KR100601290B1 - Image display device and method for converting and displaying images - Google Patents

Abstract

The present invention relates to an image display apparatus, comprising a lenticular lens plate in which a plurality of lenticular lenses are arranged at a predetermined width (L), and an image image recorded on a surface of a projection plate disposed on the rear side of the lenticular lens plate. The display device outputs an image image through the lenticular lens plate, wherein the image image is repeatedly divided and synthesized into the same width (d) of the plurality of images to form a converted image.

Lenticular lens, split and composite, transform image, width, single frame, subframe

Description

Image display device and method for converting and displaying images}

1 is a perspective view showing a coupling state of the lenticular lens and the projection surface,

2 is a plan view of a projection surface in which a graphic shows a structure;

3 is a plan view when the graphic of FIG. 2 is viewed through a lenticular lens plate;

4 is a plan view when the graphic of FIG. 2 is viewed through a lenticular lens plate;

5 is a plan view when the graphic of FIG. 2 is viewed through a lenticular lens plate; FIG.

6 is a perspective view of an image display apparatus according to the present invention;

FIG. 7 is a stereoscopic perspective view illustrating a state in which a video image is vertically moved by a distance d of a width (or subframe) of a converted image by a driving unit;

8 is a schematic block diagram of a driving unit;

9 is a conceptual diagram illustrating a method of dividing and combining three single images by a single frame in the same horizontal direction;

10 is a flowchart illustrating a method of segmenting and synthesizing three video images;

FIG. 11 is a conceptual diagram illustrating a state in which three single images are divided and synthesized by a single frame in the same horizontal direction and displayed on the display apparatus 10.

<Brief description of symbols for the main parts of the drawings>

10 ... image display unit

11.Lenticular lens pin

12.Multiple lenticular lenses

15.Projection board

20 ... video image, converted image

50 ... driving part

51 microprocessor,

52.DC motor

53 ... Reduction Gear

54.Encoder

L ... width of each lenticular lens

F ... width of each single frame

d ... width of each subframe

n ... number of multiple video images before conversion

The present invention relates to an image display apparatus and a method of converting and displaying an image. More particularly, an image display apparatus and an image, in which a converted image obtained by repeatedly dividing and combining a plurality of video images is output through a plurality of lenticular lens plates. The present invention relates to a method for producing a converted image and a display method thereof that can be used in a display device.

A graphic projection apparatus using a lenticular lens comprises a lenticular lens plate in which arc-shaped lenses are arranged at regular intervals of a string length, and a projection plate bonded to a focal plane of the lenticular lens plate to realize graphics on one surface thereof. Scanning line array layers, which implement graphics that show different still images on the plate, are sequentially positioned at multiple positions of the length of the string at different positions within the length of the string, and according to the angle of the eye through the lenticular lens plate. As a projection apparatus using parallax of the projected graphics, there are ones that give a sense of perspective by optical path difference to impart a three-dimensional effect and to display two or more still images according to the visual difference.

An example of a graphic projection apparatus using such a lenticular lens is a graphic projection apparatus disclosed in Korean Utility Model Publication No. 20-1998-55597 (Application No. 20-1997-17786). This makes one graphic with several pieces of graphics on the projection surface, and the scanning lines of the pieces of graphics are different from each other, while the scanning lines of the pieces of graphics are each positioned alone in each other's area, and the stereoscopic by perspective It is characterized by a combination of graphics and graphics that vary in multiple stages. According to the graphic projection apparatus, not only the stereoscopic feeling of the still image can be felt by the perspective but also two or more still images can be viewed.

1 is a perspective view showing a state of a lenticular lens and a projection surface.

In the lenticular lens plate 110, the circular cylindrical lenses 112 are arranged at intervals of the length L of the strings. In addition, the projection plane 122 on the projection plate 120 is bonded to the focal plane of the lenticular lens plate 110 and the graphics are embodied, and the scanning line array layer embodying the graphics 1100 in which different still images are combined. 1200 are positioned sequentially for each drained position of the length L of the string at different positions within the length L of the respective strings. When the user views the projection surface 122 through the lenticular lens plate, the graphics projected according to the angle of the gaze appear one by one.

The lenticular lens plate 110 is a well-known technique. The protrusion height of the circular arc portion is 0.1 to 2.0 mm, and the length L of the string is arranged on one side of the circular cylindrical lenses 112 of 01. to 6.0 mm. It is used to make the focus on the other side.

