JPH11168704A - Text multiplex signal receiver - Google Patents

Abstract

(57) [Summary] [Problem] When a headline or telop display is used in a character multiplexed signal receiver, information that does not conform to the headline or telop display is also displayed, and meaningless and incomplete information is presented to the viewer. There was a problem to provide. SOLUTION: Identification data for heading display and telop display is provided in an undefined area of a program presentation device of a program data header and a page presentation device of a page data header in a data structure of a teletext signal, and an inputted selected designated program is provided. Based on any of the display forms of the heading or scroll display, read only the page data of the teletext program data that matches the display form from the teletext program data,
This is a television multiplex broadcast receiving apparatus for displaying a screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for generating a text information signal which is transmitted by being superimposed on a television signal. The present invention relates to a character multiplex signal receiving apparatus for displaying.

[0002]

2. Description of the Related Art Character information superimposed on a television signal is transmitted as a digital data string on a specified horizontal line during a vertical blanking period, and a plurality of types of programs are repeatedly transmitted in the form of digital signals.

The data structure of this character multiplex signal is shown in FIG.
As shown in the figure, it is composed of seven layers of data. Tier 1
Indicates the specifications of the physical transmission path. A character signal is arranged following the horizontal synchronization pulse and the color burst signal. In this character signal, as shown in Layer 2, a data line configuration and an error correction method are defined. The data line includes a synchronization unit and a data packet. The data packet includes an error correction code. I have. Layer 3 is a data packet configuration excluding the error code of the data packet, and specifies a data block and its identification. Level 4 defines a method of forming a data group made up of a plurality of data blocks. The layer 5 defines the structure of program data formed by combining data groups and identification for program selection. Hierarchy 6 specifies the system of characters and graphics to be presented by the television receiver. The layer 7 defines a promise for operation and use of various teletext services using characters and figures.

In a television receiver for receiving and reproducing a character multiplex signal configured as described above, a character multiplex signal is extracted from a television signal, and all character multiplex signals are extracted and temporarily stored in a buffer memory. The viewer selects and selects a program desired to be viewed from a plurality of programs by using the program selection means of the television receiver, so that the specified program is read from the buffer memory and written into the presentation memory. The text program data written and stored in the presentation memory is reproduced by the presentation processing means into text, graphics and additional sound data, and the text / graphic data is reproduced and displayed on the screen display means such as a cathode ray tube via the screen display output means. The additional sound data is reproduced from sound reproducing means such as a speaker.

On the other hand, a plurality of programs are included in the teletext signal as described above, and information of a specific program is divided into a plurality of pages, and the program and the plurality of Page information is transmitted repeatedly. Generally, information of a plurality of pages of a program to be viewed is reproduced by a presentation processing unit for each page in the order in which the information is transmitted,
Although the information is reproduced and displayed on the screen display means, information that the viewer does not want to view is also transmitted, and the information that the viewer does not want to view is also reproduced and displayed.

For this reason, recently, a television receiver having a headline display function of extracting a heading part for each of a plurality of pages and reproducingly displaying the heading collectively has been developed and used. For example, when a news program in a character multiplexed signal is viewed and selected and a headline is displayed, the heading portion of the news information divided into a plurality of pages and transmitted is in the first line of each news, The information of the first line is extracted, and the character information of the first line of all the corresponding pages is collectively displayed on the screen. The viewer can know the outline of the news only by the information of the headline portion of the news reproduced and displayed by the headline display function. Playback and display detailed information of.

Further, in order to simultaneously reproduce and display video information and character information in a television signal, a telop display in which character information is horizontally scrolled line by line in a screen where a video is reproduced and displayed on the screen. .

However, the headline portion of each news does not always exist in the first line of each page of the news program, and information of one news is transmitted on a plurality of pages. May be transmitted in multiple rows and pages. For the headline display, when extracting the heading portion of each page, in order to extract and display without discriminating the information content of the heading portion, both information of the news heading portion and portions other than the heading portion are displayed. Is displayed. As a result, a headline including information of unknown meaning is obtained.

