KR101260941B1 - Receiving apparatus and method for providing sound effect based on genre information of content in digital multimedia broadcasting system - Google Patents

Abstract

The present invention relates to a receiving apparatus and method for providing a sound effect according to genre information of contents in a digital multimedia broadcasting (DMB) system. A reception method for providing a sound effect in a digital multimedia broadcasting system providing a service by receiving broadcast data including content from a broadcast channel according to the present invention comprises: genre information of content in a channel information field of the received broadcast data. Analyzing the extracted channel information, determining whether the user has initially set the sound effect mode based on the extracted genre information, determining, if the sound effect mode is set, a user setting mode, and Selecting and processing at least one sound effect based on a user setting in the setting mode; and selecting and processing at least one sound effect based on the extracted genre information when the user setting mode is not included. And mixes the sound effect processed audio signal and the received broadcast data. And it comprises the step of reproducing the content.

Accordingly, the present invention enables a high quality multimedia DMB broadcasting service through at least one sound effect according to the received data of the digital multimedia broadcasting in the mobile terminal, and automatically applies a sound effect for each broadcast data received using the DMB channel information or UI. User selection can be applied through.

DMB, Content, Sound Effect, Sound Effect Selector

Description

RECEIVING APPARATUS AND METHOD FOR PROVIDING SOUND EFFECT BASED ON GENRE INFORMATION OF CONTENT IN DIGITAL MULTIMEDIA BROADCASTING SYSTEM}

1 is a block diagram illustrating a receiver for providing a sound effect according to a genre of content in a DMB system according to an embodiment of the present invention;

2 is a flow chart for providing a sound effect according to the genre of content in a DMB system according to an embodiment of the present invention;

3 is a diagram illustrating an example of broadcast data including genre information in a DMB system according to an embodiment of the present invention.

The present invention relates to a receiving apparatus and method for providing an additional function in a digital multimedia broadcasting (DMB ") system, and more particularly, to a receiving apparatus for providing a sound effect according to genre information of a content in a DMB system; It is about a method.

The mobile communication system is a system developed to secure data of a terminal and to transmit data to the user free from location and distance constraints. Therefore, the mobile communication system provides the convenience that the communication is possible at any time and any place by the user's needs.

The convenience has exploded the number of subscribers of mobile communication services, and most people now own one or more mobile terminals. As the popularity of mobile terminals becomes popular, the functions of the mobile terminals are diversified, and as the complexity of the mobile terminals becomes more complicated, their performances are gradually developed.

With the development of such performance, the mobile terminal has developed the DMB system and the broadcasting communication convergence era has begun. The DMB system is capable of mobile reception and interactive communication with multimedia services such as video, audio, and data broadcasting. In addition, the DMB system provides sound quality and data services such as compact disks (CDs), and is applied to PDAs, personal digital assistants (PDAs), vehicle terminals, and various electronic products. However, due to the miniaturization of the DMB device itself in mobile communication that emphasizes mobility and personality, there is a problem of less presence feeling and low concentration due to broadcasting through a 2 to 7 inch screen terminal.

On the other hand, DMB system is a system that provides a variety of content in a large category such as movies / dramas, shopping, music, news, sports. At present, the produced content is transmitted through the DMB network and has only a function of being reproduced in a user's device, and a specialized sound effect processing for each content is not performed. In other words, with the evolution of personal mobile devices such as mobile phones, PDAs, MP3 players, and portable multimedia players (PMPs), various multimedia functions are integrated into one device, and multimedia home appliances such as 5.1-channel home theater and HDTV (High Digital Television) are also included. While the demand for high quality services is increasing as the user develops rapidly, the DMB system has not been able to implement services that meet the user's eye level.

As described above, in the conventional DMB system, the receiving device is capable of simply reproducing content, thereby providing a more realistic and realistic broadcast to users. In addition, there is a need for a solution to the limitation of audio quality and the finiteness of content production caused by the miniaturization of a DMB receiver.

The present invention provides a receiving apparatus and method for providing a sound effect according to the genre of content in a DMB system.

The present invention also provides a receiving apparatus and method for solving the limitations of audio quality and the finiteness of content production caused by the miniaturization of DMB devices in a DMB system.

