JPH0614307A - Television image receiver with character broadcasting receiving function - Google Patents

Abstract

PURPOSE:To provide a television image receiver with a character broadcasting receiving function which can display a program title so as to superimpose it to its program image based upon a television(TV) signal in current broadcasting and simpify its display operation. CONSTITUTION:A program name display mode is selected by the key operation of an operation part 13. In the program name dipsaly mode, a program identification(ID) information detecting circuit 15 detects a program ID signal corresponding to a TV signal being received at present and an operation part controlling channel selection circuit 14 detects program ID information having a number coincident with the program ID signal from broadcasting program list information. The circuit 14 applies an instruction for outputting the title information of a program relating to the detected program ID information to a switch to a teletext decoder 12 and applies also a switching operation instruction for mutually outputting the TV signal and the title information to a CRT 7 to a switch circuit 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a teletext receiving function.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, a television receiver having a teletext reception function selects a television broadcast signal received by an antenna 1 and outputs the selected television broadcast signal. The tuner 2 for converting into an intermediate frequency signal (IF signal) is provided. The intermediate frequency signal is supplied to the detection circuit 4 via the intermediate frequency amplification circuit 3. The detection circuit 4 detects a video signal from the intermediate frequency signal.
The television signal of the video signal is amplified and signal-processed in the video amplifier circuit 5, and then output to the cathode ray tube 7 through the switch circuit 6.

The audio signal of the video signals is taken out by the intercarrier method, and is output as audio from the speaker 11 via the audio intermediate frequency amplification circuit 8, the audio detection circuit 9 and the audio amplification circuit 10.

The teletext signal contained in the video signal is extracted by the teletext decoder 12. The extracted teletext signal is converted into a corresponding information signal by a decoding operation. The information signal is output to the cathode ray tube 7 via the switch circuit 6.

The operation of the teletext decoder 12 is controlled by the operation section control channel selection circuit 14. Operation unit control tuning circuit 1
In No. 4, a normal mode for displaying an image corresponding to a television signal on the cathode ray tube 7 and a teletext mode for displaying an image corresponding to an information signal obtained from the teletext signal on the cathode ray tube 7 are set. ing. The operation section control channel selection circuit 14 performs control for executing each mode and control for channel selection operation of the tuner 2.

When the normal mode is selected, the operation section control channel selection circuit 14 controls the switching operation of the switch circuit 6 so that the television signal from the video amplifier circuit 5 is output to the cathode ray tube 7. When the teletext mode is selected, the operation section control channel selection circuit 14 controls the switching operation of the switch circuit 6 so that the information signal from the teletext decoder 12 is output to the cathode ray tube 7.

An instruction for the control operation of the operation section control channel selection circuit 14 is given by a key operation of the operation section 13. As shown in FIG. 5, the operation unit 13 includes a channel selection key 13a, a text key 13b which is an operation key for selecting a teletext mode, and a television key 13c which is an operation key for selecting a normal mode. And are provided. In the teletext mode, the channel selection key 13a is used as a teletext page input key, and the page of the teletext screen is selected by operating the channel selection key 13a.

When using the broadcast program information included in the teletext, the teletext mode is selected by operating the text key 13b of the operation unit 13, and the teletext decoder 12 selects the teletext included in the video signal. The signal is extracted and decoded. From the information signal obtained by the decoding of the teletext decoder 12, the information signal corresponding to the broadcast program guide is the channel selection key 1 of the operation unit 13.
Selected by the operation of 3a, the program guide is displayed on the cathode ray tube 7.

From the program guide displayed on the cathode ray tube 7, the user can know the title of the program being broadcast in the current normal mode and the broadcast start time of the desired program.

Next, by operating the television key 13c of the operation unit 13, the teletext mode is switched to the normal mode, and the broadcast program is displayed on the cathode ray tube 7.