For scroll display, each page is extracted and displayed line by line. However, since the graphic information is formed of a plurality of lines, an incomplete graphic reproduction display is performed.

Therefore, in the reception and reproduction of a character multiplexed signal, the headline and telop display functions added in consideration of the convenience of the viewer cannot fully exhibit the functions. There was a problem of presenting incomplete information.

[0011]

In a conventional television receiver for receiving and reproducing a character multiplex signal, a headline display or a telop display function is used to extract and display a heading portion of each page of a character broadcast program. When displaying page information line by line, it is not possible to determine the information content of the heading part of the headline display, so that information that does not fit the heading display is reproduced and displayed. , And there is a problem of providing meaningless and incomplete information to the viewer.

According to the present invention, in a data structure of a teletext signal, data for discriminating whether heading display and telop display can be performed is provided in an unused data area, and using the heading and telop display data, It is an object of the present invention to provide a text multiplex broadcast receiving apparatus that reproduces and displays only information suitable for heading and telop display.

[0013]

A plurality of teletext program data are inserted in a predetermined horizontal scanning period in a vertical blanking period of a television signal, and whether or not heading display is appropriate in a page header portion in the teletext program data. Receiving means for receiving a text multiplex broadcast signal including identification data indicating
Data storage means for extracting and storing the teletext program data from the received teletext broadcast signal, and reading and storing selected program data from teletext program data stored in the data storage means A program presenting means for processing the selected program data and supplying the same to the display means; and controlling the respective means in combination with the data storing means and the program presenting means. A microcomputer means for judging data; and input means coupled to the microcomputer means for selecting a desired teletext program and indicating a plurality of display forms including a headline display, the input means comprising: When an instruction to display a heading is given by the microcomputer, the microcomputer means selects based on the determination result of the identification data. Of the program data is a teletext signal receiving apparatus in which only data of the header portion of the page that is suitable for header display to present on the display means.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of a circuit configuration showing an embodiment of a teletext receiver according to the present invention.

An input terminal 1 shown in FIG. 1 is supplied with a video signal received by a tuner (not shown) and subjected to video demodulation. In this video signal, data of the teletext signal of FIG. 10 is superimposed during a specific horizontal scanning period. The video signal is sliced at a predetermined slice level by the waveform shaping circuit 2 to generate a digital binary signal of teletext data. The digital binary signal generated by the waveform shaping circuit 2 is supplied to the data capturing circuit 3. The data fetch circuit 3 extracts a digital binary signal of the teletext data for each data line and supplies it to a buffer memory 4. The buffer memory 4 temporarily stores data for each data line from the data acquisition circuit 3. The microcomputer 5 controls the timing of extracting the digital binary signal for each data line in the data acquisition circuit 3 and the control of supplying and storing the data for each data line extracted in the data acquisition circuit 3 to the buffer memory 4. Is performed by the control signal. The microcomputer 5 is connected to a keyboard 6 having a numeric keypad for inputting a program number desired by the viewer. On the basis of the program number input from the keyboard 6, the microcomputer 5 operates the buffer memory 4
A control signal for searching whether the data of the corresponding program number is stored in the digital binary signal of the teletext data stored in the storage device, and when the existence of the data matching the corresponding program number is confirmed, All the program data constituting the program number is extracted and transferred to the presentation program memory 10,
Remember. The program data stored in the presentation program memory 10 is transferred to the display image memory 8 via the display control circuit 7 as data for each page unit of the program data according to a control signal from the microcomputer 5. The display control circuit 7 converts the page-based data stored in the presentation image memory 8 into the microcomputer 5.
, And outputs it to the output terminal 9. When outputting to the output terminal 9, the keyboard 6
The text broadcast data from the display image memory 8 is edited based on a control signal from the computer 5 in accordance with the display mode input from the display device, for example, a headline display, a batch display per page, or a scroll display. Output.
Display means such as a cathode ray tube (not shown) or printing means such as a printer (not shown) is connected to the output terminal 9, and reproduced or displayed or printed.

