JPH07274128A - Television signal processing and display device - Google Patents

Abstract

PURPOSE:To effectively use the screen of a display device at the time of displaying a video signal whose aspect ratio is 16:9 on a display device where the aspect ratio is 16:9, the number of vertical valid pixels is 1080, the number of horizontal valid pixels is 1920 and the pixels are fixed. CONSTITUTION:A signal source 301 outputs a first video signal whose aspect ratio is 16:9 and whose number of valid scanning lines is 360 and a 1-3 converter 302 converts the first video signal into a second video signal whose number of the valid scanning lines is 1080. A buffer memory 303 stores the second video signal. The output of the buffer memory 303 is displayed by the display device 304 whose number of the pixels in a vertical direction is 1080, whose number of the pixels in a horizontal direction is 1920 and whose aspect ratio is 16:9.

Description

Detailed Description of the Invention

[0001]

This invention relates to television signal processing and display devices.

[0002]

2. Description of the Related Art Aspect ratio of 4: 3 such as movies
In order to display a longer horizontal image on the current 4: 3 television receiver while maintaining the perfect circularity, the letterbox format with no image at the top and bottom of the screen is used. .

Also, when an image captured by a camera on a horizontally long screen having an aspect ratio of 16: 9 is displayed on a display device having an aspect ratio of 4: 3, the circularity cannot be maintained, and a circular object has a vertically elongated elliptical shape. Become. Therefore, there is also broadcast in which a horizontally long image is compressed 3/4 times in the vertical direction so that the upper and lower portions are not imaged. Based on this situation, CRTs with an aspect ratio of 16: 9 have recently been developed.
Television receivers with (color cathode ray tube) are commercially available.

FIG. 14 shows the configuration of a horizontal television receiver currently on the market. The video signal input to the input terminal 101 is a time compression circuit 102 and a synchronization generation circuit 10.
Guided by 3. One end of the switch 106 has a ground (GN
D) 107 is grounded, the other end is connected to the power supply 104 via the resistor 105, and is connected to the time compression circuit 102 and the synchronization generation circuit 103 via the connection point 109. Therefore, when the switch 106 is open, the potential of the connection point 109 is positive, and when the switch 106 is closed, the potential is grounded. The output of the time compression circuit 102 is input to the cathode end of the CRT 108. The synchronization generation circuit 103 generates horizontal and vertical deflection pulses and supplies them to the deflection coil of the CRT 108.

The user closes the switch 106 when viewing a video signal having an aspect ratio of 4: 3. Then, the potential of the connection point 109 is grounded, and the time compression circuit 102
Then, the input signal is horizontally compressed to 3/4 and output. Further, in the synchronization generating circuit 103, the vertical direction is 48
A vertical deflection pulse is output so that 0 scanning lines are displayed. Therefore, an image as shown in FIG. 14A is displayed on the screen of the CRT 108.

On the other hand, when viewing a horizontally long image, the switch 106 is opened. The potential of the connection point 109 becomes positive, and the time compression circuit 102 outputs the signal as it is without performing time compression on the input signal. The synchronization generating circuit 103 outputs a vertical deflection pulse such that 360 scanning lines are displayed in the vertical direction. Therefore, the screen of the CRT 108 is shown in FIG.
4 (B) is displayed.

[0007]

As described above, in the television receiver using the CRT as the display device, the display device can be effectively used by changing the vertical deflection angle according to the number of scanning lines. It is possible. By the way, in recent years, the aspect ratio is 16: 9 and the number of vertical effective pixels is 108.
HDT with 0 pixels and 1920 horizontal effective pixels
Although a common display format of V (High Definition Television) has been proposed, even a display device capable of displaying according to this format changes the number of scanning lines to be displayed by changing the vertical deflection angle. be able to.

However, in a display device with fixed pixels such as a liquid crystal display or a plasma display, a method of changing the deflection angle cannot be adopted. Therefore, according to the present invention, the aspect ratio is 16: 9, the effective number of vertical pixels is 1080 pixels,
A television signal having a horizontal effective pixel number of 1920 and capable of effectively utilizing the screen of the display device when displaying a video signal having an aspect ratio of 16: 9 to a display device having fixed pixels. An object is to provide a processing and display device.

