KR19980056955A - Sound Balance Automatic Adjustment Device of Television Receiver - Google Patents

Abstract

The present invention relates to an apparatus for automatically adjusting a voice balance of a television receiver, which is capable of automatically adjusting a balance of a voice signal output through a speaker, comprising: first integrating means for integrating a left channel signal output through a speaker; By first integrating means for integrating the right channel signal output through the speaker, voice processing means for performing balance adjustment of the audio signal output through the speaker according to a predetermined control signal, and by the first and second integrating means And a processor for controlling the speech processing means based on the detected speech level.

That is, according to the present invention, the balance adjustment is performed based on the level of the audio signal output through the speaker, so that the audio signal always has a constant sound balance regardless of the error of the television receiver itself or the error of the broadcast signal. do.

Description

Sound Balance Automatic Adjustment Device of Television Receiver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to an apparatus for automatically adjusting a voice balance of a television receiver, which is capable of automatically adjusting a balance of an audio signal output through a speaker.

1 is a configuration diagram showing the main components of a television receiver which is generally used.

In Fig. 1, reference numeral 1 is an antenna for receiving a broadcast frequency signal, 2 is a tuner for tuning a predetermined broadcast channel from a frequency signal received through the antenna 1, and 3 is output from this tuner 2. IF amplification unit for amplifying the intermediate frequency signal (IF), 4 is P / P that separates and outputs the audio intermediate frequency (SIF) and the image intermediate frequency (PIF) from the intermediate frequency signal output from the IF amplifier (3) S separation part.

In the drawing, reference numeral 5 denotes a voice detector which detects and outputs a voice signal from the voice intermediate frequency signal SIF output from the P / S separator 4, and 6 denotes the voice according to a predetermined control signal. It is a voice multiplex module that performs stereo and voice multiplex processing on the voice signal detected by the detector (5).

In the drawing, reference numeral 7 denotes an analog amount, i.e., volume, treble, base, balance, etc., for the voice signal according to a control signal from the processor 13 to be described later. 9 is an amplifying unit for amplifying the audio signal output from the voice processing unit 8 and outputting the amplified voice signal to the speakers SP1 and SP2.

In the drawing, reference numeral 9 denotes a remote control apparatus having a plurality of operation keys for the viewer to operate the television receiver, and 10 denotes an infrared signal applied from the remote control apparatus 9 into an electrical code signal corresponding thereto. 12 is a voice control data storage unit in which control data for the voice processing unit 7 set by the remote control unit 9 is stored, and 13 is a whole apparatus according to an operation signal from the remote control unit 9. Processor to control.

That is, in the above-described configuration, when the viewer turns on the television receiver, the processor 13 reads analog adjustment data stored in the voice control data storage unit 12 and controls the audio processor 7 so that the television receiver receives the audio receiver. The analog adjustment amount of the television receiver is set in the state before it is turned off.

When the viewer views the television receiver and then operates the remote controller 9 to adjust the analog amount of the audio signal, the processor 13 controls the audio processor 6 to control the analog amount according to the viewer's operation. In addition to the adjustment control, the adjustment amount adjusted by the viewer is updated and stored in the voice control data storage unit 12.

By the way, the following problem exists in the apparatus mentioned above.

That is, in the above configuration, the right channel signal R and the left channel signal L output from the voice multiplex module 6 are independently processed, amplified, and output in processing the audio signal. Therefore, when balance adjustment is made by the processor 13, the signal levels output from the left and right channel speakers SP1 and SP2 substantially have mutual errors.

In particular, the above-mentioned matters are not simply generated by the television receiver itself, but frequently occur due to an error of the broadcast signal itself transmitted from a broadcasting station or an error generated during signal transmission.

Accordingly, the present invention has been made in view of the above circumstances, and provides an apparatus for automatically adjusting the sound balance of a television receiver capable of maintaining a stable sound balance of the audio signal output through the left and right channel speakers of the television receiver at all times. The purpose is.

1 is a block diagram showing the main components of a typical television receiver.

