JPH03834B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called teletext receiver that receives teletext in which a digital signal is superimposed during the vertical blanking period of a television signal and displays text information on the screen. be.

In recent years, there has been a gradual increase in the movement toward the practical use of so-called text multiplex broadcasting, in which text information converted into a digital signal is superimposed and transmitted during the vertical retrace period of a television signal.

Figure 1 shows how to receive such a teletext broadcast,
1 is a block diagram showing a conventional example of a teletext broadcasting receiver capable of displaying text information multiplexed with television broadcasting on a television screen; FIG. In FIG. 1, 1 is a tuner for receiving television signals, 2 is an IF circuit, 3 is a video signal detection circuit, 4 is a video amplification and color reproduction circuit, and 5 is a cathode ray tube.
The above is the same as that used in ordinary television receivers. 10 is a character signal extraction circuit for extracting a character signal multiplexed on a television signal; 11 is a program code discrimination circuit for determining whether the program code added to the character signal matches the selected program code input from the keyboard 12; If there is a match, the character signal pattern data is stored in the display memory 13.
will be written to. 14 is a synchronous separation circuit;
5 is an address counter circuit for reading out the contents of the display memory in synchronization with the beam scanning of the cathode ray tube 5; 16 is for performing parallel-to-serial conversion and color synthesis of the data in the display memory 13 to synthesize a character video signal. a signal synthesis circuit; 17 a display mode discrimination circuit for discriminating a display mode code added to a character signal; 18 a display gate setting circuit for setting a display gate signal according to the display mode; 19 a display gate setting circuit for setting a display gate signal according to the display mode; This is a signal switching circuit that switches between video and teletext screens. The display mode determination circuit No. 17 discriminates these display mode codes added to the character signal and determines whether it is for TV screen display, full fixed display of teletext, or super display where TV screen and teletext screen are mixed. to decide. The display gate setting circuit 18 controls the gate range in which the signal of the signal switching circuit 19 is switched according to the display mode determined by the display mode determining circuit 17. The signal switching circuit 19 receives the television video signal from the television video amplification circuit 4 and the character information written in the display memory 13 by the address counter circuit 15, and then reads out the television video signal from the television video amplification circuit 4 and the character information written in the display memory 13.
The character signal synthesized by step 6 and the signal that has become It is possible. Further, 20 is a print control circuit, and 21 is a printer. By operating a print key on the keyboard 12, a print signal is supplied to the print control circuit 20, and the character information stored in the display memory is printed.

However, in such conventional teletext receivers, when printing text information stored in the display memory, only one screen can be printed with one operation of the print key, and one program can be printed from multiple pages. If you want to print the entire program, you must operate the print key for the number of pages. Furthermore, when the programs are not sent sequentially starting from the first page, it is difficult to print them sequentially starting from the first page. Therefore, the demands of users who wish to print and save teletext programs have not been fully satisfied.

An object of the present invention is to eliminate the drawbacks of the conventional teletext receiver described above, and to not only enable efficient viewing of the main broadcasts of teletext and teletext;
To provide a teletext receiver capable of using teletext more efficiently and expanding the range of use of the teletext by simultaneously improving a print function for storing teletext information.

In order to achieve the above object, the present invention adds a program page code determination circuit when attempting to print a teletext program consisting of multiple pages, so that it can be printed with a single print key operation. It is now possible to print sequentially from the first page of a program. Another invention is to provide a program number memory in addition to the discrimination circuit so that a plurality of programs can be printed with a single print key operation, and the programs are divided into program units and printed in sequence. .

EMBODIMENT OF THE INVENTION The teletext receiver of the present invention will be described in detail below with reference to embodiments. FIG. 2 is a block diagram showing an embodiment of a teletext receiver according to the present invention. In FIG. 2, 22 is a print control circuit that determines the program page code added to the character signal only when the print key is selected on the keyboard 12, and sends a print permission signal so that the program is printed sequentially from the first page at the beginning of the program. This is a program page code discrimination circuit that outputs to 20. Other symbols are the same as those in the block diagram of FIG.

Although the transmission order of teletext programs is determined by the broadcasting station, the program contents are not necessarily transmitted from the first page at the time the print key is pressed.
Currently, the first teletext program consists of 1 page, the second program 3 pages, and the 3rd program 2 pages, and the teletext program is printed in the order shown in Figure 3 at the time you want to print the program. Suppose that is sent. When trying to print the second program, conventionally, the user waits for the first page of the second program to be sent, presses the print key, and then presses the print key again when the next second page is sent. I had to operate it. However, by providing the program page code discrimination circuit 22 having the function shown in FIG.
With one print key operation, a print signal from the keyboard 12 enters the program page code discrimination circuit 22, and when the first page of the second program is sent, the program page code discrimination circuit 22 outputs a print permission signal and the second program page code discrimination circuit 22 outputs a print permission signal. One page of the program will be printed. Thereafter, print permission signals can be output in order of the pages of the second program, and printing can be performed sequentially from page 1 of the second program.