[0009]

According to the present invention, there is provided an interpolating means for interpolating a video signal in accordance with the number of vertical pixels of the display device by the interpolating means. That is, the aspect ratio is A:
B, a video signal source for outputting a first video signal having N1 effective scanning lines, and the number of effective scanning lines N2 for the first video signal.
A conversion means for converting into a second video signal of a book, a storage means for storing the second video signal, and an output signal of the storage means are supplied, and the number of pixels N2 in the vertical direction and the number of pixels in the horizontal direction are supplied. N3 and display means for displaying with an aspect ratio of A: B.

[0010]

By interpolating by the interpolating means as described above, the number of vertical effective pixels is N2 (= 1080) pixels and the number of horizontal effective pixels is N3 (= 1920) pixels. The screen can be used effectively.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1A shows a first embodiment of the present invention. In this embodiment, the number of effective scanning lines is 360, such as a letterbox-processed image having an aspect ratio of 16: 9.
A television signal of a book has an aspect ratio of 16: 9, vertical effective pixels of 1080, and horizontal effective pixels of 1.
This is an example of a case of displaying on a liquid crystal display device, for example, with 920 pixels and fixed pixels.

A television signal having 360 effective scanning lines is output from the 360-line signal source 301. The 360 signal sources 301 include, for example, a receiving circuit of a television signal of a letter box system and a VTR. The output of the 360 signal sources 301 is supplied to the 1 → 3 converter 302.
In the 1 → 3 converter 302, 360 scanning lines are interpolated in the vertical direction so that the number of scanning lines becomes 1080.

Here, since 360 × 3 = 1080,
The simplest method is to use the line memory 311 as shown in FIG. 1B to read the same line three times with a triple clock. The write clock for the line memory 311 is the rate of the input signal, and the read clock is three times that rate. Figure 1 is a conceptual diagram of its operation
It shows in (C). That is, the line on the input side is read three times at a triple speed, and 360 lines are 1080 lines.

FIG. 2 shows another example of the 1 → 3 converter 302. As shown in FIG. 2A, the input terminal 20
1 signal is the triple speed converter 204, the interpolation filter 20
2, 203. Interpolation filters 202, 203
Are supplied to the triple speed converters 205 and 206, respectively. And triple speed converters 204, 205, 206
Output the signal at three times the speed, which is supplied to each corresponding input of the switch 207. This switch 207 selects and derives the output of each double speed converter as shown in FIG. 2 (B), generates signals of 3, 6, 9, ..., 1080 lines, and leads them to the output end 208. If an interpolation signal is generated using an interpolation filter, a wideband signal with little aliasing can be generated. The better characteristics are obtained when the interpolation filter has a larger number of taps, but a conceptual diagram of the simplest 2-tap filter is shown in FIG.

In FIG. 2B, the left line is 360 scanning lines before conversion, and the right line is 1080 scanning lines after conversion. The first line on the left side is used as it is. The second line is generated by mixing a product obtained by multiplying the left first line by 2/3 and a product obtained by multiplying the second line by 1/3, and the third line is similarly generated by the left line. Multiply 1/3 on the first line and 2 / on the second line
A product of 3 is mixed and generated.

Further, in a normal television signal such as the NTSC system, as shown in FIG. 3A, since it has an interlaced structure, only 180 scanning lines exist per field. In such a case, the simplest method is to generate 6 lines from 1 line as shown in FIG. 3 (B), but it is better to use the interpolation filter as described in FIG. 2 (A). Good characteristics are obtained. The interpolation filter has better characteristics as the number of taps increases,
A conceptual diagram of the simplest 2-tap one is shown in FIG.

