JPH07274088A - Wide aspect television device - Google Patents

Abstract

PURPOSE:To permit a viewer to freely set a display form. CONSTITUTION:A non-interlace signal from a non-interlace converting circuit 14 is supplied to a selector 24 as a B0 mode signal and also supplied to a right/ left compressing means 16 and a screen sampling circuit 22. The right/left compressing means 26 compresses the non-interlace signal and supplies it to the selector 26 as an A mode signal. The screen sampling means 22 controls the writing and reading of the nonrinterlace signal and converts the prescribed part of an image into the signal with a prescribed aspect ratio and it is supplied to the selector 24 as B1 and B2 mode signals. The selectors 24 and 26 selects one of the A, B0, B1 and B2 mode signals based on the operation of the viewer and supplies it to the selector 26. Thus, viewing in the display form required by the viewer is possible.

Description

Detailed Description of the Invention

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wide aspect television apparatus for displaying a normal television signal such as NTSC or PAL on a screen having a wide aspect ratio suitable for displaying a high quality television signal.

[0002]

2. Description of the Related Art In recent years, various high-definition television systems (high-definition television systems) have been developed in television broadcasting in order to improve image quality. The high-definition system is roughly divided into the number of scanning lines and the field frequency which are not changed. For example, the signal is transmitted during the horizontal blanking period to widen the aspect ratio (EDTV), the number of scanning lines, the field frequency and the aspect ratio. It can be divided into those that change the ratio and the like (HDTV).

In such a wide aspect television device, the aspect ratio of the screen is set to, for example, 9:16. Compared with the aspect ratio 3: 4 of the current television device, the wide aspect television device is , The horizontal ratio is wider than that of current television devices. In contrast, current television devices have a greater aspect ratio than wide aspect television devices.

As described above, the mixture of the television devices having different aspect ratios means that each television device is
It is needless to say that the signals of both systems can be received, but it is required to prevent information loss and image quality deterioration due to the difference in aspect ratio even in screen display.

FIG. 10a shows a screen when a normal signal having an aspect ratio of 3: 4 is displayed on a wide aspect television device. In this case, as shown by the shaded area, for example, a blank screen of achromatic constant brightness must be added to the display area on the screen side. When displaying a wide aspect signal on a current television device, a screen similar to the above must be added above and below the screen, as indicated by the diagonal lines in FIG. 10b. Inserting such a blank screen does not make effective use of the screen, loses the realism of the image, and cannot be viewed correctly. In addition, when the time for displaying the normal signal is long, the degree of fluorescent burning differs between the non-display area on both sides and the central display area. Also in the latter case (FIG. 10B), the image size is so small that a realistic image cannot be obtained.

[0006]

As described above, when displaying a signal (normal signal) having a smaller aspect ratio in a television device having a wide aspect ratio, the wide screen is not effectively used. However, there was a drawback that the realism of the image was lost and the product quality was deteriorated and the marketability was not obtained.

The present invention eliminates the above-mentioned problems, and even when the signal is displayed on the screen having a larger aspect ratio than the signal to be displayed, the viewer can effectively use the screen to give a realistic image. It is an object of the present invention to provide a wide aspect television device.

[Structure of Invention]

