtained from the video signal and the range of the audio signal amplitude.

** CTL Test Tape Act:

The pulse signal is recorded in the control signal area so that the magnitude is 1: 2, and the signal ratio of the two peak points is examined at the time of reproduction to determine whether to adjust. In addition, by recording the voice signal to determine the suitability of the voice signal.

*** 6H test tape method:

It is the same type of signal as the 2H test tape, but it is recorded in the 3X mode so that the playback can be confirmed smoothly even in the 3X mode tape.

The odometer adjustment process first adjusts the lower heights of P1 and P4 with the lead wire heights in the 90-degree phase of the head drum, and plays back the 2H test tape to examine the envelope waveform on the oscilloscope to obtain the required smoothness of the P2 and P3 posts. Adjust the driving linearity by adjusting.

Next, play back the CTL test tape and adjust the height adjustment nut so that the signal ratio satisfies 1: 2, and adjust the audio / control by adjusting the azimuth adjustment screw so that the amplitude of the audio signal is as large as required.

Afterwards, play the 6H test tape and check that the above adjustment is correct even in the 3x mode (6H verification process). Even in this process, the skilled worker can complete the adjustment work by adding a little adjustment work.

P1, P2, P3 and P4, as shown in FIG. 2, is formed with a flat head screw 210 having grooves on both sides of the post upper head, and a certain portion of the center has a grooveless shape. Thus, the tip of the flat head screwdriver that turns the screw head has a groove in the center so that it can be joined correspondingly.

There are two adjustments for the audio and control heads: head height adjustment and azimuth adjustment. Height adjustment is done by turning the hexagon nut and azimuth adjustment by the azimuth adjustment screw. The height adjustment nut adjusts the height of the entire A / C head assembly, and the azimuth screw adjusts the tilt of the A / C head.

As described above, the conventional deck odometer adjustment is performed by the operator manually using the posts P1, P2, P3, and P4 and the A / C head height adjustment nut and azimuth screw so that VCR signals such as video, audio, and control signals can be reproduced well. In this case, there were many differences in quality depending on the skill of the operator, and it was difficult to adjust precisely and quickly.

It is an object of the present invention to provide an apparatus and method for automatically and accurately making deck odometer adjustments.

SUMMARY OF THE INVENTION The present invention relates to a VSD deck mechanism comprising a deck odometer adjustment mechanism for automatically adjusting the odometer of a VSI deck mechanism and a control means for automatically adjusting the odometer by controlling the deck odometer adjustment mechanism. Odometer automatic adjustment device.

Deck odometer adjustment mechanisms allow multiple driver tip assemblies and driver tip assemblies to be rotated by a given angle to turn the deck odometer adjustment screw or nut. Motor assembly, motor assembly and driver tip for rotating the tip assembly A driver housing for fixing and supporting the assembly at a predetermined position, and a moving mechanism attached to the driver housing to reciprocate the driver housing to a predetermined position, and a positioning mechanism for matching each other when the deck and the driver housing are combined for adjustment. And a video camera for measuring the lead and tape positions of each post and head drum.

The control means includes a motor control unit and a deck for controlling the motor assembly to rotate a plurality of driver tip assemblies for turning the main computer for control of the overall control and the screw or nut, which are the adjustment points for the deck odometer, by a predetermined angle according to the instructions of the main computer. Video from video detectors and deck video heads that receive video signals from video cameras for measuring the lead and tape positions of each post and head drum, and calculates the position of the lead wires, posts and taper to inform the main computer Amplify and detect the signal to create an envelope waveform, convert it into a digital signal, and convert it into a main computer.The video signal processor and deck signal to the main computer. In the control head of the And a control signal processing unit for holding the peak value of the generated signal and digitalizing the signal to the main computer. The main computer includes a deck running system adjusting mechanism, a motor control unit, a position detection unit, a video signal processing unit, an audio signal processing unit, and The control signal processor controls the deck's odometer automatically.

