JPH06261259A - Television transmitter and television receiver - Google Patents

Abstract

PURPOSE:To dispense with an operation executed by a user, although it is necessary that the user executes the operation by remote control, etc., one by one, because control of an image and a voice conforming to program information cannot be executed, in the case of a conventional television. CONSTITUTION:At the time of sending out transmission a television station by a character signal encoding device 2 and a character broadcasting program sending-out device 3, the transmission is executed by adding program information (a genre of programs such as an image, music, sports, news, etc.) of a television broadcast to a signal of character broadcasting. On a television side, the program information is fetched from a character signal, and control of an image and a voice conforming to the program information is executed automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revision transmitter and a television receiver, and in particular, it decodes TV broadcast program information added to a character broadcast signal and controls video and audio in accordance with the program information. About television to do.

[0002]

2. Description of the Related Art In a conventional television, since it is not possible to control video and audio in accordance with program information, the user needs to operate each one with a remote controller or the like.

As an example, a case of surround switching will be described. As shown in FIG. 5, a conventional television receiver has a remote controller 51 for a user to select a surround, a preamplifier 52 for infrared reception in a television main body 60, and a microcomputer for generating a surround switching signal. 53 and a voice output control section 54.

When switching the surround, the user inputs the surround switching key of the remote controller 51.
The remote control signal output from the remote control 51 is input to the microcomputer 53 via the preamplifier 52. The microcomputer 53 decodes the remote control signal, and outputs the surround switching signal 56 to the audio output control unit 54 when the surround switching is performed.

[0005]

Since the conventional television cannot control the video and audio according to the program information, the user needs to operate the remote control or the like one by one.

An object of the present invention is to provide a television transmitter and a television receiver which solves the above-mentioned drawbacks and which does not need to be operated by a remote controller or the like.

[0007]

The structure of a television transmitter of the present invention comprises means for transmitting a character signal added with program information by superimposing it on a part of a vertical blanking period of a video signal. It is characterized by being provided.

The television receiver of the present invention has a character signal decoder for decoding TV broadcast program information added to a character broadcast signal, and surround switching according to the program information decoded by the decoder. And a means for controlling video switching.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing a television transmitter according to an embodiment of the present invention.

In FIG. 1, a television program transmitting apparatus 1 according to the present embodiment, a character signal encoding apparatus 2 for adding television broadcast program information to a character signal, and a character broadcasting program transmitting apparatus 3 are shown.
And a character signal multiplexing device 4 for superimposing a character signal on a video signal, a television transmitter body 5 for transmitting radio waves, and an antenna 7.

The character signal to which the program information is added in the character signal encoding device 2 is sent to the character signal multiplexing device 4 via the character broadcast program sending device 3. The character signal input to the character signal multiplexing device 4 is transmitted to the television program transmitting device 1
Superimposed on part of the vertical blanking period of the video signal from
It is transmitted from the television transmitter body 5.

FIG. 2 is a diagram showing a data structure of a character signal in the character broadcast of the embodiment shown in FIG. In FIG.
The character signal in this embodiment includes a bit synchronization code 21 and a byte synchronization code 22 for achieving synchronization, a service identification section indicating a transmission method, and a prefix section 33 including a packet control for controlling transmission of data packets. , A data block section 24 composed of data such as characters and figures encoded as information data and program information
It is composed including and.

The main difference from the data structure of teletext broadcasting currently performed is that a part of the data block section 24 is assigned to program information.

The program information mentioned here is the genre of broadcast programs such as video, music, sports, news and the like.

FIG. 3 is a block diagram showing a television receiver according to an embodiment of the present invention. Referring to FIG. 3, a television receiver with surround automatic switching function according to an embodiment of the present invention includes an antenna 38 and a tuner section 3 for selecting a channel.
1, a video demodulation amplification section 32, an audio demodulation amplification section 33,
A character signal decoder unit 34 for extracting and demodulating a character signal from a video signal, a video / audio switching unit 35 for switching between television broadcasting and character broadcasting, an audio output control unit 36, a video output control unit 37, and program information matching Microcomputer 38 for selecting surround, speaker 39, CR
And T40.

The video signal received by the tuner section 31 is
At the same time as being input to the video demodulation / amplification unit 32, it is also input to the character signal decoder 34. The character signal decoder 34 extracts a character signal from the video signal, demodulates it, and outputs it to the audio output control unit 36 and the video output control unit 37 via the video / audio switching unit 35.

In the television of this embodiment, the character signal decoder 34 takes out the program information added to the character signal and notifies the microcomputer 38 which controls the audio output of the program information. The microcomputer 38 selects the optimum surround based on the program information from the character signal decoder 34, and outputs the surround switching signal 30 to the audio output control unit 36. As described above, it is possible to automatically switch to surround that matches program information.

Further, by using the program information as in the above embodiment, for example, the function shown in FIG. 4 can be realized. In the example of FIG. 4, if the drama you want to watch is postponed due to an extension of the baseball broadcast and you do not know when it will start, watch the BS or video until the drama starts and automatically when the drama starts. You can switch to a TV.

[0019]

As described above, the present invention has an effect that video and audio can be automatically controlled according to the content of a broadcast program.

[Brief description of drawings]

FIG. 1 is a block diagram showing a television transmitter according to an embodiment of the present invention.

FIG. 2 is a diagram showing a data structure of a character signal in a character broadcast which is an embodiment of FIG.

FIG. 3 is a block diagram showing a television receiver with surround automatic switching function of the television receiver according to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of a television using the program information of FIG.

FIG. 5 is a block diagram showing a prior art television receiver.

[Explanation of symbols]

 1 TV program transmission device 2 Character signal transcoding device 3 Character broadcasting program transmission device 4 Character signal multiplexing device 5 TV transmitter main body 21 bit synchronization code 22 byte synchronization code 23 prefix part 24 data block part 31 tuner 32 video demodulation amplification part 33 audio demodulation amplification section 34 character signal decoder section 35 video / audio switching section 36, 54 audio output control section 37 video output control section 38, 53 microcomputer 51 remote control 52 preamplifier

Claims (2)

[Claims] 1. A television transmitter comprising means for transmitting a character signal to which program information is added by superimposing it on a part of a vertical blanking period of a video signal. 2. A character signal decoder for decoding TV broadcast program information added to a character broadcast signal,
A television receiver comprising means for controlling surround switching and video switching in accordance with program information decoded by the decoder.