JPH07264507A - Wide aspect television display - Google Patents

Abstract

(57) [Abstract] [Purpose] To save the labor of operation and display images with various aspect ratios on a screen with an aspect ratio of 16: 9 at the optimum vertical size and display position. [Structure] A video signal input from an input terminal 1 is processed by a clamp circuit 6 and a filter 8, and then a binarization circuit 1
It is supplied to 0 and is binarized depending on the presence or absence of a video portion for each line, and its aspect ratio is determined. When the aspect ratio is other than 4: 3, the video start / end line detection circuit detects the timing of the first line and the timing of the last line including the video portion for each field, and the count value of the counter 12 at these timings. Are latched by the latch circuit 13, and the vertical width of the image is obtained by the arithmetic circuit 14 from these latched count values. The control circuit 4 controls the deflection circuit 5 based on this vertical width and the determination result of the binarization circuit 10, and the vertical size at which the image on the screen is optimal,
Display at the display position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wide aspect television display device for converting and displaying an image aspect ratio.

[0002]

2. Description of the Related Art In recent years, the aspect ratio of a television screen has been set to 16: 9, and a high-quality video signal for high-definition broadcasting or the like has been converted into a conventional NTSC video signal (hereinafter referred to as NTSC).
Signal) and display the image with this NTSC signal so that you can easily see high-definition television images or display the image of conventional NTSC signals by changing its aspect ratio. , A so-called wide aspect television display device has been commercialized, which is a television display device that can be viewed as a powerful television image.

In such a wide aspect television display device, an image which is displayed in the aspect ratio of 4: 3 or which has a black non-image portion at the upper and lower portions of the image, such as movie software, is displayed vertically. By enlarging the image, it is converted into an image having an aspect ratio of 16: 9, which is the same as the television screen, and is displayed.

By the way, in software such as movies, not only those with an aspect ratio of 16: 9 called Vista size, but also those with an aspect ratio of 21: 9 called Sinesco size and subtitles are added to the non-video part. However, if software is to be displayed on the wide aspect television display device described above, not all software can be displayed exactly on a television screen having an aspect ratio of 16: 9. When these softwares are displayed, a part of the video image is projected from the television screen and a missing part that cannot be displayed is generated, or many non-video parts with no video image are displayed in the upper and lower parts of the television screen.

Therefore, even for such a video signal of software, the aspect ratio is not limited to 16: 9 so that the video can be displayed in a more optimal display size. For example, you can prepare several types on the TV display device side, and select the magnification ratio mode that the user thinks is optimal, or adjust the display size to the optimum size by using the function that allows the user to select an appropriate magnification ratio. It is known that it is possible to do. Further, as described in Japanese Patent Laid-Open No. 4-322574, for example, in the case of a video signal representing a video in which a subtitle is added to a non-video portion, the subtitle portion is once extracted and the video portion is displayed in an optimum display size. After adjusting to, the subtitle portion is superimposed on the video portion so that the subtitle can be displayed without being missing.

[0006]

However, the aspect ratio of the movie software, which is said to be the same as Cinesco or Vista size, is not strictly 21: 9 or 16: 9, and the subtitles are included in the video. When the subtitle position in the original video signal is different due to a non-video portion, various enlargement ratio modes are required to adjust the video portion to the optimum display size. The television display device can be switched to several sizes in order to support these software, but to switch to the optimal display size mode, press the mode button many times. You have to do something,
Since there are various vertical positions of the image on the television screen, it is necessary to adjust the vertical position. As described above, there is a problem that complicated operations are required to display an image in an optimal display size and an optimal screen position.

Hereinafter, this point will be described with reference to FIG. FIG. 2A shows a case where an image having an aspect ratio different from 4: 3 such as a movie is displayed on a conventional television screen having an aspect ratio of 4: 3. It shows that a certain non-video part is displayed.

FIG. 2 (b) shows an example of displaying an image with an aspect ratio of 4: 3 on a television screen with an aspect ratio of 16: 9, and 1) shows an aspect ratio of 4: 3.
Is displayed by adjusting its vertical width to the vertical width of the television screen. In order to display such an image more optimally, first, as shown in 2), a mode of a size considered to be optimal for display is selected from several modes, and then, as shown in 3), a vertical position is selected. Adjust so that there are no missing images.