The method of the present invention is a method for automatically adjusting the VSI deck odometer using the VSI Deck Mechanism Automatic Adjustment Device. 1) First, it is continuously checking whether the deck to be adjusted has arrived at the working position. When arrived, step 2) to engage the deck by lowering the adjustment mechanism, then step 3) to rotate the driver 180 degrees to the left and right to interlock with each other so that the driver head and screw head or nut are correctly engaged with each other, then P1 4) measuring the height of the lead wire in the 90 degree phase of the head drum to approximate the height of the P2, P3, and P4 posts; Compare the height of the lead wires in the phase and rotate P1 or P4 to match the height of the lead lines so that the heights of P1 and P4 are 5), then measuring the gap between the lower end of the head taper and the lead wire of the head drum and adjusting P2 and P4 so that the gap is approximately " 0 ", then through the video head Adjusting P2 and P3 again so that the linearity of the envelope value of the obtained video signal is larger than the reference value 7), and then adjusting the head height adjustment nut so that the peak value of the control signal generated from the control head is greater than or equal to 8 ), And then adjust the azimuth adjustment screw on the head assembly so that the RMS value of the audio signal at the audio head is above the reference value.9) After the process is complete, measure the video, audio and control signals once again. Comparing with the reference value, and if it satisfies the pass mark, and if it fails, it comprises the step of fail mark.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Figure 4 is a schematic view from the side to explain the relationship position of the deck odometer adjustment mechanism of the present invention coupled to the traveling system of the conventional deck mechanism, Figure 5 is a driver tip in the motor assembly in the deck mechanism adjustment apparatus of the present invention Figure 6 is a schematic diagram for explaining the power transmission relationship to the assembly, Figure 6 is a schematic side view, Figure 7 is a schematic sectional view of the driver tip assembly, Figure 8 is a description of the moving mechanism to explain that the motor assembly is coupled to the driver housing Fig. 9 is a schematic side view for explaining the positioning mechanism, Fig. 10 is a schematic sectional view for explaining the positioning mechanism, Fig. 11 is a partial sectional view for explaining the video camera, and Fig. 12 is a block diagram for explaining the control means. FIG. 13 is a block diagram for explaining the motor controller, and FIG. 14 is a screen information processing process of the position detector. FIG. 15 is a waveform diagram illustrating the operation of the video signal processor, FIG. 16 is a diagram illustrating some electronic circuits and operation waveforms for processing the control signal, and FIG. 17 illustrates a process of combining the adjusting screw and the driver tip assembly. FIG. 19 is a diagram for explaining a method of determining an envelope waveform, and FIGS. 20, 21, and 23 are flowcharts for explaining a traveling system adjustment process of a control means.

As shown in FIG. 4, the deck odometer adjustment mechanism 300 of the present invention descends from above, and the video camera 310 and the driver tip assembly 340 are coupled with the position adjustment position of the conventional deck mechanism 100. do.

The deck traveling system adjustment mechanism 300 is expressed in a model so as to easily understand the mutual coupling relationship with the traveling system adjustment position of the conventional deck mechanism 100. The deck odometer adjustment mechanism 300 shows that a plurality of driver tip assemblies 340, a motor assembly 330, a moving mechanism 302, and a video camera 310 are installed on the reference plate 301.

5 shows that the power for returning each adjustment post of the deck mechanism is transmitted to the motor assembly 330 → drive shaft 332 → timing belt 334 → driven shaft 336 → screw driver tip assembly 340. It is to give.

Motor Assembly: In Figure 6, a motor assembly is shown coupled to a driver housing.

The rotational force of the motor 331 is transmitted from the drive shaft 332 of the harmonic driver 333 to the driven shaft 336 through the timing belt 334.

The motor assembly 330 is configured to generate a driving force for turning the driver tip assembly 340 in response to an instruction from a control means. The motor assembly 330 includes a DC servo motor and a power transmission unit to allow sufficient driving force and fine position control. .

Step motors may be used instead of servo motors. And a reducer: harmonic drive 50: 1 333 is used to increase the torque.

The speed reducer 333 may be selected and used appropriately, but in the present embodiment, when the input wave generator 335 connected to the motor shaft rotates, the flex spline 337 rotates at a rotation ratio of 1/50. I chose a harmonic driver.

Suitable housings 362 and 364 are prepared such that the housing 339 of the harmonic driver to which the motor and the subcooler spline 338 are fixed is fixed to the top plate 364. A drive shaft 332 is connected to the plex spline 337, which is supported by two bearings 366. The rotation of the drive shaft is transmitted to the driven shaft by the timing belt, and the screw driver tip assembly is mounted on the driven shaft.

Power transmission is difficult to connect the motor, reducer shaft and screw driver shaft directly because the adjustment points on the deck mechanism is concentrated in a narrow space, the motor 331 using a timing belt (334) ) And the reducer shaft 332 and the screw driver shaft 336 are installed apart.

