JPH03201881A - Television receiver - Google Patents

Abstract

PURPOSE:To keep the balance of layout of display information in a picture display area by switching automatically the display mode of displaying a current display pattern to the left side of the picture display area into the display mode of displaying a current display pattern to the central side of the picture display area when the sent character information is the title information. CONSTITUTION:A synthesis pattern control circuit 39 synthesizes the pattern for a television pattern and character information so as to display title character information onto a title display area Rs. When a synthesis pattern control signal to switch the display mode automatically is fed from a terminal 40 in this state, a display form conversion circuit 35 converts the title character information from the horizontal writing display form into the vertical writing display form. Moreover, the synthesis pattern control circuit 39 synthesizes the character information onto the current standard television pattern so as to be displayed on the title display area Rs.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) This invention utilizes the empty space created in the image display area due to the difference in aspect ratio between the image display area and the television screen. The present invention relates to a television receiver that displays text information.

(Conventional technology) Newly developed HDTV system and ED to improve image quality
In high-definition television broadcasting systems such as the TV system, compatibility with current standard television broadcasting systems is taken into consideration. This is because the current standard television broadcasting system and high-definition television broadcasting system are likely to exist for the time being.

By the way, when a current standard television screen is displayed in the image display area of a high-definition display, an empty area is created due to the difference in aspect ratio between the two screens.

In JP-A No. 62-26378 (hereinafter referred to as the document),
A high-definition television receiver that displays text information using this free space has been disclosed.

Figure 6 shows the high-definition television receiver 1 described in this document.
FIG.

In the figure, a current standard television signal input from an input terminal 11 is supplied to a signal conversion circuit 12 and a character multiplex signal separation processing circuit 13. The signal conversion circuit 12 performs scanning line conversion of the current standard television signal and outputs a current standard television screen that can be displayed on the high-definition display 18. The character multiplex signal separation processing circuit 13 separates the character multiplex signal from the current standard television signal and outputs character data.

Output of signal conversion circuit 12 and character multiplex signal separation processing circuit 1
The outputs of No. 3 are screen-composed by a composite screen creation circuit 15 and supplied to a high-definition display 18. This results in
In the image display area of the high-definition display 18, a current standard television screen and a teletext screen are displayed in a combined state.

Note that 14 selectively selects character data of teletext broadcasting, character data manually input from outside the television receiver via terminal 19, and character data output from character information generation circuit 20 inside the television receiver. This is a character information selection circuit that selects character information and supplies it to the composite screen creation circuit 15.

Further, 16 is a control circuit that controls screen composition.

Further, reference numeral 17 denotes a switching circuit which selects either one of the output of the composite screen creation circuit 15 and the high-definition television signal manually inputted from the input terminal 21 and supplies the selected signal to the high-definition display 18 .

FIG. 7 is a diagram showing the current standard television screen and the display area of character information.

In the figure, R is an image display area of the high-definition display 18. This image display area R is divided into two areas R, .

A current standard television screen is displayed in the first divided area R1, and text information is displayed in the second divided area R2.

Here, the display form of character information in the second divided region R2 will be explained.

In order to explain this, first, a display format in which text information obtained from a text multiplex signal of current standard television broadcasting is displayed on a current standard display will be described with reference to FIG.

FIG. 8(a) shows a display form when the teletext program is a normal full-screen program.

In the figure, 25 is a current standard display, and R is an image display area of this current standard display 25. P is a header text display section of the character information display screen, and P2 is also a duty display section.

The display positions of characters and graphics on the character information display screen are specified based on a unit coordinate system 26 called a unit screen assumed for the physical screen of the image display area R. In addition, the number of characters in the header text display area P is 31 characters (one line) in both standard horizontal writing mode and high-density horizontal writing mode, and the number of characters in the main text display area P2 is 120 characters (15 characters x 8 lines) in standard horizontal writing mode. ), 49 in high-density horizontal writing mode
It is 6 characters (31 characters x 16 lines).

FIG. 8(b) shows a display form when the teletext program is a subtitled program.

In this case, the current standard television screen is displayed in the image display area R. The text information screen is displayed in a subtitle display area R5 set at the bottom of the image display area R.

FIG. 9 is a diagram showing a display form when a character information screen of current standard television broadcasting is displayed in the second divided area R2 of the high-definition display 18.

When the teletext program is a full-screen display program, the text information screen is displayed in a full-screen display region R21 with an aspect ratio of 3:4 set at the bottom of the second divided region R2. on the other hand,
When the teletext program is a subtitle program, the teletext screen is superimposed horizontally in a one-line subtitle display area R2□ set at the bottom of the second divided area R2.

