JPH05144241A - Cs sound broadcasting receiver - Google Patents

Abstract

PURPOSE:To confirm a signal on another channel without interrupting a signal to which a user is listening by a method wherein an interlocking switch is changed over, a signal to which the user is listening is output from a left speaker or a right speaker and a signal used to confirm its content is output form the right speaker or the left speaker. CONSTITUTION:In a state that a first L-signal 27 and a first R-signal 28 are output from a left speaker and a right speaker 6, 7 via a stereo amplifier 5 and that a second L-signal 29 and a second R-signal 30 are input to and being recorded on a cassette deck 8, interlocking switches SW1, SW2 are changed over to respective sides of contacts (b), (d). Then, the signals 27, 28 are output from the speaker 6 or 7 as a monaural signal and the signals 29, 30 as signals to be confirmed are output from the speaker 7 or 6 as a monaural signal. By this constitution, it is possible to confirm the signal on another channel without interrupting the signal to which a user is listening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver capable of receiving CS (communication satellite) audio broadcasting in which 6 audio channels are time-division multiplexed per channel and simultaneously reproducing audio channels of 2 programs. , C provided with a switching function for simultaneously listening to the audio channels of the two programs
S audio broadcasting receiver. In the following, each of the six programs will be referred to as an "audio channel", and the audio channel of the six programs time-division multiplexed will be simply referred to as a "channel". For example, the former is the first audio channel, the second audio channel, etc., and the latter is the first audio channel, the second audio channel.
It is called a channel, etc.

[0002]

2. Description of the Related Art FIG. 2 is a main block of an example of a conventional CS voice broadcasting receiver. In the figure, 21 is a CS audio broadcast receiver, 22 is a tuner, 23 is a demodulation unit, 24 is a channel selection unit, 25 is a first audio system, 26 is a second audio system, and 27 is a first left analog audio output. Signal (hereinafter referred to as the first L signal), 28
Is a first right analog audio output signal (hereinafter referred to as a first R signal), 29 is a second left analog audio output signal (hereinafter, referred to as a
Reference numeral 30 denotes a second right analog audio output signal (hereinafter referred to as a second R signal). Select the desired channel with the tuner 22 from the signal from the antenna,
After demodulation (MSK demodulation method, etc.) in the demodulation unit 23, 6 in the channel selection unit 24
Two desired audio channels are selected from the audio channels, and the first audio system 25 and the second audio system 26 are respectively selected.
And supply to. As shown in the figure, PCM decoding, D / A conversion, and other processing are performed on each audio system to generate a first L signal 27, a first R signal 28, a second L signal 29, and a second R signal 30, respectively. obtain. Then, the first L signal 27 and the first R signal 28 are set as normal listening signals and input to a stereo amplifier or the like. The second L signal 29 and the second R signal 30 are input to a cassette deck or the like as so-called back program recording signals.

[0003]

In the case of FIG. 2, the second L
The signal 29 and the second R signal 30 have a drawback that it is not possible to confirm by ear whether or not they have predetermined contents and whether they are correctly output to a cassette deck or the like. SUMMARY OF THE INVENTION In order to solve such a drawback, an object of the present invention is to provide a CS voice broadcasting receiver capable of performing confirmation by listening to a voice being recorded if necessary without interrupting the voice currently being listened to. To do.

[0004]

SUMMARY OF THE INVENTION The present invention provides a CS audio broadcast receiver provided with a first audio system and a second audio system, wherein a first left analog audio output in the first audio system is provided. A first mixing circuit for mixing the signal and the first right analog audio output signal and outputting the mixed signal as a first monaural audio output signal; a second left analog audio output signal in the second audio system; A second monaural audio output signal which is mixed with the right analog audio output signal of
Mixing circuit, a first switching circuit for switching and outputting the first left (or right) analog audio output signal and the first monaural audio output signal, and the first right (or left) analog An audio output signal and the second monaural audio output signal are switched and output, and when the first switching circuit selects the first monaural audio output signal, the second monaural audio output signal is selected. The first switching circuit selects the first left (or right) analog audio output signal when the first switching circuit selects the first left (or right) analog audio output signal. And a second switching circuit that switches in tandem with the above switching circuit, and in the first or second mixing circuit, the level of the second monaural audio output signal is the first monaural audio output signal. Than the level And provides a CS voice broadcast receiver sets the gain of the respective circuit so fence.

[0005]

If the first switching circuit and the second switching circuit are switched in conjunction with each other as needed, the signal currently being listened to is from the left (or right) speaker, and the signal on the side for confirming the content etc. is to the right ( Or left) each is output as a monaural signal from the speaker. After checking, the switching circuit is returned to the original state.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A CS voice broadcasting receiver according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of essential parts showing an embodiment of a CS audio broadcasting receiver according to the present invention. In the figure, the same parts as those in FIG. 2 are designated by the same reference numerals and the details are omitted, and 1 is a first mixing circuit and 2 is a second mixing circuit.
Mixing circuit, 3 is a first switching circuit (hereinafter, SW1), 4 is a second switching circuit (hereinafter, SW2), 5 is a stereo amplifier,
Reference numeral 6 is a left speaker, 7 is a right speaker, and 8 is a cassette deck.