The upper plate 364 and the lower plate 362 are provided to support the power transmission unit, and six motor assemblies and six power transmission units are mounted to adjust six posts.

Screwdriver Tip Assa'y: shown in FIG.

The adjustment points on the deck mechanism have a position error with respect to some reference point. Therefore, the manufacturing error of these decks must be overcome for the screwdriver tip to be located at the adjustment point. For this purpose, flexible shaft couplings with different flange joint holes can be used for easy movement in the x and y directions. In addition, in order to turn the screw, the screw driver must press the screw head with a suitable force, so a compression spring is installed in the z direction.

The driver tip assembly is the part that directly returns each post of the deck mechanism. Power is transmitted from the motor → drive shaft → driven shaft → screw driver tip assembly.

As shown in FIG. 7, the screw driver tip assembly has a flange 342 formed on the driver shaft 341 and a spline shaft flange 345 having the set screw 344 coupled to the spline shaft 343. Screwed at a 90 ° interval, the screw hole of the spline shaft flange 345 is smaller than the screw head and larger than the screw shaft is fastened so as to move well in the horizontal direction.

The spline shaft 343 is inserted into the spline hole 348 of the fitting pipe 347 coupled to the driven shaft 336 by the set screw 346 to rotate the driven shaft so that the screwdriver tip 341 is rotated. Pass it on.

A certain amount of pressure is required to turn the screw driver tip 341. As the height of each post varies as it rotates, a spring 349 is inserted between the driven shaft and the spline shaft head in the joint pipe. .

Driver Housing: A part is shown in FIG.

The driver housing is the driver housing that couples and secures the power transmission unit, the motor assembly, the driver tip assembly, and the like, in which two plates are coupled up and down by several spacers 367. A motor, a speed reducer, and a CCD camera are mounted on the upper plate (motor plate) 364, and a power transmission unit is located between the upper plate and the lower plate (pulley plate) 362. And screwdrivers hang under the pulley.

The outline of the moving mechanism is shown in FIG. 8, and the driver housing is lowered to adjust the odometer, and when the adjustment is completed, the driver housing is lifted up so that the pallet with the deck can take the conveyor to the next working position. Play a role. This moving mechanism couples the operating rod 386 of the pneumatic cylinder 384 installed in the fixed support 382 with the intermediate plate 390 (hatched portion), and the intermediate plate 390 is provided with four rubber rods ( Four stand posts (394) on a fixed support for coupling the pulley (392) to the pulley plate (362) of the driver housing to the space, and to guide the intermediate plate (390) to move constantly up and down. To install (to avoid the complexity of the drawings, only one and three pillars are not shown), it is configured by connecting the intermediate plate (390) up and down to the support (394).

As the pneumatic cylinder, a double acting pneumatic cylinder (f = 20) is used. A pneumatic cylinder with a cushion is used because the positioning mechanism and driver, which will be explained in detail below, need to reduce the speed at the bottom dead center to find the correct position.

The intermediate plate 390 and the driver housing are connected with four rubber rods 392 to absorb the positional error between the pallet (412 in FIG. 9) and the positioning mechanism fixed to the driver housing. In addition, two pneumatic cylinders are installed on the upper plate of the fixed support, and the intermediate plate 390 moves up and down by the pneumatic cylinder to move the driver housing up and down. In order to avoid the complexity of the drawings, only one motor assembly, a pneumatic cylinder, a driver tip assembly, a positioning mechanism, etc. are shown and one is omitted.

Positioning mechanism: The outline is shown in FIGS. 9 and 10.

The assembly error of the VCR deck mechanism itself can be corrected by the horizontal compliance of the screwdriver tip assembly as described above.

However, a pallet (with a VCR deck seated on the pallet) coming from the conveyor belt 416 is fixed at the adjustment position by the fixing mechanism 418, and an error occurs when the deck is combined with the adjustment mechanism. Therefore, the positioning mechanism is to match the position of the deck and the drive housing.

Conic poles (two conical posts on the pallet) 414, used to mount deck 100 to pallet 412, are used to match the position of the deck and driver housing.