As mentioned above, in the high-definition television receiver described in the above document, due to the difference in aspect ratio between the image display area R of the high-definition display 18 and the current standard television screen, The resulting empty area (second divided area R2) is used to display text information.

However, this high-definition television receiver displays the current standard television screen by shifting it to the left side of the image display area R, so text information that requires only a small display area, such as subtitle information, is left unused. When displaying in the area,
There is a problem in that the displayed information on the screen is shifted to the left side of the image display area R, giving the receiver a sense of imbalance in the arrangement of the displayed information.

This sense of imbalance is especially accentuated in a configuration in which speakers are placed on both sides of the display, so it must be resolved as soon as possible.

(Problems to be Solved by the Invention) As described above, in the high-definition television receiver described in the above-mentioned document, when character information that requires only a small area is displayed in an empty area, the display information There was a problem in that it gave a sense of imbalance in the arrangement.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a television receiver that does not give a sense of imbalance in the arrangement of displayed information even when character information that requires only a small area is displayed in an empty area. .

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the present invention displays a television screen so as to be closer to one end of an image display area,
means for displaying text information using a portion where said television screen is not displayed, said television screen displaying using a central portion of said image display area, and said text information using a portion where said television screen is not displayed; and a means for switching between the two display means depending on whether or not the character information requires only a small display area.

(Operation) In the above configuration, when the text information requires only a small display area, a display form is set in which the television screen is displayed in the center of the image display area. On the other hand, if the image requires a large display area, a display format is set in which the television screen is displayed closer to one end of the image display area. Therefore, even when displaying text information that requires only a small display area, the television screen is set at the center of the image display area, so it is possible to maintain a balance in the arrangement of display information in the image display area. I can do it.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention.

In the following description, the case where the present invention is applied to a high-definition television receiver capable of receiving current standard television signals will be exemplified.

In the figure, 31 is an input terminal to which a current standard television signal is supplied. This current standard television signal is supplied to a signal conversion circuit 32 and a character multiplex signal separation processing circuit 33.

34 is an input terminal to which a high-definition television signal is supplied. This high-quality television signal is supplied to a switching circuit 43 and the character multiplex signal separation processing circuit 33, which will be described later.

The signal conversion circuit 32 performs scanning line conversion of the human signal to obtain a current standard television signal that can be displayed on a high-definition display 44, which will be described later.

The character multiplex signal separation processing circuit 33 separates the character multiplex signal from the human input signal. This character multiplex signal includes character data and control data. Character data is converted from code data to display data. The control button includes address control data and management data.

The character data is supplied to a display format conversion circuit 35.

On the other hand, the control data is supplied to the subtitle program detection circuit 36. The subtitle program detection circuit 36 detects whether the teletext program is a subtitle program based on the control data. This detected horn is supplied to a display format conversion circuit 35 and a composite screen control circuit 39. The composite screen control circuit 39 outputs a control signal for controlling screen composition based on the detection output of the subtitle program detection circuit 36 and the composite screen control signal applied from the terminal 40. This control signal is transmitted to the composite screen creation circuit 38, the display format conversion circuit 35, and the character information selection circuit 3.
7, supplied to the character information generation circuit 41.

FIG. 2 shows a synthesized screen obtained by screen synthesis based on this control signal. Here, the composite screen shown in FIG. 2(a) is the same as the composite screen shown in FIG. 9 described above.

In other words, the current standard television screen is displayed closer to the left side of the image display area R. On the other hand, Fig. 2(b)
In the composite screen shown in FIG. Second. Third
The screen is divided into three regions R, , R2, and R, and the current standard television screen is displayed in the first divided region R3 in the center.

The character information generating circuit 41 is provided inside the television receiver and generates character information such as channel numbers.

This character information generation circuit 41 is connected to the composite screen control circuit 39.
Based on the control signal output from the second divided region R2 in FIG. 2(a) and the second divided region R2 in FIG. 2(b). Third divided region R2,R.

Generates character information to be displayed.

The display format conversion circuit 35 is connected to the subtitle program detection circuit 36.
Based on the detection output of
) and (b), the format is converted for display in the subtitle display area R5. That is, the display format of the subtitle information is converted from the horizontal writing display format to the vertical writing display format.

The character information selection circuit 37 receives the output of the display format conversion circuit 35, the output of the character information generation circuit 41, and character data supplied to a terminal 42 from an external device (for example, a personal computer) of the television receiver. is supplied. The character information selection circuit 37 appropriately selects these three manual inputs based on control signals output from the three composite screen control circuits.

43 is the output and input terminal 34 of the composite screen creation circuit 38
This is a switching circuit that selects either one of the high-definition television signals given to the high-definition display 44 and supplies it to the high-definition display 44.