The program selection and the page recognition are performed based on the program data of the layer 5 of the data structure of the teletext broadcasting shown in FIG. FIG. 2A shows the configuration of the program data header of this layer 5, and FIG. 2B shows the configuration of the page data header. DB in the figure indicates data bytes, and numbers are assigned in the order of data transmission. Also,
"B" in the figure indicates a bit, which is given a number in the order of data transmission. That is, the data of the desired program number to be read and stored in the presentation program memory 10 by the control signal of the microcomputer 5 is determined from the data of the program data header and the page data header DB11 and DB12, and is stored in the display image memory 8. Data to be stored in page units is a program data header and a page data header DB.
Thirteen data.

In each data byte DB of the program data header and the page data header, not all the bits b have a defined item. For example, the program presentation device of the program data header DB 15 shown in FIG. 3 (FIG. 3A) and the page presentation device of the page data header DB 15 (FIG. Bit b2 and data indicating whether data should be presented to the printer of the printing means are stored in bit b2, and bits b3 to b8 are undefined in Japanese teletext signals. It has become.

Therefore, the present invention focuses on the point that an effective service can be provided to the viewer by providing a new definition in the undefined portion, and the program data header DB 15 and the page data header DB 15 A telop display rule is newly set in bit b7, and a heading display rule is newly set in each bit b8. That is, when information suitable for telop display is transmitted to bit b7, "1" is set as telop display possible, and when information not suitable for telop display is transmitted, telop display is disabled. A binary digital signal of “0” is superimposed. In the bit b8, when information suitable for heading display is transmitted, "1" is determined as having heading display, and when information not suitable for heading display is transmitted, "0" is determined as not displaying heading. Is superimposed.

On the teletext receiver side, each data byte DB of the program data header and the page data header
When the viewer designates and selects the headline display or the telop display based on the information on the telop display of the bit b7 in 15 and the heading display of the bit b8, only the information suitable for the headline display or the telop display is displayed. The microcomputer 5 makes the discrimination / recognition possible and enables reproduction and display.

The specific processing of the discrimination recognition by the microcomputer 5 will be described in detail.

First, determination of headline display for headline display will be described with reference to the flowchart shown in FIG.

When the viewer selects and inputs the program number of the desired teletext program from the keyboard 6, the control signal from the microcomputer 5 transmits the teletext information of the specified program number from the buffer memory 4. The program is read and transferred to the presentation program memory 10. The microcomputer 5 determines whether or not teletext information of the program selected and designated is stored in the presentation program memory 10 in step S1, and as a result of the determination, the presentation program memory 10 stores the information. If not, the process is terminated, and if stored, the process proceeds to step S2.
In step 2, it is determined whether or not a header display request has been input from the keyboard 6 by the viewer. If there is no header display request, the process is terminated and a normal page-based teletext playback display is performed. If there is, go to step S3. In step S3, the reception of the program data header of the selected and designated program number is confirmed. If there is no program data header, the process proceeds to step S5, and if there is a program header, the process proceeds to step S4. In step S4,
Bit b8 of data bit DB15 of the program data header
Is determined, the process proceeds to step S5 if the data is "1" with a heading display, and the process is terminated if the data is "0" without a heading display. In step S5, the reception confirmation of the page data header of the program number selected and designated is performed. If there is no page data header, the process is terminated. If there is a page header, the process proceeds to step S6. In step S6, the heading display data of bit b8 of data bit DB15 of the page data header is determined.
Then, when the data is "0" without the heading display, the process is terminated. In step S7, the program memory for presentation 1
0 is stored in the display memory 8 via the display control circuit 7 from the page data of the program stored in the page 0, and the data of the stored heading portion is stored. Is output from the output terminal 9 to display the headline, and the display means performs the headline display.