Projection plate 120 is printed on the projection surface 122 by representing the graphics in an array of scanning lines.

Here, as shown in FIG. 2, the scan line array layer 1200 refers to a scan line array in which one graphic is placed at multiple intervals of the length L of a string based on a specific position, respectively. Graphics form different scan line array layers 1200. To implement graphics with only one still image on the projection surface 122, the graphics are divided into several scanning lines so that each one scanning line is positioned at intervals of multiples of the length L of the strings, and then through the lenticular lens plate 110. Make sure the finished graphic is implemented when you see it.

In this way, in order to implement the graphic 1100 composed of several still images on one projection surface 122, the still images may be represented by arrays of scanning lines, respectively. That is, only one scan line of the scan lines of the still image is positioned within the length L of the string, and only one scan line is positioned among the scan lines of the other still image, but not overlapped with each other within the length L of the string. Position and the scanning line of another still image are also printed in the same manner to print the graphic 1100 on which the multiple still images are combined on the projection surface 122. When the projection surface 122 of the projection plate 120 is adhered to the focal plane of the lenticular lens plate 10 to see the projection surface 122 through the lenticular lens plate, the arcs are sequentially formed on the focal plane according to the position of the eye. The focal position of the cylindrical lens is moved along the projection surface 122 so that only one scan line of each gpice appears as the position of the line of sight changes. As an example of such a principle, when the two-dimensional graphics 1100 are implemented in FIG. 2 through the lenticular lens plate, as shown in FIGS. 3, 4, and 5 on one projection surface according to the angle of the eye, respectively. Different still images appear one by one in sequence.

Such a graphic projection apparatus using a lenticular lens can be used not only for a small picture frame, but also for advertisements such as cases of various items, small and medium sized signboards or large billboards.

However, conventional graphic projection apparatuses only realize perspective and stereoscopic sense of optical path difference and perspective of multiple still images due to visual difference, and the user looking at the graphic projection apparatus has to move his / her own body, so it is inconvenient to advertise. It also had a downside. Furthermore, since the composite images of a plurality of still images used in the conventional graphic projection apparatus must be matched to the angle of the lenticular lens, there is a problem in that image quality is deteriorated because a certain interval must exist between scan lines.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems and other problems of the conventional graphic projection apparatus and the composite image used therein, and an object thereof is to provide an image display apparatus which changes an image by itself without a user's movement.

Another object of the present invention is to provide an image display apparatus having a driving unit for moving a composite image vertically or horizontally.

It is still another object of the present invention to provide a method of dividing and synthesizing a plurality of image images such that the composite image does not have a gap regardless of the scanning line of the lenticular lens, and a method of displaying such image images.

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and an image display apparatus, a method of dividing and synthesizing the same horizontal direction of a plurality of video images that can be used in the image display apparatus, a display method of the video image, and a plurality of The splitting and compositing method for the same vertical direction of the video image, and the display method of the video image.

Hereinafter, an image display apparatus, a method of dividing and synthesizing a video image, and a display method according to the present invention will be described separately.

In one aspect of the present invention, a display apparatus according to the present invention records a lenticular lens plate having a plurality of lenticular lenses aligned at a predetermined width L, and a surface of a projection plate disposed on the back side of the lenticular lens plate. And a video image output through the plurality of lenticular lenses. The video image output to the naked eye of the user through the lenticular lens plate is a converted image in which a plurality of n images are repeatedly divided and synthesized in the same width d.

In the display device, the width d of each converted and synthesized transform image is smaller than the width L of each lenticular lens.

In the display device, the width d of each converted and synthesized transform image is equal to a numerical value obtained by dividing the width L of each lenticular lens by the number n of video images. .

The display apparatus may further include a driving unit which moves the video image in the vertical direction or the horizontal direction at a predetermined period by a distance of the width d of the converted image.

The display apparatus may further include a driver configured to move the image image in the vertical direction or the horizontal direction at a predetermined period by a distance of the width d of the converted image; An encoder for measuring the output of the driving unit; And a microprocessor for controlling the driving of the driving unit by measuring the operating state of the driving unit from the encoder. In the display apparatus, the driving unit includes a DC motor and a reduction gear coupled to the DC motor, and the DC motor is driven by a pulse width modulation signal input from a microprocessor.

