KR19980038622A - How to control automatic audio mode setting on TV - Google Patents

Abstract

According to the present invention, when the voice mode check function is set, the TV is configured to independently determine the connection state of the external speaker (center speaker, left / right surround speaker), and then automatically set the voice mode to the corresponding surround mode from the connection state. The present invention relates to a control method for automatic audio mode setting in the present invention. In a television that detects a video signal and an audio signal from a composite video signal and performs a playback process accordingly, the audio signal check function is set by the control signal input unit (1). Based on the signals output from the speaker connection detecting means (10, 11, 12, 20), the connection state between the center speaker (C-SP) and the left and right surround speakers (SL / SR-SP) is judged and then the center speaker. The voice mode may be set to a surround mode corresponding to a connection state between the C-SP and the left / right surround speakers SL / SR-SP.

Description

How to control automatic audio mode setting on TV

The present invention relates to a method for controlling automatic voice mode setting in a television. More specifically, when the user sets the voice mode check function, the connection state of each speaker (central speaker, left / right surround speaker) is determined and then the connection state is determined. The present invention relates to a method for controlling automatic voice mode setting in a television, which enables automatic setting of a voice mode in the most suitable surround mode.

Televisions, which are prevalent in general homes, typically perform reproduction processing on broadcast signals received through antennas and reproduce them through CRT screens and speakers. In order to improve the sound field feeling of the stereoscopic sense, a surround function for the corresponding audio signal was required, and in response to such a demand, a television having a built-in surround function has been put into practical use.

On the other hand, in order to process the audio signal, the audio signal is processed through 5 channels of the surround speaker and the center speaker which are separately installed, and according to the processing method, the normal surround mode, the wide mode, the phantom ( It is divided into PHANTOM mode, 3-channel mode, and PANORAMA mode.

Here, the surround normal mode is a method in which all five channels are filtered to output an audio signal to an L speaker, an R speaker, a center speaker (C), an L surround speaker (SL), and an R surround speaker (SR). In the wide mode, all five channels are filtered and the frequency of the audio signal output to the center speaker is multiplied to L, R, C, L, and S surround speakers. In the phantom mode, only 4 channels of the 5 channels are filtered to output audio signals to L speakers, R speakers, L surround speakers (SL), and R surround speakers (SR), respectively. The channel mode filters only three of the five channels so that the audio signal is output to the L, R, and center speakers C, respectively, and reinforces the surround sound in the audio signal output to the L and R speakers. , remind Am to wear lifting filters only two channels of the channel 5 is a method of reinforcing the surround sound to a voice signal output to the L and R speakers, while speakers to output the audio signal to each speaker L, R speakers.

In the television adopting the 5-channel surround method, the center speaker (C-SP) and the left / right in addition to the L / R speaker built into the television in order to have the best sense of impression and stereoscopic output output on the speaker. The surround speakers (SL / SR-SP) must be externalized so that the sound you hear will have the best look and feel.

However, the audio surround mode, for example, surround normal mode / phantom mode /, in which audio signals are output through the center speaker or left / right surround speakers without the user connecting the center speaker or the left / right surround speakers to the television. When the 3-channel mode is set, the speaker to which the audio signal processed in the set surround method is output is not connected. Therefore, even though the user selects one of the surround mode, phantom mode, and 3-channel mode, The audio signal is output only through the built-in left / right speaker. At this time, the sound signal output to the left / right speaker is a non-surrounded voice signal. do.

Therefore, the user should set the surround method in consideration of the state that the external speaker (center speaker, left / right surround speaker) is connected to the corresponding TV in the speaker, but in order to do this, the user must set the audio output type for each surround method. Recognizing it was a hassle to manually set the surround method that corresponds to the speaker connection status.

Accordingly, the present invention has been made in view of the above circumstances, and when the voice mode check function is set, the connection state of an external speaker (central speaker, left / right surround speaker) is independently determined, and then the voice mode is connected to the connection state. It is an object of the present invention to provide a method for controlling automatic voice mode setting in a television which is capable of automatically setting to a corresponding surround mode in.

According to an embodiment of the present invention for realizing the above object, in a television which detects a video signal and an audio signal from a composite video signal and performs a reproduction process accordingly, an audio mode check function is set by a control signal input unit. If it is determined based on the signal output from the speaker connection detecting means, the connection state between the center speaker and the left and right surround speakers is determined, and the voice mode is set to the surround mode corresponding to the connection state between the center speaker and the left and right surround speakers. A method for controlling automatic voice mode setting in a television is provided.

