JPH05137094A - Television receiver incorporating satellite broadcast receiver - Google Patents

Abstract

PURPOSE:To record or listen to a digital audio signal outputted from a BS decoder via external equipment not providing with a D/A converter by providing a terminal from which the digital audio signal inputted from the outside is outputted by applying D/A conversion. CONSTITUTION:A non-scrambled digital audio signal outputted from the digital audio output terminal 16 of the BS decoder 200 is inputted to the digital audio input terminal 10 of a TV receiver incorporating a satellite broadcast receiver 100 via a signal line 26. When the digital audio signal is desired to record on an analog tape recorder 19, a switch 4 is switched to terminal 10 side. Thereby, the digital signal inputted from the terminal 10 is inputted to the D/A converter 5 via the switch 4, and is converted to an analog audio signal, and is outputted to terminals 11L, 11R, then, it is recorded on the recorder 19. Therefore, the external equipment not providing with the D/A converter can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver with a built-in satellite broadcast receiver, and more particularly to analogization of digital audio signals output from the BS decoder when the BS decoder is connected.

[0002]

2. Description of the Related Art There are two transmission modes for satellite broadcasting at present: A mode and B mode. The A mode has four channels, two of which are used for television audio broadcasting, and the other two channels are used for independent audio broadcasting unrelated to television broadcasting.
The satellite broadcast receiver can switch and listen to the television audio broadcast and the independent audio broadcast.

By the way, the satellite broadcast sound is a signal transmitted as a digital sound and can be heard as a sound signal by converting it into an analog sound signal through an A / D converter. However, in the current satellite broadcasting receiver, there is an output terminal (1) for outputting an analog audio signal obtained by converting a received digital audio signal by a D / A converter to the outside and a D / A converter. It has two output terminals, the output terminal (2) that outputs the digital audio signal as it is to the outside. Also, depending on the model, it is possible to selectively output by switching between television audio broadcasting and independent audio broadcasting for each of the analog audio output terminal (1) and the digital audio output terminal (2).

Further, depending on the model, there is one that can output different audio channels from the analog audio output terminal (1) and the digital audio output terminal (2). It is considered that such a function will be added to a BS decoder necessary for receiving pay satellite broadcasting in the future.

However, when a BS decoder is connected to a television receiver (so-called BS built-in television) having a built-in satellite broadcast receiver, the analog audio output of this BS decoder is input to the television receiver. If you want to record an independent audio broadcast that is selectively output to the digital audio output terminal of the BS decoder while listening to the audio of the received program, you need to use an expensive external recording such as a digital audio pre-coder. Equipment is required, analog tape recorder
It had the drawback that it couldn't be recorded in Da.

[0006]

When a BS decoder is connected to a television receiver having a built-in satellite broadcast receiver, the analog audio output of the BS decoder is input to the television receiver to receive a program. However, if you want to listen to independent audio broadcasting output from the digital audio output terminal of the BS decoder, you can listen to the audio of the BS decoder, and an external device equipped with a D / A converter at the digital audio output terminal. However, there is a drawback that an inexpensive analog tape recorder cannot be used especially when recording the independent audio broadcast or the like.

In view of the above, the present invention eliminates the above-mentioned drawbacks. When the analog audio output from the BS decoder is input to the television receiver side, the digital output from the BS decoder is output. An object of the present invention is to provide a television receiver with a built-in satellite broadcast receiver that can record or listen to an audio output signal via an external device that does not include a D / A converter.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a television receiver having a receiving circuit for receiving satellite broadcasting, and a signal converting means for converting a digital audio signal inputted from the outside into an analog audio signal, and the signal converting means. And an output terminal for outputting the analog audio signal taken out from the means to the outside.

As a configuration added to the above configuration, the signal converting means has a configuration which also serves as a signal converting means for converting a digital audio signal received by a receiving circuit for receiving satellite broadcasting into an analog audio signal.

[0010]

In the television receiver with a built-in satellite broadcast receiver of the present invention, the signal converting means converts a digital audio signal input from the outside into an analog audio signal. The output terminal outputs the analog audio signal taken out from the signal converting means to the outside.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment 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 built-in satellite broadcast receiver according to the present invention. 1 is a BS antenna for receiving satellite broadcast waves, 2 is a BS antenna 1
Selects and receives the satellite broadcast input from
BS receiver circuit that outputs digital signals and digital audio signals, 3
Is a voice amplifier circuit for amplifying voice signals input from the analog voice input terminals 8R and 8L, 4 is a switch for switching an input signal to the D / A converter 5, and 5 is D for converting a digital voice signal into an analog voice signal. / A converter, 6R, 6
L is a speaker for outputting the audio signal output from the audio amplifier circuit 3 to the outside, 7 is a bit stream output terminal for outputting the video / audio signal received from the BS receiving circuit 2 to the outside, 8R , 8L is analog voice input terminal, 9 is B
A digital audio output terminal 10 for outputting the digital audio signal output from the S receiving circuit 2 to the outside is a BS decoder 2
Digital audio input terminals for inputting digital audio signals from 00, 11L and 11R are analog audio output terminals for outputting the analog audio signals output from the D / A converter 5 to the outside. Reference numeral 14 is a scramble decoding circuit for decoding the scrambled video signal and audio signal to cancel the scramble, and 15 is for converting the digital audio signal output from the scramble decoding circuit 14 into an analog audio signal. A D / A converter, 16 is a digital audio output terminal for outputting the digital audio signal output from the scramble decoding circuit 14 to the outside, 17L,
Reference numeral 17R is an analog audio output terminal for outputting the analog audio signal output from the D / A converter 15 to the outside, 18 is a bit stream input terminal for inputting a bit stream signal into the BS decoder 200, 19 Is an analog tape recorder for recording analog audio signals output from the analog audio output terminals 11R and 11L of the television receiver 100, 100 is a television receiver with a built-in satellite broadcast receiver, and 200 is a scrambled pay receiver. It is a BS decoder that descrambles satellite broadcast programs.

