KR19980040384A - Volume automatic adjustment device by stereo program broadcasting detection - Google Patents

Abstract

The present invention provides a volume automatic adjustment device by detecting a stereo program broadcast. A control unit for controlling the overall device, a PWM generator for outputting a pulse width modulation (PWM) signal for volume control according to a predetermined control signal from the control unit, and a signal output from the PWM generator for integrating the integrated level A television receiver comprising: an integrated circuit section for outputting an adjustment signal and a voice processing section for adjusting a volume level output to a speaker in accordance with an adjustment level output from the integration circuit; A KBPS decoder for extracting and decoding KBPS code data containing broadcast information from a broadcast signal received by an antenna, and received code data indicating that the program is stereo program broadcast by searching the KBPS code data detected by the KBPS decoder is received. And a control unit for controlling the overall apparatus and controlling the output volume down to a predetermined level through the PWM generation unit and the integrating circuit unit according to the comparison result signal applied from the code comparison unit. It is characterized by.

Description

Volume automatic adjustment device by stereo program broadcast detection

In general, the microprocessor included in the television receiver is configured to execute a control operation for the entire apparatus based on a user's adjustment command through a remote control operation or a control program set in itself.

1 is a diagram for explaining a control operation of a microprocessor in a conventional general television receiver.

In Fig. 1, (1) is an antenna for receiving an over-the-air broadcast signal, (2) is a tuner for tuning a broadcast signal of a channel selected by a user among the broadcast signals received through this antenna (1), (3) is an intermediate frequency amplifying unit for amplifying the intermediate frequency signal output from this channel tuner (2), and (4) an image intermediate frequency signal and an audio from the intermediate frequency signal output from the intermediate frequency amplifying unit (3). A video signal / audio signal separation section composed of, for example, a surface acoustic wave filter or the like for separating the frequency signal, and (5) an audio signal for detecting the audio signal from the audio intermediate frequency signal output from the video signal / audio signal separation section 4. Detecting section 6 denotes an image detecting section for detecting an image signal from an image intermediate frequency signal.

In addition, reference numeral 7 denotes a bass, treble, and balance with respect to the speech signal detected by the speech detector 5 in accordance with a predetermined control signal from the microprocessor 15 to be described below. And an audio processing section for amplifying audio signals processed by the audio processing section 7 and outputting them to the speaker 9 connected to the rear stage.

In addition, 10 denotes image processing such as contrast, tint, brightness, and the like of the image signal output from the image detector 6 according to a predetermined control signal from the microprocessor 15. Is an image processor which outputs a red (R), green (G), and blue (B; blue) signal corresponding to an image signal, and (11) is an RGB output from the image processor (10). It is a cathode ray tube drive part which drives the cathode ray tube 12 based on a signal.

Moreover, (13) is a remote control device for the viewer to remotely control the operation of the entire apparatus, (14) is a receiving unit for converting infrared signals transmitted from the remote control device 13 into electrical code signals, (15) Is a microprocessor that performs control operations for the entire apparatus based on the code signal output from the receiver.

Further, reference numeral 16 denotes a PWM generator that generates a predetermined pulse width modulated signal in accordance with a control signal from the microprocessor 15, and the base, treble and balance ( and a PWM generating circuit (not shown) necessary for controlling audio processing such as an ablance), and 17 is integrated with a corresponding PWM signal output from the PWM generating section 16 to provide a predetermined level signal. An integral circuit portion to be generated, and an integral circuit (not shown) for integrating a PWM signal output from each component of the PWM generator 16 is provided inside the integral circuit portion.

From these configurations, in the television receiver according to the conventional configuration, the microprocessor 15 outputs a predetermined control signal corresponding to the user's remote control operation through the corresponding port for the user's audio output adjustment. Accordingly, a PWM signal is generated in the PWM generating circuit, and the voice processor is controlled as an integrated signal.

On the other hand, since the volume level of the stereo program broadcast is usually easily set to an excessively high state compared to the regular broadcast program produced by the broadcasting station, when the viewer finishes the broadcast in a state where a nap is occasionally entered, There may be a case where the user suddenly wakes up because of a suddenly loud stereo program broadcast.