The microprocessor outputs a forward pulse width modulation signal to the driving unit so that the video image is moved in the normal vertical direction or the horizontal direction by the distance d of the converted image. After receiving the number of times of moving in the direction, and after the moving distance of the video image is equal to the width (L) of the lenticular lens, the reverse pulse width modulation signal is output so that the video image is reversed by the distance (d) of the converted image. Characterized in that to be moved in the vertical direction or horizontal direction.

In one aspect of the present invention, a method of dividing and synthesizing a plurality of video images comprises: a dividing step in which a plurality of video images are equally divided into a predetermined number in the same horizontal direction; A compression step in which the divided images in the equally divided horizontal direction are compressed in the vertical direction as a single frame; And a combined step of sequentially compressing each divided image of the plurality of video images as a sub-frame, and sequentially inserting them within a vertical width of a single frame.

In the combining step of the method of dividing and synthesizing the plurality of video images, each compressed image of the plurality of video images is inserted once in the vertical width of a single frame.

The synthesizing step of the method of dividing and synthesizing the plurality of video images may be repeated for each of a plurality of single frames and converted into a single video image.

In the method of dividing and synthesizing the plurality of video images, after the synthesizing, the image converted into a single video image is extended in a horizontal or vertical direction at a uniform ratio.

A display method of a video image according to one aspect of the present invention is a method of displaying a video image divided and synthesized in the same horizontal direction, wherein a plurality of video images are equally divided into a predetermined number in the same horizontal direction, and the divided image is After being compressed in the vertical direction as a single frame, each compressed image that is compressed is sequentially inserted into the vertical width of the single frame as a subframe, and a single image image synthesized is vertical of the subframe on the back side of the plurality of lenticular lenses. It is characterized in that the vertical movement by the width.

In the display method of the video image, the width L of each lenticular lens is equal to the width of a single frame.

In the display method of the video image, the width d of each sub-frame divided and synthesized in the video image is equal to the numerical value divided by the number n of the video images of the width L of each lenticular lens. It features.

In the display method of the video image, the vertical movement of the video image is made in units of subframes, and when the movement of the subframe reaches the limit of the vertical width of the single frame by the vertical movement, the vertical movement is performed in the opposite direction. Of course, not only the limit (F) of the vertical width of a single frame but also two or three frames may be moved vertically and then moved in the opposite direction again.

The converted image by one side of the present invention is a converted image synthesized by dividing in the same horizontal direction, wherein a plurality of video images are equally divided into a predetermined number in the same horizontal direction, and the divided image is compressed in a vertical direction as a single frame. Then, each compressed image that is compressed is sequentially inserted into the vertical width of a single frame as a subframe and synthesized.

The converted image is vertically moved by the vertical width of the subframe on the rear side of the lenticular lens.

In one aspect of the present invention, a method of dividing and synthesizing a plurality of video images is a method of dividing and synthesizing a plurality of video images with respect to the same vertical direction. step; A compression step in which the evenly divided vertically divided images are compressed in the horizontal direction as a single frame; And a combined step of sequentially compressing each divided image of the plurality of video images as a sub-frame, sequentially inserted within a horizontal width of a single frame.

The method for dividing and synthesizing the plurality of video images may include inserting each compressed image of the plurality of video images into the horizontal width of a single frame once in the combining step.

In the method of dividing and synthesizing the plurality of video images, the synthesizing step is repeated for each of a plurality of single frames and converted into a single video image.

The method of dividing and synthesizing the plurality of video images is characterized in that, after the combining step, the image converted into a single video image is expanded at a uniform ratio in a horizontal or vertical direction.

According to an aspect of the present invention, a method of displaying a video image is a method of displaying a video image that is divided and synthesized in the same vertical direction, wherein the plurality of video images are equally divided into a predetermined number in the same vertical direction, and the divided images are single. After being compressed in the horizontal direction as a frame, each compressed image that is compressed is sequentially inserted into the horizontal width of a single frame as a subframe, and a single image image synthesized is horizontally aligned by the horizontal width of the subframe on the back side of the lenticular lens. It is characterized in that it is moved.

The display method of the video image is characterized in that the width L of each lenticular lens is equal to the width of a single frame.

In the display method of the video image, the width (d) of each subframe divided and synthesized in the video image is equal to the numerical value obtained by dividing the width (L) of each lenticular lens by the number (n) of the video images. It features.