Figure 2 is a block diagram showing a device for automatically adjusting the voice balance of the television receiver according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: antenna 2: tuner

3: IF amplification unit 4: Video / audio intermediate frequency separation unit

5: voice detector 6: voice multiple module

7: voice processing unit 8: amplifying unit

10: receiver 12: voice control data storage unit

21: remote control device 22, 23: integrating circuit

24: analog-to-digital converter 25: processor

The apparatus for automatically adjusting the sound balance of a television receiver according to the present invention for realizing the above object includes a first integration means for integrating a left channel signal output through a speaker, and a first integration for integrating a right channel signal output through a speaker. Means; a processor for controlling the speech processing means on the basis of the speech level detected by the first and second integrating means and the speech processing means for performing balance adjustment of the speech signal output through the speaker in accordance with a predetermined control signal; Characterized in that configured to include.

According to the present invention having the above-described configuration, the balance adjustment is performed based on the level of the audio signal output through the speaker, so that the audio signal always has a constant sound balance regardless of the error of the television receiver itself or the error of the broadcast signal. You can print it out.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram illustrating an apparatus for automatically adjusting a voice balance of a television receiver according to an embodiment of the present invention. In FIG. 2, the same reference numerals are given to the same parts as those of FIG. 1, and detailed description thereof will be omitted.

In FIG. 2, reference numeral 21 denotes a remote control device having a plurality of operation keys for the viewer to operate the television receiver, which is particularly selected for selecting the automatic adjustment mode for automatically adjusting the balance of the audio signal output through the speaker. It is configured with a key.

In the drawing, reference numeral 22 is a first integration circuit for integrating the audio signal output to the right channel speaker SP1, and 23 is a second integration circuit for integrating the audio signal output to the left channel speaker SP2; Is an analog / digital converter for converting signals output from the first and second integrating circuits 22, 23 into digital data.

In the drawing, reference numeral 25 denotes a processor which controls the entire apparatus in accordance with the operation of the remote controller 21, and particularly executes the automatic balance adjustment function according to the present invention.

That is, in the above-described configuration, first, when the normal operation state, that is, the balance automatic adjustment function is not set, the microprocessor 25 performs the voice processing unit (based on the balance adjustment data stored in the voice control data storage unit 12). 7).

On the other hand, when the viewer operates the remote controller 21 to select the automatic balance adjustment mode in the above-described operating state, the processor 25 adjusts the balance based on the left and right channel signal values applied from the analog / digital converter 24. The degree of distortion is determined.

That is, in the above configuration, the first and second integrating circuits 22 and 23 integrate the audio signals output to the left and right channel speakers SP1 and SP2. Accordingly, the first and second integrating circuits 22, 23 are integrated. 23, a voltage signal corresponding to the level of the audio signal output through the left and right channel speakers SP1 and SP2 is output.

The voltage values output from the first and second integrating circuits 22 and 23 are converted into digital data through the analog / digital converter 24 and input to the processor 25.

Following. The processor 25 calculates a difference value by subtracting both data input from the analog / digital converter 24, and then adjusts the balance of the voice processing unit 7 in a direction in which the difference value decreases.

By continuously repeating the above-described operation, the level of the audio signal output to the left and right channel speakers SP1 and SP2 is the same.

Therefore, in the above embodiment, it is possible to always output an audio signal having a constant sound balance regardless of the error of the television receiver itself or the error of the broadcast signal.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical scope of the present invention.

That is, for example, in the above-described embodiment, the control is performed so that the audio levels output from the left and right channel speakers are the same. However, the present invention provides the audio signal level output from the left and right channel speakers to match the balance set by the viewer. In the case of setting, the same method can be applied.

As described above, according to the present invention, it is possible to realize a device for automatically adjusting the sound balance of a television receiver, which is capable of maintaining a stable sound balance of the audio signal output through the left and right channel speakers of the television receiver at all times.

Claims (4)

The first integrating means for integrating the left channel signal output through the speaker, the first integrating means for integrating the right channel signal output through the speaker, and the balance adjustment of the audio signal output through the speaker according to a predetermined control signal. And a processor for controlling the sound processing means based on the sound processing means to be executed and the sound level detected by the first and second integrating means. The apparatus of claim 1, wherein the processor controls the audio processing means such that the left and right channel signals output to the speaker have the same level. The apparatus for automatically adjusting the sound balance of a television receiver according to claim 1 or 2, further comprising selecting means for selecting automatic balance adjustment. 2. The apparatus according to claim 1, further comprising adjustment means for the viewer to perform balance adjustment and storage means for storing balance adjustment data input by the adjustment means, wherein the processor further comprises the first and the second means. 2. The apparatus for automatically adjusting the sound balance of a television receiver, characterized in that the sound processing means is controlled so that the left and right channel signals detected by the integrating means have a balance value stored in the storage means.