Further characteristics can be obtained by constructing the spatiotemporal filter using the front and back fields. The spatiotemporal filter may use any number of fields, but in reality the hardware scale becomes large, so
Alternatively, it is composed of 3 fields. FIG. 4B shows a conceptual diagram of a space-time filter using three fields. Here, the second field of n frames is interpolated by using the preceding and following fields. In addition, the spatiotemporal filter may generate a sequential scanning signal of 360 effective scanning lines once, and then generate 1080 scanning lines as shown in FIGS. 1C and 2B. It is possible. With this method, the characteristics are smaller than in the case of FIG. 4B, but the scale of hardware is small.

By performing the motion adaptation processing as shown in FIG. 5A, the image quality of the still image portion can be improved. Figure 5
As shown in (B), in interlaced scanning, the motion component is folded back in the vertical high range, and therefore the characteristics of the interpolation filter cannot be extended so much. Although it depends on the characteristics of the camera, the limit is about 240 [LPH] with 360 scanning lines. However, since there is no motion component in the still image portion, the characteristics can be sufficiently extended.

The video signal input from the input terminal 201 is
Still image processing unit 210, moving image processing unit 211, and motion detection unit 21
Guided to 2. The still image processing unit 210 performs interpolation with a wide band interpolation filter and guides it to the mixer 213. The operation processing unit 211 performs interpolation using a narrow band interpolation filter as shown in FIGS. 4A and 4B, and guides it to the mixer 213. The motion detection unit 212 detects the motion of the image, generates a motion detection signal, and guides it to the mixer 213. Mixer 2
In No. 13, the ratio of the signal from the motion processing unit 211 is increased in the portion having a large amount of motion by the motion detection signal, and the ratio of the signal from the still image processing unit 210 is increased in the still image portion to mix them. The output of the mixer 213 is led to the output end 208.

Returning to FIG. 1, the output of the 1 → 3 converter 302 is guided to the horizontal interpolator 303. 4 in NTSC system
When sampling is performed using fsc (fsc is a color subcarrier), 1
The horizontal scanning period is 910 samples. The effective pixels among them are 768 pixels. Therefore, 2.5 with the interpolation filter
If it is doubled in the horizontal direction, it becomes 1920 pixels. The interpolation filter has better characteristics when the number of taps is larger,
FIG. 6 shows a conceptual diagram of the simplest 2-tap configuration. Here, since the first pixel is used as it is, the number of pixels generated by interpolation is from the second pixel to the fifth pixel, and only four kinds of interpolation filters are required.

In a liquid crystal display, a plasma display, or the like, the information of a pixel at a certain point must be held until the next information of the pixel (then a frame) comes.
The buffer memory 304 holds this information. The output of the buffer memory 304 has an aspect ratio of 16: 9, a vertical effective pixel count of 1080 pixels, and a horizontal effective pixel count of 19 pixels.
Display is performed by being guided to the display device 305 of 20 pixels.

As described above, according to this embodiment, the aspect ratio is 16: 9, the number of vertical effective pixels is 1080 pixels, and the number of horizontal effective pixels is 1920 pixels. Can be used effectively. Further, since the interpolation ratio is 1: 3 in the vertical direction and 2: 5 in the horizontal direction, which is a simple ratio, there are two types of filters even when the interpolation filter is used, and two types in the case of the vertical direction.
In the case of horizontal, it is enough to have four types, so less hardware is required. (Second Embodiment) FIG. 7 shows a second embodiment of the present invention. In this embodiment, the circularity ratio is maintained even when a television signal having a 16: 9 aspect ratio, 480 effective scanning lines and progressive scanning is received by a television receiver having a current aspect ratio of 4: 3. The number of effective scanning lines is set to 360 by compressing in the vertical direction so as to drip. Then, the component (auxiliary signal) lost by the compression is multiplexed with respect to the remaining 120 scanning line portions (hereinafter, referred to as upper and lower non-image portions) and transmitted as a multiplexed signal (hereinafter, referred to as a broadcast signal). It is an example of a television receiver that can receive horizontal broadcasting).