According to a first aspect of the present invention, there is provided a wide aspect television device having a screen having a horizontally long aspect ratio which is horizontally longer than a predetermined aspect ratio, and a first aspect which matches the horizontally long aspect ratio. In a wide aspect television device capable of displaying an image by the second image signal and an image by the second image signal that matches the predetermined aspect ratio, the wide aspect television device receives the second image signal, First means for displaying the entire image obtained from the signal on the screen in a state where the roundness is 100% at the predetermined aspect ratio, and the image obtained from the second image signal after receiving the second image signal. A second means for displaying a predetermined portion on the entire area of the screen in a state where the circularity is other than 100%, and either one of the first means or the second means is operated by a user. Select by Zui, which was equipped with a selector for performing display on the screen, wide aspect television apparatus according to claim 2 of the present invention,
A screen having a horizontal aspect ratio longer than a predetermined aspect ratio is displayed, and an image is displayed by a first video signal that matches the horizontal aspect ratio and a video by a second video signal that matches the predetermined aspect ratio. A wide aspect television device capable of receiving the second video signal, and displaying the entire video obtained from the second video signal on the screen in a state where the circularity is 100% at the predetermined aspect ratio. And a second means for receiving the second video signal and displaying a predetermined portion of the video obtained from this signal on the entire area of the screen in a state where the circularity is other than 100%. Any of the first means, the first means, the second means, or the third means for receiving the second video signal and displaying the entire video obtained from this signal on the entire area of the screen. One was selected based on the user operation or is obtained by including a selector for performing a display on the screen.

[0009]

According to the present invention, a wide aspect screen has a vertically long aspect ratio (a predetermined aspect ratio in claims and an aspect ratio of 3: 4 in the embodiments).
Signal can be selectively displayed, that is, displayed with a blank screen on the left and right sides, displayed horizontally without adjusting the time axis, or displayed at the desired roundness by adjusting the time axis. it can. The selection of such a display form can be made on the viewer side, the viewer can visually recognize the signals having different aspect ratios, and the screen can be effectively used to make the addition in the television device of this type. Value can be increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.

The present embodiment is intended to effectively use the wide aspect screen when displaying an image vertically longer than this aspect ratio on the wide aspect screen, and faithfully reproduces the aspect ratio of the image. Roundness 10
In addition to the 0% display mode, in order to display a wider portion of the image on the entire screen without any discomfort, the roundness rate is set to 10%.
A mode for displaying in a state other than 0% is provided, and these modes can be switched.

FIG. 1 is a block diagram showing an embodiment of a wide aspect television apparatus according to the present invention, and FIG. 2 is an example of a display mode which can be displayed by the present invention.

In FIG. 2, A indicates a signal having an aspect ratio of 3: 4, for example, a signal having an aspect ratio of 3: 4 (hereinafter referred to as NTSC signal), which is time-axis-compressed and is displayed as it is at an aspect ratio of 3: 4. It is a thing. Hereinafter, the display form of FIG. 2A is referred to as A mode. Further, FIG. B shows an aspect ratio of 9:
The NTSC signal is displayed as it is on 16 screens. Therefore, it becomes a figure that extends horizontally. Hereinafter, the display form of FIG. 2B will be referred to as B0 mode. On the other hand, FIGS.
The TSC signal (actually a non-interlaced signal, which will be described later) is cut at the top and bottom, and the aspect ratio is converted to 9:16 for display. There are two types of conversion methods, as shown in FIG. 2C.
Is displayed so that the roundness is 94% (hereinafter referred to as B1 mode), and B2 has a roundness of 100% (B1 mode).
It is displayed as 2 modes). In order to achieve a roundness of 94%, if the number of scanning lines of the NTSC signal is 525, and 420 lines are extracted from this 525, and the number of scanning lines of the 9:16 screen is set to, for example, 525. , 525 scanning lines are newly created in accordance with the scanning of the above screen, and in order to display the circularity of 100%, 393 lines are extracted from the 525 scanning lines of the NTSC signal. , 525 scanning lines are newly created in accordance with the scanning of the 9:16 screen. In this case, the upper and lower cut widths can be relatively variable (scrolled).

FIG. 1 shows a configuration for generating signals in each of the above modes.

An input signal (for example, an NTSC signal) is input to the NTSC decoder 12 in this case via the input terminal 10. The NTSC decoder 12 decodes the NTSC signal to derive a time-division format luminance signal (hereinafter referred to as Y signal) and two types of color signals (hereinafter referred to as C1 signal and C2 signal), and non-interlace these signals. Conversion circuit 14
Supply to. Also, the NTSC decoder 12 is an NTSC
The reproduced sync signal is output from the signal 11. The non-interlaced conversion circuit 14 converts the interlaced Y signal, C1 signal, and C2 signal of 525 scanning lines into 52 scanning lines.
It is converted into five non-interlaced signals 15.