In a digital multimedia broadcasting system providing a service by receiving broadcast data including content from a broadcast channel according to the present invention, a receiving apparatus for providing sound effects may include genre information of content in a channel information field of the received broadcast data. It is determined whether the user has initially set the sound effect mode based on the extracted channel information analyzer and the extracted genre information, and when the sound effect mode is set, it is determined whether the user setting mode is selected. Control the operation of the sound effect processing unit so that at least one sound effect is selected and processed based on a setting, and if not in the user setting mode, at least one sound effect is selected and processed based on the extracted genre information. A controller for controlling the operation of the effect processor; The sound effect processor for processing at least one sound effect selected based on the user setting or the extracted genre information under control of a fisherman, the audio signal processed by the sound effect processor in the sound effect processor, and the received broadcast data. And a content playback unit for mixing the content and playing the content.

In addition, the reception method for providing a sound effect in a digital multimedia broadcasting system providing a service by receiving broadcast data containing content from a broadcast channel according to the present invention, genre information of the content in the channel information field of the received broadcast data A channel information analysis process of extracting a signal, a process of determining whether a user initially sets a sound effect mode based on the extracted genre information, a process of determining whether a user setting mode is set when the sound effect mode is set, and Selecting and processing at least one sound effect based on a user setting in the user setting mode; and selecting and processing at least one sound effect based on the extracted genre information when the user setting mode is not included. And the sound effect processed audio signal and the received broadcast data. It comprises the step of mixing and reproducing the content.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

First, the DMB receiving apparatus according to an embodiment of the present invention receives broadcast data including content from a DMB channel, and then the channel information analyzer extracts genre information of the content based on the received broadcast data. In addition, the present invention selects a sound effect corresponding to each genre based on the genre information of the extracted content. Accordingly, the present invention can provide a sound effect according to the genre of content in a digital multimedia broadcasting system.

Hereinafter, a receiving apparatus and method for providing a sound effect according to a genre of content in a DMB system according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a receiver for providing a sound effect according to a genre of content in a DMB system according to an exemplary embodiment of the present invention.

The broadcast data receiver 110 according to an embodiment of the present invention receives broadcast data including content from the DMB channel 100. In addition, the broadcast data includes content data and genre information of the corresponding content. Hereinafter, the genre information will be described in more detail with reference to FIG. 3.

3 is a diagram illustrating an example of broadcast data including genre information in a DMB system according to an embodiment of the present invention.

Looking at the channel information field included in the conventional broadcasting data, the program information includes a large category such as video / audio broadcasting, news / weather / transportation / securities in the PAD / NPAD (Program Associated Data / Non-Program Associated Data) field, Detailed program information is displayed in the (Electronic Program Guide), but detailed category information related to the corresponding content, that is, information about a specific genre, is not displayed in a field.

Meanwhile, the channel information field CH according to an embodiment of the present invention includes a PAD / NPAD field 301 including the large category information and a genre information field 303 including the detailed category information. The genre information field 303 may include, for example, detailed category information that may be allocated to about 4 bits to distinguish content such as whether the genre of broadcast data received by the broadcast data receiver 110 is a movie or a drama. Therefore, according to the present invention, since the detailed category of the content can be checked through the genre information field 303, it is possible to select a sound effect more appropriate when the content is played back.

Referring to FIG. 1 again, referring to FIG. 1, the channel information analyzer 130 extracts genre information of content from the received broadcast data, and the extracted genre information is transmitted to the controller 150. . In the present invention, the sound effect is selected based on the genre information, but contents classified into large categories, such as news, may be selected by using only the category information.

The controller 150 controls the operation of the sound effect processor 170 to select a sound effect corresponding to the corresponding content based on the genre information.

In the embodiment of the present invention, the sound effect may be selected in two modes. The first mode is an automatic setting mode for controlling a preset sound effect according to each genre information based on genre information confirmed from channel information of broadcast data. The second mode is a user setting mode in which genre information identified from channel information of broadcast data is displayed to the user and the user selects a desired sound effect according to a key input. In the case of the user setting mode, it is desirable to display a sound effect suitable for the corresponding genre information.

The key input unit 151 provides a user interface for basic operation of the terminal, whether to set the sound effect, set the mode of the sound effect, or select the sound effect. The setting of the setting of the sound effect through the key input unit 151 is for determining whether to use the sound effect for the reproduced content. The mode setting of the sound effect is for setting a desired mode among the automatic mode setting and the user setting mode. In addition, in the embodiment of the present invention, when the user selects and inputs a desired sound effect, the user may select and input at least one sound effect in the user setting mode.

