JPH04248783A - Teletext receiver - Google Patents

Abstract

PURPOSE:To offer the teletext receiver able to output a program stored in a memory to an external storage device such as a VTR with a simple operation. CONSTITUTION:The receiver is provided with a memory storing the data of a teletext program, a registration means designating a program number, a decoding means converting the data into a video signal and outputting the signal, a data selection means, and an instruction means instructing the operation of the selection means and when the instruction means is operated, all program data stored in the memory are converted into video signals and they are outputted.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention receives and decodes character and graphic information multiplexed and transmitted on television broadcasting, and
A teletext receiving device that displays on a display unit such as a teletext receiver, and a VT
The present invention relates to a method for automatically sequentially recording data in R.

0002

[Prior Art] In recent years, various types of television multiplex broadcasting have been considered in order to make effective use of broadcast radio waves. Teletext broadcasting, which can display information consisting of 200 characters on the screen of a television receiver, has already been put into practical use. In order to eliminate the waiting time from selecting a program to receiving the selected program and displaying it on the screen, the teletext receiving device that receives the teletext program stores the program specified in advance in the memory. It is common practice to leave

An example of the above-mentioned conventional teletext receiving apparatus will be described below with reference to the drawings.

FIG. 4 is a diagram showing functional blocks of the conventional teletext receiving apparatus described above. In FIG. 4, reference numeral 1 denotes a character signal extraction section that extracts character signals multiplexed during the vertical blanking period from the television video signal. A key input processing section 2 performs input processing such as a request for selecting a program to be displayed, a request for registering a program to be stored, and a request for displaying a stored program. 3 is a program memory for storing data of teletext programs. 4 is a decoding processing unit that decodes data of teletext programs. 5 is a display control section that converts the display data decoded by the decoding processing section 4 into RGB signals. 6 is an additional sound reproduction section that converts the additional sound data decoded by the decoding processing section 4 into an audio signal. A registration memory 7 stores numbers registered as programs to be stored in the program memory 3. 8 is a reception control section, and a key input processing section 2
In accordance with the request, the data of the corresponding program is selected from the character signals extracted by the character signal extraction section 1 and inputted to the program memory 3 or decoding processing section 4, and the registered number is stored in the registration memory 7. processing and reading out program data stored in the program memory 3 and decoding processing unit 4
Performs input processing to . a is the video signal input terminal, b is R
The GB signal output terminal and c are the audio signal output terminals.

The operation of the teletext receiving apparatus configured as described above will be explained below.

First, when a program to be stored is specified from the key input processing section 2, the reception control section 8 stores the specified number in the registration memory 7. The reception control section 8 compares the program of the program data output from the character signal extraction section 1 with the number stored in the registration memory 7, and stores the program data in the program memory 3 if the numbers match. Next, when the key input processing unit 2 requests display of the stored program, the reception control unit 8
reads data from the program memory 3 and outputs it to the decoding processing section 4. The decoding processing section 4 decodes the program data, outputs display data to the display control section 5, and outputs additional sound data to the additional sound reproduction section 6. The display control unit 5 inputs the display data to R.
Convert to GB signal and output.

[0007] In this way, the specified program can be stored and the stored program can then be viewed without waiting time. In addition, in teletext broadcasting, the same program is sent repeatedly at a fixed cycle, but even if a program has been stored once, by repeatedly storing it in the same area of the program memory 3, even if the content of the program is updated, it will always be updated. Data can be stored in program memory 3.

[0008]

[Problem to be Solved by the Invention] However, in the above configuration, when the contents of a teletext program are updated, the updated data is stored in the memory and the data before the update is lost. There was a problem in that the information before the update could not be stored even after the update.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a teletext receiving apparatus that can output programs stored in a memory to an external storage device such as a VTR with a simple operation.

0010

[Means for Solving the Problem] In order to achieve this object, the teletext receiving device of the present invention specifies a memory for storing data of a teletext program and a program number of the teletext program to be stored in the memory. a registration means, a decoding means for decoding data of a teletext program, converting it into a video signal, and outputting the same;
The present invention is comprised of data selection means for sequentially inputting all data of teletext programs stored in the memory to the decoding means at fixed time intervals, and instruction means for instructing the operation of the selection means.

[0011]

[Operation] With this configuration, by operating the instruction means, all the program data stored in the memory can be converted into video signals and output, so if this is recorded on a VTR etc., the teletext program can be output. Even if the content is updated, it is possible to view the content before the update.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block configuration of a teletext receiver according to an embodiment of the present invention.