A memory circuit 17 to which the signal 15 is input
And the memory control circuit 18 to which the synchronization signal 13 is input,
The left and right compression circuit 16 is configured, and the read address and the write address output from the memory control circuit 18 are operated to output a signal 19 (A mode signal) in which the left and right of the signal 15 are compressed from the memory circuit 17. .

The non-interlaced signal 15 is input to the second memory circuit 20, and the synchronization signal 13 is input to the second memory circuit 20.
Is input to the memory control circuit 21. These circuits 2
0 and 21 constitute the screen extracting means 22. The memory circuit 20 has an image memory function and a function of performing a line operation of a signal read from the image memory. The memory control circuit 21 has a function of generating a read address and a write address for controlling the image memory, and a function of controlling the line operation. As a result, the B1 and B2 mode signals are output from the memory circuit 20.

The switching between the B1 and B2 modes is performed by the terminal 40
It is switched by the B1 / B2 switching signal from. Further, the memory control circuit 21 can adjust the position of the extracted image by a scroll signal from the terminal 30.

The non-interlaced signal 15 and the signal 23 from the memory circuit 20 are supplied to the selector 24.
The selector 24 is a circuit that outputs either the signal 23 or the non-interlaced signal 15. Since the non-interlaced signal 15 is a B0 mode signal, the selector 24 switches between the B0 mode and the B1 and B2 modes. Will be done. The B0 / B1 and B2 switching signals for this purpose are supplied from the terminal 50.

The output signal 25 of the selector 24 and the output 19 of the memory circuit 17 are supplied to the second selector 26. The selector 26 is a circuit that selects either the signal 19 or the signal 25 in the A mode, and switches between the A mode and the B (B0, B1, B2) mode. A / B0, B1 and B2 switching signals for this purpose are supplied from the terminal 70.

A signal 27 derived from the selector 26
Is displayed on a screen having a wider aspect ratio than the output terminal 60.

Next, the structure of the circuit for generating the signals in each mode will be described.

First, the left and right compression means for generating the A mode signal is a circuit for compressing the non-interlaced signal 15 on the time axis, and the description thereof is omitted in this specification. Also, B0
As the mode signal, the non-interlaced signal 15 is used as it is.

3 and 4 are circuit diagrams showing the screen extracting means 22 for generating B1 mode and B2 mode signals. FIG. 3 shows the memory control circuit 21 and FIG. 4 shows the memory circuit 2.
It is a block diagram of 0.

In FIG. 3, the write position determining circuit 210 is shown.
2 and the width determination circuit 212 sends an NTSC signal, for example, as shown in FIG.
As shown by C and D, 420 pieces are removed in the B1 mode (393 pieces in the B2 mode), and the upper and lower cut widths are changed by scrolling. That is, the write position determination circuit 210 uses the vertical synchronization signal 13 from the terminal P11.
a (VD) and the horizontal synchronizing signal 13b (H
D) and the scroll signal from the terminal 30 is supplied,
The width determining circuit 212 is supplied with the signal 211 from the write position determining circuit 210, the horizontal synchronizing signal (HD) from the terminal P12, and the B1 / B2 switching signal from the terminal 40.

The width determining circuit 212 outputs a pulse signal 213 indicating the extraction width from the writing position designated by the signal 211 from the positioning circuit 210. The pulse signal 213 is input to the write / address generating circuit 214. The circuit 214 generates the write address signal 215 during the pulse period of the pulse signal 213.