First, an encoder for a horizontally long broadcast signal will be described with reference to FIG. A television signal of aspect ratio 16: 9, 480 effective scanning lines, and progressive scanning input from the input terminal 501 is a vertical high-pass filter (V-HP).
F) 502, vertical low-pass filter (V-LPF) 50
Guided to 5. 360 in the vertical high-pass filter 502
A vertical high frequency component (hereinafter referred to as VH signal) of [TVL] or more is extracted and input to the line inversion circuit 503.
In the line inversion circuit 503, the polarity is inverted every other line, the vertical high frequency component is shifted to the vertical low frequency band, and is guided to the multiple signal generation circuit 504. In the multiplex signal generation circuit 504, compression processing is performed so that the compensation signals fit in the upper and lower non-image parts, and the result is supplied to the adder 511 as a multiplex signal.

In the vertical low pass filter 505, 360
Vertical low-pass components below [TVL] are extracted and guided to the 4 → 3 converter 506. The 4 → 3 conversion circuit 506 performs vertical compression, and the number of effective scanning lines increases from 480 to 360.
It becomes a book and the vertical high-pass filter (V-HPF) 50
7. It is led to the vertical low pass filter (V-LPF) 509. The vertical high-pass filter 507 extracts a vertical high-frequency component (hereinafter referred to as an LD signal) and guides it to the multiplex signal generation circuit 508. In the multiple signal generation circuit 508, L
The D signal is compressed so that the D signal fits in the upper and lower non-picture portions and is guided to the adder 511 as a multiplexed signal. The output of the adder 511 is guided to the selection means 512. Vertical low pass filter 5
At 09, the vertical low-frequency component is extracted and guided to the interlaced scan converter 510. The interlaced scan converter 510 performs conversion from sequential scanning to interlaced scanning, and the selection means 51.
Guided to 2. The selection means 512 selects the output of the adder 511 during the period of the upper and lower non-image portions, and selects the output of the interlaced scanning converter 510 during the period of the central portion of the screen (main signal) and leads it to the output terminal 513. Although not shown, an image motion detecting means is provided so that the LD signal is transmitted in the region where the image is moving, and the LD signal and the VH signal are transmitted in the upper and lower non-image portions in the still image region. There is.

The encoded signal generated as described above can be displayed even if it is received by a current receiver having an aspect ratio of 4: 3, without the roundness thereof being deteriorated. Also,
The dedicated receiver reproduces the multiplexed signal and restores the auxiliary signal, so that the aspect ratio is 16: 9 and the number of effective scanning lines is 4.
It is possible to perform progressive scanning display of 80 lines.

Displaying the signal decoded as described above on a display device having an aspect ratio of 16: 9, vertical effective pixels of 1080 pixels, horizontal effective pixels of 1920 pixels, and fixed pixels. A second embodiment of the present invention capable of doing so is shown in FIG. The same numbers are added to those having the same functions as those of the first embodiment of FIG.

In FIG. 7, the signal input to the input terminal 401 is input to the multiple signal processing circuit 402 and the main signal processing circuit 406. In the multiplex signal processing circuit 402, the multiplex signals multiplexed in the upper and lower non-image parts are processed to restore the auxiliary signal, and the LD signal of them is processed by the main signal processing circuit 4.
At 06, the VH signal is directed to the 3 to 4 converter 403.

Although not shown in the drawing, the multiple signal processing circuit 402 has a motion detecting section and is subjected to motion adaptive processing, and the moving image section processes the multiple signal as an LD signal. On the other hand, in the still image section, the LD signal and the VH signal are mixed by the encoder to form a multiplexed signal, so that the LD signal and the VH signal are mixed.
The H signal is separated.

In the 3 → 4 converter 403, the number of effective scanning lines is 4
The signal is converted into 80 signals and guided to the line inversion circuit 404. The line inversion circuit 404 inverts the polarity every other line to shift V to the vertical reduction.
The H signal is shifted to the vertical high range and is guided to the 4 → 9 converter 405. In the 4 → 9 conversion circuit 405, the number of effective scanning lines is converted from 480 to 1080 and guided to the adder 408.

