JP3386304B2 - Television receiver having teletext playback device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television (TV) receiver capable of receiving teletext, and more specifically, data consisting of characters, figures and additional sounds during a vertical blanking period of a TV video signal. The present invention relates to a TV receiver having a special program presentation processing function such as automatically selecting a display mode when displaying a teletext for receiving and demodulating teletext data transmitted by superimposing on the TV screen.

[0002]

2. Description of the Related Art In the current teletext system, in order to obtain information on both a television image and a teletext program at the same time, there is one that converts a full fixed display screen of the teletext program into a sub-screen display or a telop display. Yes, as a method of selecting whether to display on a sub-screen or a telop at the time of conversion, the operator himself selects a display mode, as in Japanese Patent Application No. 6-188306, There are some things that must be set to display teletext programs in display mode.

FIG. 11 and FIG. 12 are block diagrams of a conventional teletext special reproduction device showing the CPU for performing special reproduction control as functional blocks. Below, based on FIG. 11 and FIG. 12, the processing at the time of displaying a small screen and displaying a telop will be briefly described. When receiving a teletext, first, the teletext capture control unit 11 captures all the teletext signals superimposed on a specific portion of the video signal, and after performing various processes on the signals, the page end determination is performed. The section 23 determines that the page has ended. At that time, the user specifies the special reproduction mode with the keyboard 15, the special reproduction flag 7c is set in the memory 7, and the special reproduction determination unit 18 determines whether the special reproduction flag 7c is set, When the flag 7c is set, the scroll display (telop display) is started by the trick play (scroll) display control unit 34 based on the presentation screen conversion table 7b created by the table creation unit 22. Here, the character data is the CG / ROM 3 in which the shape of the character corresponding to the character information is recorded via the memory 7.
Thus, the character information is converted into a video signal and output as a video signal via the TV / text broadcast display control unit 36. On the other hand, screen modes such as scroll display and full screen fixed display are discriminated by the display mode discriminating unit 37, and each screen mode is obtained through the special reproduction display control unit 34.

[0004]

As in the above-mentioned conventional example, in the present teletext receiving apparatus, in order to obtain information on both the television image and the teletext program at the same time,
Although the entire fixed display screen of teletext programs is converted to the sub-screen display or the telop display, the operator himself (manually) selects the display mode to display the sub-screen or the telop. However, there is a drawback that the display mode suitable for the teletext program must be determined and the display mode must be set by itself.

The present invention has been made in view of the above circumstances, and when the entire fixed display screen is converted to the sub-screen display or the telop display while the television image is displayed, the respective displays are displayed. It is an object of the present invention to provide a television receiver having a teletext special playback device that determines a display mode suitable for the content of a teletext program and automatically performs the conversion of the display mode.

[0006]

According to a first aspect of the present invention, a teletext signal is transmitted which is transmitted by superimposing data including characters and figures in a vertical blanking period of a television video signal,
In a television receiver capable of receiving a character broadcast that demodulates a received character broadcast signal into a reproduced video signal such as characters by a character broadcast reproduction device and displays it together with a television image,
When the teletext reproducing device receives a teletext signal added with display mode data designating a full-screen fixed display screen during the display of a television image, the teletext reproduction device uses the data received from other data contents of the teletext signal. and determining the display mode switching determining means whether to convert the display mode to any of the child screen display or telop display, based on the determination result of the display mode change judging means, converts the data of the teletext signal, it is determined By providing special reproduction control means for generating a reproduced video signal in the display mode described above, it is possible to automatically display the video by the teletext signal in the optimum display mode.

According to a second aspect of the present invention, in the first aspect of the present invention, whether or not the header sentence of the other teletext data determined by the display mode conversion determination means has a program type designated in advance. The display mode is automatically determined by.

According to a third aspect of the present invention, in the invention according to the first aspect, the display mode is changed depending on whether or not the other data contents judged by the display mode conversion judging means include the graphic graphic data. The automatic determination is made.