The operation in the above configuration will be explained.

Now, assume that a composite screen control signal is input from the terminal 40 to fix the display format to the display format shown in FIG. 2(b).

That is, assume that a synthetic screen control signal for fixing the television screen at the center of the image display area R is manually input.

In this case, the character information output from the character information generation circuit 41 and the character information output from the terminal 42 are processed by the composite screen creation circuit 38 into the second . The screen is synthesized with the current standard television screen so that it is displayed in the third divided areas R2 and R3. Further, the text information transmitted to be superimposed on the current standard television screen, that is, the subtitle information, is converted from the horizontal writing display format to the vertical writing display format by the display format conversion circuit 35. This converted output is then synthesized with the current standard television screen by the composite screen creation circuit 38 so that it is displayed in the subtitle display area Rs in FIG. 2(b).

Next, it is assumed that a composite screen control signal for automatically setting the display mode is manually input from the terminal 40.

In this case, if the character information output from the character multiplex signal separation processing circuit 33 is subtitle information, this character information is converted from a horizontal writing display format to a vertical writing display format by the display format conversion circuit 35. Further, the composite screen control circuit 39 sets the display format shown in FIG. 2(b). Therefore, the subtitle information in FIG. 2(b) is displayed in the subtitle display area R5. On the other hand, if the character information is composed of a header text and a main text as shown in FIG. 8(a), the display format conversion circuit 35 does not convert the display format. In addition, the composite screen control circuit 39
sets the display format shown in FIG. 2(a). Then, the composite screen control circuit 39 positions the character information in the full screen display area R21 in FIG. This display form continues as long as the text information sent does not change to subtitle information.

In this state, the display format is changed from the terminal 40 to the current display format.
In other words, assume that a composite screen control signal for fixing the display format shown in FIG. 2(a) is manually input.

In this case, the display format conversion circuit 35 does not convert the display format even if the sent character information is changed to subtitle information. In addition, the three composite screen control circuits input the character information of the subtitles to the ninth
The television screen and text information are synthesized on the screen so as to be displayed in the subtitle display area R22 in the figure.

In this state, when a composite screen control signal for automatically switching the display format is supplied from the terminal 40, the display format conversion circuit 35 converts the character information of the subtitle from the horizontal display format to the vertical display format. Further, the three composite screen control circuits set the display format shown in FIG. 2(b). Thereby, the text information is screen-composed with the current standard television screen so that it is displayed in the subtitle display area R5 in FIG. 2(b).

According to this embodiment described in detail above, even when subtitle information is displayed in the empty area caused by the difference in aspect ratio between the current standard television screen and the image display area R,
It is possible to prevent the recipient from feeling a sense of imbalance in the arrangement of displayed information.

This detects whether the text information sent is subtitle information, and if it is subtitle information, the current display screen is automatically changed from displaying on the left side of both image display areas R to displaying it in the center. This is because I switched to .

Furthermore, in addition to the above-described mode in which the display format is automatically switched, a fixed mode in which the display format is forcibly switched to a predetermined display format can also be set, so that the recipient can be provided with a display format of his or her preference.

FIG. 3 is a diagram showing a display form of a second embodiment of the invention.

In the previous embodiment, a case has been described in which the current standard television screen is displayed on the left side of the image display area R when the text information is not subtitle information.

In contrast, in this embodiment, as shown in FIG. 3(a), the current standard television screen is displayed on the right side.

In addition, in the previous embodiment, when displaying the television screen in the center of the image display area R, the subtitle display area R
3 is provided in the third divided region R3 on the right side.

On the other hand, in this embodiment, as shown in FIG. 3(b), it is set in the second divided region R5 on the left side.

Even in such a configuration, when the text information is subtitle information, the current standard television screen is displayed in the center of the image display area R, so that the same effect as in the previous embodiment can be obtained.

FIG. 4 is a circuit diagram showing the configuration of a third embodiment of the present invention.

In FIG. 4, the same parts as in FIG. 1 are given the same reference numerals.

In the previous embodiment, the case where the present invention was applied to a high-definition television receiver was explained.

On the other hand, this embodiment shows a case where the present invention is applied to a current standard television receiver.

Furthermore, in this embodiment, two forms are set as display forms of high-definition television images.

One is a form in which a high-definition television screen is displayed in the image display area R while maintaining its aspect ratio. One more
The first method is to trim the left and right sides of a high-definition television screen, correct it to the current standard aspect ratio, and then display it on the current standard display.

In FIG. 4, 51 and 52 are both input terminals for high-definition television signals.