In this way, the optimum mode and display position can be adjusted, but when displaying software other than this,
There is no guarantee that the same mode and display position as this will do.
Generally, it is necessary to adjust each displayed software. Therefore, even though the optimum mode can be set, since a cumbersome operation is required for this, the general user does not perform such an operation, and the general mode set first is set. In many cases, they are reluctant to display it.

An object of the present invention is to eliminate such a problem and to eliminate a troublesome operation and to display a wide aspect television display operation capable of displaying an image having an arbitrary aspect ratio at an optimum display size and display position. To provide.

[0011]

In order to achieve the above object, the present invention provides means for detecting an aspect ratio of an input image, a vertical width of the image and a position of the image when the aspect ratio is other than 4: 3. The detection means and the means for calculating the optimum display position and display size from the detected information and controlling the deflection circuit based on the information.

[0012]

The means for detecting the vertical width and position of the image compares the image signal with a certain level, and if there is a signal larger than that level, it is judged that the line (scanning line) has the image portion. Judges that there is no video part and there is no video part. Then, the start line and the end line of the video are detected, the display size on the television screen is obtained from the difference in the vertical width of the video, and the television screen in the currently displayed vertical size mode. Since the display range of can be known in advance, by comparing it with the vertical position of the input image, it can be seen whether the image can be displayed on the television screen, and from the difference between the center of the image and the center of the television screen, the vertical By obtaining the amount of movement in the direction and controlling the deflection circuit, it is possible to display an image at an optimal display position with an optimal display size.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a wide aspect television display device according to the present invention, in which 1 is a video signal input terminal, 2 is a video position detection circuit, 3 is a video width detection circuit, and 4 is a control circuit. 5 is a deflection circuit, 6 is a clamp circuit, 7 is a sync separation circuit, 8 is a filter, 9 is a pulse generation circuit, 10 is a binarization circuit, 11 is a video start / end line detection circuit, 12 is a vertical counter, and 13 is Latch circuit, 1
Reference numeral 4 is an arithmetic circuit.

In FIG. 1, the video signal input from the input terminal 1 is supplied to the video position detection circuit 2. The video position detection circuit 2 is composed of a clamp circuit 6, a sync separation circuit 7, a filter 8, a pulse generation circuit 9, a binarization circuit 10 and a video start / end line detection circuit 11, where:
The video start line and the end line of the input video signal are detected for each field.

That is, the input video signal is supplied to the sync separation circuit 7 to separate the horizontal sync signal and the vertical sync signal, these sync signals are supplied to the pulse generation circuit 9, and the clamp pulse A is supplied for each line. Further, the gate pulse B, the vertical timing pulse D, and the clock C having a cycle equal to the line cycle of the input video signal are generated for each field.

Further, the input video signal is supplied to the clamp circuit 6 and is clamped by the clamp pulse A from the pulse generation circuit 9 so that the pedestal level becomes a constant level. Is removed and is supplied to the binarization circuit 10.

In the binarization circuit 10, first, a period other than the vertical blanking period is extracted by the gate pulse B supplied from the pulse generation circuit 9. This is performed in order to remove the test signal and the like existing within the vertical blanking period.
Thereafter, the video signal is level-compared with a preset first threshold value and binarized by distinguishing a video portion with a video and a non-video portion without a video for each line. Then, it is detected whether the aspect ratio of the video of the supplied video signal is 4: 3 or other. As the detecting means, the obtained binarized signal is level-compared with a second threshold value set in advance, and when the aspect ratio is other than 4: 3, the upper and lower parts of the television screen which are usually the non-video part are displayed. When the presence / absence of an image in a specific scan line range is detected and it is detected that there is an image in at least one of the scan line ranges, it is determined that the image signal has an aspect ratio of 4: 3 regardless of the image width. However, when there is no image in any scanning line range, it is determined that the image signal has an aspect ratio other than 4: 3. This determination result is supplied to the video start / end end line detection circuit 11 and the control circuit 4. It should be noted that the first threshold value is set to such a value that an image of a dark scene can be reliably detected. Therefore, the first threshold and the second
Does not necessarily match the threshold of.