On the other hand, in the main signal processing circuit 406, the signal of the main portion (center portion of the screen) and the multiple signal processing circuit 402
A signal for sequential scanning with 360 effective scanning lines is generated by the LD signal obtained from the above, and is guided to the 1 → 3 converter 302.
In the 1 → 3 conversion circuit 302, the number of effective scanning lines is converted from 360 to 1080 and guided to the adder 408. The output of the adder 408 is guided to the horizontal interpolator 303 and interpolated in the horizontal direction, and then guided to and stored in the buffer memory 304. The output of the buffer memory 304 is the display device 30.
Guided to 5.

Also in this embodiment, as shown in the first embodiment, various methods can be used for the 1 → 3 converter 302. Further, since the multiple signal processing circuit 402 has the motion detecting unit as described above, the motion detecting unit 2 in FIG.
12 may be omitted and the result of the motion detection circuit of the multiple signal processing circuit 402 may be used.

In the above embodiment, the aspect ratio is 1
The effective number of pixels is 6: 9, the number of effective pixels in the vertical direction is 1080 pixels, and the number of effective pixels in the horizontal direction is 1920 pixels, and the screen can be effectively used even in a display device in which the pixels are fixed. In addition, the encoded signal has an aspect ratio of 16:
9. Compared to the case where the number of vertical effective scanning lines is decoded into 480 signals and the number of effective scanning lines of the decoded signal is converted from 480 to 1080, the main part needs only one interpolation. Therefore, the deterioration of the band due to the interpolation filter is small. (Third Embodiment) FIG. 9 shows a third embodiment of the present invention. This third embodiment is a PAL system,
When a SECAM video signal is displayed in a letterbox format with an aspect ratio of 16: 9, the number of effective scanning lines is 43.
It is compatible with two broadcasting systems. Those having the same functions as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 9, in the present embodiment, a television signal having an effective scanning line number of 432 lines such as an image having an aspect ratio of 16: 9 which has been subjected to a lator box processing has an aspect ratio of 1
Display device 3 in which the number of effective pixels in the vertical direction is 1080, the number of effective pixels in the horizontal direction is 1920, and the number of effective pixels in the horizontal direction is 1920, and the pixels are fixed
This is an example of the case of displaying on 04.

The number of effective scanning lines is 4 for 432 signal sources 701.
Outputs 32 television signals and outputs 2 → 5 converter 70
Lead to 2. In the 2 → 5 converter 702, the number of scanning lines is set to 1080 by performing interpolation processing of 432 scanning lines in the vertical direction.

The 2 → 5 converter 702 generates an interpolation signal by using an interpolation filter as shown in FIG. 9 (B). A conceptual diagram of the simplest 2-tap one is shown in FIG. Here, the operation will be briefly described with reference to FIGS. 9 (B) and 9 (C). The effective scanning line input to the input terminal 801 is 43
The two signals are the 2.5 × speed converter 806 and the interpolation filter 8.
02, the interpolation filter 803, the interpolation filter 804, and the interpolation filter 805. The interpolation filter 802 generates signals of 2, 7, 12, ... Lines of FIG. 9C, the interpolation filter 803 generates signals of 3, 8, 13, ... Lines, and the interpolation filter 804 generates 4, 9 ,. 14, ... Line signals are generated, and the interpolation filter 805 generates 5, 10,
15, ... Generates line signals. Interpolation filter 80
2, the outputs of the interpolation filter 803, the interpolation filter 804, and the interpolation filter 805 are the 2.5 × speed converter 80, respectively.
7, 2.5x speed converter 808, 2.5x speed converter 80
9 and guided to the 2.5 × speed converter 810. In the 2.5x speed converter 806, the 2.5x speed converter 807, the 2.5x speed converter 808, the 2.5x speed converter 809, and the 2.5x speed converter 810, the signal speed is 2.5 times, respectively. Converted,
It is supplied to each corresponding input terminal of the switch 811. The switch 811 selects the outputs of the 2.5x speed converter 806, the 2.5x speed converter 807, the 2.5x speed converter 808, the 2.5x speed converter 809, and the 2.5x speed converter 810 in order. Then, the selected signal is guided to the output terminal 812.