According to the present invention made as described above, when the user sets the voice mode check function, the control unit 2 self-diagnoses the connection state of each speaker (central speaker, left / right surround speaker) and then in the connection state. By automatically setting the corresponding surround mode to the voice mode, it is possible to improve the sound field or three-dimensional effect of the sound output through the speaker.

1 is a block diagram of a television to which the present invention is applied;

2A and 2B are diagrams showing an example of the configuration of the speaker connection detecting units 10, 11 and 12 shown in FIG.

3 is a flowchart illustrating a method for controlling automatic voice mode setting in a television according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: control signal input unit 2: control unit

3: Channel data storage unit 4: OSD processing unit

5: Tuner 6: Voice IF Module

7: voice signal processing unit 8: Dolby processing unit

9: voice amplifier 10: C speaker connection detection unit

11: SL speaker connection detecting unit 12: SR speaker connection detecting unit

13: Speaker input terminal 14: Speaker output terminal

20: Andgate

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

1 is a block diagram of a television to which the present invention is applied, in which reference numeral 1 is generally composed of a control panel installed at the front of the television or a remote control for remotely controlling the television. As a control signal input unit for setting the overall function of the television, the control signal input unit 1 is connected to the center speaker (C-SP) or the left / right surround speaker (SL / SR-SP) in accordance with the present invention. And a voice mode check key 1a for setting a voice mode check function for automatically setting the surround mode corresponding to the state.

In addition, reference numeral 2 controls the entire apparatus such that the overall operation of the corresponding television, for example, tuning of a specific channel is performed or the volume level or screen adjustment state is adjusted based on the control signal input from the control signal input unit 1. As the control unit, in the present invention, the control unit 2 detects the connection state of each external speaker when the voice mode check function is set by the control signal input unit 1, and the surround mode is the most preferable surround mode. To automatically set the voice mode so that the voice signal of the broadcast signal applied to the voice signal processor 7 to be described later is processed in the voice mode.

In addition, reference numeral 3 is a channel data storage for storing channel data for tuning of a specific channel, and 5 is a plurality of broadcasts received through an antenna based on the tuning voltage VT applied from the controller 2. A tuner that tunes a specific channel among channels, and 6 performs an IF conversion process on a broadcast signal for a specific channel tuned through the tuner 5, and then detects only an audio signal from the IF converted broadcast signal. IF module.

Further, reference numeral 7 denotes a voice signal output from the voice IF module 6 under the control of the controller 2, such as volume control, voice surround or voice multiplexing, which is set by the control signal input unit 1. In the present invention, the voice signal processor 7 processes the voice signal output from the voice IF module 6 into 5-channels under the control of the controller 2, and processes the voice signal. Are processed in surround normal mode / wide mode / phantom mode / 3-channel mode / panorama mode respectively.

In addition, reference numeral 8 is a Dolby processor for removing noise components from the voice signal output from the voice signal processor 7, and 9 is a speaker SP for the voice signal output from the Dolby processor 8; A voice amplifier for amplifying the voice signal to a predetermined amplification so that it can be reproduced through the output.

Meanwhile, the rear end of the voice amplifier 9 includes a plurality of speakers, that is, left / right speakers (L / R-SP) and a center speaker (C-SP), and left / right surround speakers (SL / SR-SP). Is connected to reproduce the audio signal output from the audio amplifier 8, wherein the left / right speaker L / R-SP is a speaker embedded in the television, The center speaker (C-SP) and the left / right surround speaker (SL / SR-SP) is a speaker that is external (external) to the television, the speaker must be installed separately by the user.

In FIG. 1, reference numeral 10 denotes a C speaker connection detecting unit for detecting a connection state of the center speaker, 11 is an SL speaker connection detecting unit for detecting a connection state of the left surround speaker, and 12 is the right side. As an SR speaker connection detecting unit for detecting a connection state of a surround speaker, the SR speaker connection detecting unit 12 is a speaker input terminal 13 for the right surround speaker installed on the television side as shown in FIG. 2A. A switch is provided in the inner predetermined portion and is turned off when the speaker output terminal 14 from the right surround speaker is not inserted. As shown in FIG. 2B, the speaker output terminal 14 is inserted into the speaker input terminal. And the C speaker connection detecting unit 10 and the SL speaker connection detecting unit 11 are the SR speaker detecting unit 12 described above. It consists of the same configuration.

