JP3208256B2 - Audio processing output device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio processing apparatus having a headphone jack, and more particularly to a television receiver having an earphone jack.

[0002]

2. Description of the Related Art Conventionally, an audio processing device (particularly a television receiver or stereo equipment) has a terminal for connecting as a sound reproducing means a speaker for outputting sound to the surroundings, an earphone or headphones for personal viewing by a user. Is provided.

[0003] The earphones or headphones used usually have different internal impedances among manufacturers and the like.
Further, even if the impedance is the same, the efficiency of the reproduced sound is different. Therefore, for example, in a television receiver being viewed, even if the sound reproduced from the speaker has just the right volume, the sound may be heard at a high volume or at a low volume using earphones or headphones.

Therefore, there is a need to adjust the volume when using or not using the earphones or headphones.

In order to solve the disadvantage, FIG.
Conventionally, there is an audio processing device as shown in FIG.

The audio signals L (left) and R (right) are AM / FM
Audio signals are demodulated from broadcasts such as broadcasts and television broadcasts, and magnetic recording members (audio tapes,
The signal is output from an audio generation circuit 9 for demodulating an audio signal from an audio storage member such as an MD or an optical storage member (CD, CD-ROM, etc.) and is input to a main control circuit 3 '.
In the main control circuit 3 ', the magnitude of the audio signal is controlled by a microcomputer (hereinafter referred to as "microcomputer") 1. Then, the signal is amplified by a predetermined amount in the main amplifier 4 ′ and reproduced as sound on the speaker 7.

[0007] The memory 2 stores main output audio data and external output audio data, which are read and written under the control of the microcomputer 1, and serve as data used for controlling each control circuit.

The magnitude of the audio signal output from the audio generation circuit 9 is controlled by an external control circuit 10 under the control of a microcomputer. Then, the signal is amplified by a predetermined amount in the external amplifier 11 and output to the external terminal 6. One end of the above-described earphone or headphone or the like is connected to the external terminal 6, and a sound is reproduced from the connected other end.

Next, the operation will be described with reference to FIG.

Normally, when no earphones or headphones are used, the non-use is detected by the external detection circuit 5 ', and the microcomputer 1 makes the external control circuit 10 inactive.
Therefore, the audio signal is not output to the external terminal 6 but is output only from the speaker 7.

At this time, when a main volume up / down key provided on an operation means such as a main body operation section for controlling the microcomputer 1 or a remote controller (not shown) is operated, the volume of the reproduced volume is adjusted.

Next, when an earphone or a headphone is used, the use is detected by the external detection circuit 5 ', and the microcomputer 1 deactivates the main control circuit 3' and outputs a sound from the speaker 7 to minimize the volume. Does not play. And
Audio is output only from the external terminal 6.

At this time, when the main volume up / down key of the operating means for controlling the microcomputer 1 or the external volume up / down key arranged separately from this key is operated, the volume of the output volume is increased. Adjustments are made.
The main volume up / down key operates as an external volume up / down key when earphones or headphones are used.

Thus, the output sound of the speaker can be adjusted and the sound output to the external terminal can be adjusted.

[0015]

However, in this conventional example, the main control circuit and the main amplifier and the external control circuit and the external amplifier must be provided in parallel, respectively, so that the circuit configuration becomes complicated and the cost increases. There was a drawback that this would cause

The present invention solves the above problems.

[0017]

SUMMARY OF THE INVENTION The present invention provides an audio output means for outputting an audio signal, an audio processing means for controlling the audio signal based on volume data stored in a storage setting means, and an audio processing means. A first audio reproducing means for reproducing the output audio signal of the first and second audio reproducing means, and a terminal means for supplying an output audio signal of the audio processing means to the second audio reproducing means; Control means for controlling;
A connection detecting means for detecting connection to the terminal means, wherein when the connection is detected by the connection detecting means, the sound processing output device outputs the output sound signal only to the second sound reproducing means. The setting means includes first sound volume data for the first sound reproducing means and second sound volume data for the second sound reproducing means, and when the connection is detected by the connection detecting means, the second sound is outputted. The second audio data is supplied to the audio processing means so as to output the output audio signal only to the reproducing means. If the connection is not detected by the connection detecting means, the output audio signal is outputted only to the first audio reproducing means. Supplying the first sound volume data to the sound processing means for output so that the sound processing means of the first sound reproduction means and the second sound reproduction means are commonly used; Dress It is intended to provide.

