JPH0263284A - Teletext receiver - Google Patents

Abstract

PURPOSE:To confirm whether a broadcast is a teletext broadcast or a television broadcast by outputting an audio signal in the audio broadcast mode selected by a changeover means from a sounding means and applying display corresponding to the outputted from the sounding means. CONSTITUTION:The audio in the audio broadcast mode selected by changeover means 32, 34 switching the audio broadcast mode is outputted from sounding means 33, 35 and a control means 36 controlling an operation such as display corresponding to the outputted audio is provided. Thus, in the case of a teletext broadcast on the received pattern, only the audio broadcast is changed into the sound of the television broadcast by switching the changeover means 32, 34. Moreover, a command is given to display an indication such as 'television sound' onto a character generator 39 being a display means from the control means 36. Thus, the viewer can easily confirm that the present audio broadcast mode is the sound of the television broadcast.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a teletext receiving device that can receive teletext multiplex broadcasts (hereinafter referred to as teletext) in addition to normal television broadcasts.

[Summary of the invention]

The present invention is a teletext receiving device capable of receiving teletext broadcasts in addition to normal television broadcasts, the first display indicating the audio broadcast mode of the teletext signal and the audio broadcast mode of the normal television broadcast signal. It has a display means for performing a second display, and a switching means for switching between the respective audio broadcasting modes, and outputs the sound of the audio broadcasting mode selected by the switching means from the sound emitting means, and also outputs the sound of the audio broadcasting mode selected by the switching means. A control means is provided for controlling the display to correspond to the sound outputted from the sound means, so that even if the receiving screen is a text broadcast, only the sound can be switched to the sound of the television broadcast. Furthermore, the system allows the viewer to confirm whether the current audio broadcast is a text broadcast or a television broadcast.

[Conventional technology]

In recent years, text broadcasting has been carried out in which text information is transmitted superimposed on the vertical blanking period of a video signal of normal television broadcasting, and the receiving side extracts this text information and displays it on a picture tube.

Teletext broadcasting allows viewers to repeatedly broadcast dozens to hundreds of programs with the latest information in addition to regular television broadcasts, such as news, weather forecasts, stock price information, and program guides. You can get the information you want.

Furthermore, for example, a service can be provided to people with hearing impairments in which lines from TV dramas and TV movies are superimposed and displayed as subtitles on TV movies and the like.

In teletext broadcasting, after the image information of the characters or figures is converted into a digital signal, the 10th H (H is a horizontal period) to the 21st H, and in even fields, the 2nd
It is superimposed and transmitted between 730th and 284th H.

Therefore, in order to receive the teletext, a dedicated teletext receiving device is required that incorporates a character processor that extracts the digital signal from the video signal and generates a signal for the picture tube.

Figure 4 shows this sophisticated conventional teletext receiver.
In the figure, fl) is a receiver main body with a built-in character processor, and (2) is a remote control device that gives various commands to the receiver main body +11 via near-infrared rays. The receiver body +11 has a light receiving window (3) for receiving near-infrared rays from a remote control device, and a group of operation keys on the main body side for setting the reception channel, audio volume, etc. The video reception modes of this receiver main body (1) include a television broadcast reception mode (TV mode) for receiving normal television broadcasts and a teletext reception mode (text mode) for receiving teletext broadcasts. Super modes such as subtitle super mode are included in TV mode for convenience. Furthermore, the audio broadcast mode includes a normal television broadcast signal mode (television audio mode) and a teletext signal mode (text audio mode) corresponding to these two reception modes. In the case of text voice mode, a melody, additional sounds, etc. are emitted.

To set this reception mode, first
) After setting the reception channel using the channel setting key (5) and number keys (6), press the letter key (
7) Or press the TV key (8) to set text mode or TV mode. Therefore, for example, when the first channel is selected, if the first channel of television broadcasting and the first channel of teletext broadcasting are in the 0 character mode, the program of the teletext program can be selected using the magazine key (9). After specifying one of the groups 0 to 9 (usually automatically set to O), enter the program number oo of the magazine in the program key pair (10).

-999 must be specified. To update the page during the program, the user only needs to operate a pair of page keys (11).

Such conventional teletext receiving apparatuses are disclosed, for example, in Japanese Patent Application Laid-Open No. 165582/1982, Japanese Patent Application No. 332397/1982, and Japanese Utility Model Application No. 182753/1983 all filed by the present applicant.