According to a fourth aspect of the present invention, in the invention according to the third aspect, when the photographic graphic data has a display area of only one line in one page of a teletext program, a telop display is performed. It is the one that is selected.

According to a fifth aspect of the present invention, in the first aspect of the invention, the display mode is determined depending on whether or not the other data contents judged by the display mode conversion judging means include data of a geometric figure. Is automatically determined.

According to a sixth aspect of the present invention, in the invention according to the first aspect, the display mode is changed depending on whether or not the other data contents judged by the display mode conversion judging means include time control data. The automatic determination is made.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the display mode is changed depending on whether or not the other data contents judged by the display mode conversion judging means include mosaic graphic data. The automatic determination is made.

According to an eighth aspect of the present invention, in the first aspect of the present invention, whether the other data content determined by the display mode conversion determining means is automatic or manual, and further, a sub-screen or a telop is displayed. It is possible to automatically select the display mode by setting the additional data for setting which display mode is used and by adding 2-bit data to the teletext signal.

According to a ninth aspect of the present invention, in the eighth aspect of the present invention, a means for changing the additional data is provided so that the display mode can be easily changed by the operator's intention. .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. (Embodiment of Claim 1) FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a television receiver having a teletext reproducing apparatus of the present invention. And FIG. 2 and FIG.
[Fig. 3] is a functional block diagram of the device, showing mainly the functions of the CPU 2 in this embodiment. In FIGS. 1 to 3, the teletext data superimposed during the vertical blanking period of television broadcasting is captured by the capture control units 1 and 11. When the teletext data is captured, the capture control units 1 and 11 interrupt the CPU 2. The CPU 2 knows the reception of the teletext data by the interrupt and performs BEST (error correction processing). Then, while confirming the continuity of the teletext data, the teletext data transmission unit is reproduced and stored in the teletext reception data storage unit 7a of the memory 7. When the operator selects a program, the program data is
U2 reads from the memory 7. Here, by the process of selecting the display mode (the flowchart of FIG. 4 described later),
The child screen display and the telop display (one-line horizontal scroll display) are determined, and in the case of the child screen display, the child screen creation unit 35 creates a child screen, and the TV / text broadcast display control unit 36 uses the child screen creation unit 35. A video signal for displaying the created sub screen is created and the sub screen is displayed. In the case of the telop display, the presentation screen conversion table 7b is created and
After the creation of the page (one screen) presentation screen conversion table 7b is completed, the characters are scrolled and displayed one by one from the beginning of the table. The trick-play control unit 2a creates the presentation screen conversion table 7b, performs scroll display on the display control unit 6 based on the presentation screen conversion table, and performs automatic / manual determination of display mode determination. , For determining the display mode (child screen display / telop display).

Next, according to the present invention, the process of converting the teletext sent in the fixed screen display into the sub-screen display or the telop display will be described in more detail with reference to FIGS. 2 and 3. The video signal input to the teletext capture control unit 11 is subjected to error correction processing on the teletext data by the error correction unit 12, and then sent to the data transfer unit 13 to transmit the teletext data in program units. The memory 7 is written and read. Whether or not the received code is a character code is determined by the character code determination unit 19, and in the special reproduction mode, the character broadcast data is the gate circuit 2
Pass 0. That is, the operator specifies the special reproduction mode with the keyboard 15, or the automatic / manual discrimination unit 25
When the display mode determination unit 26 determines the telop display (special playback mode), the special playback flag 7c is set in the memory 7, and whether the special playback flag 7c is set is special playback. The determination unit 18 makes a determination, and the determination circuit drives the gate circuit 20. After that, it is processed according to the conventional method and displayed as a telop. Here, the designated character program header sentence storage unit 7d on the memory 7 is used when the display mode determination unit 26 determines whether or not there is a designated character in the header sentence. Further, in the case of the sub-screen display, when the operator specifies the sub-screen display with the keyboard 15 or the automatic / manual discrimination unit 25 discriminates the auto mode and the display mode determination unit 26 discriminates the sub-screen display, The special reproduction flag 7c on the memory 7 is not set, and thereafter,
Similar to the conventional method, the child screen display process is performed.

