JP2000138908A - Television receiver and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the user-friendliness of the television receiver by deciding a superimposed position of a teletext menu on a television video image so as to display a prescribed part of the teletext menu based on at least one of program contents of a designated teletext program so as to synthesize an image signal of a menu image of the teletext menu with a television signal. SOLUTION: A system control section 11 controls a deflection system of a CRT 16 in response to a setting mode, a setting display size and a setting display position. In the case that a designated teletext is of a superimposed type and a display mode in this case is a normal mode or a full mode, a television video image on which a superimposed display of the designated teletext is overlapped is displayed on the CRT 16. A text control section 18 can display a setting display mode, a setting display size, a setting display position and a superimposed display of the designated teletext obtained based on a display setting information signal 87 on a display screen of the CRT 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver and a display method, for example, a wide television receiver equipped with a teletext decoder (aspect ratio 16: 9).
(A television receiver having the above display screen).

[0002]

2. Description of the Related Art Conventionally, in teletext, coded data obtained by coding screen data of a text program composed of characters, figures, and the like by a hybrid coding system combining a pattern transmission system and a character code transmission system. Is multiplexed with the program number (000 to 999) of the text program and program management information such as the program contents to be described later in the vertical blanking interval of the television signal and transmitted.

[0003] In teletext broadcasting, on the receiving side, program data of a desired text program is extracted from a television signal, decoded, and each character or figure obtained is standardized to a predetermined size. Are sequentially displayed at designated positions in the text broadcast screen, so that the text program can be viewed.

At present, such text broadcasting is
Normal teletext programs that display still text and graphics in the teletext screen, normal superimposed programs that display text and graphics that are stationary in the teletext screen with television video as the background, and television video background As a horizontal scrolling program that displays one line of characters and graphics scrolling from right to left at the bottom of the teletext screen, and a subtitle program that displays subtitles in the teletext screen with television video as the background. A text program of the program content is being broadcast.

[0005]

However, many conventional wide-screen television receivers have a display mode (hereinafter, referred to as a display mode) in which a television image having an aspect ratio of 4: 3 is stretched to an image having an aspect ratio of 16: 9. This is called a wide mode).

In practice, such a wide mode includes:
In the aspect ratio 4: 3, a first display mode (hereinafter, referred to as a first mode) in which a television image displayed as shown in FIG. 12A is simply stretched and displayed in the horizontal direction as shown in FIG.
When this is called a full mode, a second display mode (hereinafter, referred to as a full mode) in which the television image is uniformly enlarged as shown in FIG. 12C and only the center portion of the obtained enlarged image in the vertical direction is displayed. Is referred to as a zoom mode) and a third display mode (hereinafter, referred to as a wide zoom mode) in which both sides of the television image are compressed and displayed so that the aspect ratio of the central portion does not change as shown in FIG. And so on).

Further, in this type of wide television receiver, for example, a CR is set for a reference setting as shown in FIG.
The size of a vertical region of a television image displayed on the display screen 1 of T (Cathoderay Tube) (hereinafter, referred to as a display size) is shown in FIG.
13 (C-1) and FIG. 13 (C-2). The position of the area of the television image which is changed as shown in 2) or displayed on the display screen 1 of the CRT (hereinafter, referred to as a display position). ), A function to freely change the setting of the display area of the television image is provided.

In the wide television receiver, the display in the display mode set in this way (hereinafter referred to as a setting display mode), the set display size and the display position (hereinafter, these are set, respectively) are set. Display according to the display size and the set display position) is performed by controlling the deflection system of the CRT.

[0009] This is a character of a type (hereinafter, referred to as a superimposed type) in which characters and graphics are superimposed and displayed on television images such as a superimposed program, a horizontal scrolling program and a subtitle program. The same is true when displaying a program, and a video is generated by superimposing a teletext screen on the center position of a 525-line television image (hereinafter referred to as an original television image) obtained based on a television signal. Then, the deflection system of the CRT is controlled so that the display can be performed in accordance with the setting display mode, the setting display size, and the setting display position.

