JPH01129683A - Teletext receiver - Google Patents

Abstract

PURPOSE:To print out all pages automatically by providing a program number/ page number memory, a full page print program number memory and a printed page number memory. CONSTITUTION:When a full page print key is depressed, a full page print program number memory 20 is checked and when a commanded number exists and a packet of the teletext is received, the program number and the page number are extracted and stored in a program number and page number memory 19. When the content of the memory 19 and the content of the memory 20 are coincident, a printed page number memory 21 is retrieved and when there is no coincident content, the data of the sent page is fetched in a buffer RAM 9. Then the data of the buffer RAM 9 is read and analyzed and converted into a pattern display data and written in a display memory 5, then the content of the memory 5 is read and converted into a print data and outputted to a printer 16.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a teletext receiving device, in particular, which receives a character signal superimposed within a vertical blanking period of a video signal, and receives the received LC character signal. The present invention relates to a teletext receiver equipped with a printer that outputs teletext program data obtained from a computer as display data to a display device and prints the data output to the display device as print data.

(Conventional technology and its problems) Recently, a new broadcasting service, Teletext Broadcasting (hereinafter referred to as
teletext) has been put into practical use.

Unlike regular television programs that are organized by time, teletext repeatedly transmits various information and entertainment programs consisting of text, graphics, and additional sounds, allowing viewers to access the information they want when they want it. This is a new broadcasting system that has made it possible to

The above information such as text and images is multiplexed with the television radio waves (television signal) from the broadcasting station currently being broadcast, and the receiving party must have a receiving device or adapter that can receive teletext. Once prepared, you can select and enjoy your desired teletext program from among many teletext programs.

Also, this teletext signal (text signal bucket 1-) is
It is transmitted as a digital signal using the time gap (i.e. vertical blanking period) of the current television signal, and the receiving device decodes and converts the signal and displays the image on the television screen. J: Now you can watch teletext programs by playing music or adding additional sounds such as music. Furthermore, by adding a printer to the receiving device, the contents of the teletext screen can be recorded (Print 1-).

In the teletext receiving device described above, in order to actually record the contents of the teletext screen, the viewer must press the
Copy button) to perform Print 1~, but what is printed is the page displayed on the television screen when you press the Print 1~ button (Copy button).
In order to print the Haku page, I had to display the other pages on the television screen and then press the print button (copy button) again to print.

Therefore, in order to print all the pages of one teletext program, it is necessary to display all the pages of the teletext program on the television screen, and then press the print button (copy button) for each page. The problem is that it is very time consuming.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional techniques, the present invention has an object to provide a teletext receiving apparatus that can automatically cover all pages of one teletext program.

(Means for Solving the Problems) In order to achieve the above object, the present invention receives a character signal superimposed within a vertical blanking period of a video signal, and obtains a character signal from the received character signal. Broadcast = 3 - In a teletext receiving device equipped with a printer that outputs program data as display data to a display device and also prints the data output to this display device as print data, the received teletext an all-page print instruction section for instructing printing of all pages of a program; a first memory for storing the program number and page number of a received teletext program; and a first memory for printing all pages of the received teletext program; a second memory that stores the program number of the program; and a third memory that stores the printed page number of the teletext program whose all pages are to be printed;
The teletext broadcast reception device is equipped with a printer control unit that transfers data of a teletext program whose display data is output to the display device as print data to a printer and controls printing by the printer. It provides equipment.

(Embodiment) An embodiment of the teletext receiver according to the present invention will be described below with reference to the drawings.

Figure 2 shows an example of the teletext receiving device according to the present invention.
− It is a block system diagram showing the configuration of the previous example.

In the figure, a video signal obtained by selecting and demodulating a television signal received by an antenna (not shown) is input from an input terminal 1, and is further input to a synchronization separation circuit 2 and a waveform equalization two-character signal separation circuit 3, respectively. Supplied.

The synchronization separation circuit 2 separates vertical and horizontal synchronization signals and generates gate pulses for extracting character signals, supplies this to the waveform equalization 2 character signal separation circuit 3, and also reproduces the clock signal. , and supplies this to the display clock generation circuit 4.