FIG. 4 is a flowchart of a display mode automatic determination process in the embodiment of the television receiver having the teletext reproducing device according to the present invention. This determination process is processed by the CPU 2. This process is a process in the display mode determination unit 26 of FIG. 2 described above and the display mode automatic determination of step S36 of FIG. 7 described later.
First, b7 of the display mode control (DMC) in the page data header (PACI) of the teletext program data,
The display mode is judged by the data of b6, b5, and bits (step S1). In the case of {b7b6b5 = 000}, since the whole surface is fixed display (step S2), the display mode is determined as in the processing flow of FIG. In other cases, normal processing is performed (step S3). Normal processing is {b7b6b5 = 001} for super fixed and caption display, {b7b6b5 = 010} for full vertical scroll display (raster), and {b7b6b5 = 011} for full vertical scroll display (super), {b7b6b5. = 11
1} is for horizontal scroll display of one line.

(Embodiment of claim 2) FIG.
7 is a more detailed flowchart of the determination process in step S5 of FIG. First, in step S1 in FIG. 4, a teletext program to be displayed on the entire fixed display screen is detected, and a data unit identification code (US) signal is detected from the received teletext program data (step S11). It is determined whether the value of the data unit parameter received subsequently is 02/4 (step S1).
2) If the value of the data unit parameter is not 02/4, go to the next determination according to the flowchart of FIG. 4 (step S19). On the other hand, if it is 02/4, as shown in FIG. 5, the words appearing in the header of the teletext program, which is desirable to be displayed on the child screen, are stored in the memory in advance, and the header character code of the received teletext program is coded. The column is detected, the header sentence character code is searched in advance for a word included, and if it is included, a child screen is displayed (step S18). If it is not included, it is displayed. Then, the procedure goes to the next judgment according to the flowchart of FIG. 4 (step S19).

(Embodiment of claim 3) FIG.
9 is a more detailed flowchart of the determination process in step S4 in FIG. First, in step S1 in FIG. 4, a teletext program to be displayed on the entire fixed display screen is detected, and a data unit identification code (US) signal is detected from the received teletext program data (step S21). The value of the data unit parameter received subsequently is 03/8 (1 layer photo graphic)
Alternatively, it is determined whether it is 03/9 (multilayer photo graphic) (step S22), and if the value of the data unit parameter is 03/8 or 03/9, the photo graphic figure data is included in the teletext program data. Since it is included, the child screen is displayed (step S24), and if it is any other value, the process proceeds to the next determination according to the flowchart of FIG. 4 (step S23).

(Embodiment of claim 4) Step S of FIG.
If it is determined in step 22 that photographic graphic data is included, the photographic graphic has only one line (vertical 24 dots) in one page of the teletext program.
Whether or not it is determined by the data unit data length (DL). If there is only one line, the process returns to the next determination, and if there is more than one line, a child screen is displayed.

(Embodiment of claim 5) Step S of FIG.
The content of the judgment in 22 is "data unit parameter = 02 /
8? In the case of {Data unit parameter = 02/8}, since the geometric figure is included in the teletext program data, a child screen is displayed and the data unit parameter is 02 / If the value is other than 8, the process proceeds to the next determination as in the processing flow of FIG.

(Embodiment of Claim 6) Step S of FIG.
Considering the processing flow in which the determination content in 22 is replaced with “control code = 09 / D?”, If the control code in the teletext program data is 09 / D, the time control signal is included in the teletext program data. Therefore, if the child screen is displayed and the control code does not include 09 / D, the process proceeds to the next determination as in the processing flow of FIG.