However, when the user wants to know the program title currently being broadcast in the normal mode, the display screen of the cathode ray tube 7 is changed from the display screen of the program currently being broadcast to the teletext mode by a switching operation from the normal mode to the teletext mode. Since the screen can be switched to the program guide display screen in the text mode, the user cannot know the program title while watching the program currently being broadcast. Moreover, every time the program title is confirmed, a switching operation from the normal mode to the teletext mode and a selection operation for selecting the broadcast program guide information included in the teletext signal are required, which is troublesome.

[0012]

As described above, in the conventional television receiver having the teletext receiving function,
In the normal mode, when a character broadcast including the broadcast program guide information showing the program guide of the broadcast program as a still image is provided, the program identification information included in the character broadcast while displaying the program currently being broadcast on the cathode ray tube 7. Can not know the program title. Moreover, every time the program title is confirmed, a switching operation from the normal mode to the teletext mode and a selection operation for selecting the program guide information included in the teletext signal are required, which is troublesome.

The present invention is a teletext including a television signal, program identification information for identifying a broadcast program by the television signal, and broadcast program guide information showing a program guide of the broadcast program by the television signal as a still image. When a television broadcast signal in which the signal and the signal are multiplexed is provided, the program title can be superimposed and displayed on the program image of the currently broadcast television signal, and the display operation is simplified. It is an object of the present invention to provide a television receiver with a teletext receiving function that can be used.

[0014]

SUMMARY OF THE INVENTION The present invention is a broadcast program showing a television signal, a program identification signal for identifying a broadcast program by the television signal, and a program guide of the broadcast program by the television signal as a still image. With a teletext reception function for receiving a television broadcast signal multiplexed with a teletext signal containing table information and displaying a video corresponding to this television signal and a still image corresponding to the teletext signal on the display means. A television receiver, a television signal receiving means for selecting a predetermined television signal from the television broadcast signal, and displaying an image corresponding to the television signal on the display means,
A teletext signal receiving means for extracting the teletext signal from the television broadcasting signal and decoding the extracted teletext signal to display a still image corresponding to the teletext signal on the display means; Program identification information detecting means for detecting a program identification signal corresponding to a broadcast program by a selected television signal, and the current broadcast program guide information based on the program identification signal detected by the program identification information detecting means. Control for extracting program name information corresponding to the broadcast program name and displaying on the display means while superimposing a still image representing this program name information and the image of the broadcast program by the currently selected television signal And control means for performing.

[0015]

[Operation] In a television receiver with a teletext receiving function of the present invention, a program identification signal corresponding to a broadcast program by a currently selected television signal is detected, and the program identification signal is detected based on the detected program identification signal. The program name information corresponding to the current broadcast program name is extracted from the broadcast program table information, and the still image showing this program name information and the image of the broadcast program by the currently selected television signal are superimposed and displayed. Display on the means.

In recent years, there has been realized a system in which a program identification signal for identifying a program is superimposed on a television broadcast signal for broadcasting, and the receiving side can detect the program identification information and control the operation of the receiver. (VPS in Germany
(Video program system)). On the other hand, a system in which broadcast program guide information representing a broadcast program guide by a television signal as a still image is provided as a part of teletext information has also been implemented, and the program identification information is included in the broadcast program guide information. I came to be able to include the number.

When the user wants to know the name of the television broadcast program currently being received using this service, the program identification information circuit detects a program identification signal corresponding to the broadcast program by the television signal currently being received. To be done. Program name information corresponding to the current broadcast program name is extracted from the broadcast program table information based on the detected program identification signal, and the signal corresponding to this program name information is a television signal from the television signal receiving means. Is displayed on the display means while being superimposed on the image corresponding to. Therefore, it is possible to easily know the program name while watching the broadcast program by the television signal.

[0018]

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

FIG. 1 is a block diagram showing an embodiment of a television receiver with a teletext receiving function of the present invention. FIG. 2 is a block diagram showing an operation unit used in the television receiver with the teletext receiving function of FIG. 1, and FIG. 3 is a diagram showing an example of broadcast program information by a teletext signal.