A read counter 216 has a terminal P12.
The simple counting operation is performed by the horizontal synchronizing signal 13b (HD) from the. The count output 217 by this is B1
It is input to the read address generation circuit 218 whose count mode is switched by the / B2 switch signal. That is, when the read address generating circuit 218 is in the B1 mode,
5 new from 420 signals extracted from NTSC signals
In order to generate 25 signals, the operation of stopping the count once (outputting the same value once every four times) is performed when the count output value is incremented by four. Further, in the B2 mode, in order to generate 525 new signals from 393 signals, the operation of stopping the counting operation once is performed after three steps.

The read address signal 219 from the read address generating circuit 218 is input to the multiplexer 220 together with the write address signal 215, and selectively led to the terminal P13. Further, the read address generating circuit 218 derives a calculation coefficient switching signal at the terminal P14. The calculation coefficient switching signal is a signal for switching the coefficient used for line calculation in the memory circuit 20 for each line.

Now, FIG. 4 shows an example of the memory circuit 20. The configuration of FIG. 4 performs interpolation between two points using a 1H memory as a line operation.

In FIG. 4, P15 is an input terminal to which the non-interlaced signal 15 is led, P16 is an input terminal from which the read / write address is led from the terminal P13, and P17 is an input from which the arithmetic coefficient switching signal is led from the terminal P14. It is a terminal.

Reference numeral 202 denotes a memory, and this memory 202
Reads and writes the non-interlaced signal 15 from the terminal P15 according to the read / write address from the terminal P16.

Signal 2 read from the memory 202
03 is held in the 1H memory 204 for each 1H data and is input to the coefficient ROM (1) 206 and directly input to another coefficient ROM (2) 208. These coefficients RO
The coefficients of the M (1) 206 and M (2) 208 are switched for each line by a calculation coefficient switching signal from the terminal P17. The outputs from the ROMs (1) 206 and (2) 208 are added by the adder 200. The adder 200 derives a new signal for 525 lines for display to the terminal P18.

The preferred embodiment of the present invention is constructed as described above, and its operation will be described below.

As described above with reference to FIG. 2, in the present embodiment, the A mode display in which a blank screen is added to the left and right sides is displayed, the B0 mode display is displayed in landscape orientation without adjusting the time axis, and the time axis is adjusted. B1 and B2 displayed with desired roundness
The user switches the mode display.

First, when the A mode is displayed, the non-interlaced signal 15 is processed by the memory circuit 17 to compress the time axis. For the compression of the time axis, for example, the published patent publication by the applicant of the present application: Showa 59-122286 can be used. This enables the A mode display as shown in FIG. 2a.

In the case of the B0 mode display, the non-interlaced signal 15 may be selected by the selectors 24 and 26 and displayed as it is. The screen in this case becomes a horizontally long image as shown in FIG. 2b due to the difference in aspect ratio.

Next, the operation when displaying in the B2 and B1 modes will be described with reference to FIGS.

FIG. 5 is an explanatory view for explaining the display operation in the B2 mode, in which a shows an input signal (non-interlaced signal 15) to the screen extracting means 22, b is a write address, and c is a write address. The read address and d the output signal 23.

FIG. 6 is an explanatory diagram showing the read address output 219 and the output of the coefficient ROMs (1) and (2) with respect to the read counter output 217 in the B1 and B2 modes, respectively. FIG. 7 shows the line operation method in the B2 mode. FIG. 8 is an explanatory diagram for explaining, and FIG. 8 is an explanatory diagram showing the same calculation method in the B1 mode.

In the B2 mode, an image is displayed with a perfect circularity of 100%. In order to perform display in which such distortion in the horizontal direction is eliminated, the NTSC signal may be extracted according to the difference in horizontal ratio. For example, when 393 lines are extracted centering on the video center, the 67th line in each signal I, II, III, ... In one vertical scanning period (1V) is determined by the scroll signal as shown in FIG. The width of 393 lines up to the line is determined by the circuit 212 and extracted. Then, these signals are written in the memory 202. FIG. 5b shows the write address at this time,
The memory 202 writes the signals I, II, III, ... While the memory area is cyclically accessed. The memory 202 is a 4-Mbit dynamic RAM. In this case, one address is assigned to one line. The signals I ', II', III '...
2, 393 to 273, 274 to 154, ...). This read signal 203 is output to the 1H memory 204, RO
Two-point interpolation is performed by the line operation means by M (1), ROM (2) and adder 200, and as shown in FIG.
New 525 video signals i, ii, iii ... For display are generated.