This positioning mechanism consists of a top guide 420 in the form of a mortar with a groove having a depth groove 422 at the center attached to the pulley plate 362 and a bottom guide which is a conical post 414 of a pallet. The upper guide is connected to a spring 424 which is a cushioning resilient device through a ball bush installed in the groove of the guide housing 430. This shock absorber reduces the impact of the conical post on the driver housing.

In the positioning operation of the positioning mechanism, when the deck is positioned, the driver housing is lowered by the moving mechanism. The positioning mechanism first descends to the deck to accurately position and then the screw drivers are engaged with each adjustment point.

When all devices (motor assembly, power train, screwdriver tip assembly, positioning mechanism, etc.) connected to the driver housings (motor and pulley) of the deck odometer adjustment mechanism are lowered for adjustment, between the deck and the driver housing Even if an error occurs, the error can be corrected by the function of the positioning mechanism. That is, when descending, the conical post is inserted into the upper guide groove of the positioning mechanism so that it can be accurately positioned.

Multiple positioning mechanisms may be provided. Four guide posts are used and two pneumatic cylinders are used on both sides to absorb the impact of the driver housing up and down movements and relative movements with the deck resulting from the positioning mechanism. By operation of pneumatics, the intermediate plate 390 descends along the guide post and the relative motion generated by the positioning mechanism is absorbed by the rubber rods (four).

The video camera is designed to properly match the lower heights of P1 and P4 and to measure the lead wires of the 0 and 180 degrees of the head drum and the bottom of the tape as shown in FIGS. 3 and 11. .

In this embodiment, a two-dimensional image is transferred to a position detection unit using a CCD camera, and the height is processed by appropriately processing the respective heights.

The problem here is that the optical path from the CCD camera part mounted on the motor board to the object (bottom post, tape bottom) is very narrow and vertically bent, so that an appropriate optical system must be installed in the middle, and to obtain a desired resolution. In order to ensure at least a resolution of about 10 μm or more per pixel, an enlarger lens having a focal length of 75 mm is used. The distance from the lens to the object, the image screen (in the case of CCD camera, the image pickup device) must satisfy the following equation so that the image can form on the screen.

1 / p + 1 / q = 1 / f

Where f is the focal length of the lens

p: distance from lens to object

q: distance from the lens to the screen

If f = 75mm and the distance from lens to object p = 200mm, the distance q from lens to screen is 120mm from The magnification ratio μ at this time

μ = f / (p-f) = 0.6

Therefore, when the size of the image sensor of the CCD camera is 1/2 inch and the number of pixels is 512, the resolution per pixel R is

R = 12.7 / μ * 512 = 41.3m / pixel

This results in satisfying the required minimum resolution of 50 μm.

An overview of the entire optical system is shown in FIG. The mirror 442 is used to vertically fold the optical path, and the enlarger lens 444 and the mirror are connected to the pipe 446 and the lens coupling port 450. The expander lend 444 and the CCD element 447 are connected by a barrel 448, and the length of the barrel is adjusted by the length adjusting knob 449 so that the focal point can be accurately focused.

This barrel is dual, the inner barrel is coupled to the length adjusting knob 449 and the expander lens, and the outer barrel is coupled to the CCD element.

The CCD element is calibrated by a set screw at the end of the barrel, and the orientation is adjusted so that the image is in the desired direction.

As shown in FIG. 12, the control means includes a main computer 500, a motor controller 520, a position detector 540, a video signal processor 560, an audio signal processor 580, and a control signal processor 600. It includes a video signal of the video camera that controls the deck adjustment work as a signal of the deck's necessary posters, head drum and taper, and the video, audio and control head signals on the deck Control the motor for the driver tip assembly rotation so that the video, audio and control signals are at a predetermined value and the deck adjustments are made continuously.

As shown in FIG. 13, the motor controller includes a CPU, a ROM, a RAM, a D / A converter, an encoder, and a communication port connected to a data bus, and a servo motor driver connected to a D / A converter. The servo motor is connected to the driver, and the servo generator is coupled to the servo motor, and the output signal of the pulse generator is connected to the encoder.

The motor control unit receives a command for controlling the motor from the main computer of the control unit through the communication port, processes the program with the data and data stored in the ROM and RAM, and sends a motor control signal to the D / A converter. In the D / A converter, the motor control signal, a digital signal of the CPU, is converted into an analog signal, and the servo motor driver amplifies the analog signal and supplies it to the servo motor. The motor is then rotated and the driver tip assembly connected to the motor is rotated. A pulse proportional to the motor rotation angle is generated by the pulse generator and transmitted to the encoder. The encoder counts this pulse, generates a parallel signal, and sends it to the CPU. The CPU receives this signal, verifies that the driver has rotated by the required angle, and causes the main computer to rotate only by the commanded angle.