In the video start / end end line detection circuit 11,
When the determination result and the binarized signal are supplied from the binarization circuit 10 and the binarization circuit 10 determines that the video signal has an aspect ratio other than 4: 3, the video of the video signal is generated for each field. The first line including the portion (video start line) and the last line including the video portion (video end line) are detected, and the video start line signal and the video end line signal are output at respective timings.

FIG. 3 is a block diagram showing a specific example of the video start / end line detection circuit 11, 15 is a set-reset type flip-flop circuit (hereinafter referred to as SRFF), and 16 is a monostable multivibrator. (Hereinafter referred to as mono-multi), 17 is a one-line delay circuit, 18 and 19 are AND gates, and 20 is SR-FF.

FIG. 4 is a timing chart showing the signals of the respective parts in FIG. 3, and the signals corresponding to FIG. 3 are assigned the same reference numerals.

3 and 4, the SR-FF 15
Is set by the rising edge of the binarized signal b from the binarization circuit 10 (FIG. 1) and reset by the reset pulse a which is phase-synchronized with the period equal to the horizontal sync signal. Therefore, as the Q output of this SR-FF15,
The signal c is "H" (high level) from the rising edge of the video portion to the next reset pulse a. Such a signal c cannot be obtained in a line composed of a non-video part. Monomulti 16 is triggered on the falling edge of such signal c,
A pulse d having a constant width is obtained from this falling edge. This pulse d is supplied to the AND gate 18, and
It is inverted and supplied to the AND gate 19. Further, the output pulse d of the monomulti 16 is set to 1 by the 1-line delay circuit 17.
This delay pulse e is delayed by the line and the AND gate 1
9 is supplied and inverted to the AND gate 18
Is supplied to.

Therefore, the AND gate 18 outputs the pulse f when the pulse d is supplied only from the monomulti 16. This pulse f is the first pulse of the series of pulses d output from the monomulti 16 and is caused by the line containing the first video portion in one field. Therefore, this pulse f is used as the above-mentioned video start line signal.

The SR FF 20 is set by the vertical timing pulse D and reset by the pulse f. The Q output of the SR FF 20 is supplied to the AND gate 18. As a result, even if there is a line consisting of a non-image part in the middle of the image and the pulse d is again output from the monomulti 16 in the line consisting of the image part following this line, the "L" ( Low level)
The Q output of the AND gate 18 prevents the AND gate 18. Therefore, in each field, the video start line signal f is obtained only for the line consisting of the first video portion.

Further, when the pulse e is supplied from the AND gate 19 only from the one-line delay circuit 17, the pulse g is output. This pulse g is one line behind the last pulse of the series of pulses d output from the monomulti 16, and one line behind the line including the last video portion in one field. Therefore, this pulse g is used as the video end line signal.

Even if there is a line consisting of a non-picture part in the middle of the picture, the pulse g is obtained from the AND gate 19 one line later than the line consisting of the picture part immediately before this line. That is, a plurality of video end line signals g may be obtained in one field. However, as will be described later, the video start line signal f and the video end line signal g are not included in the vertical counter 12 in FIG.
Is used as a latch pulse of the latch circuit 13 for latching the count value of, and even if a plurality of video end line signals are latched, the count value latched by the last video end line signal in the field is used. Therefore, even if a plurality of video end line signals are generated in one field, it does not cause any problems. On the other hand, a plurality of video start line signals f should not occur. For this reason, SR
The FF 20 is provided so that only the first pulse f can be obtained.

As a result, even if there is a part which is detected as a non-video part because it is dark on the television screen, the lower part of the television screen can be detected and the video start line and the video end line can be detected without any problem. it can.

Returning to FIG. 1, the video width detection circuit 3 is composed of a vertical counter 12, a latch circuit 13 and an arithmetic circuit 14, and outputs a video start line signal and a video end line signal supplied from the video position detection circuit 2. The vertical width of the video of the input video signal is detected by using this.