[Problem to be solved by the invention]

In conventional teletext receiving apparatuses, when the reception mode is the text mode, the audio broadcast mode is also the text/audio mode. Therefore, for example, as shown in FIG. 4, when the reception mode is text mode and the teletext program P1 is projected on the picture tube surface (19), the viewer can only hear text sounds such as melodies. could not. However, in text broadcasting, the importance of audio information is small, and in such cases it would be more convenient if only the audio could be switched to the audio broadcast of normal television broadcasting on the same channel. Furthermore, in such a case, it would be more convenient if the viewer could confirm whether the audio is from a teletext broadcast or a television broadcast.

The present invention has been made in view of these points, and its purpose is to be able to switch the audio broadcast to normal television broadcast audio even if the receiving screen is teletext. To provide a teletext receiving device that allows a viewer to confirm whether the current audio broadcast is a teletext broadcast or a television broadcast.

[Means to solve the problem]

The teletext receiving device according to the present invention, as shown in FIG. 1, for example, has a first display (for example, "text audio") indicating the audio broadcast mode of the teletext signal, and a first display indicating the audio broadcast mode of the normal television broadcast signal. It has a character generator (39) as a display means for performing a second display (for example, "TV audio"), and switching means (32) and (34) for switching between these audio broadcast modes. The audio of the audio broadcasting mode selected by (32) and (34) is output from the sound emitting means (33) and (35), and it corresponds to the sound output from these sound emitting means (33) and (35). For example, a control means (3
6).

[For production]

According to the present invention, even if the receiving screen is a teletext broadcast, only the audio broadcast can be changed to the audio of the television broadcast by switching only the switching means (32) and (34). . Furthermore, in this case, by giving a command from the control means (36) to the character generator (39) serving as the display means to display, for example, "television audio", the viewer can confirm that the current audio broadcast mode is set to television broadcasting. It can be easily recognized that the voice is 61.

〔Example〕

Hereinafter, the first embodiment of the teletext receiving device of the present invention will be described.
The explanation will be made with reference to the drawings. In FIG. 1, parts corresponding to those in FIG. 4 are given the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 1 shows an example in which the present invention is applied to a teletext receiving device that can also support audio multiplex broadcasting.
) shows the receiver main body as a whole, and (1st) is a remote control device that gives various commands to the receiver main body (20). The remote control device (18) is the same as the remote control device (2) in FIG. 4, except that a dual voice voice switching key (12) and a TV voice/text voice voice switching key (13), which will be described later, are added. is the same as Dual audio switching key (12)
is used to switch the audio broadcast from main → sub → main / sub-main in the case of bilingual Japanese broadcasting, and the audio switching key (13) is used to switch only the audio broadcast from the audio of the television broadcast to the text broadcast when the text screen is displayed. This is used to periodically switch between the audio of the TV broadcast and the audio of the television broadcast.

Here, the broadcast radio waves with the teletext superimposed are transmitted to the antenna (21
), the tuner (22) selects the channel, and the video intermediate frequency amplification circuit (23) outputs the video carrier wave Vl and the audio multiplex signal S1.
It is separated into The video carrier wave Vl is connected to the video detection circuit (24
) is detected and the video signal ■. The signal is then supplied to a video processing/deflection circuit (25) and a character processor (41), which will be described later. The video processing/deflection circuit (25) generates R, G, and B component signals, which are three primary color signals, and these three primary color signals are input to one input terminal group of the RGB processor (26). The other input terminal group of this ROB processor (26) receives the three primary color signals R and G generated by the character processor (41).

B is supplied, and the RGB processor (26) switches the above-mentioned 2Mi three primary color signals in response to the switching signal Y from the character processor (41) and outputs the color picture tube (27).
to drive.

Moreover, the audio multiplex signal Sl is processed by the main channel signal processing circuit (
28) is commonly supplied to the sub-channel signal processing circuit (29) and the control signal processing circuit (30), and is commonly supplied to the main channel signal processing circuit (28) and the sub-channel signal processing circuit (28).
The output signals of 9) are respectively supplied to the input terminals of the matrix circuit (31). In addition, the control signal processing circuit (30)
Then, the subcarrier in the audio multiplex signal Sl is 922.5112.
When the subcarrier is amplitude modulated with 982.5 fiz, set the 2 audio symbol (30a), which indicates bilingual Japanese broadcasting, to high level "1", and when the subcarrier is amplitude modulated with 982.5 fiz, it is stereo. Stereo broadcast signal (30b) indicating that it is a broadcast
) is set to high level "1". Therefore, when the two audio symbols (30a) and the stereo broadcast signal (30b) are both at low level rOJ, the audio signal of the channel being received is monaural.