The 2 → 5 converter 702 can be various methods as in the first embodiment. In the case of the tele-interlaced structure, the interpolation may be performed as shown in FIG. 10A as in the case of FIG. 4A, or the spatiotemporal filter may be used as shown in FIG. 11 as shown in FIG. 4B. It is possible. Further, as shown in FIG. 5, the vertical resolution of the still image portion can be increased by the motion adaptation process.

Returning to FIG. 9A, the 2 → 5 conversion circuit 70
The second output is horizontally interpolated by the horizontal interpolator 303 and input to the buffer memory 304. 4 in PAL system
When sampling at fsc (fsc is a color subcarrier of about 4.43 [MHz]), the number of effective pixels is about 720. Considering the interpolation filter here, a simple ratio 1920
It should be convertible to pixels. Assuming that the number of effective pixels is 720, the number of pixels becomes 8/3 times, which is 1920 pixels. Similar to the case of FIG. 6, it is possible to obtain a better characteristic by interpolating with an interpolation filter having a larger number of taps, but FIG. 11 shows a conceptual diagram of the simplest two taps.

The output of the buffer memory 304 is guided to a display device 305 having an aspect ratio of 16: 9, vertical effective pixels of 1080 pixels, and horizontal effective pixels of 1920 pixels for display.

According to the above embodiment, the aspect ratio is 16: 9, the vertical effective pixel number is 1080 pixels, the horizontal effective pixel number is 1920 pixels, and the screen is effective even in the display device in which the pixels are fixed. It is possible to use. In addition, since the vertical interpolation ratio is a simple ratio of 2: 5, even when an interpolation filter is used, the filter type is 4
Since there are only a few types, it requires less hardware. (Fourth Embodiment) FIG. 12A shows the fourth embodiment of the present invention. Components having the same functions as those in the third embodiment of FIG. 9 are designated by the same reference numerals, and detailed description thereof will be omitted.

The fourth embodiment is a PAL system, SECA.
When an image having an aspect ratio of 16: 9 is displayed in the lator box format as in the M system, the broadcasting system in which the effective scanning line number becomes 432 is applied to multiplex the upper and lower non-image parts as in the second embodiment. This corresponds to the method of multiplexing signals.
There is a PAL-PLUS system which is currently proposed. First, FIG. 12 shows a PAL-PLUS encoder.
This will be described with reference to FIG.

A video signal with an aspect ratio of 16: 9 and an effective scanning line number of 576 input from the input terminal 901 is led to a vertical high-pass filter (V-HPF) 902 and a vertical low-pass filter (V-LPF) 903. The vertical high-pass filter 902 extracts a vertical high-frequency component of 432 [LPH] or more and guides it to the auxiliary signal generation circuit 904.
The auxiliary signal generation circuit 904 compresses the vertical high frequency component (compensation signal) so that the signals can be multiplexed on the 144 scanning lines in the upper and lower non-image areas, and generates a multiplexed signal. The output of the auxiliary signal generation circuit 904 is guided to the selection means 906. The vertical low-pass filter 903 extracts vertical low-frequency components,
3 converter 905. In the 4 → 3 converter 905, the number of effective scanning lines is compressed from 576 to 432, and is guided to the selection unit 906. The selection unit 906 switches between the central portion (center portion) of the screen and the upper and lower non-image portion periods to select them, and guides them to the output terminal 907.

Although not shown in the drawing, a motion detecting unit is provided, and vertical high-frequency components are multiplexed in the upper and lower non-image parts only in the case of a still image. A circuit for receiving and displaying the signal transmitted as described above is the embodiment shown in FIG.

The signal input to the input terminal 601 is guided to the auxiliary signal reproducing circuit 602, 2 → 5 converter 702. The compensation signal reproducing circuit 602 reproduces the multiplexed signal multiplexed in the upper and lower non-image parts to generate a vertical high frequency component of 432 [LPH] or more. The output of the compensation signal reproducing circuit 602 is 8 →
15 is input to the converter 603, the number of effective scanning lines is converted from 576 to 1080, and the result is guided to the adder 605.
In the 2 → 5 converter 702, the number of effective scanning lines is 1 from 432
It is converted into 080 lines and guided to the adder 605.