In the display method of the video image, the horizontal movement of the video image is made in units of subframes, and when the subframe reaches the limit of the horizontal width of the single frame by the horizontal movement, the horizontal movement is made in the opposite direction. do. Of course, as well as the limit (F) of the horizontal width of a single frame it can also be moved horizontally by two or three frames and then back in the opposite direction.

The converted image by one side of the present invention is a converted image synthesized by dividing in the same vertical direction, wherein a plurality of video images are equally divided into a predetermined number in the same vertical direction, and the divided image is compressed in a horizontal direction as a single frame. Thereafter, each of the compressed divided images is sequentially inserted into the horizontal width of the single frame as a subframe and synthesized.

The converted image is horizontally moved by the horizontal width of the subframe on the rear side of the lenticular lens.

Description of Most Preferred Embodiments

Hereinafter, each aspect of the present invention will be described in more detail with reference to the accompanying drawings.

I. Image Display Device

FIG. 6 is a perspective view of an image display apparatus according to the present invention, FIG. 7 is a three-dimensional perspective view illustrating a state in which an image image is vertically moved by a distance d of a width (or subframe) of a converted image by a driving unit, and FIG. 8. Is a schematic block diagram for the drive unit.

In a preferred embodiment, the size of the image display device is based on the size of about A4 notes, but there is no limitation in the size of the display device in the present invention, it can be applied to the fact that it can be applied to a small display device as well as a large display board for advertising Be careful.

The display apparatus 10 includes a lenticular lens plate 11 in which a plurality of lenticular lenses 12 are aligned at a predetermined width L, and a projection plate 15 arranged on the rear side of the lenticular lens plate 11. It includes a video image 20 recorded on the surface.

The video image 20 is output through the plurality of lenticular lenses 12. The video image 20 output to the naked eye of the user through the plurality of lenticular lenses 12 is a converted image 20 in which a plurality of n images are repeatedly divided and synthesized in the same width d. The display apparatus further includes a driver 50 for moving the video image in the vertical direction or the horizontal direction at a predetermined period by the distance d of the converted image 20.

The display device 50 includes an encoder 54 for measuring the output of the driver 50; It further includes a microprocessor 51 for measuring the operating state of the drive unit from the encoder 54 to control the driving of the drive unit. In addition, the driving unit 50 includes a DC motor 52 and a reduction gear 53 coupled to the DC motor 52, and the DC motor 52 includes a pulse width modulation signal input from the microprocessor 51 ( Driven by PWM1, PWM2).

In addition, the microprocessor 51 outputs the forward rotation pulse width modulation signal PWM1 to the DC motor 52 so that the video image 20 moves in the normal vertical direction or the horizontal direction by the distance d of the converted image. Be sure to

The encoder 54 serves to feed back the microprocessor 51 by counting the rotational speed of the DC motor 52 or the number of movements of the video image 20.

The microprocessor 51 receives the number of times of moving the image image 20 in the vertical direction or the horizontal direction from the encoder 54, so that the moving distance of the image image 20 is equal to the width L of the lenticular lens. Afterwards, the reverse rotation pulse width modulation signal PWM2 is output so that the video image is moved in the reverse vertical direction or the horizontal direction by the distance d of the converted image.

FIG. 7 shows, in one embodiment, that d is the distance (or the width of the subframe) of the unit of each image that is partly synthesized through the reduction gear 53 when the DC motor 52 rotates. It shows the vertical movement. Although this embodiment shows the image 20 moving vertically, it should be noted that the image 20 may move horizontally. The video image 20 moves in the vertical direction or the horizontal direction by a predetermined distance in units of the distance d of the converted image, and then moves in the reverse direction again. This process may be repeated.

The driver 50 is located at the lower end and the rear side of the display apparatus 10. The lower end may be equipped with a battery for supplying power to the driving unit.

It is preferable that the width d of each transformed and synthesized transformed image is smaller than the width L of each lenticular lens. The width d of each of the divided and synthesized converted images is preferably equal to the numerical value obtained by dividing the width L of each lenticular lens by the number n of video images.

In one embodiment, when the width L of the lenticular lens is 1.2 mm and the total number of images to be divided and synthesized is three, the width d of each converted image is preferably set to 0.4 mm. . In this case, when the microprocessor signals the movement of 0.4 mm with respect to the drive motor in an instant, the output image is changed instantaneously (first mode). If the microprocessor commands the drive motor to move 0.4mm slowly at small intervals, the microprocessor may gradually change from the first image to the second image with the afterimage effect of the changing image.