The position detection unit receives the video signal of the video camera as shown in Fig. 14A, calculates the position of the lead wire, the position of the post, and the position of the taper to inform the main computer.

The position detector is also called the frame grabber, which is mounted in the expansion throat of the main computer. The position detection unit A / D converts the video signal from the CCD camera and provides luminance information on one screen (e.g., 512 x 512 pixels). At this time, each pixel has a value from 0 to 255 depending on the luminance. For example, if the image for the P2 post is shown in Fig. 1 through proper lighting, the sampled value in the frame grabber may be represented as shown in FIG. At this time, if a random column is irradiated to find a part that changes from 100 to 0, a part that changes from 0 to 255, and a part that changes from 255 to 0, the position of the lead line and the bottom of the tape can be found. In fact, the brightness of the screen is not constant as described above, so here, the threshold is held at 80 and mapped to 1 if it is larger than 80, and mapped to 0 if it is smaller. Measure the height of the lead line and the bottom of the tape. PROCESSING will also take the appropriate THRESHOLD value for the other posts.

The video signal processor amplifies and detects the video signal 561 generated from the video head of the deck head drum by the envelope detection circuit 562 to produce an ENVELOPE waveform 563, which is then converted into an A / D converter 564. To convert the digital signal to the main computer 500.

In Fig. 15, (a) is an envelope waveform, and (b) shows a head switching signal.

Envelope waveforms are sensitive at the point where the two video heads, A and B, are switched, and 562, 564, 566, and 568 points are important factors for adjustment.

Points 564 and 566 are measured using data sampled slightly before and after the A and B head switching signals, while 562 and 568 are scanned to the point where the data does not change based on 564 and 566 points. You will find

From this, the slope of the straight line L1 between 562 and 564 points and the straight line L2 between 566 and 568 points of the straight line is measured and the P2 and P3 posts are adjusted based on this.

The linearity of the envelope waveform is obtained by dividing the minimum value of the envelope waveform (564 points in this example) by the maximum value 566 of the envelope waveform.

The audio signal processor amplifies and detects the signal 568 generated from the audio head of the deck using the RMS-TO-DC CONVERFER in the converter 582 to create an effective value 583, and then converts the A / D converter 584 into an audio signal processor. Digital signal to notify the main computer. Optimal adjustment is made by turning the azimuth screw (AZIMATH SCREW) from side to side in the direction of increasing value.

The control signal processor holds the peak value in the peak detector circuit 610 in the signal 601 generated from the control head of the deck, and digitally converts the held peak value 611 in the A / D converter 604 to the main computer. Inform.

The peak detector circuit 610 is shown in FIG. 16A. The control signal S1 is input to the + terminal of the op amp OP and amplified, and its output is detected via the diode D1, and smoothed and output from the capacitor C1. The telephone charged in the capacitor C1 is discharged and reset when the switch SW is closed by the reset signal RESET.

The output waveform of the detector 610 can be properly adjusted using the switch SW, and the reset signal RESET is controlled by a computer using parallel I / O.

The shape of the control signal is the same as the signal waveform S1 in Fig. 16B, and S2 is the A and B head switching signals. S3 is the reset signal and S4 is the waveform main output signal of the control signal passed through the detector. After reset, sampling takes place once after a certain time and the peak value is measured. Measure the peak value for each sampling and turn the height adjustment nut (NUT) left or right to find the direction of increase and adjust until the peak of the control signal is reached.

The process by which the control means controls the deck odometer adjustment mechanism to adjust the deck odometer is as follows.

20, 21, and 22 are flowcharts of the odometer automatic adjustment process for explaining this process.

1, first, it continues to check whether the deck to be adjusted has arrived at the working position (step 700), and when it arrives, the deck adjusting mechanism (called "SAM" in the drawing) is lowered to engage the deck (step 710).

2, Then, in order to ensure that the driver tip (head) and the screw head or nut are correctly coupled to each other, as shown in FIG. 17, the drivers are rotated 180 degrees to the left and right to be engaged with each other (step 720). That is, while the driver tip 650 is elastically pressed on the screw head 640, the driver tip is rotated 180 degrees to the left and right so that the tip is coupled to the screw head groove. If it is a hexagon nut, the driver tip is a hexagonal groove, and the nut is inserted into this groove.