The connection detection signal output from the SL speaker connection detecting unit 11 and the SR speaker connection detecting unit 12 is subjected to an AND processing at the end gate 20 connected to the rear end thereof, and then applied to the control unit 2. In this case, the connection detection signal applied to the control unit 2 becomes a connection detection signal for a surround speaker.

Next, the general operation according to the audio processing of the television having the above configuration will be briefly described.

When a control signal for power-on and channel selection is input from the control signal input unit 1, the control unit 2 turns on the power of the television based on the control signal and is a channel to be tuned to. When the preset voltage VT corresponding to the readout is read by the channel data storage unit 3 and the corresponding tuner voltage VT is applied to the tuner 5, the tuner 5 is identified by the tuner voltage VT. Perform channel tuning for the channel.

Subsequently, when the tuner 5 applies the broadcast signal for the selected channel to the voice IF module 6, the voice IF module 6 performs IF conversion processing on the corresponding broadcast signal, and then in the IF converted broadcast signal. Only the voice signal is detected and applied to the voice signal processor 7 connected to the means, and the voice signal processor 7 is set through the control signal input unit 1 for the voice signal under the control of the controller 2. After performing the voice processing according to the volume level or the voice multiplexing process, the voice signal is applied to the Dolby processor 8 to remove the noise component and then to the voice amplifier 9 connected to the subsequent stage. Subsequently, the voice amplifier 9 amplifies the voice signal from the voice signal processor 8 with a predetermined amplification and applies it to the speaker SP connected to the rear stage. The signal is output.

In addition, the image signal for the tuned channel in the tuner 5 is IF converted by an image IF module (not shown) and then applied to an image signal processor (not shown), and the image signal processor is applied to the corresponding video signal. After the image processing is performed, the image signal is amplified with a predetermined amplification by the image amplifier (not shown) and then reproduced through the CRT apparatus.

Hereinafter, a method for controlling automatic voice mode setting in a television according to an embodiment of the present invention will be described in detail with reference to the flowchart shown in FIG. 3.

First, when a user operates the voice mode check key 1a configured in the control signal input unit 1 to set the voice mode check function in the control unit 2 (step 40), the control unit 2 performs the C speaker. It is determined whether the central speaker C-SP is connected based on the detection signal applied from the connection detecting unit 10 (step 42).

Here, when the speaker output terminal of the center speaker (C-SP) is connected through the speaker input terminal of the center speaker and the switch installed on the inner predetermined portion of the speaker input terminal is turned on, the 'C speaker connection detecting unit 10' A connection detection signal having a high 'level is output, and the control unit 2 receiving the connection detection signal proceeds to step 44 in accordance with the determination result (YES) in step 42 and surround speakers SL / SR-SP. ) Is connected.

As a result of the determination, the speaker output terminal of the left / right surround speaker is connected to the speaker input terminal of the left / right surround speaker so that the SL speaker connection detecting unit 11 has a 'high' level connection detection signal for the right surround speaker. When the 'high' level signal is output from the AND gate 20 in response to the 'high' level connection detection signal being applied to the left surround speaker from the SR speaker connection detecting unit 12, the controller 2 ) Proceeds to step 46 according to the determination result (YES) in step 44, and the voice mode (i.e., surround normal method, wide method, phantom method, three channel method, or panorama method) that has been preset by the user. Mode, a predetermined control signal is applied to the voice signal processor 7 so as to process the voice signal. Accordingly, the voice signal processor 7 processes the voice signal output from the voice IF module 6 in a specific surround method and applies it to the Dolby processor 8 to reproduce the voice signal corresponding to the surround method through the speaker. Is output.

Meanwhile, at least one of the left and right surround speakers in step 44 is not connected to the surround input terminal, so at least one of the SL speaker connection detecting unit 11 or the SR speaker connection detecting unit 12 is used. When at least one 'low' level signal is output, the AND gate 20 outputs a 'low' level signal, and the control unit 2 is not connected to the surround speaker based on the 'low' level signal. Detects the state and proceeds to step 48 according to the determination result (NO) in step 44, and sets the 3-channel mode (3-CHNNEL MODE), which is the most preferable surround mode when the surround speakers are not connected, to the voice mode. Next, a predetermined control signal is applied to the voice signal processor 7 so that the voice signal output from the IF module 6 is processed in the three-channel mode so that the left / right speaker S / R-SP is connected to the voice signal processor 7. Through the center speaker (C-SP) so that the reproduction power.