That is, the vertical counter 12 starts counting the clock C synchronized with the horizontal synchronizing signal of the input video signal supplied from the pulse generating circuit 9 for each vertical timing pulse D supplied from the pulse generating circuit 9. Latch circuit 1
A latch circuit 3 latches the count value of the vertical counter 12 by the video start line signal from the video start / end line detection circuit 11 and the count value of the vertical counter 12 by the video end line signal from the video start / end line detection circuit 11. It is composed of a latch circuit. Arithmetic circuit 14
At the timing of the vertical timing pulse D generated by the pulse generation circuit 9, the count values latched in these latch circuits are taken in as the video start line value and the end line value, respectively, and the difference between them is calculated and expressed by the number of lines. The vertical width of the image is calculated, and each is added up to 1/2
By multiplying, the vertical center line of the image is obtained. The information on the vertical center line and the vertical width of the image thus obtained is supplied to the control circuit 4.

The control circuit 4 uses the deflection circuit so that when the binarization circuit 10 determines that the aspect ratio of the image is 4: 3, the display deflection of the normal aspect ratio of 16: 9 is performed on the television screen. 5 to supply a control signal. As a result, an image having an aspect ratio of 4: 3 is displayed on this television screen as shown in FIG. 2 (b) 1). When the binarization circuit 10 determines that the aspect ratio of the image is other than 4: 3, first, the optimum display size of the image on the television screen is obtained from the vertical width information obtained by the arithmetic circuit 14. , And outputs a size control signal corresponding to the display size to the deflection circuit 5. Next, the difference between the center line on the television screen and the center line of the image is calculated, and a vertical position movement control signal is output to the deflection circuit 5 so that the center line of the image is displayed in the center of the television screen. . As a result, for example, in the case of a video in which a subtitle is added to a non-video part, the video including the subtitle has an optimal display size and an optimal display position as shown in FIG.
In other words, a part of the image is displayed so as not to run off the television screen and be cut off, and the black non-image portion is displayed so as not to appear on the television screen as much as possible.

In this way, regardless of the aspect ratio,
The video will be displayed in the optimum position on the television screen with the optimum display size.

FIG. 5 is a block diagram showing another embodiment of the wide aspect television display device according to the present invention, in which 21 is a setting button, 22 is a microcomputer (hereinafter referred to as a microcomputer), and corresponds to FIG. The same reference numerals are given to the portions to be described, and the duplicated description will be omitted.

In the figure, when the setting button 21 is operated, the microcomputer 22 operates the video start / end line detection circuit 11, the video width detection circuit 3 and the control circuit 4 in FIG. The operation of the microcomputer 22 is shown in FIG.

In FIG. 6, when the setting button 21 is operated, the same operation as the operation of the binarization circuit 10 in FIG. 1 is performed in step 601, and the video start / end line in FIG. 1 is performed in steps 603 and 604. Operations similar to those of the detection circuit 11 and the image width detection circuit 3 are performed. After step 604, the process proceeds to step 605, where it is determined whether the optimum display size or display position has already been set, and if it is the first setting, such setting is made (step 60).
6) Once such setting is made, the set display size and display position are maintained as optimum unless the size of the image to be displayed in the vertical direction is further increased (step). 607).

Now, with the above settings, for example, it is assumed that a video without subtitles is displayed on the television screen in an optimal display size and display position, and then the subtitles are displayed in the black non-video portion below the video. If a video signal of such a video is supplied, the subtitle portion is determined to be a video in steps 603 and 604, and the vertical size of the video to be displayed is increased. Therefore, in this case, the process proceeds from step 607 to step 608, the optimum display size and display position are set for the video, and the television screen is displayed accordingly.

According to this, in the previously set display size and display position, the image with the above subtitles is displayed in FIG. 2 (b).
The display shown in 2) is shown in FIG. 2 (b) 3).
It will be optimally displayed as shown in. After that, the image is displayed at this display size and display position unless it is necessary to display the image having a larger vertical size.

By the way, in the embodiment described with reference to FIG. 1, since the aspect ratio of the image is always detected and the image is displayed with the optimum display size, it is displayed every time the aspect ratio of the image signal changes. The size of the image can be switched. In such a case, for example, in the case of a video in which the subtitles of a movie appear or disappear in a non-video part, the size of the video displayed each time changes, which is annoying. Therefore, in this embodiment, when the setting button 21 is operated as described above, the operation as described above is performed to prevent such an annoying switching of the image size.