Next, the height of the lead wire of the head drum is measured to roughly match the heights of the P1, P2, P3, and P4 posts (step 740). As shown in FIG. 18, the height of the lead wire is measured using the video camera images provided at the inlet (0 degree) and the outlet (180 degree) of the head drum 660. As shown in FIG.

4, Then, the lead line height H90 in the 90 degree phase of the head drum is calculated using the lead line height in the 90 degree phase of the head drum using the lead line height of the entrance / exit side (step 760).

5, Next, the lower heights H1 and H4 of P1 and P4 are also measured with the video camera image (step 780), and compared with the lead wire height of the 90 degree phase (step 800). In this comparison, P1 or P4 is rotated to coincide with the height of the lead line so that the heights of P1 and P4 coincide with the height of the lead line (step 782).

6, after this step is completed, the gap Gab between the inlet and outlet side taper bottoms of the head drum and the lead wire is measured (step 810), and P2 and P4 are adjusted so that the gap is approximately "0" (820, 822). step).

7, when the adjustment is completed, measure the linearity (LT) of the envelope value of the video signal obtained through the video head (step 830), and compare the LT value with the reference value (step 840) so that it becomes larger than the reference value. Adjust P2 and P3 again (step 842).

Next, the peak value of the control signal generated from the control head is measured (step 850), and the head height adjustment nut is adjusted to be equal to or greater than the reference value by comparing the peak value with the reference value (step 860) (step 862).

9, the RMS value of the audio signal in the audio head is then measured (step 870), the RMS value is compared with the reference value (step 880), and the azimuth adjustment screw of the head assembly is adjusted so that the effective value is equal to or greater than the reference value ( Step 882).

10, after this process is completed, the signals are measured once more (step 890), compared with each reference value (step 900), and if the conditions are satisfied, the pass mark is displayed (step 910), and if the fail is indicated ( Step 920), the adjustment mechanism is raised (step 930).

In each step, if the adjustment limit of the adjusting screw or adjusting nut is exceeded, the next step adjustment is bypassed.

This can be made simpler by installing a video camera at the 90-degree position of the head drum in steps 3 and 4 and measuring the leadline height.

The method of adjusting the P2 and P3 posts by determining the envelope waveform in step 7 is as shown in FIG. The envelope waveforms near the time point T at which the video heads A and B are switched are compared to adjust P2 or P3 according to the illustrated method. That is, if the waveform is the same as that of FIG. 19 (1), it is adjusted by rotating P3 clockwise. If the waveform is the same as that of FIG. 19 (2), it is adjusted by rotating the P3 counterclockwise. If it is a waveform, it adjusts by rotating P2 clockwise and if it is a waveform like FIG. 19 (4), it adjusts by rotating P2 counterclockwise. And when the linearity of an envelope waveform becomes 0.8 or more, it is set as a pass line.

In steps 8 and 9, it is better to adjust the audio signal and the control signal to the maximum value.

By using the present invention as described above, the operator can manually adjust the post odometer P1, P2, P3 and P4 and A / C head height adjustment nut and azimuth screw to adjust the deck odometer. In addition, the quality difference is eliminated according to the operator's skill and accurate and rapid adjustment is possible.

Claims (4)