The output of the adder 605 is the buffer memory 3
It is input to 03. The output of the buffer memory 303 is a display device 304 having an aspect ratio of 16: 9, vertical effective pixels of 1080 pixels, and horizontal effective pixels of 1920 pixels.
Is displayed and is displayed.

In the embodiment configured as described above, the aspect ratio is 16: 9, the number of effective pixels in the vertical direction is 1080 pixels, the number of effective pixels in the horizontal direction is 1920 pixels, and the screen is fixed even in the display device. Can be used effectively. Also, the encoded signal is decoded into a signal having an aspect ratio of 16: 9 and vertical effective scanning lines of 480, and the effective scanning lines of the decoded signal is set to 5
Compared to the case of converting from 76 lines to 1080 lines, interpolation in the main part is completed only once, and therefore deterioration of the band due to the interpolation filter can be reduced.

[0046]

As described above, according to the present invention,
Aspect ratio 16: 9, vertical effective pixel number 1080
When a video signal having an aspect ratio of 16: 9 is displayed on a display device in which the number of pixels and horizontal effective pixels is 1920 pixels, the screen of the display device can be effectively used.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

2 is an explanatory diagram showing another example of the 3 → 4 converter of FIG. 1. FIG.

FIG. 3 is an operation explanatory view shown for explaining an operation example of the apparatus of the present invention.

FIG. 4 is an operation explanatory view shown for explaining an operation example of the apparatus of the present invention.

FIG. 5 is an explanatory diagram of a motion adaptive processing circuit.

FIG. 6 is an operation explanatory view shown for explaining an operation example of the apparatus of the present invention.

FIG. 7 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 8 is a diagram showing an example of an encoder according to a second embodiment.

FIG. 9 is an explanatory diagram showing a third embodiment of the present invention.

FIG. 10 is an operation explanatory view shown for explaining an operation example of the third embodiment.

FIG. 11 is an operation explanatory view shown for explaining an operation example of the third embodiment.

FIG. 12 is an explanatory diagram showing a fourth embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of a horizontal television receiver.

FIG. 14 is a diagram showing an example of a display screen of a horizontal television receiver.

[Explanation of symbols]

301 ... 360 main signal source, 302 ... 1 → 3 converter, 30
3 ... Buffer memory, 304 ... Display device, 202, 20
3 ... Interpolation filter, 204, 205, 206 ... 3x speed converter, 402 ... Multiplex signal processing circuit, 403 ... 3 → 4 converter, 404 ... Line inversion circuit, 405 ... 4 → 9 converter,
406 ... Main signal processing circuit, 501 ... Vertical high-pass filter, 503 ... Line inversion circuit, 504 ... Multiplex signal generation circuit, 505 ... Vertical low-pass filter, 506 ... 4 →
3 converter, 507 ... Vertical high-pass filter, 508 ... Multiplex signal generation circuit, 509 ... Vertical low-pass filter, 51
0 ... Interlaced scan converter, 511 ... Adder, 512 ... Selection means, 701 ... 432 main signal source, 702 ... 2 → 5 converter, 802-805 ... Interpolation filter, 806-810 ...
2.5x speed converter, 602 ... Auxiliary signal reproducing circuit, 603
... 8 → 15 converter, 605 ... Adder, 902 ... Vertical high-pass filter, 903 ... Vertical low-pass filter, 904
... Auxiliary signal generation circuit, 905 ... 4 → 3 converter, 906 ...
Means of choice.