FIG. 5 is a block diagram showing another embodiment of the teletext receiver according to the present invention. In FIG. 5, 23 is a program number memory, and the other symbols are the same as in the block of FIG. This block diagram shows an example of a teletext receiver capable of printing a plurality of programs with a single print key operation. When a plurality of program print commands are input from the keyboard 12, they are stored in the program number memo of the program number 23, and the first selected program number is entered into the program code determination circuit 11. Then, one program is printed by performing the same operation as shown in the block diagram of FIG. If the setting is made so that when printing of one program is finished, a termination signal is output from the program page code determination circuit 22, the termination signal is input to the program number memory 23, and the counter of the stored program number is output. is counted by one and the next program number is input to the program code determination circuit 11. Thereafter, a plurality of programs can be printed in the same manner.

As described above, the teletext receiver according to the present invention can be used to print and save frequently used information on teletext programs and for purposes such as comparing that information with future information. For users, if the information spans multiple pages, the user's print key operations to print sequentially from the first page of the program would be complicated on a conventional teletext receiver; The present invention can eliminate this complexity.

Also, you can watch not only one program but also multiple programs at once.
Since each program can be divided and printed sequentially in one print operation, the complexity of the print key operations conventionally required is further reduced.

Note that the purpose of the present invention is to print a program consisting of multiple pages consecutively, and therefore, even when printing from the end of a sentence in reverse, it is also possible to print from the "beginning" of the program. It can be executed as follows.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional teletext receiver, FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is an explanatory diagram showing an example of the transmission order of teletext programs, and FIG. FIG. 4 is a flowchart for explaining the functions of the program page code discrimination circuit provided in accordance with the present invention, and FIG. 5 is a block diagram showing another embodiment of the present invention. Code explanation, 22...Program page code determination circuit, 23...Program number memory.

Claims (1)

[Claims] 1. Signal reproducing means for receiving a television signal and reproducing a television video signal, and character signal extraction for extracting a character signal multiplexed during the vertical retrace period of the television signal and storing it in a display memory. means, a character signal reproducing means for reading the character information stored in the display memory and reproducing it as a character video signal, a signal switching means for switching and displaying the television video signal and the character video signal, and a character signal added to the character signal. a printer; and a print control means that reads character information stored in the display memory and causes the printer to print it when a print permission signal is input. In a teletext broadcasting receiver comprising: when a print command from the print command generating means is input together with a code of a program to be printed, a page code of the program added to the character signal is determined; a program page code determination circuit 22 that sends print permission signals to the print control means in a predetermined order for a plurality of pages belonging to the program;
The teletext broadcasting is characterized in that when a single print command is issued by the print command generating means together with a code specification of a program to be printed, all pages of the specified program can be automatically printed in a predetermined order. Receiving machine. 2. A signal reproducing means for receiving a television signal and reproducing a television video signal, a character signal extraction means for extracting a character signal multiplexed during the vertical blanking period of the television signal and storing it in a display memory, and the display memory. a character signal reproducing means for reading out character information stored in the computer and reproducing it as a character video signal; a signal switching means for switching and displaying the television video signal and the character video signal; and specifying a program code added to the character signal. a printer; a print control means for reading character information stored in the display memory and causing the printer to print the character information when a print permission signal is input; and the print command generation means. When a print command is input together with the code of the program to be printed, the page code of the program added to the character signal is determined, and the print permission signal is sent to the printer in a predetermined order for multiple pages belonging to the program. A teletext receiver comprising a program page code discriminating circuit 22 for sending out to a control means, the program number memory 23 receiving and storing each code of a plurality of programs to be printed from the print command generating means. For the first program code read from the program number memory 23, the program page code discrimination circuit 22 discriminates the page code of the program with the code added to the character signal, etc. When a print permission signal is sent to the print control means for the pages in a predetermined order and printing is completed, the program page code determination circuit 22 sends a command to the program number memory 23 to read out the next program code and perform the same process. 2. A teletext broadcasting receiver characterized in that all pages belonging to all programs stored in the program number memory 23 can be automatically printed in a predetermined order by printing the program number memory 23.