(Embodiment of claim 7) Step S of FIG.
The determination contents in 22 are "code set = 03/2 or 03/3.
or03 / 4 or 03/5? , The code set in the teletext program data is 03/2.
In the case of 03/3, 03/4, or 03/5, since a mosaic figure is included, a sub-screen is displayed, and when the code combination is other than the above, as in the processing flow of FIG. Go to judgment.

(Embodiment 8 or 9) FIG. 7 is a flowchart showing display mode determination and determination processing in a television receiver having a teletext reproducing apparatus according to the present invention. This processing is processed by the CPU 2. First, the operator sets the program number and the display mode / determination information using the keyboard 15 (step S31).
At this time, if only the program number is set, the automatic determination process is performed. Next, 2-bit information is added so as to match the set mode (step S32). The 2-bit (b1, b0) information added at this time is shown in FIG.
(However, in the case of automatic determination, {b1,
b0 = 0,0} is added). Then, based on the 2-bit additional information, it is first determined whether the display mode is determined automatically or manually (step S
33), in the case of manual determination ({b1 = 1}), step S
In step 35, in the case of automatic determination ({b1 = 0}), step S34 follows. In step S35, it is determined whether the manual display mode is the sub-screen display ({b0 = 0}) (step S35). If it is the sub-screen display, the teletext program is displayed in the sub-screen (step S40), and the telop display is performed. If ({b0 = 1}), the special reproduction flag 7c on the memory 7 of FIG. 2 is set and the teletext program is displayed as a telop (step S39). In step S34, the display mode is automatically determined as described above (step S34),
If the determination result is the sub-screen display, {b0 = 0} remains (step S37), and the teletext program is displayed on the sub-screen (step S40). If the determination result is the telop display, "1" is added to b0 ( Step S38), the aforementioned step S
As with 39, a telop is displayed (step S3).
9). Thereafter, it is determined whether or not there is a change in the display mode of the teletext displayed and the method of determining the display mode (changes at this time are made on screens other than the program number setting screen by the remote controller, etc.) (step S4).
1) If there is a change, the process returns to the step before step S32, and if there is no change, the process ends.

Here, how to change the display mode of the teletext program being displayed will be described. By pressing the "automatic", "telop", and "child screen" buttons of the remote controller of FIG. 9 described later, it is detected that there is a setting change (step S41), and in the case of setting change, 2-bit additional information Is changed (step S32), and thereafter, the process according to the flowchart of FIG. 7 is performed as described above. The additional information after this change is stored as it is. Therefore, when changing the display mode, it is not necessary to return to the teletext program setting screen, and it is possible to easily change the determination result when the display mode is automatically determined.
FIG. 8 shows additional information bits {b1, b0} of 2 bits for the display mode and the display mode determination method, and the determination symbol (A,
It is a figure showing the relationship with (S, T). However, when automatic (symbol: A) is selected as the display mode determination method,
A value of {b1, b0 = 0,0} is set, and b0 is set to "1" (telop display) or "0" (child screen display) depending on the display mode determination result.

FIG. 9 is a diagram showing an example of the remote controller transmitter according to the present invention. When the display mode setting of the teletext program being displayed is changed or on the teletext program setting screen, the display mode / determination information is displayed. Use each button of "auto", "telop", and "inset screen" when setting. When changing the display mode of the teletext program being displayed, press the respective buttons of "Auto", "Telop" and "Sub screen" while the teletext program is being displayed. The setting is changed as in the flowchart of FIG. To set the display mode and judgment information on the teletext program setting screen, press the respective buttons of “automatic”, “telop”, and “child screen” after the teletext program number, as shown in FIG. 10 described later. It is displayed (at this time, if nothing is selected, it becomes "automatic"). FIG. 10 is a display example of a screen when setting a teletext program, and “A” and “S” in the table are shown.
“T” is, as shown in FIG.
Corresponding to “A” = “automatic”, “S” = “child screen”, “T” = “telop”, and the 2-bit additional information corresponding to this setting is the display mode setting of FIG. 2 described above. / Conversion (auxiliary data addition unit) 14 is added and processed as in the flowchart of FIG. 7 described above, and the teletext program is displayed.