Moreover, in recent years, G-code scheduled recording has various problems, and broadcasting stations transmit information about each broadcast program in a specific frequency band of a broadcast signal, and the television receiver detects and demodulates the signal. As a result, the Korean Broadcast Program Service (KBPS) method, which is configured to provide rough information about program start and end times or program contents, has been developed and is in a state of practical use.

The present invention has been made in view of the above circumstances, and based on the Korean Broadcast Program Service (KBPS) data signal transmitted from a broadcasting station, a stereo program broadcast section is detected to determine an output level of a voice in stereo program broadcast. It is an object of the present invention to provide a television receiver equipped with an automatic volume control by detecting a stereo program broadcast that is configured to automatically adjust down to a level.

1 is a block diagram illustrating a sound output device of a conventional television receiver.

Fig. 2 is a block diagram showing the internal structure of a television receiver with a volume automatic adjustment function by stereo program broadcast detection according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: antenna 2: tuner

3: Intermediate Frequency Amplifier 4: Video / Audio Separator

5: Voice detector 6: Image detector

7, 27: voice processing unit 8: voice amplifier

9: speaker 10: image processing unit

11: Cathode ray tube drive part 12: Cathode ray tube

13: Remote control device 14: Receiver

15, 25: microprocessor 16: pulse width modulated signal generator

17: integral circuit part

20: Korean broadcast program service decoder

21: code comparison

According to the present invention for realizing this object, a television receiver having a volume control device automatically by detecting a stereo program broadcast signal includes a control unit for controlling the overall apparatus and a pulse width for adjusting the volume in accordance with a predetermined control signal from the control unit. A PWM generator which outputs a modulation (PWM) signal, an integration circuit unit which integrates the signal output from the PWM generator and outputs an adjustment signal corresponding to the integrated level, and a speaker according to the adjustment level output from this integration circuit. A television receiver having a speech processing unit for adjusting an output volume level, comprising: a KBPS decoder for extracting and decoding KBPS code data containing broadcast information from a broadcast signal received by an antenna, and detected by the KBPS decoder; Search for KBPS code data to indicate that it is a stereo program broadcast A code comparator for determining whether the contracted code data has been received, and controls the overall apparatus, and lowers the output volume to a predetermined level through the PWM generator and the integral circuit according to the comparison result signal applied from the code comparator. It characterized in that it comprises a control unit for controlling.

The apparatus for automatically adjusting the volume by detecting a stereo program broadcast detects a stereo program broadcast section based on a data signal of a KBS (Korean Broadcast Program Service) transmitted from a broadcasting station, and adjusts the audio output level during the stereo program broadcast to a predetermined level. There is an advantage that can be adjusted automatically down.

According to the configuration of the present invention as described above, there is an advantage that the audio output level during stereo program broadcasting can be automatically lowered to a predetermined level by detecting a stereo program broadcasting section based on a data signal of a Korean broadcast program service transmitted from a broadcasting station. have.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing an internal configuration of a television receiver having a volume automatic adjustment function by stereo program broadcast detection according to an embodiment of the present invention. In this figure, components that perform the same functions as those shown in FIG. 1 are given the same reference numerals, and description thereof will be omitted.

In FIG. 2, reference numeral 20 denotes a KBPS decoder unit for detecting a KBPS code signal included in a broadcast signal and recognizing program information on the basis of this. Here, the KBPS decoder unit 20 is not shown in the figure. However, based on the synchronization signal, a KBPS data extraction unit for detecting a KBPS code signal ubiquitous in a specific band of the broadcast signal is provided.

Further, reference numeral 21 denotes a code comparison unit for retrieving whether the contracted code data indicating the stereo program broadcast has been received by searching the KBPS code data detected by the KBPS decoder 20, and controlling the overall apparatus. In addition, according to the comparison result signal applied from the code comparator 21 is a microprocessor as a control unit for controlling the output volume through the PWM generation unit 16 and the integrating circuit unit 17.

Next, the operation of the device having the above configuration will be described.

When the television receiver is driven with the power of the television receiver turned ON, the video signal of the channel tuned by the tuner 2 is detected by the video detector 6, and then the detected video signal is sent to the video processor. Is output. The KBPS decoder 20 extracts KBPS code data from the composite video signal output from the image detector 6 and decodes the extracted data.

On the other hand, since the contracted code data indicating that the stereo program is broadcast is set in the code comparator 21, the code comparator 21 is based on the code data for the stereo program broadcast set as a reference value in itself. Various KBPS code data applied from the KBPS decoder 20 are compared.