The clock signal can be used for code identification of separated character signals and for pin 1.
- Used as a reference pulse for decoding processing in units.

Note that the display clock generation circuit 4 generates a display clock signal necessary for reading data from the display memory 5 based on the reproduced clock signal.

The display memory 5 includes a function memory 5a and a pattern memory 5b.
Then, the read data is D/A converted and converted into an analog RG.
It is composed of a color matrix 5C that converts into a B signal, and stores dot pattern data from the character generator 6, RAM, etc. This dot pattern data is
The address data from the display control circuit 7 is read out at the raster scanning period.

Note that the functional memory 5a is a memory that stores the foreground color, background color, brushing, and concealing states. Also,
The pattern memory 5b is a memory that stores the shape of a pattern.

A character generator 6 decodes information such as characters and graphics, and generates dot pattern data such as characters and graphics to be displayed on both sides.

Further, the waveform equalization circuit of the waveform equalization two character signal separation circuit 3 shapes the waveform of the character signal in order to minimize code identification errors due to waveform distortion during transmission. In addition, in the character signal separation circuit, after separating the character signal whose waveform has been equalized by the gate pulse generated in the synchronization separation circuit 2, code identification is performed at the timing of the clock signal, and data packets are generated in the form of digital signals of Ml and rOJ. is extracted.

The extracted data packet is error corrected by the error correction circuit 8.

The program data corrected by the error correction circuit 8 is
ARAM (Random Access Memory
y) The CPU (Central Processing
decoding processing is performed in a Unit ) 11.

Work RAM 12. Remote control interface 13 and remote control transmitter 14. There is a printer interface 15 and a printer 16.

Next, the configuration of the main parts of an embodiment of the device of the present invention will be explained. FIG. 1 is a block system diagram showing the configuration of essential parts of an embodiment of a teletext receiver according to the present invention. In FIG. 1, the same components in FIG. 2 mentioned above are given the same numbers. Further, FIGS. 3 and 4 are flowcharts showing the operation of FIG. 1.

In FIG. 1, the data acquisition section 17 includes the synchronization separation circuit 2
．． It consists of a waveform equalization two-character signal separation circuit 3 and an error correction circuit 8, which separates the character signal from the received television signal as described above, performs code identification, and converts it into Ml, Ml,
A data packet (telecasting data) is extracted in the form of rOJ, and further, the error is corrected and stored in the buffer RAM 9.

Further, the program all page print instruction section 2 program selection section 18 is connected to the remote control interface 13 and the remote control transmitter 14.
It checks whether the viewer has instructed to print all pages of the teletext program or which program has been selected, and sends the instruction to the CPU 11. For example, after selecting a program number using the ``program number key'' of the remote control transmitter 14, pressing the ``all page print key'' instructs to print all pages of the program of the selected program number.

The program number designated here is taken into the CPU 11 via the remote control interface 13 and stored in the all-page print program number memory 20.

CPU 1i stores program data in buffer RAM 9.
After taking it out and analyzing it, the display data is written into the display memory 5. Furthermore, if it is necessary to print that screen, the data is read from the pattern memory 5b, converted to print data for the printer, and then transferred to the printer 16 via the printer interface 15. control printing.

The program number and page number memory 19 of the received program uses a page data header (PACi) to identify which page of which program the currently received data belongs to.
This is a memory that checks the program number and page number in the page data header when it is received, and stores them.

The all-page print program number memory 20 is a memory that stores the program number of the teletext program to be printed to the all-page print 1 among the received teletext programs.

The printed page number memory 21 is a memory for storing page numbers of pages that have been printed out of all the pages of the teletext program that should be printed, and constitutes a table of printed pages. For example, if pages 1 to 3 have been printed, the configuration will be as shown in FIG.

In the above configuration, first, the process in the program selection unit 18 of the instruction unit 9 for program all page print 1 is as shown in the flowchart of FIG. Since the program number of the program to be printed is inputted one digit at a time, it is stored in the program number buffer in sequence.Then, when the "all page print key" is pressed, the all page print program number memory 20 is checked and all pages have already been entered. If the print program number is stored, the instruction is ignored; if not, the program number in the program number buffer 1 is stored in the all-page print program number memory 20.