Also, the present invention provides an audio output means for outputting an audio signal, an audio processing means for controlling the audio signal based on the volume data stored in the storage setting means, and an output audio signal of the audio processing means. Terminal means for connecting the first sound reproducing means for reproducing the sound and the second sound reproducing means, supplying an output sound signal of the sound processing means to the second sound reproducing means, and controlling means for controlling the various means Operating means connected to the control means for operating the volume, and connection detecting means for detecting connection to the terminal means, wherein when the connection detecting means detects the connection, the second sound reproducing means In the audio processing output device that outputs the output audio signal only to the first audio data, the storage setting means stores first volume data for the first audio reproduction means and second volume data for the second audio reproduction means. Prepared, Upon detection of a connection with the serial connection detection means,
The second volume data is supplied to the audio processing unit so as to output the output audio signal only to the second audio reproduction unit, and when the operation unit is operated, the second volume data is updated. When the connection detecting means detects no connection, first sound data is supplied to the sound processing means for outputting the output sound signal only to the first sound reproducing means, and the operation means is operated. Then, by updating the first volume data, an audio processing output device is provided in which the audio processing means of the first audio reproduction means and the second audio reproduction means are commonly used. It is.

[0019]

According to the present invention, sound can be output to the main speaker and the external terminal output as required, respectively, with a simple circuit configuration.

[0020]

FIG. 1 is a circuit block diagram of an embodiment of the present invention. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 3 denotes a volume control circuit for a loudspeaker for controlling the magnitude of an audio signal by the microcomputer 1, and also serves as an external control circuit for an external terminal. Reference numeral 4 denotes a speaker amplifier, which also serves as an external amplifier for an external terminal. 5
Is almost the same as the external detection circuit 5 'of the conventional example,
The difference is that the detection result is output to the changeover switch 8.

Next, the present invention will be described with reference to FIG.

Normally, when no earphones or headphones are used, the non-use is detected by the external detection circuit 5,
Based on the detection, the microcomputer 1 reads out data related to the main sound from the first area of the memory 2 that stores the main sound volume. Then, the read audio signal is amplified by the amplifier 4 and reproduced as audio from the speaker 7 via the changeover switch 8. Here, the changeover switch 8 switches so as to output an audio signal to the speaker 7 according to a detection signal from the external detection circuit 5.

At this time, when the main volume up / down key of the operation means for controlling the microcomputer 1 is operated, the volume of the volume reproduced from the speaker 7 is adjusted, and the main audio in the first area of the memory 2 is adjusted. Update data about

On the other hand, when earphones or headphones are used, the use is detected by the external detection circuit 5, and based on the detection, the microcomputer 1 reads the volume from the second area of the memory 2 storing the volume for the earphones or headphones. Reads data related to audio. Then, the audio signal based on the read data is amplified by the amplifier 4 and output as audio from the external terminal 6 via the changeover switch 8. here,
The changeover switch 8 is switched to output the audio signal to the external terminal 6 side because the detection of the use is made by the detection signal from the external detection circuit 5.

At this time, when the main volume up / down key of the operation means for controlling the microcomputer 1 is operated, it functions as an external volume up / down key from an external terminal state,
The volume of the sound reproduced from the earphone or the headphone or the like is adjusted via the external terminal 6 and the data on the sound for the earphone or the headphone in the second area of the memory 2 is updated.

That is, as shown in Table 1, the data of the changeover switch 8 and the microcomputer 1 (stored in the memory 2) are selected and used depending on the presence or absence of the connection of the external terminal.