A high-quality television signal input manually from the input terminal 51 is subjected to signal conversion such as scanning line conversion by the signal conversion circuit 32 . The screen of the high quality television signal thus obtained is displayed in the first divided area R3 set in the image display area R of the current standard display 54 shown in FIG. Here, FIG. 5(a) shows a form in which a high-definition television screen is displayed at the center of the image display area R in the vertical direction.

On the other hand, FIG. 6B shows a configuration in which a high-quality television screen is displayed, for example, on the upper side of the image display area R. In automatic display mode, if the text information is subtitle information, the fifth
If the display format shown in Figure (b) is set and it is not subtitle information,
The display format shown in FIG. 4(a) is set. On the other hand, in the fixed display mode, either one of FIGS. 5(a) and 5(b) is set by the recipient.

Note that when a high-quality television signal is displayed in the image display area R of the current standard display 54 while maintaining its aspect ratio, empty areas are created above and below the image display area, as shown in FIG. Therefore, in this case, there is no need to convert the display format of the subtitle information to a vertical writing format. Therefore, in this case, the display format conversion circuit 35 shown in FIG. 1 is not required.

Next, the high-definition television signal input from the input terminal 52 undergoes signal conversion such as scanning line conversion by the signal conversion circuit 53, and is then supplied to the high-definition display 54 via the switching circuit 43 to display the image. It is displayed in the entire area R.

Since this embodiment also has a display format switching function, it is possible to obtain the same effects as in the previous embodiment.

Although several embodiments of the present invention have been described above, the present invention is not limited to these embodiments.

For example, in the embodiment shown in FIG. 4, a case has been described in which the high-definition television screen is displayed close to the upper side of the image display area R, as shown in FIG. 5(b).

However, in the present invention, the display may be shifted to the lower side.

Furthermore, in the above description, a case has been described in which the present invention is applied to displaying subtitle information of teletext broadcasting. However, the present invention can also be applied to display of subtitle information other than teletext.

Furthermore, in the above description, the case where the present invention is applied to displaying subtitle information has been described. However, the present invention can also be applied to displaying text information other than subtitle information, as long as the text information requires only a small display area.

It goes without saying that the present invention can be modified in various other ways without departing from the spirit thereof.

[Effects of the Invention] As described above, according to the present invention, character information that can be displayed in a small area is displayed in an empty area caused by a difference in aspect ratio between a television screen and an image display area. Also, it is possible to prevent the recipient from feeling a sense of imbalance in the arrangement of the displayed information.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of a first embodiment of the present invention;
2 is a diagram showing the display format of FIG. 1, FIG. 3 is a diagram showing the display format of the second embodiment of the present invention, and FIG. 4 is a circuit diagram showing the configuration of the third embodiment of the present invention. 5 is a diagram showing the display format of FIG. 4, FIG. 6 is a circuit diagram showing the configuration of a conventional television receiver, and FIGS. 7 to 9 explain the display format of FIG. 6. This is a diagram for 31.34, 51.52...input terminal, 32,53.
... Signal conversion circuit, 33... Text multiplex signal separation processing circuit, 35... Display format conversion circuit, 36... Subtitle detection circuit, 37... Subtitle information selection circuit, 38... Composite screen creation Circuit, 39... Composite screen control circuit, 40.42
...Terminal, 41...Character information generation circuit, 43...
Switching circuit, 44... High quality display, 54...
Current standard display. (a) (b) Figure (a) (b) Figure 3 (a) R (b) Figure 5 Figure 8 Figure

Claims (2)

[Claims] (1) A television screen with a different aspect ratio from the image display area is displayed closer to one end of the image display area, and text information is displayed in an area where the television screen is not displayed. and a first display means for displaying the image display area using a first display means for displaying the television screen using the central part of the image display area, and displaying the text information using the central part of the image display area, and displaying the text information in the area where the television screen is not displayed. a second display means for displaying the text information using a display device; a detection means for detecting whether the text information requires only a small display area; and a detection means for detecting whether the text information requires only a small display area; If a detection result is obtained that the object is an object, the display format is switched to the display mode using the first display means, and if a detection result is obtained that the object requires a large display area, A television receiver comprising a switching means for switching a display form to a display form using the second display means. (2) A television screen with a different aspect ratio from the image display area is displayed closer to one end of the image display area, and text information is displayed in an area where the television screen is not displayed. and a first display means for displaying the above-mentioned image display area using the first display means, and for the above-mentioned both image display areas, the above-mentioned television screen is displayed using the central part of the above-mentioned image display area, and the above-mentioned text information is not displayed on the above-mentioned television screen. A second display means for displaying using a portion, and a display form by the first display means and a display by the second display means, regardless of the size of the display area required by the character information. A television receiver equipped with a switching means that can forcibly switch to either one of the formats.