A television signal, program identification information for identifying a broadcast program by the television signal, and a teletext signal including broadcast program information showing a program table of the broadcast program by the television signal as a still image are multiplexed. As shown in FIG. 1, a television receiver with a teletext reception function for receiving a television broadcast signal that has been selected selects a television broadcast signal received by an antenna 1 and then selects the selected television broadcast. Signal to an intermediate frequency signal (IF
The tuner 2 for converting into a signal) is provided. The intermediate frequency signal is supplied to the detection circuit 4 via the intermediate frequency amplification circuit 3. The detection circuit 4 detects a video signal from the intermediate frequency signal. The video signal includes a television signal and this audio signal, a program identification signal for identifying a broadcast program by this television signal, and a teletext signal. The program identification signal includes numerical information corresponding to the broadcast start time of the program, for example.

The television signal of the video signals is amplified and signal-processed in the video amplifier circuit 5, and then output to the cathode ray tube 7 through the switch circuit 6.

The audio signal of the video signals is taken out by the intercarrier method, and is output as audio from the speaker 11 via the audio intermediate frequency amplifier circuit 8, the audio detector circuit 9 and the audio amplifier circuit 10.

The teletext signal is extracted from the video signal by the teletext decoder 12. The extracted teletext signal is converted into a corresponding still image video signal by a decoding operation, and this video signal is output to the cathode ray tube 7 via the switch circuit 6.

The teletext signal is a signal indicating predetermined information in a still image such as characters and figures, and as one of the information, broadcast program guide information for representing a program broadcast by a television signal is provided. is there. As shown in FIG. 3, the broadcast program guide information includes a program title, a broadcast start time of the program, and program identification information indicating a number for identifying the program, and usually the broadcast time. The program title is displayed as a still image, and the program identification signal is displayed together with the broadcast time and the program title by a special display request operation. The number indicated by the program identification information corresponds to the number indicated by the program identification signal.

The program identification signal included in the video signal is detected by the program identification information detection circuit 15. The program identification signal detected by the program identification information detection circuit 15 is given to the operation unit control channel selection circuit 14.

The operation section control channel selection circuit 14 causes the cathode ray tube 7 to display a normal mode for displaying an image corresponding to a television signal on the cathode ray tube 7 and an image corresponding to an information signal obtained from a teletext signal. And a program name display mode for displaying the program name on the cathode-ray tube 7 while superimposing the program name on the video corresponding to the television signal, and the operation unit control channel selection circuit 14 executes each mode. And the tuning operation of the tuner 2 are controlled.

When the normal mode is selected, the operation section control channel selection circuit 14 controls the switching operation of the switch circuit 6 so that the television signal from the video amplifier circuit 5 is output to the cathode ray tube 7.

When the teletext mode is selected, the operation section control channel selection circuit 14 controls the switching operation of the switch circuit 6 so that the information signal from the teletext decoder 12 is output to the cathode ray tube 7.

When the program name display mode is selected, the operation section control channel selection circuit 14 causes the teletext decoder 12 and the number indicated by the program identification signal from the program identification information detection circuit 15.
The program identification information of the broadcast program guide information extracted in step 3 is compared with the number indicated by the program identification information, and the program identification information having a number matching the number indicated by the program identification signal is detected. Switch the title information of the program corresponding to the detected program identification information to the switch 2
To the teletext decoder 12, and a switching operation instruction for alternately outputting the television signal from the video amplifier circuit 5 and the information signal from the teletext decoder 12 to the cathode ray tube 7 is given to the switch circuit 6. Given.

An instruction for the operation of the operation unit control channel selection circuit 14 is given by a key operation of the operation unit 13. As shown in FIG. 2, the operation unit 13 includes a plurality of channel selection keys 13a, a text key 13b which is an operation key for selecting a teletext mode, and a television which is an operation key for selecting a normal mode. A key 13c and a program title display key 13d, which is an operation key for selecting a program name display mode, are provided.

The channel selection key 13a is used as a teletext page input key in the teletext mode, and the teletext page is selected by operating the channel selection key 13a.

Next, the operation of the television receiver will be described.