However, among the superimposed type text programs, characters and figures are displayed at the bottom of the text broadcast screen in the horizontal scroll program. Also, even in a subtitle program, characters and graphics are often displayed below the teletext screen.

For this reason, in such a wide television receiver, for example, when the zoom mode or the wide zoom mode is set as the display mode, or depending on the setting of the display size and the display position in these display modes, for example, FIG. (C) and superimposed display 2 of a subtitle program or a horizontal scrolling program as shown in FIG.
May not be displayed at all, or the text program may not be able to be viewed because the lower half is missing.

In such a case, the superimposed display 2 can be displayed on the display screen 1 of the CRT by changing the set display size and the set display position, for example. The operation is complicated. Accordingly, when the television receiver is considered as a home appliance used for a wide generation from children to the elderly, further improvement in usability in this respect is desired.

The present invention has been made in view of the above points, and it is an object of the present invention to propose a television receiver capable of significantly improving the usability and a display method capable of significantly improving the usability of the television receiver. Is what you do.

[0014]

According to the present invention, an image signal generating means for generating an image signal of a screen image of a text broadcast screen of a text program in a television receiver is provided. In the case where the text program is a program content in which a text broadcast screen is superimposed on a television image and displayed, at least one of the set display mode, display size and display position and the program content of the specified text program. Position determining means for determining a superimposition position of the teletext screen on the television image so that a predetermined portion of the teletext screen is displayed based on the teletext screen, and a screen image of the teletext screen according to the determination result. A synthesizing means for synthesizing the image signal and the television signal is provided.

As a result, in this television receiver, even if the specified text program is a program content in which a text broadcast screen is superimposed on a television image and displayed, no troublesome operation is performed without any troublesome operation. A predetermined portion of the teletext screen can be displayed.

Further, in the present invention, in the display method, a first step of generating an image signal of a screen image of a teletext screen of the teletext program, and superimposing the teletext screen on the television video of the designated teletext program If the program content is to be displayed on the display, a predetermined portion of the teletext screen is displayed based on at least one of the set display mode, display size and display position, and the program content of the specified text program. Thus, the second step of determining the superposition position of the teletext screen on the television image, and the third step of combining the image signal of the screen image of the teletext screen and the television signal in accordance with the determination result Steps are provided.

As a result, according to this display method, even when the specified text program is a program content in which a text broadcast screen is superimposed on a television picture and displayed, no troublesome operation is performed without any troublesome operation. A predetermined portion of the teletext screen can be displayed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) Configuration of Wide Television Receiver According to this Embodiment In FIG. 1, reference numeral 10 denotes a wide television receiver according to this embodiment as a whole, which is located at a predetermined position of a housing (not shown). The system control unit 11 controls a corresponding circuit based on a command C1 input by operating an operation button provided or operating a remote controller (not shown), so that the TV is set to a designated state. John video and text programs can be displayed.

In practice, the system control unit 11 controls the first tuner 12A to select a designated channel in a single-screen display mode for displaying one channel of television image on one screen. As a result, the first tuner 12A selects the television broadcast signal S1 of the corresponding channel from all the television broadcast signals S1 receivable via the antenna 13, and demodulates the same.
The first video signal S2A thus obtained is switched to the switcher 1
4

At this time, the switcher 14 selects the first video signal S2A under the control of the system control unit 11,
This is sent to the signal synthesizing unit 15 as a selection signal S3.
Further, under the control of the system control unit 11, the signal synthesis unit 15 converts the supplied selection signal S3 as it is into the synthesized signal S4.
To the CRT 16.

Thus, in the wide television receiver 10, the composite signal S
4 is displayed on the CRT 16 in one screen.

In the case of the wide-screen television receiver 10, a normal display mode in which a television image having an aspect ratio of 4: 3 is displayed at the same aspect ratio as a display mode in the one-screen display mode, and an aspect ratio A full mode (FIG. 12B), a zoom mode (FIG. 12C), and a wide zoom mode (FIG. 12) for displaying a 4: 3 television image with an aspect ratio of 16: 9.
There are three wide modes (D), and a desired display mode can be selected and set from these display modes.