(Embodiment of claim 9) In the teletext setting screen of FIG. 10, in the set display mode / determination information, if the setting is changed while the teletext program is being displayed, it is changed. The 2-bit additional information of the content is compared with the previously set 2-bit additional information, and if they are different, the newer 2-bit additional information is newly added to the text broadcasting program number, and the text broadcasting program setting is made. “A”, “S”, and “T” on the screen are the changed information.

[0028]

As is apparent from the above description, the present invention has the following effects. (1) Effect on claim 1: In order to obtain information of both a television image and a teletext at the same time, the whole fixed display screen is converted into a sub-screen display or a telop display, but the step of decoding teletext program data Then, the optimum teletext display mode (sub screen display / telop display) is automatically determined for each teletext program from the content of the teletext program data such as page data header, header sentence, and data unit. Can be displayed.

(2) Effect on claim 2: When a teletext program to be displayed is displayed as a telop on the screen structure, whether the teletext program cannot correctly convey the content of the teletext program, the teletext is displayed. By judging by the data representing the title of the program in the header of the data,
It is possible to automatically determine and display the optimum display mode not only by the content of teletext data but also by the screen configuration of the teletext program.

(3) Effects on Claims 3, 4, 5, and 7: In the determination of the display mode of the teletext, as a graphic, such as a photographic figure, a geometric figure, or a mosaic figure, is included in the teletext data. By determining the display mode depending on whether there is teletext data that makes sense by displaying, the optimum display mode can be automatically determined and displayed without impairing the graphic display. If the display area of a photo graphic figure is only one line in one page of a teletext program, the telop display does not impair the meaning of the figure. In that case, the telop display can do.

(4) Effect on claim 6: By determining whether or not the time control data is included in the character broadcast data of the character broadcast program, the data is displayed during the telop display by the time control data. It prevents the display error of the teletext information that the data of the first screen starts to be displayed before the data of the first screen is replaced, and the optimum display mode for the teletext program is automatically determined and displayed. can do.

(5) Effects on Claims 8 and 9: A method of automatically determining the display mode by adding 2-bit additional information to the program number of the teletext, and a method in which the operator displays a sub-screen or a telop It can be easily compatible with the method of manually setting the display mode of display, and also the conversion of the display mode of the teletext being displayed on the TV screen {automatic (sub screen telop)} can be easily done. With these, the display mode of the teletext program can be set according to the operator's preference, the setting can be made by automatic judgment, and the result of the automatic judgment can be changed easily and easily. Saves you the trouble of resetting settings.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a television receiver having a teletext reproducing apparatus of the present invention.

FIG. 2 is a diagram showing a part of a functional block diagram of the device centering on a CPU in the embodiment shown in FIG. 1 divided into FIGS. 2 and 3;

FIG. 3 is a diagram showing another part of the functional block diagram of the device mainly showing the CPU in the embodiment shown in FIG. 1, which is divided into FIGS. 2 and 3;

FIG. 4 is a flowchart of a display mode automatic determination process in the embodiment of the television receiver including the teletext reproducing device according to the present invention.

5 shows a more detailed flowchart of the determination processing in step S5 of FIG.

6 is a more detailed flowchart of the determination process in step S4 of FIG.

FIG. 7 is a flowchart of display mode determination and determination processing in a television receiver having a teletext reproducing device according to the present invention.

FIG. 8 is a diagram for explaining a relationship between 2-bit additional information added to a teletext program number, determination information / display mode, and a symbol for display mode determination on a teletext program setting screen in the present invention. Is.

FIG. 9 is a diagram showing an external view of an example of a remote control transmitter that can be used in the television receiver according to the present invention.

FIG. 10 is a diagram showing an example of a teletext program setting screen in the television receiver according to the present invention.

