JPH09219842A - Character broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a receiver which is convenient to use and capable of obtaining the record of a content program list-inserting character broadcast programs. SOLUTION: When a content program output processing is started by the operation of a content key (not shown in Figure), character data is analyze/ extract-processed by a data analyzing and extracting part 330. In the analyzing and extraction processing, program managing data is monitored, all the pieces of information included in it are read and all the data of a program '000' is stored to store data on the character broadcast program and the title of the channel in a program number and title storing part 350. Data stored in the program number and title storing part 350, namely the program numbers and titles is edited in a format housing it within a range a user can glance at and the content program consisting of the processed program name and title is outputted to a printer 370. A recording paper recording the list of the content program is outputted from the printer 370.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extracting means for extracting teletext data superimposed on a vertical blanking period of a television broadcast of a selected channel, and a teletext program contained in the extracted teletext data. The present invention relates to a teletext receiving apparatus including: an output unit that outputs the text to a display device; and a connecting unit that connects to a printing apparatus that prints a table of contents of teletext programs included in the extracted teletext data.

[0002]

2. Description of the Related Art Text broadcasting is a broadcasting in which a redundant image of television broadcasting is used to provide a still image such as characters and figures, and a text signal is sent out using eight scanning lines in a vertical blanking period. This teletext can be displayed on a display via a text signal decoder or can be viewed on a television receiver with a built-in text signal decoder.

Teletext is available free of charge, and many text methods contain new and useful information in everyday life.

However, the utilization rate of this teletext is lower than that of ordinary television broadcasting (video program). One of the reasons is that the teletext program section is not published in newspapers, magazines and the like. It can also be said that teletext programs are not published in newspapers, magazines, etc. due to its low usage rate.

Currently, there are two methods for finding a desired program from programs provided by the teletext. One of them is a method of using a program list that is regularly distributed by teletext providers. The program list (1
(As of 995), programs for three months are posted, but since the contents are updated once every three months, it is necessary to obtain a program list each time the update is made.

On the other hand, as another method, there is a method of operating the teletext receiver to display a teletext program corresponding to the selected channel on the screen and watch it. Specifically, first, a channel is selected, a teletext screen is displayed, and then an index list of teletext programs corresponding to that channel is displayed as an index program by operating the index button. If a dedicated printer or a video printer that prints this teletext screen is used, the table of contents program can be printed.

However, there are more than 100 channels of teletext programs, and in this case, the table of contents program reaches the number of screens of 10 pages or more on the display screen, and one teletext program included in the table of contents program is displayed. It is not possible to display a list on the screen, and the display screen needs to be moved. That is, in order to print all the programs on the channel, it is necessary to display the screen and press the print button ten times or more.

Further, in the case of a video printer, since one screen is usually printed on another sheet, it is not suitable for this purpose. On the other hand, when the teletext printer is used, the table of contents information can be printed out in a state where all the pages are connected because the printer is printed on the roll paper.

[0009]

However, in the above-mentioned dedicated printer, the format is set so that the characters are printed based on the character layout displayed on the screen. When the number of pages of the table of contents program corresponds to the number of screens of 10 pages, the total length of the recording paper to be output becomes about 1 m.
Therefore, it is difficult to look at the teletext program recorded on the output recording paper at a glance, and the usability of the table-of-contents program output by this dedicated printer cannot be said to be excellent.

An object of the present invention is to provide a teletext receiving apparatus which is excellent in usability and which can obtain a record of a table of contents program listing a teletext program.

[0011]

According to the first aspect of the present invention,
Extracting means for extracting teletext data superimposed in the vertical blanking period of the television broadcast of the selected channel; output means for outputting a teletext program included in the extracted teletext data to a display device; In a teletext receiving device, which comprises a connecting means for connecting to a printing device that prints a table of contents list of the teletext program included in the extracted teletext data, operation means for issuing an output instruction of the table of contents, and the operation Editing means for extracting the table-of-contents program data from the extracted teletext data, and editing the table-of-contents list from the table-of-contents program data based on an editing format in which the user can glance at the table of contents. And outputting the edited list of contents to the printing apparatus via the connecting means so that the printing apparatus prints. Wherein the print control means for are provided.