As shown in FIG. 6, the line calculation means first outputs a simple step count output 217 from the read counter 216 which outputs "0, 1, 2, 3, 4, 5 ..."
Depending on the 1 / B2 switching signal, "0, 1, 2, 2, 3,
4, 5, 5 ... ”. This is to increase 3 lines to 4 lines in order to obtain 393 to 525 new video signals.

In the second stage of the line operation, in accordance with the step of the read address 219, when the read address is "0", 3/4 is read from the ROM (1), 1/4 is read from the ROM (2), and read.・ ROM (1) when address is "1"
2/4 from ROM (2), 1/4 from ROM (1) at read address "2", ROM (2)
Output coefficients such as 3/4, ... R
The OM (1) gives the above coefficient to the signal from the 1H memory 204, and the ROM (2) gives the coefficient to the signal from the memory 202.
Assuming that B, C, ..., As shown in FIG. 7, the memory output is “A to C, ...
C to F, F, ... ”. Each of these signals “A to C,
When “C to F, F, ...” And “A to I ...” are respectively multiplied by the above coefficients and added by the adder 200, the output 23 of the adder 200 becomes as shown in the right column of FIG. . The results of these calculations are, for example, when the read address is “0”, the memory output 203 is A, and the 1H memory output 205 is X.
In this case, the signal 209 obtained by multiplying A by the coefficient 3/4 from the ROM (1) and the signal 207 obtained by multiplying X by the coefficient ¼ from the ROM (2) are added. In the line section where the memory output 203 and the 1H memory output 205 are the same, that is, when the read address is “2, 5 ...”, R
The coefficient of OM (1) becomes 0, and the 1H memory output 205 becomes an addition output as it is.

By such calculation, the new video signal 23 to be displayed on the wide aspect screen can be generated from the non-interlaced signal 15 for 395 lines.

Further, in the B2 mode, the roundness is 9
Since it is 4%, the scan line conversion may be performed by an operation of forming 4 lines to 5 lines (420 lines to 525 lines).
The right side of FIG. 6 shows the relationship between the read address output in the B1 mode and the coefficients of the ROMs (1) and (2). Also,
FIG. 8 shows the calculation result in this case. In the B1 mode, the memory output is "A to D, D to H, H ...",
It can be seen that the signal of one line is generated from the signal of four lines.

In this way, the NTSC signal can be displayed on the entire wide-aspect screen without lateral enormous feeling, and the screen can be effectively used.

In the B1 and B2 modes, the display method is such that the image center always coincides with the center of the screen. This is the positioning of the 67th line in each signal I, II, III, ... In one vertical scanning period (hereinafter referred to as 1V) in FIG. 5a. Therefore, if the video center is not selected, the scroll signal causes 0 to 13
By selecting the line in the range of 2 lines, B2
You can scroll the screen in the mode. B1
In the case of the mode, the line may be selected within the range of 0 to 105 lines.

FIG. 9 is a timing chart showing the scroll display selection operation. a is the vertical synchronization signal 13a
(VD), b is a scroll signal given to the write position determining circuit 210 in the B2 mode, c is an output 213 of the width determining circuit 212 in the B2 mode, and d is a write position determining circuit 210 in the B1 mode. The scroll signal to be given is the output 213 of the width determining circuit 212 in the B1 mode.
Are shown respectively. The display position can be switched by changing the position of generation of the pulse P1 in the scroll signal by, for example, a touch pen or address designation by a remote controller, and the pulse P3 corresponding to the 393 (420) line is displayed.
The position of (P4) can be freely changed, and the sampling signal can be changed to scroll.