In the case of the wide-screen television receiver 10, the setting can be changed by 15 steps in a direction for enlarging and reducing the display size of the television image displayed on the CRT 16, and the display position of the television image can be changed up and down. The setting can be changed by 15 steps in each direction.

The wide television receiver 10
Then, the system control unit 11 controls the deflection system of the CRT 16 in accordance with the setting display mode, the setting display size, and the setting display position, so that the television image corresponding to the setting display mode, the setting display size, and the setting display position is displayed. CR
It can be displayed at T16.

On the other hand, in the two-screen display mode for displaying television images for two channels on two screens, the system control section 11 selects the first and second tuners 12A and 12B to different designated channels. Control.

As a result, the first and second tuners 12A,
12B selects a television broadcast signal S1 of a corresponding channel from among all the television broadcast signals S1 receivable via the antenna 13, demodulates the same, and obtains the first and second video signals thus obtained. S2
A and S2B are sent to the two-screen generation unit 17.

At this time, under the control of the system controller 11, the two-screen generator 17 generates the first and second video signals S2
A video signal in which two television images based on A and S2B are displayed on two screens is generated and sent to the switcher 14 as a two-screen video signal S5.

At this time, the switcher 14 selects the two-screen video signal S5 under the control of the system control section 11, and sends it to the signal synthesizing section 15 as a selection signal S3. Further, under the control of the system control unit 11, the signal synthesizing unit 15 sends the supplied selection signal S3 as it is to the CRT 16 as a synthesized signal S4.

Thus, in the wide television receiver 10, in the second image display mode, the composite signal S4
, Television images of the designated two channels are displayed on the CRT 16 on two screens.

On the other hand, when a display command for a text program is input in the one-screen display mode or the two-screen display mode, the system control unit 11 responds to the input by inputting the command.
2B is controlled. Further, the system control unit 11 sends a display setting information signal S6 indicating the setting display mode, the setting display size, and the setting display position at this time to the text control unit 18.

As a result, the second tuner 12B selects the television broadcast signal S1 of the same channel as the channel selected by the first tuner 12A at this time, and demodulates it. Video signal S
2B is sent to the text control unit 18 and the graphic control unit 19, respectively.

The text controller 18 extracts the program data of each character program multiplexed in the vertical blanking interval of the second video signal S2B, decodes and stores the data, and also stores each of the stored program data. Based on the program data of a designated character program (hereinafter, referred to as a designated character program) among the program data of the character program, image data of a character broadcast screen of the designated character program is generated.

At this time, the text control unit 18 detects the type of the designated character program based on the program data of the designated character program, and detects the setting display mode based on the display setting information signal S6. Depending on the following 3
Perform the following processing.

That is, when the type of the designated character program is not the superimpose type (that is, when the content of the designated character program is a normal character broadcast program, the text control unit 18 sets the mode in this case to the first character broadcast Display mode), the text broadcast screen of the designated character program is displayed on the CRT as shown in FIG. 2B regardless of the setting display mode.
The image data D1 of the screen image to be displayed as the sub-screen 22 on the right side of the 16 display screen 21 is generated based on the program data of the designated character program, and this is generated in the VRAM (Vide).
o Random Access Memory) 20.

The text control unit 18 determines the number of horizontal synchronizing signals from the vertical synchronizing signal,
A timing setting signal S7 for setting whether to read the image data D1 from the AM 20 is sent to the graphic control unit 19.

Thus, at this time, the graphic control unit 19 determines, based on the timing setting signal S7,
After the vertical synchronizing signal of the second video signal S1B is input, VR is set at the timing when the set number of horizontal synchronizing signals arrive.
The image data D1 stored in the AM 20 is sequentially read out from the head address thereof, and is converted into an analog signal to obtain R (red).
It is sent to the signal synthesizing unit 15 as a character program image signal S8 in the form of a G (green) B (blue) signal.

At this time, the system control section 11 controls the two-screen generation section 17 so that the television based on the first video signal S2A output from the first tuner 12A as shown in FIG. An image signal of a screen image for displaying an image as a main screen 23 on the left side of the display screen 21 of the CRT 16 is generated, and this is generated by the switcher 1.
4 to the signal synthesizing unit 15 as the selection signal S3.