II.Segmentation, composition and display of multiple video images in the same horizontal direction

II-1. Segmentation and Synthesis of Multiple Image Images in the Same Horizontal Direction

9 is a conceptual diagram illustrating a method of dividing and synthesizing three single images by a single frame in the same horizontal direction, and FIG. 10 is a flowchart illustrating a method of dividing and synthesizing three image images.

First, three video images I1, I2, and I3 are equally divided in the same horizontal direction (S10). In this case, each width of each divided image is defined as a width F of a single frame.

Subsequently, the evenly divided divided image in the horizontal direction is compressed in the vertical direction as a single frame (S20). Each compressed image of the plurality of video images is inserted as a sub frame and sequentially inserted into the vertical width of the single frame to be synthesized (S30). If the sequential insertion is repeated for every single frame, the "conversion image 20" is finally completed (S40).

In the combining step S30, each compressed image of the three video images is inserted once in the vertical width F of a single frame. That is, it is preferable that the divided subframes of each of the three images are inserted once in the vertical width F of the single frame.

Then, the synthesis step is repeated for all single frames to complete a single video image converted (S40).

In the method of dividing and synthesizing the plurality of video images, after the synthesizing, the image 20 converted into a single video image may be extended at a uniform ratio in a horizontal or vertical direction. This may be necessary in the process of adapting to the size change of the display apparatus 10.

II-2. Display method of video images divided and synthesized in the same horizontal direction

FIG. 11 is a conceptual diagram illustrating a state in which three single images are divided and synthesized by a single frame in the same horizontal direction and displayed on the display apparatus 10.

After the plurality of video images I1, I2, and I3 are equally divided in a constant number in the same horizontal direction, the divided images are compressed in a vertical direction as a single frame, and then each compressed image is compressed as a subframe. The single transformed image 20 sequentially inserted and synthesized in the vertical width F is vertically moved by the vertical width d of the subframe on the back side of the plurality of lenticular lenses 12.

The width L of each lenticular lens is preferably equal to the width F of a single frame. In other words,

L = F

In addition, it is preferable that the width d of each sub-frame divided and synthesized of the image image is equal to the numerical value obtained by dividing the width L of each lenticular lens by the number n of the image image. In other words,

d = L / n

On the other hand, the vertical movement of the converted image 20 is made in sub-frame units (d). When the movement of the subframe reaches the limit F of the vertical width of the single frame by the vertical movement, the vertical movement is performed in the opposite direction. It is preferable. Of course, not only the limit (F) of the vertical width of a single frame but also two or three frames may be moved vertically and then moved in the opposite direction again.

II-3. Converted image split and synthesized in the same horizontal direction

The converted image 20 of FIG. 9 is a converted image synthesized by dividing in the same horizontal direction, and the plurality of video images I1, I2, and I3 are equally divided into a predetermined number in the same horizontal direction, and the divided image is a single frame. After compression in the vertical direction, the respective compressed images are sequentially inserted into the vertical width F of the single frame as a subframe and synthesized.

The converted image 20 is preferably vertically moved by the vertical width d of the sub-frame on the rear side of the lenticular lens.

III.Segmentation, composition and display of multiple video images in the same vertical direction

III-1. Segmentation and Synthesis of Multiple Image Images for the Same Vertical Direction

9 illustrates a method of dividing and synthesizing three single images into a single frame in the same horizontal direction, but the principle is not only applied to division in the same horizontal direction, but also to division in the same vertical direction. Apply.

FIG. 10 is a flowchart showing a method of dividing and synthesizing three video images, which is similarly applied to the following embodiments.

First, three video images I1, I2, and I3 are equally divided in the same vertical direction (S10). In this case, each width of each divided image is defined as a width F of a single frame.

Subsequently, the evenly divided vertically divided image is compressed as a single frame in the horizontal direction (S20). Each compressed image of the plurality of video images is inserted as a sub-frame and sequentially inserted into the horizontal width of the single frame and synthesized (S30). If the sequential insertion is repeated for every single frame, the "conversion image 20" is finally completed (S40).

Then, in the combining step S30, each compressed image of the plurality of video images is inserted once in the horizontal width of the single frame. Then, the synthesis step is repeated for all single frames to complete a single video image converted (S40).

In the method of dividing and synthesizing the plurality of video images, the synthesizing step is repeated for each of a plurality of single frames and converted into a single video image.