As a result of the comparison, when the code data detected by the KBPS decoder unit 20 and the stereo program broadcast marker code data set in the code comparison unit 21 itself match, the code comparison unit 21 is the microprocessor 25. For example, a high level determination signal is output to the side. As a result, the microprocessor 25 controls the audio processing unit 27 so that the volume output level is adjusted down to a predetermined level through the PWM generation unit 16 and the integrating circuit unit 17.

Thus, while the stereo program is being broadcast through the speaker 9, the voice adjusted to a predetermined level is outputted.

On the other hand, when the stereo program broadcast is ended and the regular program is started again, the code data extracted by the KBPS decoder unit 20 does not match the code data set in the code comparison unit 21. A low level determination signal is output from the unit 21, for example, and the microprocessor 25 automatically returns the volume output level to the original signal level before adjustment.

That is, according to a preferred embodiment of the present invention, a stereo program broadcast section is detected based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station to detect a sound output level during stereo program broadcast. Automatic downward adjustment is possible.

On the other hand, the present invention is not limited to the preferred embodiment as described above, it will be fully understood by those skilled in the art that various modifications and changes may be made without departing from the technical gist of the present invention.

As described above, according to the present invention, a stereo program broadcast section is detected based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station to detect an output level of a voice in stereo program broadcast. Provides a TV receiver with automatic volume control by detecting stereo program broadcasts, which is configured to automatically adjust down.

To this end, a television receiver having a volume automatic adjustment device according to the stereo program broadcast detection according to the present invention includes a control unit for controlling the overall apparatus and a pulse width modulation (PWM) signal for volume adjustment in accordance with a predetermined control signal from the control unit. A PWM generator for outputting a signal, an integrated circuit for outputting an adjustment signal corresponding to the integrated level by integrating the signal output from the PWM generator, and a volume level output to the speaker according to the adjustment level output from the integration circuit. A television receiver comprising an audio processing unit for adjusting; A KBPS decoder for extracting and decoding KBPS code data containing broadcast information from a broadcast signal received by an antenna, and received code data indicating that the program is stereo program broadcast by searching the KBPS code data detected by the KBPS decoder is received. And a code comparator for determining whether or not the electronic device is controlled, and a controller for controlling the overall apparatus and controlling the output volume down to a predetermined level through the PWM generator and the integrated circuit according to the comparison result signal applied from the code comparator. With this configuration, the stereo program broadcasting section is detected based on the data signal of the Korean Broadcast Program Service (KBPS) transmitted from the broadcasting station, and the audio output level during the stereo program broadcasting is automatically lowered to a predetermined level. There is an advantage to this.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and in particular, to detect a stereo program broadcasting section based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station, and to set the audio output level during stereo program broadcasting to a predetermined level. The present invention relates to a television receiver having a volume automatic adjustment function by a stereo program broadcast detection configured to automatically adjust a voice output level by a stereo program broadcast detection to a predetermined level so as to automatically adjust downward.

Claims (3)

A control unit for controlling the overall device, a PWM generator for outputting a pulse width modulation (PWM) signal for volume control in accordance with a predetermined control signal from the control unit, and integrates the signal output from the PWM generator to correspond to the integrated level A television receiver having an integral circuit section for outputting an adjustment signal to be output, and an audio processing section for adjusting a volume level output to a speaker in accordance with an adjustment level output from the integration circuit; A KBPS decoder for extracting and decoding KBPS code data containing broadcast information from a broadcast signal by an antenna; A code comparison unit for retrieving KBPS code data detected by the KBPS decoder to determine whether contracted code data indicating stereo program broadcast is received; And controlling the overall apparatus and controlling the output volume down to a predetermined level through the PWM generator and the integrated circuit according to the comparison result signal applied from the code comparator. Volume automatic adjustment device. The apparatus of claim 1, wherein the automatic volume adjustment device for detecting a stereo program broadcast detects a stereo program broadcast section based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station, and is currently broadcasting the stereo program. And automatically adjusts the audio output level to a predetermined level. The PWM generating circuit according to claim 1 or 2, wherein a PWM generating circuit (not shown) necessary for controlling voice processing such as bass, treble, balance, etc. is provided inside the PWM generator. Volume automatic adjustment device by the detection of the stereo program broadcast, characterized in that provided.