The signal synthesizing section 15 outputs the selection signal S
2 and the character program image signal S8, the main screen 23 is displayed on the left side of the display screen 21 as shown in FIG. 2C, and the sub screen 22 is displayed on the right side. A signal is generated and sent to the CRT 16 as a composite signal S4.

Thus, when the designated character program is not of the superimposed type, the television image is displayed on the main screen 23 and the character program is displayed on the sub-screen 22 regardless of the setting display mode. An image is displayed on the CRT 16.

On the other hand, the text control unit 18 determines that the designated character program is of the superimpose type and that the setting display mode is the normal display mode or the full mode (FIG. 12B) In the second teletext display mode, the control signal S9 is sent to the system control unit 11 and the image data D1 of the teletext screen 24 of the specified teletext program as shown in FIG. This is stored in the VRAM 20.

Further, the text control unit 18 controls the image data D1 stored in the VRAM 20 so that the teletext screen 24 can be superimposed on a predetermined position of the original television image (the position indicated by a dashed line in FIG. 5). An address setting signal S7 for setting the read timing of the data is sent to the graphic control unit 19.

Thus, at this time, based on the address setting signal S7, the graphic controller 19 sets the VR at the timing when the set number of horizontal synchronizing signals arrive after the vertical synchronizing signal of the second video signal S2B is input.
The image data D1 of the above-mentioned teletext screen 24 stored in the AM 20 is read out from the head address thereof, converted into an analog signal, and converted into a text program image signal S8.
5

At this time, the system control section 11 selects the first video signal S2A output from the first tuner 12A by controlling the switcher 14 based on the control signal S9 given from the text control section 18. This is sent to the signal synthesizing unit 15 as the selection signal S3.

The signal synthesizing section 15 synthesizes the supplied selection signal S3 and text program image signal S8 to obtain a signal shown in FIG. 3A based on the selection signal S3 (ie, the first video signal S2A). FIG. 3 obtained on the original television picture 25 based on the text program image signal S8.
An image signal of a video 26 as shown in FIG. 3C in which the teletext screen 24 of FIG.
4 and transmitted to the CRT 16.

At this time, the system controller 11 controls the deflection system of the CRT 16 in accordance with the setting display mode, the setting display size, and the setting display position.

Thus, when the designated character program is of the superimposed type and the display mode set at this time is the normal display mode or the full mode,
For example, a television image 27 on which a superimposed display 29 of a designated character program is superimposed as shown in FIG.

On the other hand, the text controller 18 determines that the designated character program is of the superimpose type and the setting display mode is the zoom mode (FIG. 12C) or the wide zoom mode (FIG. 12D) ( Hereinafter, the mode in this case is referred to as a third teletext display mode). In the same manner as in the second teletext display mode, the teletext screen 24 of the specified teletext program as shown in FIG. Image data D1 is generated based on the program data of the designated character program, and
It is stored in the RAM 20.

At this time, the text control unit 18 responds to the setting display mode, the setting display size and the setting display position obtained based on the display setting information signal S7, and the program contents of the designated character program, for example, as shown in FIG. As shown in FIG. 5, the superimposed display 29 of the designated character program can be reliably displayed on the display screen 21 of the CRT 16, and the character broadcast screen 24 of the designated character program can be superimposed on the position shown by the broken line in FIG. The timing (the number of horizontal synchronization signals from the vertical synchronization signal) is calculated, and the calculation result is sent to the graphic control unit 19 as the timing setting signal S7.

Thus, the graphic control unit 19
Based on the timing setting signal S7, the VRAM 2 is set at a timing when a set number of horizontal synchronization signals have arrived after the vertical synchronization signal of the second video signal S2B is input.
The image data D1 of the screen image of the designated character program stored in 0 is read from the designated address position, and is converted into an analog signal and sent to the signal synthesizing unit 15 as the character program image signal S8.