In this manner, the headline display and the headline display of the program desired by the viewer are performed. When the bit b8 in the transmitted teletext program indicates "0" indicating no headline display, the display is performed. Since nothing is displayed on the means, it may be mistaken as a failure of the television receiver. Therefore, the processing when the program without the headline display is selected and designated will be described with reference to the flowchart of FIG.
The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The difference between FIG. 5 and FIG. 4 is that step S8 is newly provided. This step S8 is the same as the program data header data bit DB15 of step S4.
Bit b8 indicates data "0" without heading display, or the page data header DB1 in step S6.
This is a step for displaying a message when the bit b8 of 5 indicates data "0" without heading display. That is, when it is confirmed in step S4 that the data of bit b8 of the data byte DB15 of the program data header is "0", or in step S6, the data of bit b8 of the data byte DB15 of the page data header is "0". When it is determined that there is a program, the process proceeds to step 8, and a message which is a program or a page inappropriate for the headline display is displayed on the display means via the display control circuit 7. In addition,
The heading display inappropriate message is stored in the microcomputer 5 in advance, or the heading inappropriate message is generated from character / graphic conversion data (not shown) based on a determination result signal of the microcomputer 5. You can also

Next, the determination of the telop display will be described with reference to FIG.
This will be described with reference to the flowchart of FIG.

When a viewer selects and inputs a program number of a desired teletext program from the keyboard 6, the control signal from the microcomputer 5 transmits teletext information of the specified program number from the buffer memory 4. The program is read and transferred to the presentation program memory 10. The microcomputer 5 determines whether or not teletext information of the program number selected and designated is stored in the presentation program memory 10 in step S11. This step S11
If the result of the determination is that the presentation program memory 10 has not been stored, the process is terminated, and if it has been stored, the process proceeds to step S12. In step 12, it is determined whether or not a viewer has input a telop display request from the keyboard 6. If there is no telop display request, the processing is terminated and a normal page-based teletext reproduction display is performed. If there is, the process proceeds to step S13. In step S13, the reception of the program data header of the selected and designated program number is confirmed. If there is no program data header, the process proceeds to step S15, and if there is a program header, the process proceeds to step S14. In step S14, the telop display data of the bit b7 of the data bit DB15 of the program data header is determined. If the data is "1" with telop display, the process proceeds to step S15. If the data is "0" without telop display, the process proceeds to step S15. Ends the processing. In step S15, the reception of the page data header of the program number selected and designated is confirmed. If there is no page data header, the process ends. If there is the page data header, the process proceeds to step S16. In step S16, the telop display data of bit b7 of the data bit DB15 of the page data header is determined. If the data is "1" with telop display, the process proceeds to step S17. If the data is "0" without telop display, the process proceeds to step S17. Ends the processing. Step S
At 17, information data of all pages of the program number corresponding to the program number from the first line of the page with the telop display is selected from the page data of the selected designated program stored in the presentation program memory 10 via the display control circuit 7. The data is stored in the display memory 8, and the stored data is output from the output terminal 9 for displaying the telop, and the telop display is sequentially performed on the display means by horizontal scrolling from the first line.

In this manner, the telop display of the program desired by the viewer is performed. When the bit b7 in the transmitted teletext program indicates "0" indicating no telop display, the display means is displayed. Since nothing is displayed on the screen, it may be mistaken as a failure of the television receiver. Therefore, the processing when the program without the telop display is selected and designated will be described with reference to the flowchart of FIG. The same parts as those in FIG. 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The difference between FIG. 7 and FIG. 6 is that step S18 is newly provided. This step S18 is
The program data header data bit D in step S14
Bit b7 of B15 is data "0" without telop display
Is displayed, or when the bit b7 of the page data header DB15 in step S16 indicates data "0" indicating no telop display, this is a step for displaying a message. That is, when it is confirmed in step S14 that the data of the bit b7 of the data byte DB15 of the program data header is "0", or in step S16
When it is confirmed that the data of the bit b7 of the data byte DB15 of the page data header is "0", the program proceeds to a step S18, where a message which is a program or a page inappropriate for the telop display is transmitted through the display control circuit 7. Display on display means. The inappropriate telop display message is stored in the microcomputer 5 in advance, or the heading display inappropriate message is generated from character / graphic conversion data (not shown) based on a determination result signal from the microcomputer 5. It can also be done.

FIG. 8 shows an example of a screen display displayed on the television receiver of the present invention.