According to a second aspect of the present invention, in the teletext receiving device according to the first aspect, the editing format is a print format for storing the teletext programs listed in the table of contents in a range in which the user can glance. It is characterized by consisting of.

According to a third aspect of the present invention, in the teletext receiving apparatus according to the second aspect, the print format includes the teletext programs listed in the table of contents within a range in which the user can glance. It is characterized in that the font size set in is included.

According to a fourth aspect of the present invention, in the teletext receiving apparatus according to the second aspect, the text format programs listed in the table of contents are included in the print format within a range in which the user can glance. The character size, the number of characters per line, and the number of lines per page are set.

[0015] The invention according to claim 5 is the invention according to claims 1 to 4.
In the teletext receiver according to any one of items 1 to 5, the operation means has a table of contents key for issuing an output instruction of the table of contents list.

According to a sixth aspect of the present invention, in the teletext receiving device according to the fifth aspect, the operating means is provided in the main body of the device.

According to a seventh aspect of the present invention, in the teletext receiving apparatus according to the fifth aspect, the operating means is a remote device.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of a teletext receiving device of the present invention, FIG. 2 is a diagram showing a signal waveform of a teletext, and FIG. 3 is a diagram showing a configuration of program data of the teletext. FIG. 4 is a diagram showing the structure of teletext program management data.

First, a specific example of a teletext to which the teletext receiving apparatus of the present embodiment is applied will be described with reference to FIG. The teletext described here is compatible with teletext systems in Japan.

[0021] The television system in Japan is the NTSC system.
It is composed of 25 horizontal scanning lines (hereinafter, one unit is represented by H). Of the scanning lines in the blanking period which do not appear on this display screen, the 14th and 15th fields of the 1st field
H, 16H, 21H, and 277 in the second field
The character signal is superimposed in the scanning period of H, 278H, 279H, and 284H.

Specifically, as shown in FIG. 2, the character signal is transmitted as a data packet in units of one scanning line, and has a level of 70% of the standard amplitude (0.714V) of the video signal voltage indicating the white level. NRZ format binary data in which "1" corresponds to a blanking level of "0".
The interval of each character data is set to 0.1746 μs and 1
296-bit data is transmitted during the horizontal scanning period.

The 296-bit data in this one horizontal scanning period includes 24 bits of a synchronizing portion for synchronizing with the data and 82 bits of a code for checking an error in the data, and an actually valid character. The data is 190 bits excluding 24 bits of these synchronizing parts and 82 bits of code. The first 14 bits of this 190-bit character data are used as a prefix.
6 bits (22 bytes) form a data block.

As shown in FIG. 3, the program data composed of this data packet is composed of first program management data and subsequent page data. The number of pages and data length of the program are included in the program management data. ing.

As shown in FIG. 4, the program management data includes a prefix, a header start number, a data group identification code, a data group serial number, a data group size,
It is composed of a program number, total number of pages, program data length, end code and the like.

The data group identification code is set to "0" by reference when indicating the management program data header or the page data header.

The subsequent data group serial number in the third byte represents the order of the data groups to be connected, and is the fourth and fifth data groups.
The data group size located in bytes indicates the number of blocks in the data group.

The program number is located at the 11th and 12th bytes counting from the position of the header start code, and the program number in the program table of contents is set to "000" by reference in all channels.

There is page total information in the following 13th byte, and in the 18th and 19th bytes, there is data indicating the data length of the program, that is, the number of all the data blocks constituting the program.

Therefore, by monitoring the program management data, reading the information contained therein, and accumulating all the data of the program "000", the data of the teletext program number and title of the channel is collected. can do.

Next, the configuration of the teletext receiving apparatus applied to the above teletext will be described with reference to FIG.