At this time, the first video signal output from the first tuner 12A is supplied to the signal synthesizing section 15 under the control of the system control section 11 in the same manner as in the second teletext display mode. S2A is selected by the switcher 14 and given as a selection signal S3.

Thus, the signal synthesizing section 15 synthesizes the supplied selection signal S3 (first video signal S2A) and text program image signal S8, thereby obtaining a signal based on the selection signal S3 as shown in FIG. An image signal of the video 30 is generated by superimposing a teletext screen 24 obtained based on the text program image signal S8 on the original television video 25 to be obtained, and this is sent to the CRT 16 as a composite signal S4.

At this time, the system control section 11 controls the deflection system of the CRT 16 according to the setting display mode.

As a result, even when the designated character program is of the superimpose type and the setting display mode is the zoom mode or the wide zoom mode, as shown in FIG. The television image 31 in which the superimposed display 29 of the designated character program is reliably displayed regardless of the setting display mode and the program content is displayed on the CRT 16.

In the case of this embodiment, the system control unit 11 changes the setting display mode to the zoom mode or the wide zoom mode while displaying the superimposed type text program, or displays the third text broadcast display. Even when the setting display size and the setting display position are changed in the mode, the new setting display mode, setting display size and setting display position are sent to the text control unit 18 as the display setting information signal S6.

At this time, the text control unit 11 stores the new setting display mode, setting display size and setting display position obtained based on the display setting information signal S6, and the text control program 11 in accordance with the contents of the text program. A new timing for reading the image data D1 on the teletext screen 24 of the specified teletext program is calculated in the same manner as described above for the third teletext display mode, and the calculation result is used as the timing setting signal S7 in the graphic control unit 1.
9

Thus, in the wide television receiver 10, the setting display mode is changed to the zoom mode or the wide zoom mode while the superimposed type text program is displayed, or the setting is made in the third teletext display mode. Even when the display size and the setting display position are changed, the superimposed display 29 of the text program is displayed.
(FIG. 4D) can be surely displayed on the display screen 21 (FIG. 4D) of the CRT 16.

(2) Configuration of Text Control Unit 18 In practice, the text control unit 18 has the superimposed display 29 of the designated character program in the third teletext display mode as described above (see FIG. 4D). ) Can be reliably displayed on the display screen 21 of the CRT 16 (FIG. 4D), and the timing is calculated such that the teletext screen 24 of the designated text program can be superimposed on the position indicated by the broken line in FIG. As means, as shown in FIG. 6, a screen position determination processing unit 40 having a microcomputer configuration and a memory 41 are provided therein.

The memory 41 stores a reference value (the number of horizontal synchronization signals) of the display size and the display position in the zoom mode and the wide zoom mode, and an offset value for each program content determined by the program content of the text program. (The number of horizontal synchronization signals) and a table of offset values (the number of horizontal synchronization signals) corresponding to each set value (+ m to -m) of the display size in the zoom mode and the wide zoom mode (hereinafter, this table is displayed) A table of the offset value (the number of horizontal synchronization signals) corresponding to each set value (+ n to -n) of each display position in the zoom mode and the wide zoom mode (hereinafter, this table is referred to as a size offset value table). (Referred to as a display position offset value table).

In this case, as the offset value of the teletext display screen 24 determined by the text of the text program,
For a normal superimposed program, as shown in FIG. 7, a value is selected so that the teletext screen 24 can be displayed immediately below the operation guide button 43 fixedly displayed at a predetermined position above the display screen 21 of the CRT 16. Have been.

When the specified text program is a horizontal scrolling program or a subtitle program, the lower end of the text broadcast screen 24 is located slightly above the lower end of the display screen 21 of the CRT 16 as shown in FIGS. Values are chosen to be
In addition, the wide television receiver 1 according to this embodiment
In the case of 0, the operation guide button 43 is not displayed for a subtitle program.