Automatic driving system of VSI Deck Mechanism including automatic control of deck odometer adjustment mechanism to automatically adjust the odometer of VSI Deck Mechanism and control means for automatically adjusting the odometer by controlling this Deck odometer adjustment mechanism. An adjustment apparatus, wherein the deck odometer adjustment mechanism includes: a plurality of driver tip assemblies for turning a screw or nut that is a deck odometer adjustment point; A motor assembly for rotating the driver tip assembly to rotate the driver tip assemblies by a predetermined angle; A driver housing to fix and support the motor assembly and the driver tip assembly at a predetermined position; A moving mechanism attached to the driver housing to reciprocate the driver housing to a predetermined position; A positioning mechanism for coinciding positions when the deck and the driver housing engage for adjustment; Traveling system automatic adjustment device of VSI Deck mechanism including video camera for measuring the position of lead wire and tape of each post and head drum. Automatic driving system of VSI Deck Mechanism including automatic control of deck odometer adjustment mechanism to automatically adjust the odometer of VSI Deck Mechanism and control means for automatically adjusting the odometer by controlling this Deck Odometer Adjustment Mechanism An adjusting device, comprising: a main computer for overall control; A motor control unit for controlling the motor assembly to rotate a plurality of driver tip assemblies for turning a deck odometer adjustment point screw or nut by a predetermined angle according to the instructions of the main computer; A position detection unit which receives an image signal of a video camera for measuring lead and tape positions of each post and head drum of the deck, calculates the position of the lead wires, the position of the posts, and the taper position and informs the main computer; A video signal processor for amplifying and detecting a video signal generated from a deck video head to produce an envelope waveform, converting the signal into a digital signal, and informing the main computer; An audio signal processor for converting the signal generated from the audio head of the deck into an effective value and converting the signal into digital signals and informing the main computer; And a control signal processor for holding the peak value of the signal generated by the deck's control head and digitally signaling the signal to the main computer. The main computer includes the deck running system adjusting mechanism, a motor controller, a position detector, and a video. A traveling system automatic adjustment device of VSI DEAL mechanism which controls the signal processing unit, the audio signal processing unit, and the control signal processing unit to automatically adjust the traveling system of the deck. Automatic driving system of VSI Deck Mechanism including automatic control of deck odometer adjustment mechanism to automatically adjust the odometer of VSI Deck Mechanism and control means for automatically adjusting the odometer by controlling this Deck Odometer Adjustment Mechanism An adjustment apparatus, comprising: a deck odometer adjustment mechanism comprising: a plurality of driver tip assemblies for turning a screw or nut that is a deck odometer adjustment point; A motor assembly for rotating the driver tip assembly to rotate the driver tip assemblies by a predetermined angle; A driver housing to fix and support the motor assembly and the driver tip assembly at a predetermined position; A moving mechanism attached to the driver housing to reciprocate the driver housing to a predetermined position; A positioning mechanism for coinciding positions when the deck and the driver housing are engaged for adjustment; And a video camera for measuring lead and tape positions of each post and head drum, the control means comprising: a motor control unit for controlling the motor assembly to rotate the plurality of driver tip assemblies by a predetermined angle; A position detection unit which receives the video signal of the video camera and calculates the position of the lead wire, the position of the post and the position of the taper to inform the main computer; A video signal processor for amplifying and detecting a video signal generated from a video head of a deck to produce an envelope waveform, converting the signal into a digital signal, and informing the main computer; An audio signal processor for converting the signal generated from the audio head of the deck into an effective value and converting the signal into digital signals and informing the main computer; A control signal processing unit for holding the peak value of the signal generated by the control head of the deck, digitalizing the signal, and informing the main computer; And a main computer controlling the motor control unit, the position detecting unit, the video signal processing unit, the audio signal processing unit, and the control signal processing unit to adjust the traveling system of the deck, and to control the transfer mechanism to perform continuous adjustment work. Traveling system automatic adjustment device of V'Sial deck mechanism. A method for automatically adjusting VSI Deck Odometer using the apparatus of claim 1, comprising: 1) continuously checking whether the deck to be adjusted has arrived at the working position and then lowering the adjustment mechanism to engage the deck. step; 2) then rotating the driver 180 degrees to the left and right so that the driver head and the screw head or nut are correctly engaged with each other so as to interlock with each other; 3) next, measuring the height of the lead wire in the 90 degree phase of the head drum to approximate the P1, P2, P3, P4 post heights; 4) Next, measure the bottom heights of P1 and P4 with the video camera image as well, compare them with the lead wire height of 90 degree phase, and rotate P1 or P4 to match the height of the lead line so that the height of P1, P4 is Matching the height; 5) thereafter, measuring the gap between the lower end of the taper at the inlet and outlet side of the head drum and adjusting the P2 and P4 such that the gap is approximately " 0 "; 6) again adjusting P2 and P3 such that the linearity of the envelope value of the video signal obtained through the video head is larger than the reference value; 7) subsequently adjusting the head height adjustment nut so that the peak value of the control signal generated at the control head is equal to or greater than the reference value; 8) thereafter adjusting the azimuth adjusting screw of the head assembly such that the RMS value of the audio signal at the audio head is equal to or greater than a reference value; 9) After all the above steps, video, audio and control signals are measured again and compared with each reference value, and if satisfied, the pass indication is made. Way.