As shown in FIG. 1, the teletext receiving apparatus is
The tuner 250 is provided for selecting a desired channel from the broadcast wave signal received by the antenna 240. Although the antenna 240 and the tuner 250 are provided on the television receiver side, they may be provided on the teletext receiver main body instead.

The character data of the character broadcast of the channel selected by the tuner 250 is extracted by the character data extraction unit 300. Character data extraction unit 300 is 5.72 MHz
Pulse, the peak value of the transmission waveform at the position where the eye pattern is most opened is sampled, and it is determined whether the sampled value is “1” or “0” by comparing with the threshold value. The character data extracted by the character data extraction unit 300 is temporarily stored in the buffer memory 320, and the character data stored in the buffer memory 320 is given to the data analysis extraction control unit 330.

The data analysis / extraction control section 330 analyzes the character data given from the buffer memory 320, and stores necessary data in the program / title storage section 350 according to the analysis result. This data is the program number and its title. The analysis and determination processing of the data analysis / extraction unit 330 is performed based on the processing program stored in the ROM 340.

The program number and title once stored in the program number / title storage section 350 are edited in a format that allows the user to glance at the program number and title, and are given to the printer control section 360. For example,
Assuming that the number of teletext programs on the selected channel is about 100, if the text size is set to about 9 points, the program number and title indicating the teletext program will be stored on one A4 size recording sheet. You can

The printer 370 is connected to the printer control section 360 via a connection terminal (not shown) and is controlled by the printer control section 360.

The character extraction unit 300, the data analysis extraction control unit 330, the ROM 340, the program number / title storage unit 350, the printer control unit 360, and the command identification unit 230 are connected to the CPU 400, and the CPU 400 controls each block.

The command identifying section 230 takes in a command corresponding to a key operation of an operation section (not shown) via the main body interface 200, or a command corresponding to a key operation of a remote controller (not shown) by a remote controller interface. Capture via 210 and identify the command. The identified command is given to the CPU 400, and the CPU 400 controls to execute the process corresponding to the command. The main body operation unit and the remote controller include a channel selection key and a table of contents key.

In the present embodiment, the character extraction unit 30
0, data analysis extraction control unit 330, printer control unit 36
0, the command identification unit 230, and the CPU 400 are separated from each other, but these functions can also be executed in the CPU 400.

Next, the operation of outputting the table-of-contents program by the printer 370 in the teletext receiving apparatus of the present embodiment will be described.

First, a desired channel is selected by a key operation on the main body operation section or a key operation on the remote controller.
If the channel is not selected, the previously selected channel is automatically set.

Next, the table of contents key of the operation unit or the table of contents key of the remote controller is operated, and by operating the table of contents key,
The output process of the table of contents program is automatically started.

When this table-of-contents program output processing is started, first, the character data superimposed in the vertical blanking period of the channel selected by the character extraction unit 300 is extracted, and the character data is temporarily stored in the buffer memory 320. Accumulated.

The character data stored in the buffer memory 320 is analyzed and extracted by the data analysis / extraction section 330. The analysis / extraction process is performed according to the following procedure.

First, it is determined whether the start code following the prefix is the header start code (SOH), whether the data identification code next to the header start code is "0", and the header start code. It is sequentially determined whether the program number data in the 11th and 12th bytes counted from "000" is "000".

The start code following the prefix is a header start code (SOH), the data identification code next to the header start code is "0", and the program is at the 11th and 12th bytes counted from the header start code. Number data is "00"
If it is "0", it is determined to be the program management data of the program table of contents, the page number of the 13th byte is set in the counter, and the program data lengths at the 18th and 19th bytes are held. .

Next, the serial number of the data group is read, and the page data is stored in the program number / title storage unit 350 according to the serial number of the data group until the serial number matches the total number of pages and the data length.

The data stored in the program number / title storage section 350, that is, the program number and the title, are edited in a format that allows the user to have a glance. In addition,
The ROM 340 is used to convert data to characters and figures.
The conversion table stored in is used.

Next, the index program consisting of the processed program and title is output to the printer 370, and the recording paper on which the list of index programs is recorded is output.