FIG. 8A shows a reproduction screen of a normal teletext signal. If it is assumed that “news” is selected from a plurality of programs and the news program is composed of seven pages, a title indicating the news program is displayed on the first page P1 of the news program, On the second page P2, the name of the provider is the headline portion of the first news "Damage to Typhoon 9" and the details of the news, and the third page P3 continues to the news of P2 on the previous page. The details are shown on the fourth page, P4.
The fifth page, P5, contains the headline of the new news "Obon's Homecoming Rush Begins" and its details, and the sixth page, P6, shows the last news, "Nomo, this season 1
"0th win" heading and its details, and finally the seventh
Data such as the name of a news program provider is transmitted to page P7. When the data is reproduced based on this data, the display means of the television receiver displays the first page P1 to the seventh page P7.
Up to a predetermined interval for each page.

On the other hand, according to the present invention, the heading display identification signal described above is added to the data of such a news program as shown in FIG.
Superposition is performed as shown in FIG. That is, bit b of data byte DB15 of the program data header of the news program
7 is superimposed with the identification data of “1” capable of displaying a telop and the bit b8 of “1” with a heading display, and the data of “1” capable of displaying a telop of bit b7 of the data byte DB15 of the page data header is: 2nd to 6th page P
The data of "1" with the heading display of bit b8 in the second to P6 are the second page P2 and the fourth to sixth pages P4 to P4.
6 is superimposed.

When the above-described heading display is selected and designated using the teletext data on which the identification data is superimposed, as shown in FIG. 9A, the display means displays the second page P2 and the fourth page. Only the heading portions of the sixth pages P4 to P6 are displayed, and the summary contents of the news can be recognized only by the heading display. If necessary, the news headlines requiring detailed contents can be selected and designated. , The detailed contents following the heading can be displayed.

It is assumed that bit b7 of data byte DB15 of the program data header and page data header as before.
If there is no identification signal for the telop display and the heading display of the bit b8, as shown in FIG.
Half of the title of "Today's News" displayed over the lines is displayed, the sentence "On the xx region ..." on the first line of the third page P3 is displayed. As a result, half of the title of “offer” displayed over two lines is displayed, and the display becomes unnecessary or has a meaningless headline for the viewer.

Next, when the telop display is selected and specified, the telop displayable data "1" of the bit b7 of the page data header DB15 is changed from the second page to the sixth page P2 to the second page as shown in FIG. The telop non-displayable data “0” is superimposed on the first page P1 and the seventh page P7, and is superimposed on the first page P1 and the seventh page P7. The horizontal scroll display of one line is performed at a predetermined speed from the first line of the second page P2 to the last line of the sixth line. Note that FIG.
(C) shows a state in which the text on the second line of the second page P2 is displayed.

If the identification data of the telop display is not superimposed on the first page P1 to the seventh page P7, the first page
The title “Today's News” of the page P1 and the information of the seventh page P7 are displayed in half, and the display becomes meaningless.

Therefore, according to the present invention, it is possible to display only character information that can be read by the viewer in a desired display form without performing meaningless display.

In the above description, the example of the horizontal scroll is used in the telop display. However, it goes without saying that the present invention can be applied to the display of the vertical scroll.
The identification data of the heading display and the telop display are the program data header DB 15 and the page data header D.
Although provided for each bit b7 and b8 of B15, it is clear that it is provided for any of the other undefined bits b3 to b6.

As described above, according to the present invention, the identification data indicating whether a heading and a telop can be displayed is superimposed on the undefined data areas of the program data header and the page data header in the character multiplexed signal, and display processing is performed from the identification data. By providing a function to determine the pass / fail of a program in a character multiplex receiving apparatus, it is possible to reliably determine the program display mode for each page, and display processing suitable for heading display and telop display can be easily performed, and viewing and listening can be performed. Information that can be clearly interpreted and understood by the person.

