KR19980040405A - Volume automatic adjustment device by commercial detection - Google Patents

Abstract

The present invention detects an advertising section based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station, and automatically adjusts the audio output level during a commercial broadcast to a predetermined level. The present invention relates to a television receiver having an automatic sound adjustment function by commercial detection, which is configured to automatically adjust the audio output level to a predetermined level. The control unit controls the overall apparatus and adjusts the volume according to a predetermined control signal from the control unit. A PWM generator for outputting a pulse width modulation (PWM) signal for the integrated circuit; an integral circuit unit for integrating the signal output from the PWM generator and outputting an adjustment signal corresponding to the integrated level; and an adjustment level output from the integration circuit. Voice processing unit to adjust the volume level output to the speaker accordingly In the television receiver which is provided; KBPS decoder for extracting and decoding KBPS code data containing broadcast information from the broadcast signal received by the antenna; and whether the contracted code data indicating that the advertisement is broadcast by searching the KBPS code data detected by the KBPS decoder has been 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 features.

Description

Volume automatic adjustment device by commercial 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 the 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 tuner 2, and (4) is a video intermediate frequency signal and an audio frequency signal from the intermediate frequency signal output from the intermediate frequency amplifying unit 3; Is a video signal / audio signal separation unit composed of, for example, a surface acoustic wave filter or the like, and (5) is an audio detection unit for detecting an audio signal from an audio intermediate frequency signal output from the video signal / audio signal separation unit 4. (6) is an image detector for detecting a video signal from a video 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 unit for amplifying audio signals processed by the audio processing unit 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 a control operation on the entire apparatus based on a 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 are respectively located inside the PWM generator. PWM generation circuits (not shown) necessary for the control of audio processing such as (ablance) and the like are provided, and (17) integrates the corresponding PWM signals output from the PWM generation section 16, respectively, to predetermined level signals. Is an integral circuit section for generating a circuit, and an integral circuit (not shown) for integrating a PWM signal output from each component of the PWM generating section 16 is provided inside the integral circuit section.

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 a commercial is usually easily set to an excessively high state compared to a regular broadcast program produced by a broadcasting station, when a viewer enters the broadcast in a state where a nap is occasionally entered, the viewer suddenly ends at the same time. It may be possible to wake up to a surprise when the commercial is loudly output.

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.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and based on a Korean Broadcast Program Service (KBPS) data signal transmitted from a broadcasting station, the advertisement section is detected and the output level of the voice being broadcasted is raised to a predetermined level. It is an object of the present invention to provide a TV receiver equipped with an automatic volume control by commercial detection, which is configured to automatically adjust down.

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

Fig. 2 is a block diagram showing an internal configuration of a television receiver with a volume automatic adjustment function by commercial 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: integrating circuit unit 20: Korea broadcasting program service decoder

21: code comparison

In order to realize the above object, according to the present invention, a television receiver having a volume automatic adjustment device by commercial detection has a control section for controlling the entire apparatus and a pulse width modulation for volume adjustment in accordance with a predetermined control signal from the control section. PWM generation unit for outputting (PWM) signal, integration circuit unit for integrating the signal output from this PWM generation unit and outputting the adjustment signal corresponding to the integrated level, and outputting to the speaker according to the adjustment level output from this integration circuit A television receiver comprising a sound processor for adjusting a volume level to be used; KBPS decoder for extracting and decoding KBPS code data containing broadcast information from the broadcast signal received by the antenna; and whether the contracted code data indicating that the advertisement is broadcast by searching the KBPS code data detected by the KBPS decoder has been 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 features.

That is, according to the configuration of the present invention as described above, based on the data signal of the Korean Broadcast Program Service (KBPS) transmitted from the broadcasting station detects the advertising section and the audio output level during the commercial broadcast to a predetermined level There is an advantage that can be adjusted automatically down.

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

2 is a block diagram showing the internal configuration of a television receiver having a volume automatic adjustment function by commercial 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 which detects a KBPS code signal included in a broadcast signal and recognizes program information based on 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.

In addition, (21) is a code comparison unit for checking whether the contracted code data indicating that the commercial is received by searching the KBPS code data detected by the KBPS decoder unit 20, (25) controls the overall device In addition, it is a microprocessor as a control unit that controls the output volume through the PWM generation unit 16 and the integrating circuit unit 17 according to the comparison result signal applied from the code comparison unit 21.

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 the commercial is set in the code comparator 21, the code comparator 21 is a KBPS decoder based on the code data for the commercial set as a reference value. Various KBPS code data applied from the unit 20 are compared.

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

Therefore, the voice 9 adjusted to a predetermined level is output through the speaker 9 while the advertisement program is being broadcast.

On the other hand, when the commercial is terminated and the regular program is started again, the code data extracted by the KBPS decoder 20 does not match the code data set in the code comparator 21, so that the code comparator From 21, for example, a low level determination signal is output, 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, the advertisement output section is detected based on a data signal of a Korean Broadcast Program Service (KBPS) transmitted from a broadcasting station to automatically output a voice output level during the advertisement to a predetermined level. You can adjust it downward.

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, the apparatus for automatically adjusting the volume according to the commercial detection detects the voice of the commercial by detecting the commercial section based on the data signal of the Korean Broadcast Program Service (KBPS) transmitted from the broadcasting station. There is an advantage that the output level can be automatically adjusted to a predetermined level.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television meditation device, and in particular, detects an advertising section based on a data signal of a KBS (Korean Broadcast Program Service) transmitted from a broadcasting station, and automatically outputs a sound output level during a commercial to a predetermined level. The present invention relates to a television receiver having a volume automatic adjustment function by a commercial detection configured to automatically adjust a voice output level by a commercial detection so as to be adjusted downward.

Claims (1)

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 In the television receiver having an integrated circuit unit for outputting the adjustment signal to be output, and a voice processing unit for adjusting the volume level output to the speaker in accordance with the 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; A code comparison unit for retrieving KBPS code data detected by the KBPS decoder to determine whether contracted code data indicating that the commercial is received has been received; and 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. Adjustment device.