When the designated character program is of the superimposed type and the setting display mode is the zoom mode or the wide zoom mode, the screen position determination processing section 40 adds the designated character program to the program data. An offset value corresponding to the program content of the text program obtained based on the display setting information signal S6, a reference value corresponding to the setting display mode obtained based on the display setting information signal S6, and a display size offset value table and a display position offset value table. The set display size and each offset value with respect to the set display position are sequentially added, and the addition result is sent to the graphic control unit 19 as the above-described timing setting signal S7.

As a result, the text controller 18 displays the teletext screen 24 at a position offset by an optimum offset amount according to the setting display mode, the setting display size and the setting display position, and the contents of the designated character program. The graphic control unit 19 has a VRAM2
0 so that the image data D1 can be read out,
Thus, the superimposed display 29 of the normal super program, the horizontal scroll program, and the subtitle program can always be displayed on the display screen 21 of the CRT 19.

(4) Display state detection processing procedure and text broadcast screen display position change processing procedure Here, the screen position determination processing section 40 of the text control section 18
Detects whether there is a change in the setting display mode, the setting display size, and the setting display position in accordance with the display state detection processing procedure RT1 shown in FIG.

That is, the screen position determination processing section 40
In the third teletext display mode, after the display state change detection processing procedure RT1 is started in step SP1, in subsequent steps SP2, SP3 and SP4, is the display mode changed to the zoom mode or the wide zoom mode, respectively? It is sequentially determined whether or not the setting display size has been changed and whether the setting display position has been changed.

When the screen position determination processing section 40 obtains a negative result in each of the steps SP2 to SP4, the screen position determination processing section 40 returns to the step SP2 and thereafter returns to the step SP2.
The loop of steps SP2-SP3-SP4-SP2 is repeated until a positive result is obtained in any of FIGS.

On the other hand, the screen position determination processing section 40
If a positive result is obtained in any of steps SP2 to SP4, the process proceeds to step SP5 to select the teletext display position change processing procedure RT2 shown in FIG.

Then, the screen position determination processing section 40 executes this teletext display position change processing procedure RT2 in step SP10.
In step SP11, the reference position of the corresponding setting display mode is read from the memory 41 in step SP11.

Subsequently, the screen position determination processing section 40 proceeds to step SP12, selects an offset value corresponding to the program content from the memory 41, and adds this value to the reference position acquired in step SP11.

Next, the screen position determination processing section 40 proceeds to step SP13 and selects a corresponding offset value from the display size offset value table according to the setting display mode and the setting display size obtained based on the display setting information signal S6. Are added to the addition result of step SP12.

Subsequently, the screen position determination processing section 40 proceeds to step SP14 and selects a corresponding offset value from the display position offset value table according to the setting display mode and the setting display position obtained based on the display setting information signal S6. Then, this is added to the addition result of step SP13.

Further, the screen position determination processing section 40 thereafter proceeds to step SP15, sends the addition result of step SP14 to the graphic control section 19 as a timing setting signal S7, sets it, and then proceeds to step SP16. This teletext display position change processing procedure R
Terminate T2.

(4) Operation and Effect of the Present Embodiment In the above configuration, the wide television receiver 1
0, the setting display mode and the setting display size are set when the designated character program is of the superimpose type and the setting display mode is the zoom mode or the wide zoom mode when the display command of the character program is input. An image 30 (FIG. 4 (C)) in which the teletext screen 24 is superimposed on the original television image 25 (FIG. 4C) while being vertically offset from the reference position by the number of lines corresponding to the setting display position and the program content. 4 (C)), and displays the video 30 on the display screen 21 of the CRT 16 in a state according to the setting display mode.

In the wide television receiver 10, the setting display mode is changed to the zoom mode or the wide zoom mode while the superimposed type text program is displayed, or the setting display is performed in the third teletext display mode. Even when the size and the setting display position are changed, the teletext screen 24 is offset in the vertical direction in the same manner as described above, and the original television image 25 (FIG. 4C).
Then, an image 30 (FIG. 4C) superimposed on the image is generated, and the image 30 is displayed on the display screen 21 of the CRT 16 in a state according to the setting display mode.