The display unit 153 may be formed of a liquid crystal display (LCD) or the like, and displays various operation states of the terminal on the screen. In addition, the display unit 153 may display a setting menu screen of the terminal, a sound effect suitable for genre information, a set sound effect, and the like. The display unit may or may not be used as required by the mobile terminal user.

In FIG. 1, the sound effect processor 170 performs a sound effect process selected by the sound effect selector 171 and a sound effect selector 171 to select a sound effect according to genre information under the control of the controller 110. The sound effect unit 173 is included. The sound effect selector 171 selects at least one sound effect input from the key input unit 151 in the sound effect unit 173 under the control of the controller 110.

In addition, the sound effect unit 173 includes sound effect filters for filtering input broadcast data to perform sound effect processing according to genre information of content. That is, the sound effect unit 173 includes an EQ (Equalizer) 173 ₁ , a Hall Effect 173 ₂ , a 3D sound 173 ₃ , a Voice Enhancement 173 ₄ , a stadium effect ( and having Stadium Effect) a plurality of filters for filtering an audio signal of the broadcast data input to indicate (173 _5). In addition, blocks representing other sound effects can be added or subtracted. Also, the sound effect unit 173 may include a state in which no sound effect is reproduced in broadcast data (No Effect) 173 _N when a key input by a user does not set the sound effect mode. The content player 190 reproduces the content by mixing the audio signal processed by the sound effect unit 173 and the broadcast data received by the broadcast data receiver 110.

Meanwhile, an example in which the sound effect is processed when at least one sound effect according to the genre of the content is selected in the DMB system according to the embodiment of FIG. 1 will be described below.

The broadcast data received from the DMB channel 100 includes information of several channels. For example, it may be divided into channels such as movies, news, dramas, sports, shopping, and music. If the channel of the input broadcast data is a sport through the channel information analyzer 130, the stadium effect 173 ₅ is selected by the sound effect processing unit 170 to provide a realistic service, and the channel information of the broadcast data is In the case of news, the voice boost (173 ₄ ) is selected to emphasize the voice band (below 4kHz) to obtain clear and clear voice information.

In the case of music broadcasting and music, EQ (173 ₁ ) or Hall effect (173 ₂ ), 3D sound (173 ₃ ), etc. can be processed and outputted, or the GUI (Graphic User Interface) is displayed on the screen where the user is broadcasting. Make it possible. In the case of shopping is to emphasize the unique characteristics of the shop via the voice channel increase (173 ₄₎ process.

In addition, when the input content is a movie or drama, speech and audio effects are processed when speech is determined to be audio using speech and an audio detection algorithm, and when speech is judged, speech enhancement processing is performed. In particular, when watching a movie, the audio and speech sections may be simultaneously provided with 3D sound effects to provide realistic and realistic service by adding perspective or realism.

It is also possible to apply 5.1-channel when watching a movie. If the content is 2-channel, up-mixing can be performed to 5.1-channel to enhance the sense of presence, and even if the content is 5.1-channel, it can be down-mixed to 2-channel.

On the other hand, there are a number of methods for discriminating speech and audio in speech and audio detection algorithms. The fractionation method judges speech when the signal energy is concentrated within 4 kHz or when the overall energy distribution changes. In addition, if a certain amount of energy is continuously maintained, audio is judged, and speech / audio can be judged based on the presence or absence of pitch information. In addition, in the case of content where voice and music coexist, such as a movie, drama, or game broadcast, speech and audio playback sections are distinguished by using speech and an audio detection algorithm. You can also give.

Therefore, when speech and audio sections are distinguished through speech and audio detection algorithms, the 3D mentioned above is used to give a voice augmentation effect for clarity of speech in the speech section, and to give a grandeur and presence in the audio section. Sound, Hall effect, 5.1-channel effects can be given. If you have a mix of voice and audio, you can select Bypass or apply the effects you've processed to each of the voice and audio sections simultaneously. For example, let's handle the voice boost and 3D sound effects together. The effects applied in the audio effect processor may be used in any way. Currently, the filter is mainly used to give a sound effect. In this case, the type, order and effect of the filter are not limited. For example, in the case of augmentation, a filter that emphasizes a portion of the voice band is used, or an EQ that adjusts the gain for each band is typical.

Therefore, the present invention enables a high quality multimedia DMB broadcasting service through various sound effects.