FIG. 11 is a diagram showing a part of a functional block diagram centering on a CPU in a television receiver having a conventional teletext reproducing device, which is divided into FIGS. 11 and 12;

FIG. 12 is a diagram showing a part of a functional block diagram centering on a CPU in a television receiver having a conventional teletext reproducing device, which is divided between FIG. 11 and FIG.

[Explanation of symbols]

1 ... Acquisition control unit, 2 ... CPU (central processing unit), 2a ...
Special reproduction control section, 3 ... CG ROM (character Read
Only Memory), 4 ... Timer, 5 ... Signal detection unit, 6 ... Display control unit, 7 ... Memory, 7a ... Teletext reception data storage unit, 7b ... Presentation screen conversion table, 7c ... Special reproduction flag, 7d ... Designation Program header sentence storage unit, 8 ... I / F (interface), 9 ... Music synthesizer, 10 ... Television signal processing circuit, 11 ... Text broadcasting capture control unit, 12 ... Error correction unit, 13 ... Data transfer unit, 14 ... Display mode setting /
Change (auxiliary data addition part), 15 ... keyboard, 16,
Reference numeral 17 ... I / O (input / output control unit), 18 ... Special reproduction determination unit, 19 ... Character code determination unit, 20 ... Gate circuit, 21
... coordinate address conversion unit, 22 ... table creation unit, 23 ...
Page end determination unit, 24 ... Table read control unit, 25 ...
Automatic / manual determination unit, 26 ... Display mode determination unit, 27 ... Display mode control unit, 28 ... Subtitle display position control unit, 29 ... Character code / control code discrimination unit, 30 ... Control code processing unit, 31 ... CG / ROM Read control unit, 32 ... Character code / control code discrimination unit, 33 ... Normal teletext display control unit,
34 ... Special reproduction (scroll) display control unit, 35 ... Sub-screen creation unit, 36 ... Television / text broadcast display control unit, 37 ...
Display mode discrimination unit, 38 ... Subtitle position detection unit.

Claims (9)

(57) [Claims] 1. A teletext signal transmitted by superimposing data including characters and figures in a vertical blanking period of a television video signal is transmitted, and the received teletext signal is transmitted by a teletext reproducing device to text and the like. In a television receiver capable of receiving a character broadcast which is demodulated into a reproduced video signal of and is displayed together with the TV image, the character broadcast reproduction device is a display mode data for designating a whole fixed display screen during the display of the TV image. determining display mode but when receiving the added teletext signal, whether to convert the display mode by data received from the other data contents of the teletext signal to any <br/> of the child screen display or ticker Based on the conversion determination means and the determination result of the display mode conversion determination means, the data of the teletext signal is converted, and the reproduced video signal of the determined display mode is converted. Receivable television receiver of teletext characterized by the the fact to have a special playback control means for causing produced. 2. The display mode is automatically determined depending on whether or not the header sentence of the other teletext data determined by the display mode conversion determination means includes a program type designated in advance. A television receiver capable of receiving the teletext according to claim 1. 3. The display mode is automatically determined depending on whether or not the other data content determined by the display mode conversion determination means includes photographic graphic data. A television receiver capable of receiving the described teletext. 4. The telop display is selected when the photographic graphic data has a display area of only one line in one page of a teletext program. Television receiver capable of receiving teletext of. 5. The display mode is automatically determined depending on whether or not the other data content determined by the display mode conversion determination means includes data of a geometric figure. A television receiver capable of receiving the teletext described in 1. 6. The display mode is automatically determined depending on whether or not the other data content determined by the display mode conversion determination means includes time control data. A television receiver capable of receiving the described teletext. 7. The display mode is automatically determined depending on whether or not the data of the mosaic figure is included in the other data content determined by the display mode conversion determination means. A television receiver capable of receiving the described teletext. 8. The additional data for setting whether the other data content determined by the display mode conversion determining means is automatic or manual, and whether the display mode is a sub-screen or a telop. The television receiver capable of receiving teletext according to claim 1, wherein the television receiver is provided. 9. A television receiver capable of receiving teletext according to claim 8, further comprising means for changing the additional data.