This will be described with reference to FIG. 9. The setting button 21
When is pressed, the image displayed such that the upper and lower parts of the television screen become the non-video part as shown in FIG. 7A, the non-video part is displayed as shown in FIG. 7B. Will be displayed with the optimum display size and position so that After that, when the video has subtitles in the non-video part, the display size as it is is as shown in FIG.
As shown in FIG. 7, the subtitles are not displayed, but the display size and the display position are switched by the process of step 608 in FIG. 6, and as shown in FIG. 7D, the subtitles are optimally displayed including the subtitles. It becomes a video. In this case, the video other than the subtitle part will be displayed somewhat smaller. After that, when the subtitles disappear, the number of lines in the video portion of the video signal decreases and the aspect ratio changes, but the set display size and display position cannot be switched, and as shown in FIG. An image in which the non-image part is visible is displayed at the bottom of the John screen. However, the size of the displayed image does not change, and there is no obstruction.

By the way, in the embodiment described above, when the video of the video signal including the subtitle in the non-video portion is displayed on the full television screen, the subtitle is displayed on the lower side of the television screen as shown in FIG. 9A. Since it is displayed as close as possible, the subtitles may be missing due to high-voltage fluctuations due to changes in video brightness. FIG. 8 is a block diagram showing still another embodiment of the wide aspect television display device according to the present invention, in which such a problem is solved. Reference numeral 23 is a binarization circuit, and parts corresponding to those in FIG. And redundant description will be omitted.

This embodiment detects the presence / absence of a subtitle in a non-video portion, and if there is a subtitle, as shown in FIG. 9B,
The display position on the lower side is shifted so that subtitles are not applied to the lower side of the television screen.

In FIG. 8, the binarizing circuit 23 is supplied with the video signal output from the filter 8 and the gate pulse E generated by the pulse generating circuit 9. The binarization circuit 23 detects whether or not there is a caption in the non-video portion of the video signal by the gate pulse E, and the microcomputer 22 determines the video display position on the television screen according to the detection result. And set the display size.

The operation will be described below with reference to FIG. FIG. 10A shows one line period, and FIG. 10A shows one field period.

In FIG. 10A, (a) shows a line made up of a video portion, and (b) shows a line made up of a subtitle portion. As is clear by comparing these lines, in the line consisting of the video part, this video part covers almost the entire line, whereas in the line consisting of the subtitle part, this subtitle part is at the beginning and end of the line. Does not exist. (C) shows a normal image detection range,
(D) shows a range in which subtitles cannot exist in this video detection range. Therefore, by using the signal shown in (d) as the gate pulse E, it is possible to detect whether or not there is a caption signal in the non-video portion of the video signal.

Further, in FIG. 10A, (e) shows a video signal when there is a subtitle in the non-video portion. That is, the non-video portion is at the end portion of one field, and the subtitle portion is added here. (F) is shown in FIG.
It is a binarized signal obtained by binarizing the video signal in the video detection range of (c), and as described above, the binarization circuit 1
Obtained by 0. This binarized signal is supplied to the microcomputer 22, and as described above, the video start line signal shown in (g) and the video end line signal shown in (h) are obtained. The video end line signal in this case represents the timing of the line including the last subtitle portion. On the other hand, the binarization circuit 23 extracts the video signal in the caption detection range of FIGS. 10A and 10D and binarizes the extracted portion to obtain the binarized signal shown in FIG. This binary signal contains
It does not include the subtitle part in the non-video part at the end of the field. Such a binarized signal is supplied to the microcomputer 22, and a video end line signal as shown in (j) is detected. Then, the microcomputer 22 compares the timing of the video end line signal shown in (h) with the timing of the video end line signal shown in (j), determines that there is no caption in the non-video portion when they match, and does not match. Sometimes it is determined that there is subtitle in the non-video part. Then, when it is determined that there is a subtitle in the non-video portion, the optimum display size is made slightly smaller than that when there is no subtitle, and the display position is adjusted slightly upward, so that the display shown in FIG. 9B is performed. To do so.

FIG. 11 shows each part in the video, and (a) shows the video part and the subtitle part in the vertical direction.
(A) is also the video part, (C) is also the subtitle part, the timing of the video end line signal when there is no subtitle is the lower edge of (A), the video end line signal when there is a subtitle The timing is the lower edge of (C).