[0028]

[Table 1]

Therefore, one of the volume data written in the first and second areas provided in the memory 2 is read depending on the presence or absence of an external connection such as an earphone or a headphone. Or
Inconveniences such as low volume are not caused. In addition, since the circuit can be shared, the circuit configuration is simplified, which leads to cost reduction.

Here, the changeover switch 8 is switched by the output of the external detection circuit 5, but is controlled by operating means connected to the microcomputer 1 or when an earphone or the like is inserted into the external terminal 6. Needless to say, the same effect can be obtained by mechanically switching.

FIG. 2 is a block diagram of a video reproducing apparatus having a video display function such as a television receiver according to a second embodiment of the present invention. The same parts as those in the first embodiment and the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 12 denotes a reproducing circuit for reproducing a video signal and an audio signal. For example, a means for demodulating a television broadcast or a means (VTR, LTR) for reproducing a video from a recording medium.
D, CD-ROM, etc.). Reference numeral 13 denotes a video processing circuit which controls the microcomputer 1 to arbitrarily or predeterminedly adjust brightness and contrast and outputs a video signal. 1
4 displays a video signal input under control from the microcomputer 1 on a cathode ray tube (CRT) 15 at a subsequent stage.
It is a drive circuit that performs processing.

Next, the operation will be described with reference to FIG. The audio signal reproduced from the reproduction circuit 12 is processed by the audio generation circuit 9 into an audio signal that can be processed by a subsequent circuit, and the same processing as in the first embodiment is performed.

On the other hand, the video processing system operates as follows. The video signal reproduced from the reproduction circuit 12 is processed into a signal of the magnitude set by the video processing circuit 13 and a video signal desired by the user. The processed video signal is signal-converted by the drive circuit 14 so as to be displayed on the cathode ray tube 15 for viewing by the user. Therefore, the user can see the video.

Further, since the sound processed by the sound processing system is usually reproduced by the speaker 7, the user can enjoy the sound along with the video. In addition, the circuit configuration described above enables individuals to enjoy with earphones and headphones.
The reproduced sound from the speaker 7 is interrupted, and can be enjoyed by an individual using an earphone or the like.

[0036]

According to the present invention, there is provided an audio processing apparatus capable of individually adjusting and setting a speaker output volume and a reproduction volume of an external connection means such as an earphone in each use.
The volume control circuit and the amplifier can be used for both the speaker and the external connection means, and it is not necessary to provide the circuits individually, so that the circuit configuration and control are simplified, and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microcomputer (microcomputer) 2 Memory 3 Volume control circuit 4 Amplifier 5 External detection circuit 6 External connection terminal 7 Speaker 8 Changeover switch 9 Audio generation circuit 12 Reproduction circuit 13 Video processing circuit 14 Drive circuit (drive circuit) 15 CRT (CRT)

Claims (1)

(57) [Claims] 1. An audio output means for outputting an audio signal, an audio processing means for controlling the audio signal based on volume data stored in a storage setting means, and an audio signal output from the audio processing means. A terminal means for connecting the first sound reproducing means and the second sound reproducing means and supplying an output sound signal of the sound processing means to the second sound reproducing means; a control means for controlling the various means; Operating means for controlling the volume, connected to the means, and connection detecting means for detecting connection to the terminal means, wherein when the connection is detected by the connection detecting means, the output is provided only to the second sound reproducing means. An audio processing output device that outputs an audio signal, wherein the storage setting unit includes first volume data for the first audio reproduction unit and second volume data for the second audio reproduction unit; Inspection When the connection is detected by the output unit, the second volume data is supplied to the audio processing unit to output the output audio signal only to the second audio reproduction unit, and the operation of the operation unit is performed. Updating the second volume data, supplying the first audio data to the audio processing means to output the output audio signal only to the first audio reproduction means when the connection detection means detects the absence of connection; When the operation means is operated, the first sound volume data is updated so that the sound processing means of the first sound reproduction means and the second sound reproduction means are commonly used. Audio processing output device.