Therefore, this wide television receiver 10
In the case, when the designated character program is a superimpose type and the setting display mode is the zoom mode or the wide zoom mode, complicated operations such as changing the setting display mode, the setting display size, and the setting display position are performed. The superimposed display 29 (FIG. 4 (D)) of the designated character program is always reliably displayed on the CRT without requiring
It can be displayed on the 16 display screens 21.

According to the above configuration, when the designated character program is of the superimpose type and the setting display mode is the zoom mode or the wide zoom mode, the setting display mode, the setting display size and the setting display position are set. The teletext screen 24 is superimposed on the original television picture 25 by being vertically offset from the reference position by the number of lines corresponding to the program contents, so that complicated operations are not required. , A superimpose display 29 of a text program of a superimpose type (FIG. 4)
(D)) can always be surely displayed on the display screen 21 of the CRT 16, and thus a wide-screen television receiver which can greatly improve the usability can be realized.

(5) Other Embodiments In the above-described embodiment, a case has been described in which the present invention is applied to the wide television receiver 10 having a display screen with an aspect ratio of 16: 9. However, the present invention is not limited to this. In short, the present invention can be widely applied to various other television receivers having a function of displaying a text program having a program content in which a teletext screen is superimposed on a television image and displayed. it can.

In the above embodiment, the image signal generating means for generating the image signal of the screen image of the teletext screen of the text program, and the position determining means for determining the superposition position of the teletext screen on the television image Has been described as being constituted by the same text control unit 11, but the present invention is not limited to this, and the image signal generating means and the position determining means may be formed separately.

Further, in the above-described embodiment, when the specified character program is a superimposed type, all of the setting display mode, the setting display size and the setting display position, and the program contents of the specified character program are used. Although the case where the superimposition position of the teletext screen on the television image is determined in consideration of the above, the present invention is not limited to this, and the setting display mode, the setting display size and the setting display position, and the designated character The superposition position of the teletext screen on the television image may be determined based on at least one of the program contents of the program.

Further, in the above-described embodiment, a case has been described in which a normal super program, a horizontal scroll program, and a subtitle program are displayed as shown in FIGS. 7 to 9, respectively. However, the present invention is not limited to this. In short, if a predetermined portion of the teletext screen is displayed so that the superimposed display of the text program is displayed on the display screen 21 of the CRT 16, the display form of the normal super program, the horizontal scroll program, and the subtitle program is In addition, various other display modes can be widely applied.

Further, in the above-described embodiment, in accordance with a predetermined calculation result of the text control unit 18, the character program image signal S8 and the television image 25 (FIG. ) Video signal S
Although a case has been described in which the combining means for combining 2A is configured by the graphic control unit 19 and the signal combining unit 15, the present invention is not limited to this, and various other configurations can be widely applied.

[0082]

As described above, according to the present invention, in a television receiver, an image signal generating means for generating an image signal of a screen image of a teletext screen of a text program, and the designated text program being transmitted to the television receiver. If the content of the program is such that a text broadcast screen is superimposed on the video and displayed, the text is displayed based on at least one of the set display mode, display size and display position, and the program content of the specified text program. Position determining means for determining a superposition position of the teletext screen on the television image so that a predetermined portion of the broadcast screen is displayed; and an image signal of a screen image of the teletext screen and the television according to the determination result. By providing the synthesizing means for synthesizing the signal, the designated text program is displayed by superimposing the text broadcast screen on the television image. In the case was the program content as well,
It is possible to reliably display a predetermined portion of the teletext screen without performing a complicated operation, and thus to realize a television receiver that can greatly improve the usability.

According to the present invention, in the display method,
A first step of generating an image signal of a screen image of a teletext screen of a teletext program, and setting if the specified teletext program is a program content in which a teletext screen is superimposed on a television image and displayed. The teletext screen is superimposed on the television image such that a predetermined part of the teletext screen is displayed based on at least one of the display mode, the display size and the display position, and the program content of the specified teletext program. The second step of determining the alignment position and the third step of synthesizing the image signal and the television signal of the screen image of the teletext screen according to the result of the determination provide the second step. Even if the text program is a program content in which a text broadcast screen is superimposed on a television image and displayed, no complicated operations are required It can display a predetermined portion of the character broadcast screen, thus possible to realize a display method that can dramatically improving the usability of the television receiver.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a wide television receiver according to an embodiment.