In FIG. 1, 1 is a character signal extraction section, 2 is a key input processing section, 3 is a program memory, 4 is a decoding processing section, and 5 is a character signal extraction section.
Reference numeral denotes a display control section, 6 an additional sound reproduction section, a a video signal input terminal, b an RGB signal output terminal, and c an audio signal output terminal, all of which are the same as the configuration shown in FIG. 2.

Reference numeral 9 denotes an encoder that converts the RGB signal into a composite video signal. Reference numeral 10 denotes data selection means for sequentially inputting all data stored in the program memory 3 to the decoding processing section 4 at regular time intervals in accordance with instructions from the key input processing section 2. d is a video signal output end.

The operation of the teletext receiving apparatus configured as described above will be explained below with reference to FIG.

The teletext receiving apparatus of this embodiment can basically operate in the same way as the conventional teletext receiving apparatus shown in FIG.

[0018] In accordance with the user's key operation instructions, the key input processing section 2 requests the reception control section 2 to stop its operation, and at the same time requests the data selection means 10 to start its operation. The data selection means 11 sequentially inputs the data stored in the program memory 3 to the decoding processing section 4 at regular time intervals. The decoding processing section 4 decodes the program data, outputs display data to the display control section 5, and outputs additional sound data to the additional sound regeneration section 6. The display control unit 5 converts the display data into RG
The additional sound regenerating section 6 converts the additional sound data into an audio signal and outputs it. The composite video signal encoder 9 converts the RGB signal into a composite video signal and outputs it to the video signal output terminal d.

Therefore, by connecting the output terminals d and c to the VTR and recording the output video and audio signals, all programs stored in the program memory 3 can be stored.

As described above, according to this embodiment, the program memory 3 stores the data of the teletext program, the decoding processing section 4 converts the data of the teletext program into display data and additional sound data, and the display data a display control unit 5 that converts RGB signals into RGB signals, a composite video signal encoder 9 that converts RGB signals into video signals, an additional sound playback unit 6 that converts additional sound data into audio signals, The decoding processing unit 4 sequentially decodes data of all teletext programs at fixed time intervals.
data selection means 10 to be input to the data selection means 10;
By providing key input means 2 for instructing the operation of
All programs stored in the program memory 3 can be easily stored in an external storage device, and even if the contents of a teletext program are updated, the data before the update can be known.

Note that the time interval at which the data selection means 10 inputs the data in the program memory 3 to the decoding processing section 4 may be changed by giving an instruction from the key input means 2.

FIG. 3 is a flowchart showing a method for reading teletext program data stored in a memory at regular time intervals, and FIG. 3 is a flowchart showing a method for storing it in a memory.

[0023]

[Effects of the Invention] As described above, the present invention includes a memory for storing teletext program data, a registration means for specifying the program number of the teletext program stored in the memory, and a method for decoding the teletext program data. a decoding output means for converting and outputting a video signal; a data selection means for sequentially inputting all data of a teletext program stored in the memory to the decoding means at regular time intervals; and an operation of the selection means. By providing an instruction means to give an instruction, if the instruction means is operated,
Even after the contents of a teletext program are updated by storing all programs stored in a memory in an external storage device, the program before the update can be viewed.

[Brief explanation of the drawing]

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

[Fig. 2] Flow diagram showing the data reading method of the present invention

[
Figure 3: Flow diagram for recording teletext program data in memory

[Figure 4] Functional block diagram of a conventional teletext receiving device

[Explanation of symbols]

2 Key input processing section 3 Program memory 4 Decryption processing unit 5 Display control section 6 Additional sound playback section 7 Registration memory 8 Reception control section 9 Composite video signal encoder 10 Data selection means

Claims (4)

[Claims] 1. A memory for storing data of a teletext program, a registration means for specifying a program number of the teletext program to be stored in the memory, and a device for decoding the data of the teletext program, converting it into a video signal, and outputting the video signal. a decoding output means; a data selection means for sequentially inputting all data of the teletext program stored in the memory to the decoding output means at regular time intervals;
A teletext receiving apparatus characterized by comprising instruction means for instructing the operation of the selection means. 2. A memory for storing data of a teletext program, a registration means for specifying a program number of the teletext program to be stored in the memory, and a decoding output means for decoding and outputting the data of the teletext program. A text character characterized by comprising data selection means for sequentially inputting all data of the teletext program stored in the memory to the decoding output means at fixed time intervals, and instruction means for instructing the operation of the selection means. Broadcast receiving device. 3. A method for reading teletext program data, which reads out all data in a memory in which the teletext program data is stored at regular time intervals according to a memory address. 4. The data of the teletext program read out by the data reading method according to claim 3 is automatically transmitted to the VTR through decoding processing output means and composite video signal encoder means, so that all the characters in the memory are automatically read out. A method for recording teletext program data, characterized in that broadcast program data is recorded.