In addition, in the method of dividing and synthesizing the plurality of video images, after the synthesizing, the image 20 converted into a single video image may be expanded at a uniform ratio in a horizontal or vertical direction. This may be necessary in the process of adapting to the size change of the display apparatus 10.

III-2. Display method of video images divided and synthesized in the same vertical direction

FIG. 11 is a conceptual diagram illustrating a display in the display apparatus 10 in which three single images are divided and synthesized in a single frame in the same horizontal direction, but three single images are divided in a single frame in the same vertical direction. The same can be said for what has been done.

That is, for example, three video images I1, I2, and I3 are equally divided in a constant number in the same vertical direction, and the divided images are compressed in a horizontal direction as a single frame, and then each compressed image is compressed as a subframe. The single video image 20 sequentially inserted and synthesized in the horizontal width F of the single frame is horizontally moved by the horizontal width d of the sub-frame on the back side of the lenticular lens 12.

The width L of each lenticular lens is preferably equal to the width F of a single frame. In other words,

It is preferable that L = F as in Equation 1 above.

The width d of each sub-frame divided and synthesized of the image image is equal to a numerical value obtained by dividing the width L of each lenticular lens by the number n of the image image. In other words,

As in Equation 2, d = L / n is preferred.

On the other hand, the horizontal movement of the converted image 20 is made in subframe units (d). When the subframe reaches the limit F of the horizontal width of a single frame by the horizontal movement, the horizontal movement is performed in the opposite direction. desirable. Of course, not only the limit (F) of the horizontal width of a single frame but also two or three frames may be moved vertically and then moved in the opposite direction again.

III-3. Converted image split and synthesized in the same vertical direction

The converted image 20 of FIG. 9 is for a converted image that is divided and synthesized in the same horizontal direction, but the same may be applied to the case where the converted image 20 is divided and synthesized in the same vertical direction.

That is, the plurality of video images I1, I2, and I3 are equally divided in a certain number in the same vertical direction, and the divided images are compressed in the horizontal direction as a single frame, and then each compressed image is compressed as a subframe. It can be inserted into the horizontal width (F) of the frame sequentially and synthesized.

The converted image 20 is preferably horizontally moved by the horizontal width d of the subframe on the rear side of the lenticular lens.

So far, the present invention has been described with reference to the most preferred embodiments, but the above embodiments are only for better understanding of the present invention, and the contents of the present invention are not limited thereto. For example, in the above embodiment, only three of the plurality of video images before conversion are exemplified, but the number of the video images is four or more, so it is within the scope of the present invention. That is, even if there are additions, reductions, changes, modifications, and the like of some components of the composition of the present invention, it falls within the scope of the present invention as long as it belongs to the technical idea of the present invention defined by the appended claims.

According to the image display apparatus and the image segmentation, composition, and display method according to the present invention, it is possible to provide an image display apparatus which changes an image by itself without a user's movement, thereby producing a promotional material having an excellent advertising effect.

In addition, each user can easily synthesize a plurality of pictures using a computer, anyone can be easily mounted on the image display device, it can be a popular advertisement delivery device.

Claims (27)

delete delete delete delete A plurality of lenticular lenses comprising a lenticular lens plate arranged at a predetermined width L, and an image image recorded on a surface of a projection plate disposed on the rear side of the lenticular lens plate, and through the plurality of lenticular lenses In a display device that outputs a video image, The video image is a converted image in which a plurality (n) of images are repeatedly divided and synthesized in the same width (d), A driving unit which moves the video image in a vertical direction or a horizontal direction at a predetermined period by a distance of the width d of the converted image; An encoder measuring an output of the driver; And And a microprocessor for controlling the driving of the driving unit by measuring an operating state of the driving unit from the encoder. The method of claim 5, The driving unit includes a DC motor and a reduction gear coupled to the DC motor, And the direct current motor is driven by a pulse width modulated signal input from the microprocessor. The method according to claim 5 or 6, The microprocessor outputs a forward pulse width modulation signal to the driving unit so that the video image is moved in the normal vertical direction or the horizontal direction by the distance d of the converted image, The microprocessor receives the number of shifts in the vertical or horizontal direction of the video image from the encoder, and after the moving distance of the video image becomes equal to the width L of the lenticular lens, reverse pulse width modulation is performed. And outputting a signal to move the video image in a reverse vertical direction or a horizontal direction by a distance of the width d of the converted image. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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