As described above, since the program number and title are edited in a format that allows the user to see at a glance and the table of contents program including the processed program and title is controlled to be printed by the printer 370, It is possible to easily obtain one sheet of recording paper on which a list of table-of-contents programs is recorded, that is, it is possible to obtain a record of a table-of-contents program listing a teletext program with excellent usability.

[0051]

As described above, according to the teletext receiving apparatus of the first aspect, the operating means for issuing the instruction to output the list of contents is provided, and the instruction to output the list of contents is given by the operating means. , Extract the table-of-contents program data from the extracted teletext data, edit the table-of-contents list from the table-of-contents program data based on an edit format in which the user can glance, and connect the edited table-of-contents list to the printer by the print control means. Output through the means, and control the printing device to print,
It is possible to obtain a record of a table-of-contents program that lists teletext programs with excellent usability.

According to the teletext receiver of the second aspect, since the editing format is a print format that allows the teletext programs listed in the table of contents to be included in a range that can be glanced by the user, from the table of contents program data. The process of editing the table of contents list can be easily performed.

According to the teletext receiving device of the third aspect, the print format includes the text size set so that the teletext programs listed in the table of contents are included in a range that the user can glance at. Therefore, by setting this character size, it is possible to easily create a list of contents that the user can glance at.

According to the teletext receiving device of the fourth aspect, the print format has a character size and a line set so that the teletext programs listed in the table of contents are set within a range in which the user can glance. Since the number of characters and the number of lines per page are included, it is possible to more easily create a table of contents that the user can glance at.

According to the teletext receiving device of the fifth aspect, the operating means has the index key for issuing the output instruction of the index list, so that the output instruction of the index list can be easily issued.

According to the teletext receiver of the sixth aspect, the operating means can be provided in the main body of the apparatus.

According to the teletext receiver of the seventh aspect, the operating means can be constituted by a remote device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a teletext receiving device of the present invention.

FIG. 2 is a diagram showing a signal waveform of teletext.

FIG. 3 is a diagram showing a structure of teletext program data.

FIG. 4 is a diagram showing a structure of program management data for teletext.

[Explanation of symbols]

 200 Main body interface 210 Remote control interface 230 Command identification section 250 Tuner 300 Character extraction section 320 Buffer memory 330 Data analysis extraction control section 340 ROM 350 Program number / title storage section 360 Printer control section 400 CPU

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G09G 5/00 530

Claims (7)

[Claims] 1. Extracting means for extracting teletext data superimposed on a vertical blanking period of a television broadcast of a selected channel, and a teletext program included in the extracted teletext data is output to a display device. An operation for issuing an output instruction of the table of contents list in a teletext receiving device including output means and connection means for connecting to a printing device that prints a table of contents list of the teletext program included in the extracted teletext data. Means and the operation means to output the table of contents list, the table of contents program data is extracted from the extracted teletext data, and the table of contents list is converted from the table of contents program data into an edit format that allows the user to glance at it. Editing means for editing based on the above, and the edited table of contents are output to the printing device via the connecting means and printed on the printing device. A teletext receiving device, comprising: a print control unit for controlling so that the remote control is provided. 2. The teletext receiving apparatus according to claim 1, wherein the editing format is a print format that allows teletext programs listed in the table of contents to be included in a range that a user can glance at. 3. The print format includes a character size that is set so that the teletext programs listed in the table of contents can be viewed by a user. The teletext receiving device according to claim 2. 4. The print format includes a character size, a number of characters per line, and a number of lines per page, which are set so that the teletext programs listed in the table of contents can be viewed by a user. The teletext receiving device according to claim 2, wherein the teletext receiving device is provided. 5. The teletext receiving device according to claim 1, wherein the operation means has a table of contents key for issuing an output instruction of the table of contents list. 6. The teletext receiving device according to claim 5, wherein the operating means is provided in the main body of the device. 7. The teletext receiving device according to claim 5, wherein the operating means is a remote device.