Next, the operations of data reception and all-page printing will be explained with reference to flowchart 1- in FIG. 4.

The all-page print program number memory 20 is checked, and if there is no program for which all-page printing is instructed, nothing is done.

If there is a program for which all pages are instructed to be printed, when the superimposed teletext bucket 1~ is received within the vertical blanking period of the video signal, the packet contains the program number and page number information, and each page is printed. Check whether it is a page data header (hereinafter abbreviated as PACi) sent at the beginning of
If it is not PACi, wait until PACi arrives. If it is PACl, its program number and page number are extracted and stored in the program number and page number memory 19 of the received program.

In order to check whether the received program is a program for which all-page printing has been instructed, the contents of the program number and page number memory 19 of the received program are compared with the contents of the all-page print program number memory 20, and if they do not match, the contents of the all-page print program number memory 20 are compared. , the following PACi
wait.

Also, if the contents of the memory 19 and the contents of the memory 20 match, this program is a program that requires all pages printed 1~, so the page number of the received program is used in the printed page number memory (table) 21. If there is a match, all pages of the corresponding program have been printed, so clear the all page print program number memory 20,
Assume that there is no program that specifies all-page printing.

Also, if the printed page number memory (table) 21 is searched and a match is found, it is necessary to print this page, so the data of the corresponding page sent to PACi and later is imported into the buffer RAM. . Thereafter, the data in the buffer RAM is read out, analyzed, and then converted into screen display data and written into the display memory 5. This results in
The corresponding page will be displayed on the screen. Furthermore, the contents of the pattern memory 5b of the display memory 5 are read out, converted into print data, and outputted to the printer 16. When printing is completed, the page number for which printing has been completed is additionally registered in the printed page number memory (table) 21.

As described above, the apparatus of the present invention stores the program number and page number memory 19 of the received teletext program. All page print program number memory 20 and printed page number memory 21
First, the page of the received program is displayed on the screen, and then the contents (data) of that screen are automatically printed, the subsequent pages are automatically printed in the same way, and the last page of the program is displayed. All pages of the program should be printed one by one until the next page is printed.

(Effects of the Invention) As described above, according to the teletext receiving device of the present invention,
It has the feature that all pages of one teletext program can be automatically printed.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram showing the configuration of essential parts of an embodiment of the teletext receiver according to the present invention, and FIG. 2 is a block diagram showing the structure of an embodiment of the teletext receiver according to the present invention. The system diagram, FIGS. 3 and 4, is a flowchart 1-1 showing the operation of the apparatus of the present invention. FIG. 5 is an explanatory diagram of the printed page number memory. DESCRIPTION OF SYMBOLS 1...Input terminal, 2...Synchronization separation circuit, 3...Waveform equalization single character signal separation circuit, 4...Display clock generation circuit, 5...Display memory, 5a...Function memory , 5
b... Pattern memory, 7... Display control circuit, 10
...Program RAM. 11...CPU, 12...Work RAM, 13...
・Remote control interface, 14...Remote control transmitter, 15...Printer interface, 16...Printer, 17...Data import section, 18...Program all page print instruction section 9. Program selection section,
19...Program number of received program, page number memory, 20...All page print program number memory, 21.
・Printed page number memory.

Claims (1)

[Claims] Receiving a character signal superimposed within a vertical blanking period of a video signal, outputting teletext program data obtained from the received character signal to a display device as display data, and displaying the same. A teletext receiving device equipped with a printer that prints data output to the device as print data includes: an all-page print instruction section that instructs printing of all pages of a received teletext program by a predetermined operation; a first memory that stores program numbers and page numbers of broadcast programs; a second memory that stores program numbers of teletext programs that are to be printed on all pages among the received teletext programs; a third memory that stores printed page numbers of teletext programs; and a printer that transfers the data of the teletext programs whose display data is output to the display device as print data to a printer and controls the printing of this printer. What is claimed is: 1. A teletext receiving device, comprising: a control section.