Next, the operation of this embodiment will be described. The scrambled signal of the satellite broadcast received by the BS receiving circuit 2 of the television receiver 100 with a built-in satellite broadcast receiver via the BS antenna 1 is transmitted from the bit stream output terminal 7 via the signal line 21 to the BS decoder 200. Is output to the bit stream input terminal 18. The bit stream input signal input from the bit stream input terminal 18 of the BS decoder 200 is a scramble decoding circuit 14
Is input to the digital camera, where it is descrambled and converted into a digital video signal and audio signal. Two lines of the digital audio signal are generated, one line of which is output from the scramble decoding circuit 14 to the D / A converter 15,
The other one system is output to the digital audio output terminal 16.
The D / A converter 15 converts the input digital audio signal into an analog audio signal and outputs it to the analog audio output terminals 17R and 17L. The analog audio signals output from the analog audio output terminals 17R and 17L are input to the analog audio input terminals 8R and 8L of the television receiver 100 via the signal line 22. The audio amplifier circuit 3 amplifies the analog audio signal input from these terminals and outputs it from the speakers 6R and 6L.

On the other hand, the non-scrambled digital audio signal output from the digital audio input terminal 16 of the BS decoder 200 is input to the digital audio input terminal 10 of the satellite receiver built-in television receiver 100 via the signal line 26. It is input to the terminal b of the switch 4.
Here, when it is desired to record the digital audio signal non-scrambled by the BS decoder 200 by, for example, the analog tape recorder 19, the switch 4 is switched to the terminal b side by an operation switch (not shown) or the like. As a result, the digital audio signal input from the digital audio input terminal 10 is transferred to D via the switch 4.
It is input to the / A converter 5. The D / A converter 5 converts the input digital audio signal into an analog audio signal and outputs it to the analog audio output terminals 11R and 11L. The analog audio signals output from the analog audio output terminals 11R and 11L are input to the analog tape recorder 19 via the signal line 25 and recorded.
In addition, normally, the switch 4 is switched to the terminal a side,
A satellite broadcast digital audio signal received by the BS receiving circuit 2 is input. Therefore, the digital audio signal of the satellite broadcast is converted into an analog audio signal by the D / A converter 5, and this is converted into an analog audio output terminal 11R,
It is output from 11L to the outside.

According to the present embodiment, the scrambled received video signal and the received audio signal of the satellite broadcast are descrambled by the BS decoder 200, and the analog audio signals output from the analog audio output terminals 17R and 17L are Television receiver 100 with built-in satellite receiver
When inputting to the BS and outputting from the speaker 6, the BS
The digital audio signal output from the digital audio output terminal 16 of the decoder 200 is converted into analog audio by using the D / A converter 5 of the television receiver 100 with a built-in satellite broadcast receiver, and the analog audio output terminals 11R and 11L. Can be output externally. Therefore, the independent audio signal or the like that has been non-scrambled by the BS decoder 200 can be recorded by the inexpensive analog tape recorder 19. Also, the analog audio output terminal 11
If an ordinary analog amplifier is connected to R and 11L, the independent audio signal can be heard.

[0015]

As described above, according to the television receiver with a built-in satellite broadcast receiver of the present invention, when the analog audio output from the BS decoder is input to the television receiver side, The digital audio output signal output from the BS decoder can be recorded or listened to via an external device not equipped with a D / A converter.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a television receiver with a built-in satellite broadcast receiver according to the present invention.

[Explanation of symbols]

1 ... BS antenna 2 ... BS receiving circuit 3 ... Audio amplifying circuit 4 ... Switch 5 ... D / A converter 6R, 6L ... Speaker 7 ... Bit stream output terminal 8R, 8L ... Analog audio input terminal 9, 16 ... Digital audio output Terminal 10 ... Digital audio input terminal 11R, 11L, 17R, 17L ... Analog audio output terminal 18 ... Bit stream input terminal 19 ... Analog tape recorder

Claims (2)

[Claims] 1. A television receiver including a receiving circuit for receiving satellite broadcasts, comprising signal conversion means for converting a digital audio signal input from the outside into an analog audio signal.
A television receiver with a built-in satellite broadcast receiver, comprising: an output terminal for outputting an analog audio signal taken out from the signal converting means to the outside. 2. The satellite broadcasting according to claim 1, wherein the signal converting means is also used as signal converting means for converting a digital audio signal received by a receiving circuit for receiving satellite broadcasting into an analog audio signal. Television receiver with built-in receiver.