Here, if it is detected that the surround speaker is not connected (NO in step 44), the control unit 2 sets the audio mode in a panoramic manner, which is a preferable surround mode without a surround speaker connected, and then the voice signal. A predetermined control signal may be applied to the processing unit 7 so that the audio signal output to the IF module 6 may be processed in the panoramic manner and reproduced through the left / right speaker L / R-SP.

On the other hand, if the connection detection signal of the 'low' level is applied from the C speaker connection detecting unit 10 in step 42 and the control unit 2 detects the state that the center speaker (C-SP) is not connected to the control unit (2), the flow advances to step 52 in accordance with the determination result NO in step 42 to determine whether the surround speakers SL / SR-SP are connected.

In this case, when the left / right surround speakers SL / SR-SP are normally connected in step 52 and a connection detection signal having a 'high' level is applied from the AND gate 20 to the controller 2, the controller 2 ) Proceeds to step 54 according to the determination result (YES) in step 52, the center speaker (C-SP) is not connected to the left / right surround speaker (SL / SR-SP) is connected most After setting a phantom mode, which is a preferable surround mode, to a voice mode, a predetermined control signal is applied to the voice signal processing unit 7 so that the voice signal output from the voice IF module 6 is transferred to the phantom mode. Processing is performed to output through the left / right speaker L / R-SP and the left / right surround speaker SL / SR-SP (step 56).

On the contrary, when the left / right surround speaker is not connected in step 52, when the 'low' level connection detection signal output from the AND gate 20 is applied to the controller 2, the controller 2 According to the determination result NO in step 52, the process proceeds to step 58, where the center speaker C-SP and the left / right surround speakers SL / SR-SP are not connected to the most preferable surround mode. After setting the PANORAMA MODE to the voice mode, a predetermined control signal is applied to the voice signal processing unit 7 so that the voice signal output from the voice IF module 6 is processed in the panorama mode. Output via the left / right speakers L / R-SP (step 56).

Therefore, according to an embodiment of the present invention, when the user sets the voice mode check function, the voice IF module 6 is automatically set as the most preferable surround mode is automatically set while the speaker is connected based on the connection state of each speaker. The audio signal outputted from is processed in the automatically set surround mode and output through each speaker, so that the sound output through the speaker is in an optimum state, so that the sense of presence or vibration of the sound can be maintained in the best state.

As described above, according to the automatic audio mode setting control method of the television according to an embodiment of the present invention, the speaker is connected even if the user does not determine the connection state of the speaker and sets the appropriate surround mode for the connection state. As the voice mode is set as the surround mode corresponding to the current state, the user can conveniently set the voice mode and can always listen to the sound having good sound quality.

Claims (6)

In a television that detects a video signal and an audio signal from a composite video signal and performs playback processing accordingly, the speaker connection detecting means (10, 11, 12, 20) when the audio mode check function is set by the control signal input unit (1). On the basis of the signal output from the C-SP and the left and right surround speakers (SL / SR-SP), it is judged that the connection state of the center speaker (C-SP) and the center speaker (C-SP) and the left and right surround speakers. And a voice mode is set in the surround mode corresponding to the connection state of the SL / SR-SP. The method of claim 1, wherein the voice signal of the broadcast signal is processed in a preset mode when the center speaker (C-SP) and the left / right surround speaker (SL / SR-SP) are connected at the same time. A method for controlling automatic audio mode setting on a television. According to claim 1, If the central speaker (C-SP) is connected and the left / right surround speaker (SL / SR-SP) of the connected state, the voice mode is set to 3-channel mode and the broadcast A method for controlling automatic voice mode setting in a television, characterized by processing a voice signal for a signal in the three-channel mode. According to claim 1, If the center speaker (C-SP) is connected and the left / right surround speaker (SL / SR-SP) is not connected to the voice mode is set to the panorama mode and the broadcast signal The automatic voice mode setting control method for a television, characterized in that for processing the audio signal in the panorama mode. According to claim 1, If the center speaker (C-SP) is not connected to the left / right surround speaker (SL / SR-SP) is connected to set the voice mode to the phantom mode and to the broadcast signal And a voice signal for processing in the phantom mode. According to claim 1, If the center speaker (C-SP) and the left / right surround speaker (SL / SR-SP) is not connected at the same time, the voice mode is set to the panorama mode and the broadcast signal of the And a sound signal is processed in the panoramic mode.