Claims (15)

[Claims] 1. An input end to which a first video signal having an aspect ratio of 16: 9 and 360 effective scanning lines is input, and a second input terminal having the first video signal having 1080 effective scanning lines. First converting means for converting into a video signal; second converting means for interpolating the second video signal in a horizontal direction to convert the number of effective pixels in the horizontal direction into a third video signal of 1920; A storage unit for storing the third video signal, and a display unit which is supplied with the output signal of the storage unit and displays the number of vertical pixels 1080, the number of horizontal pixels 1920, and the aspect ratio 16: 9. A display device characterized by being provided. 2. The second video signal is obtained by reading the same scanning line three times when the first video signal has a non-interlaced structure, and by reading the same scanning line six times when the first video signal has an interlaced structure. The display device according to claim 1, wherein the display device is obtained. 3. A first television signal having N scanning lines (N is an integer) is compressed into a scanning line number M (M <N, M is an integer), and a compensation signal is converted into a multiple signal. The input terminal to which the second television signal multiplexed into the remaining (N−M) lines is input, the reproducing means for reproducing the compensation signal from the multiplexed signal, and the number of scanning lines of the compensation signal First converting means for converting into 1080 lines; second converting means for converting the scanning lines of the signal of the scanning line number M obtained from the receiving means into 1080 lines; Direction conversion, and third conversion means for converting the number of effective pixels in the horizontal direction into 1920, storage means for storing the output of the third conversion means, and an output signal of the storage means is supplied, and a vertical direction , The number of pixels in the horizontal direction 1920, and Aspect ratio 16: 9 display device, characterized in that the ingredients of the display means. 4. The display device according to claim 3, wherein the compensation signal is a vertical high frequency component. 5. The display device according to claim 4, wherein N = 480 and M = 360. 6. The second television signal has an interlaced structure, and the second conversion means uses the same scan line 6 times.
The display device according to claim 5, wherein the number of scanning lines is converted into 1080 by reading out twice. 7. An input terminal to which a first video signal having an aspect ratio of 16: 9 and an effective scanning line number of 432 is input, and a first video signal which is a second input terminal having 1080 effective scanning lines. First conversion means for converting into a video signal; third conversion means for interpolating the second video signal in the horizontal direction to convert the number of effective pixels in the horizontal direction into a third video signal of 1920; Storage means for storing the third video signal, vertical pixel number 1080 and horizontal pixel number 19
20 and a display means having an aspect ratio of 16: 9. 8. The second video signal corresponding to between n lines (n is an integer from 1 to 432) of the first video signal and n + 1 lines is the n lines of the first video signal. 8. The display device according to claim 1, wherein the display device is generated by interpolating from n + 1 lines or by interpolating from n lines and n + 1 lines of the first video signal and lines in the vicinity thereof. 9. The second video image, wherein the first video signal has an interlaced structure, and corresponds to between m lines (m is an integer from 1 to 180) and m + 1 lines of the first video signal. The signals are m lines and m of the first video signal.
8. The display device according to claim 1, wherein the display device is generated by interpolating from +1 line or by interpolating from m line and m + 1 line of the first video signal and a line in the vicinity thereof. 10. The second video image, wherein the first video signal has an interlaced structure, and corresponds to between m lines (m is an integer from 1 to 180) and m + 1 lines of the first video signal. The signal is interpolated from the first video signal of one field before, the first video signal of one field after and the first video signal of the current field, or the first video signal of one field before and one field. The first video signal after that,
The display device according to claim 1, wherein the display device is generated by being interpolated from the first video signal of the current field. 11. The display device according to claim 4, wherein N = 576 and M = 432. 12. The second television signal has an interlaced structure, and the second converting means uses m when interpolating a corresponding line between the m line and the m + 1 line.
Interpolation from line and m + 1 line, or m line and m +
The display device according to claim 5, wherein the display device is generated by interpolating from one line and a line in the vicinity thereof. 13. The second television signal has an interlaced structure, and the second conversion means sets 1 when interpolating a line corresponding to between the m line and the m + 1 line.
It is characterized in that it is generated by interpolating from a signal before field, a signal after one field and a signal of the current field, or by interpolating from a signal before one field, a signal after one field and a signal of the current field. The display device according to claim 5. 14. The pixel generated by the interpolation is generated by interpolating a pixel temporally and spatially close to the pixel by a spatiotemporal filter. Display device. 15. A motion detecting section for detecting a motion of an image from the output of the receiving means or the first video signal, and in a part having little motion, a signal one field before or one field after, and a current field. The display device according to claim 1, wherein the interpolation is performed using the signal of.