FIG. 2 is a flowchart illustrating a sound effect according to a genre of content in a DMB system according to an embodiment of the present invention. Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 3. In step 201 according to an embodiment of the present invention, the broadcast data receiving unit 110 receives broadcast data including content from the DMB channel 100 and transmits the broadcast data in step 203. In operation 201, the broadcast data includes content data and genre information of the corresponding content. In step 203, the channel information analyzer 130 extracts genre information (eg, drama, sports, shopping, etc.) of the content from the broadcast data received in step 201, and genre information extracted by the controller 150. Is sent to step 207. In addition, in the present invention, the sound effect is selected based on the genre information, but content classified into a large category such as news may be transmitted only in step 207.

In step 207, it is determined whether the user initially inputs the sound effect mode setting. If the sound effect mode is not set in step 207, the controller 150 plays the original sound of the received broadcast data. If the sound effect mode is set, the controller 150 proceeds to step 209 to determine whether the controller 150 is a user setting mode. .

If the user setting mode is set in the sound effect mode in step 209, the controller 150 displays the sound effect mode on the display unit 153 of the terminal in step 213, and then at least one sound effect desired by the user in step 215. Receive key input In addition, in step 217, the controller 150 controls the sound effect selector 171 to select a sound effect corresponding to the sound effect mode key input in step 215. Therefore, in operation 217, the sound effect selector 171 controlled by the controller 150 selects at least one sound effect from the sound effect unit 173 by the user's selection input from the key input unit 151.

If the user setting mode is not set in step 209, in step 211, the controller 150 selects at least one sound effect preset for each genre information based on the genre information analyzed in step 205. Select automatically from). In addition, the terminal mixes the audio signal added with the sound effect selected in step 217 or 211 with the content to be reproduced to provide the user with the sound effect processed content.

Therefore, the present invention can automatically apply the sound effect according to the received broadcast data using the DMB channel information or apply a user selection through a user interface (hereinafter referred to as "UI").

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

The present invention provides a high-quality multimedia DMB broadcasting service through at least one sound effect according to the received data of the digital multimedia broadcasting in the mobile terminal, and automatically applies sound effects for each broadcasting data received by using the DMB channel information or UI. User selection can be applied.

Claims (8)

A receiving apparatus for providing sound effects in a digital multimedia broadcasting system providing a service by receiving broadcast data including contents from a broadcasting channel, A channel information analyzer for extracting genre information of contents from the channel information field of the received broadcast data; It is determined whether the user has initially set the sound effect mode based on the extracted genre information, and if the sound effect mode is set, it is determined whether it is a user setting mode, and in the case of the user setting mode, at least one Controlling an operation of the sound effect processor to select and process a sound effect; and controlling an operation of the sound effect processor to select and process at least one sound effect based on the extracted genre information when the user is not in the user setting mode. With the control unit, The sound effect processor configured to process at least one sound effect selected based on the user setting or the extracted genre information under the control of the controller; And a content reproduction unit for reproducing the content by mixing the audio signal processed by the sound effect processing unit with the received broadcast data and receiving the sound effect according to the genre of the content. The method of claim 1, The sound effect processing unit A sound effect selector for selecting the at least one sound effect based on the extracted genre information under control of the controller; And a sound effect unit including filters for filtering the received broadcast data so that the at least one sound effect is processed. The method of claim 1, And a key input unit configured to receive a use of a sound effect and a sound effect mode from a user. The method of claim 1, And a display unit for displaying at least one of a setting menu screen of the terminal, a sound effect corresponding to the genre information, and a set sound effect. A reception method for providing sound effects in a digital multimedia broadcasting system providing a service by receiving broadcast data including contents from a broadcast channel, A channel information analysis process of extracting genre information of contents from the channel information field of the received broadcast data; Determining whether the user initially set the sound effect mode based on the extracted genre information; When the sound effect mode is set, determining whether a user setting mode is provided; In the user setting mode, selecting and processing at least one sound effect based on a user setting; If not in the user setting mode, selecting and processing at least one sound effect based on the extracted genre information; And reproducing the content by mixing the sound effect-processed audio signal with the received broadcast data. delete 6. The method of claim 5, And reproducing the received broadcast data as an original sound when the sound effect mode is not set in the determination process. The method of claim 5, wherein the selecting and processing the at least one sound effect in the user setting mode comprises: Displaying a sound effect mode selectable by the user; Receiving at least one desired sound effect mode in the sound effect mode selectable by the user from the user; And receiving a sound effect according to the genre of content, further comprising: processing the input sound effect mode.

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