Here, the matrix circuit (31) is provided with a right channel audio signal (31a) and a left channel audio signal (31b), and when the stereo broadcast signal (30b) of the control signal processing circuit (30) is at a high level, Both channel audio signals (31a) and (31b) correspond to stereo broadcasting. Furthermore, when the second audio signal (30a) is at a high level, the control signal (36a) output from the channel selection micro amplifier (36), which will be described later, causes the two channel audio signals (31a) and (31b) to The signal corresponds to the main, sub, or main/sub broadcast audio mode, and when the audio is monaural, both channel audio signals (31a) and (31b) are the same audio signal.

Furthermore, the right channel audio signal (31a) is connected to the switch (3
Sound is emitted from the right speaker (33) through one fixed contact and movable contact of 2), and the left channel audio signal (31b
) is emitted from the left speaker (35) via one fixed contact and a movable contact of the switch (34).

In addition, (36) is a microcomputer (CPU) for channel selection.
), and the optical signal from the remote control device (18) is converted into a data code by a receiving circuit (37) including a light receiving element, and is loaded into the built-in RAM of the channel selection CPU (36).

The built-in RAM of this channel selection cpυ (36) is stored at a high level when the current audio broadcast mode is teletext audio.
0 channel selection CPU equipped with an audio flag that becomes "1", a mode flag that becomes high level "1" when the current screen (receiving mode) is a character screen, and a double audio flag.
(36) decodes the data code and tuner (2)
2) Change the receiving channel by changing the tuning voltage,
This channel selection uses the control signal (36a) to switch the matrix circuit (31), and the control signal (36b) to switch the movable contacts of the switches (32) and (34). The CPU (36) is equipped with MNOS (M
etarised N1tride-Oxide 5i
A licon type memory (38) is attached. In this example, this MNO5 type memory (38) is used as a non-volatile memory for storing the reception mode etc. before the power is turned off. Further, (39) is a character generator, and this character generator (39)
) outputs three primary color signals R, G, and B corresponding to the characters of the reception channel and audio broadcast mode displayed on the screen.
These three primary color signals are connected to the connection points (40a) and (40b)
and (40C) are superimposed on the three primary color signals output from the ROB processor (26) and sent to the color picture tube (2).
7). Therefore, the color picture tube (27)
On the picture tube surface (19) is a character generator (39).
), the reception channel and audio broadcast mode set in the channel selection CPt1 (36) are displayed on the screen.

Further, (41) is a character processor, which receives the input video signal ■. Extracts the signal of the teletext program specified by the channel selection CP (36), decodes it, and stores it in the built-in Panzer memory, and transmits this stored character signal once every 1/60 seconds. The RGB processor (
26). Further, the character processor (41) controls switching of the RGB processor (26) using the switching signal Y, so that the character screen is displayed independently on the color picture tube (27).
Or, the text screen is displayed superimposed on the television broadcast. At the same time, this character processor (41) converts the melody and additional sounds designated by the character signal into analogs and outputs them as additional sound signals (41a) using the switch (32) and (
34) to each other fixed contact. The movable contacts of these switches (32) and (34) are channel selection C.
Since they are switched simultaneously by the control signal (36b) of the PU (36), the right speaker (
A common additional sound signal (41a) is emitted from the left speaker (33) and the left speaker (35). Therefore, the audio in teletext reception mode is always monaural.

Next, the operation when switching the audio broadcasting mode in the example shown in Fig. 1 will be explained with reference to Fig. 2. It is assumed that the teletext screen is set and the audio broadcast mode is also teletext audio. Therefore, the CPU for channel selection
The "audio flag" and "mode flag" in the built-in RAM of (36) are both at high level "1".

The channel selection CPLI (36) in FIG. 1 normally executes the main routine in FIG. If there is no human power, other processing (step (10)
1))) and return to the beginning of the main routine.