[0045]

As described above, according to the present invention,
Since the vertical width and position of the video can be detected, the optimum display size and display position of the video on the television screen can be grasped, and by controlling the deflection circuit using this data, complicated operations can be performed. It is possible to display an image in a mode of an optimum display size and a vertical display position according to a vertical instruction or position of an input image without performing the operation.

Further, according to the present invention, such mode switching is not always performed, but is performed only when the switching button is pressed and the subtitle is displayed to widen the video width. The mode is not switched many times in a short time, and the mode is maintained stably.

Further, according to the present invention, in a video in which a subtitle is displayed in a non-video portion, the subtitle is displayed with its display position shifted, so that the subtitle is not lost.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a wide aspect television display device according to the present invention.

FIG. 2 is a diagram for explaining a procedure of adjusting a display image in a conventional wide aspect television display device.

3 is a block diagram showing a specific example of a video start / end line detection circuit in FIG.

FIG. 4 is a timing chart showing signals of respective parts of FIG.

FIG. 5 is a block diagram showing another embodiment of the wide aspect television display device according to the present invention.

FIG. 6 is a flowchart showing the operation of the microcomputer shown in FIG.

FIG. 7 is a diagram showing a change in a display image due to an operation of the microcomputer shown in FIG.

FIG. 8 is a block diagram showing still another embodiment of the wide aspect television display device according to the present invention.

9 is a diagram showing a subtitle position adjusting operation of the embodiment shown in FIG.

10 is a waveform diagram showing a signal during a caption detection operation in the embodiment shown in FIG.

11 is a waveform diagram for explaining the caption detection operation of the embodiment shown in FIG.

[Description of symbols] 1 video signal input terminal 2 video position detection circuit 3 video width detection circuit 4 control circuit 5 deflection circuit 6 clamp circuit 7 sync separation circuit 8 filter 9 pulse generation circuit 10 binarization circuit 11 video start / end line Detection circuit 12 Vertical counter 13 Latch circuit 14 Arithmetic circuit 21 Setting button 22 Microcomputer 23 Binarization circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyo Fushimi 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture AV equipment division, Hitachi, Ltd. (72) Takaaki Nishiseto 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Address Company, Hitachi Ltd. AV Equipment Division (72) Inventor Hideo Tomita 292, Yoshida-cho, Totsuka-ku, Yokohama City, Kanagawa Prefecture Hitachi Corporation AV Equipment Division

Claims (5)

[Claims] 1. In a wide aspect television display device in which the aspect ratio of the television screen for displaying the image of the image signal is other than 4: 3, whether or not the image of the input image signal has the aspect ratio of 4: 3. A second means for detecting the vertical width and position of the image when the aspect ratio of the image of the input image signal is other than 4: 3; A third means for determining an optimum display size and a vertical display position of the image on the television screen according to the detected width and position in the vertical direction, and the deflection is performed by the third means. By controlling a circuit, the video of the input video signal is displayed on the television screen so that there is no display defect and the non-video portion is minimized. Television display device. 2. The aspect according to claim 1, wherein the aspect ratio of the image is other than 4: 3 when a line in a specific range in the upper and lower parts of the image is a non-image part. A wide aspect television display device characterized by determining that. 3. The video start according to claim 1, wherein, for each field of the input video signal, the second means detects a first line and a last line including a video portion and indicates respective timings. A video start / end line detection circuit that outputs a line signal and a video end line signal, a vertical counter that counts a line cycle clock for each field of the input video signal, the video start line signal and the video end line signal A wide aspect comprising a latch circuit for latching the count value of the vertical counter at the timing of and a calculation circuit for computing the count value latched by the latch circuit to obtain the vertical width of the video. Television display device. 4. The optimum display size and the display position in the vertical direction according to claim 1, when the detected vertical width of the image is larger than the previously detected vertical width. A wide aspect television display device characterized by being changed. 5. The fourth means according to claim 1, further comprising: fourth means for detecting whether or not there is subtitle information in a line formed by a non-video portion below the video, the third means comprising: When it is determined by the means that there is subtitle information in the line consisting of the non-video portion, the display size of the video is made smaller than the optimum display size, and the display position in the vertical direction is adjusted. Wide aspect television display device.