By having such a scroll function,
In B1 and B2 modes, there is no missing image.
Moreover, the B1 and B2 modes are the same as those obtained by enlarging the signal having the aspect ratio of 3: 4, and the realism of the image is increased.

Further, the scroll signal and width determination circuit 2
The output 213 of 12 can be used to monitor the display position in the B1 and B2 modes on the screen. This allows the user to know where the NTSC screen is being extracted.

In the embodiment, the case where a signal suitable for a screen with an aspect ratio of 3: 4 is displayed on a screen with an aspect ratio of 9:16 has been described as an example, but signals having other aspect ratio relationships are also described. It can be easily applied to display.

Even if the number of scanning lines of the wide aspect screen does not match the number of scanning lines of the 3: 4 signal, for example, in the case of the relationship of 525 lines, 1125 lines and 1250 lines, or 625 lines and the above. It is easy to apply even in the case of the same line relationship with.

[0052]

As described above, according to the present invention,
A signal suitable for a vertically long screen is displayed on the entire wide-aspect screen, and the effective use of the screen has the effect of increasing the sense of realism of the image and increasing the product value.

[Brief description of drawings]

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

FIG. 2 is an explanatory view showing a display form of the present invention.

FIG. 3 is a configuration diagram showing the configuration of FIG. 1 in more detail.

FIG. 4 is a configuration diagram showing the configuration of FIG. 1 in more detail.

FIG. 5 is an explanatory view outlining a screen extracting process in the B2 mode according to the present invention.

FIG. 6 is an explanatory diagram illustrating a coefficient generation process for line calculation according to the present invention.

FIG. 7 is an explanatory diagram showing an addition process of the line calculation.

FIG. 8 is an explanatory diagram showing an addition process of the line calculation.

FIG. 9 is a timing chart showing a scroll display operation according to the present invention.

FIG. 10 is an explanatory diagram illustrating a conventional display form.

[Explanation of symbols]

10 ... NTSC input terminal, 12 ... NTSC decoder, 1
4 ... Non-interlaced conversion circuit, 16 left / right compression means,
22 ... Screen extracting means, 24, 26 ... Selector, 20 ...
Memory circuit (202 ... Memory, 204 ... 1H memory, 2
06 ... Coefficient ROM, 200 ... Adder, 21 ... Memory control circuit (210 ... Write position determining circuit, 212 ... Width determining circuit, 214 ... Write address generating circuit, 216 ... Read counter, 218 ... Read address generating circuit Two
20 ... multiplexer)

Claims (2)

[Claims] 1. A screen having a horizontal aspect ratio that is longer than a predetermined aspect ratio, displaying a video by a first video signal that matches the horizontal aspect ratio, and a second video that matches the predetermined aspect ratio. In a wide aspect television device capable of displaying an image by a signal, the second image signal is received, and the entire image obtained from this signal has a roundness of 100% at the predetermined aspect ratio. For displaying on the screen the first means for displaying on the screen, and for displaying a predetermined portion of the image obtained from the second video signal on the entire area of the screen in a state other than 100% circularity. And a selector for selecting one of the first means and the second means based on a user operation and displaying the screen on the screen. Id Aspect Television Equipment. 2. A screen having a horizontal aspect ratio that is longer than a predetermined aspect ratio, displaying a video by a first video signal that matches the horizontal aspect ratio, and displaying a second video that matches the predetermined aspect ratio. In a wide aspect television device capable of displaying an image by a signal, the second image signal is received, and the entire image obtained from this signal has a roundness of 100% at the predetermined aspect ratio. For displaying on the screen the first means for displaying on the screen, and for displaying a predetermined portion of the image obtained from the second video signal on the entire area of the screen in a state other than 100% circularity. Second means for receiving the second video signal, and first means for displaying the entire video obtained from this signal on the entire area of the screen, the first means, the second means or the front means. Any one of the third means selected based on the user operation, a wide aspect television apparatus characterized by comprising a selector for performing a display on the screen.