In the normal mode, the cathode ray tube 7 has
The broadcast program corresponding to the television signal selected by operating the channel selection key 13a is displayed.

Next, the operation of the television receiver with the teletext receiving function will be described.

[0035] For example, the user is currently broadcasting the program "NE
When the user wants to know the program title while watching "WS", he / she operates the program title display key 13d of the operation unit 13. By operating the program title display key 13d, the program identification information detection circuit 15 detects a program identification signal corresponding to the television signal currently being received, and the operation unit control channel selection circuit 14 is detected.
The number [90] that matches the program identification signal number [900]
0] is detected from the broadcast program guide information.

The title information of the program associated with the detected program identification information ("NEWS" in FIG. 3)
Is output to the switch 2, the operation unit control channel selection circuit 14
Is given to the teletext decoder 12 from
A switching operation instruction for alternately outputting the television signal from the video amplifier circuit 5 and the title information from the teletext decoder 12 to the cathode ray tube 7 is given to the switch circuit 6.

The television signal and the title information are alternately switched and output to the cathode ray tube 7, and the cathode ray tube 7 displays the program title "NEWS" superimposed on the program image by the television signal currently being received. To be done.

With the above, the program title display key 13d
With the operation of, the title of the program can be easily known while viewing the currently received broadcast program.

It is also possible to set a mode in which the program title is superimposed and displayed on the video of the broadcast program each time the channel selection key 13a is operated in the normal mode. Also, when performing timer recording by VTR, it is possible to set a mode for recording the program title of the broadcast program to be recorded at the start of recording, and by this mode setting, the program title can be confirmed when the recorded broadcast program is reproduced. You can

[0040]

As described above, according to the television receiver with the teletext receiving function of the present invention, the television signal, the program identification information for identifying the broadcast program by the television signal, and the television. When a television broadcast signal is provided that is multiplexed with a teletext signal that includes broadcast program guide information that shows the broadcast program guide of a broadcast program by a television signal as a still image, the program video by the television signal currently being broadcast is provided. The program titles can be displayed in a superimposed manner and the display operation can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a television receiver with a teletext receiving function of the present invention.

FIG. 2 is a configuration diagram showing an operation unit used in the television receiver with a teletext receiving function shown in FIG.

FIG. 3 is a diagram showing an example of broadcast program guide information included in a teletext signal.

FIG. 4 is a block diagram showing a conventional television receiver having a teletext receiving function.

5 is a configuration diagram showing an operation unit used in the television receiver with a teletext receiving function shown in FIG. 4;

[Explanation of symbols]

 1 antenna 2 tuner 3 intermediate frequency amplification circuit 4 detection circuit 5 video amplification circuit 6 switch circuit 7 cathode ray tube 8 audio intermediate frequency amplification circuit 9 audio detection circuit 10 audio amplification circuit 11 speaker 12 teletext decoder 13 operation unit 13a channel selection switch 13b text Key 13c Television key 13d Program title display key 14 Operation unit control channel selection circuit 15 Program identification information detection circuit

Claims (1)

[Claims] 1. A teletext signal including a television signal, a program identification signal for identifying a broadcast program by the television signal, and broadcast program guide information showing a program guide of the broadcast program by the television signal as a still image. A television receiver with a teletext receiving function for receiving a television broadcast signal that is multiplexed, and displaying on a display means a still image corresponding to a video corresponding to the television signal and a teletext signal, Television signal receiving means for selecting a predetermined television signal from the television broadcast signal and displaying an image corresponding to the television signal on the display means; and extracting the teletext signal from the television broadcast signal. Then, by decoding the extracted teletext signal, the corresponding static text signal is decoded. A teletext signal receiving means for displaying an image on the display means, a program identification information detecting means for detecting a program identification signal corresponding to a broadcast program by a currently selected television signal, and the program identification information detecting means. Program name information corresponding to the current broadcast program name is extracted from the broadcast program guide information based on the detected program identification signal, and a still image representing this program name information and a broadcast program by the currently selected television signal And a control means for performing control for displaying on the display means while superimposing the image of the above.