When there is key power, the process moves to step (102), where the data code sent from the receiving device (37) is decoded, it is determined whether or not it is due to the pressing of the voice switching key (13), and the voice switching is performed. If the key (13) is not pressed, other key manual processing (step (103)) is performed, and if the voice switching key (13) is pressed,
The channel selection CPU (36) proceeds to step (104),
The state of the mode flag in the built-in RAM of the channel selection CPU (36) is checked, but in this example, the mode flag is set to high level rlJ (character screen), so the process moves to step (105). However, when the mode flag is at the low level rOJ (television broadcast screen) in step (104), the channel selection CPU (36) returns to the beginning of the main routine without taking any action, and presses the audio switching key. The press (13) will be ignored.

Further, in step (105), the CPU for channel selection (3
Step 6) checks the audio flag to determine whether the current audio broadcast is teletext audio. Since the audio is currently used for teletext broadcasting, the channel selection CPU (36) moves to step (106) and first sets the audio flag to low level r.
After setting OJ, switch (32) and (
34) to one of the fixed contact sides to which the right channel signal (31a) and left channel signal (31b) are respectively supplied, and the audio of the television broadcast of channel 7 is output from the speakers (33) and (35). At step (107) in the 0th order in which sound is to be emitted, the character generator (39) is commanded to output a signal corresponding to the number of the receiving channel and the characters of "TV audio". Therefore, as shown to the third prisoner, on the picture tube surface (19) there is a 7" channel display D0 superimposed on the teletext program P1 and a second message indicating that the audio is that of a television broadcast. "TV audio" is displayed on the screen as display D2. When the TV audio is dual language broadcasting, the dual audio switching key (12) of the remote control device (18) shown in FIG. It is also possible to switch between main, sub, main/sub, etc.

Next, the voice switching key (1) of the remote control device (18) in Fig.
When 3) is pressed again, the audio flag is now at the low level "0", so the channel selection CPυ (36) shifts from the second step (105) to step (10B). In step (108), the channel selection CPU (
36) sets the sound flag to high level "1" and then switches the movable contacts of switches (32) and (34) in FIG. 1 to the additional sound signal (41a) output from the character processor (41). is switched to the other fixed contact side to which the signals are respectively supplied, so that the audio broadcast is switched to the audio of the teletext broadcast.

After that, CPt1 (36) for channel selection goes to step (109).
At this point, the character generator (39) shown in FIG. 1 is instructed to output a signal corresponding to the number of the receiving channel and the characters of "character voice". Therefore, as shown in FIG. 3B, on the picture tube surface (19) there is a channel number and a screen display of "text audio" as the first display D1 indicating that the audio is the audio of teletext broadcasting. display) is done.

As explained above, the teletext receiving apparatus of this embodiment has the advantage that even if the receiving screen is a teletext broadcast, only the audio broadcast can be switched to the audio of the television broadcast.

In addition, the words "TV audio" or 6-letter audio are displayed on the picture tube surface (19) corresponding to the audio broadcast mode, so viewers can confirm that the current audio broadcast is the audio of the television broadcast. There is an advantage in that it is possible to confirm without error whether the audio is from teletext or teletext.

Here, in the teletext receiving device of this example, the first display and the second display Dz are displayed on the picture tube surface (19), but the present invention is not limited to this, For example, the configuration may be such that it is provided close to the picture tube surface (19) and the audio broadcast mode is displayed using an ED or the like.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that changes can be made without departing from the gist of the present invention.

〔Effect of the invention〕

Since the teletext receiving device of the present invention is configured as described above, even if the receiving screen is teletext, only the audio broadcast can be switched to the audio of the television broadcast, and the current audio Viewers can determine whether the broadcast is a teletext broadcast or a television broadcast.
E'a has practical benefits.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an example of a teletext receiving device of the present invention;
Fig. 2 is a flowchart for switching the audio broadcasting mode in the example shown in Fig. 1, Fig. 3 is a line diagram showing an example of the screen display in the example shown in Fig. 1, and Fig. 4 is a diagram showing a conventional teletext receiving device. FIG. (18) is a remote control device, (20) is a receiving device main body, (
32) and (34) are switches, (36) is a CPU for channel selection, (39) is a character generator, (41)
is a character processor.

Claims (1)

[Scope of Claims] Display means for performing a first display indicating an audio broadcast mode of a teletext signal and a second display indicating an audio broadcast mode of a normal television broadcast signal, and switching between the respective audio broadcast modes. a switching means for performing the above-mentioned audio broadcasting mode selected by the switching means, and controls the sound emitting means to output the sound of the audio broadcasting mode selected by the switching means, and to perform the above-mentioned display corresponding to the sound output from the sound emitting means. A teletext receiving device characterized by having a control means.