[0039]

According to the present invention, it is possible to reliably determine the program display mode for each page during the reproduction and display of a teletext signal, and to easily perform display processing suitable for heading display and telop display. It is possible to provide the viewer with clear and understandable information.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a teletext receiver according to the present invention;

FIGS. 2A and 2B show the data structure of a data block of a teletext signal in Japan. FIG. 2A is a data structure diagram of a program data header, and FIG. 2B is a data structure diagram of a page data header.

3 (a) is a diagram showing a data structure of a program presentation device of a program data header, and FIG. 3 (b) is a page display device of a page data header. FIG.

FIG. 4 is a flowchart illustrating a processing procedure for displaying a heading according to the present invention.

FIG. 5 is a flowchart illustrating a processing procedure in which a heading cannot be displayed in the processing procedure of FIG. 4;

FIG. 6 is a flowchart showing a telop display processing procedure according to the present invention.

FIG. 7 is a flowchart illustrating a processing procedure in which a telop cannot be displayed in the processing procedure of FIG. 6;

FIG. 8A is a screen display diagram for explaining a reproduction screen display for each page of a text multiplex broadcast signal, and FIG. 8B is an identification for explaining a superimposed state of data for identifying a display mode for each page; Data diagram.

9A and 9B show a screen display at the time of reproducing a character multiplexed signal according to the present invention. FIG. 9A is a display diagram showing a heading display of the present invention, and FIG. 9B is a display for explaining a conventional problem. FIG. 9
(C) is a display diagram showing a telop display of the present invention.

FIG. 10 is a data configuration diagram showing a data configuration of a teletext signal in Japan.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Input terminal, 2 ... Waveform shaping circuit, 3 ... Data acquisition circuit, 4 ... Buffer memory, 5 ... Microcomputer, 6 ... Keyboard, 7 ... Display control circuit, 8 ... Display memory, 9 ... Output terminal, 10 ... Presentation program memory.

Claims (4)

[Claims] 1. Identification data indicating whether a plurality of teletext program data are inserted in a predetermined horizontal scanning period in a vertical blanking period of a television signal, and indicating whether a heading display is appropriate in a page header portion of the teletext program data. Receiving means for receiving a text multiplex broadcast signal including the following, data storage means for extracting and storing the text broadcast program data from the received text multiplex broadcast signal, and text broadcast stored in the data storage means A program presenting means including presentation storage means for reading and storing selected program data from program data, processing the selected program data and supplying the same to a display means; and the data storage means and program presenting means Microcomputer means for controlling each of these means and determining the identification data; and And input means capable of selecting a desired teletext program, and instructing a plurality of display forms including a heading display, when the input means instructs a heading display, The microcomputer means presents, to the display means, only data of a heading portion of a page suitable for heading display among the selected program data based on the determination result of the identification data. Text multiplex signal receiver. 2. A heading display instruction is given by the input means, and when the discrimination result of the identification data indicates heading display incompatibility, the microcomputer means generates message information indicating heading display incompatibility, and displays the message information. 2. The character multiplex signal receiving apparatus according to claim 1, wherein the character multiplex signal is presented to a means. 3. A plurality of teletext program data is inserted in a predetermined horizontal scanning period within a vertical blanking period of a television signal, and identification indicating whether or not telop display is appropriate in a page header portion of the teletext program data. Receiving means for receiving a text multiplex broadcast signal containing data, data storage means for extracting and storing the teletext program data from the received text multiplex broadcast signal, and text stored in the data storage means A program presenting means including presentation storage means for reading and storing selected program data from broadcast program data, processing the selected program data and supplying it to a display means; and the data storage means and program presentation Microcomputer means for controlling each of these means and discriminating the identification data; Input means capable of instructing a display form including a telop display, in addition to selecting a desired teletext program, when the telop display instruction is given by the input means, A microcomputer multiplexing means for presenting, to the display, only data of a page suitable for displaying a telop, out of the selected program data, based on the discrimination result of the identification data; Receiving machine. 4. A telop display is instructed by said input means, and when the discrimination result of said identification data indicates that the telop display is incompatible, said microcomputer means:
4. The character multiplexed signal receiving apparatus according to claim 3, wherein message information indicating telop display incompatibility is generated and presented to the display unit.