Next, the operation of the present invention will be described. In normal use, SW1 is on the a terminal side and SW2 is on the c terminal side. As a result, the first L signal 27 and the first R signal 28 are output from the left and right speakers via the stereo amplifier 5. On the other hand, the second L signal 29 and the second R signal 30 are input to the cassette deck 8 and recorded. Furthermore, the first
L signal 27 and first R signal 28 of the first mixing circuit 1
A monaural signal (first monaural audio output signal, hereafter referred to as a first monaural signal) to the b terminal side of SW1, and the second L signal 29 and the second R signal 30 are mixed with the second mixing circuit. A monaural signal (second monaural audio output signal, hereinafter referred to as a second monaural signal) is supplied by 2 to the d terminal side of SW2.

Here, when it is desired to confirm whether the input to the cassette deck 8 is as planned, or whether the data is normally output to the cassette deck 8,
SW1 and SW2 are interlocked and switched to the b terminal side and the d terminal side, respectively. By this switching, the first L signal 27 and the first R signal 28 that have been heard until then are confirmed as a monaural signal (first monaural signal) from the left speaker 6 by the second L signal 29 and the second L signal 29. The R signal 30 of the right speaker 7 is also used as a monaural signal (second monaural signal).
Each of them can be reproduced at the same time to confirm the above. Then, at this time, the output level of the second monaural signal is made lower than the output level of the first monaural signal in order to distinguish the first monaural signal from the second monaural signal. The gain adjustment can be performed by either the first or second mixing circuit, but it is advisable to use the second mixing circuit 2. This is because if the first monaural signal is kept at a volume that is substantially the same as the volume before the switching, it is less uncomfortable. Also, the first
The mixing circuit 1 and the second mixing circuit 2 are composed of circuits having a buffering or amplifying function rather than being composed of a simple resistor or the like for the left and right separation performance, impedance matching, and ensuring of a specified level. By doing so, it is possible to prevent the influence on the impedance matching of the second mixing circuit 2 with respect to the cassette deck 8 and the level reduction. Note that, unlike in FIG. 1, there is no problem even if the connections in SW1 and SW2 are changed so that the first monaural signal is output from the right speaker and the second monaural signal is output from the left speaker.

[0009]

As described above, according to the present invention, 2
When selecting two audio channels at the same time, listening to one and recording the other, if necessary, check whether the signal of the other channel is output correctly, etc. Since it can be eliminated, it has an effect of avoiding erroneous recording and contributes to the improvement of the function as the CS audio broadcast receiver.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts showing an embodiment of a CS voice broadcast reception according to the present invention.

FIG. 2 is a main block showing an example of a conventional CS audio broadcast receiver.

[Explanation of symbols]

1 First Mixing Circuit 2 Second Mixing Circuit 3 First Switching Circuit (SW1) 4 Second Switching Circuit (SW2) 5 Stereo Amplifier 6 Left Speaker 7 Right Speaker 8 Cassette Deck 21 CS Audio Broadcast Receiver 22 Tuner 25 First audio system 26 Second audio system 27 First left analog audio output signal (referred to as first L signal) 28 First right analog audio output signal (referred to as first R signal) 29 2 Left analog audio output signal (referred to as second L signal) 30 2nd right analog audio output signal (referred to as second R signal)

Claims (2)

[Claims] 1. A CS audio broadcast receiver comprising a first audio system and a second audio system, wherein a first left analog audio output signal and a first right analog audio in the first audio system are provided. A first mixing circuit that mixes the output signal with each other and outputs as a first monaural audio output signal, a second left analog audio output signal and a second right analog audio output signal in the second audio system. A second mixing circuit for mixing and outputting as a second monaural audio output signal, and a first for switching and outputting the first left (or right) analog audio output signal and the first monaural audio output signal. Switching circuit,
When the first right (or left) analog audio output signal and the second monaural audio output signal are switched and output, and when the first switching circuit selects the first monaural audio output signal, Selecting a second monaural audio output signal, and selecting the first right (or left) analog audio output signal when the first switching circuit selects the first left (or right) analog audio output signal As described above, the CS voice broadcast receiver is provided with a second switching circuit that switches in conjunction with the first switching circuit based on the switching operation. 2. The amplification degree of each of the first and second mixing circuits is set so that the level of the second monaural audio output signal is lower than the level of the first monaural audio output signal. The CS audio broadcast receiver according to claim 1, characterized in that.