FIG. 2 is a schematic diagram for explaining a method of displaying a teletext screen.

FIG. 3 is a schematic diagram for explaining a method of displaying a teletext screen.

FIG. 4 is a schematic diagram illustrating a method of displaying a teletext screen.

FIG. 5 is a schematic diagram for explaining offset display of a teletext screen.

FIG. 6 is a block diagram illustrating a partial configuration of text control.

FIG. 7 is a schematic diagram for explaining a display position of a normal super program.

FIG. 8 is a schematic diagram for explaining a display position of a horizontal scrolling program;

FIG. 9 is a schematic diagram for explaining a display position of a subtitle program.

FIG. 10 is a flowchart illustrating a display state change detection processing procedure;

FIG. 11 is a flowchart showing a procedure for changing a teletext display position.

FIG. 12 is a schematic diagram for explaining a display mode of a television image in various wide modes.

FIG. 13 is a schematic diagram for explaining setting of various display areas for a television image.

FIG. 14 is a schematic diagram for explaining a display position of a superimposed display in various wide modes.

[Explanation of symbols]

10 wide television receiver, 11 system controller, 12A, 12B tuner, 14 switcher, 15 signal synthesizer, 16 CRT, 18
Text control unit, 19 Graphic control unit, 20 VRAM, 21 Display screen, 24 Teletext screen, 25 Original television image, 40 Screen position determination processing unit, 41 Memory , RT1... Display state change detection processing procedure, RT2... Teletext display position change processing procedure, S1... Television broadcast signal, S2A, S
2B ... video signal, S5 ... composite signal, S6 ... display setting information signal, S7 ... timing setting signal, S8 ... text program image signal, D1 ... image data.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/445 (72) Inventor Satoshi Matsushita 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sony Corporation (72) Inventor Masafumi Seko 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo F-term within Sony Corporation (reference) 5C023 AA02 AA04 AA14 AA18 BA11 BA15 CA01 CA05 DA04 5C025 BA14 BA28 CA06 CA10 CA11 5C063 AA20 AB01 AB07 AC01 BA14 CA25 DA03 DB02 EA05 EB37 EB38 EB40 EB46 5C082 AA02 BA02 BB12 CA52 CA56 CB01 CB06 MM09

Claims (4)

[Claims] An image for generating an image signal of a screen image of a text broadcast screen of a specified character program by extracting and decoding program data of a specified character program multiplexed and transmitted to a television signal. Signal generation means, when the specified text program is a program content in which the text broadcast screen is superimposed and displayed on a television image based on the television signal, a set display mode, a display size, and A superimposition position of the teletext screen on the television image so that a predetermined portion of the teletext screen is displayed based on at least one of a display position and the program content of the specified teletext program. Position determining means for determining the image signal and the image signal of the screen image of the teletext screen according to the determination result of the position determining means Television receiver, characterized in that it comprises a synthesizing means for synthesizing the revision signal. 2. The method according to claim 1, wherein the position determining means changes the display mode, the display size, or the display position based on the new display mode, the display size, or the display position. The television receiver according to claim 1, wherein a superposition position of the teletext screen is determined. 3. An image signal of a screen image of a teletext screen of the specified text program is extracted and decoded by extracting and decoding program data of a specified text program multiplexed and transmitted to a television broadcast signal. A first step, when the specified text program is a program content in which the text broadcast screen is superimposed and displayed on a television image based on the television signal, a set display mode and display size And superimposing the teletext screen on the television image so that a predetermined part of the teletext screen is displayed based on at least one of a display position and the program content of the specified teletext program. A second step of determining a position; and, according to the determination result, the image signal of the screen image of the teletext screen and the television program. Display method characterized in that it comprises a third step of combining the signals. 4. In the second step, when the display mode, the display size, or the display position is changed, the television image is displayed on the basis of a new display mode, the display size, or the display position. 4. The display method according to claim 3, wherein an overlapping position of the teletext screen is determined.