KR100770888B1 - Method for informing manner zone in dmb terminal - Google Patents

Abstract

A manner area notification method in a DMB(Digital Multimedia Broadcasting) terminal is provided to remove the noises due to DMB watching in public places, such as subways, theaters, and libraries, by displaying a notification message to announce that the present location is a public place, in case that a user, who is watching on a DMB program through a DMB receiver, enters the public place. A control part checks whether a DMB super frame is received through a DMB receiving part(402). If a DMB super frame is received, the control part extracts a gap filler from the received DMB super frame(404). Then the control part confirms whether the extracted gap filler exists in a public place gap filler ID table stored in a memory part(406). If so, the control part judges whether the present RSSI(Received Signal Strength Indication) is within a reference range(408). In case the present RSSI is within the reference range, the control part displays a notification message to announce that the present location is a public place(410).

Description

How to notify your local manners from your DMB terminal {METHOD FOR INFORMING MANNER ZONE IN DMB TERMINAL}

1 is an exemplary view showing a conventional DMB system according to the prior art;

2 is a block diagram of a DMB terminal according to an embodiment of the present invention;

3 is an exemplary diagram illustrating a super frame received by a DMB terminal according to an embodiment of the present invention;

4 is a control flowchart illustrating a process for displaying a notification message for notifying that a public place by using a capfiller ID according to an embodiment of the present invention;

5 is an exemplary view showing a public space gap filler ID table according to an embodiment of the present invention.

The present invention relates to a method for providing information to a user in a DMB terminal, and more particularly, to a method for notifying a user of information according to the location of the DMB terminal.

In general, the satellite broadcasting service provides a broadcasting service using a broadcasting satellite or a communication satellite on a geostationary track. The advantage of these satellite broadcasting services is that they can provide broadcasting services to a wide range of areas without the need for a large-scale infrastructure, including broadcast facilities on the ground. Recently, the research and development of digital satellite broadcasting system has been actively progressed away from the analogue satellite broadcasting system.

As described above, due to the remarkable development of the current satellite technology, satellites are used to provide broadcast services to a wide range of areas without the need for large-scale infrastructure on the ground. However, under some conditions, such as building congestion, there are some areas where direct reception from satellites is difficult due to attenuation of the signal due to shadowing or blocking. In areas where satellite signals cannot be directly received, gap fillers 114 and 116, which are auxiliary relay facilities, are used. The gap fillers 114 and 116 are classified into a direct amplifying gapfiller 114 and a frequency conversion gapfiller 116.

The above-described direct amplified gap filler 114 performs a function of simply amplifying and relaying a broadcast signal of 2.6 GHz band received from a satellite. The direct amplified gap filler 114 of this type is a signal between a transmitting antenna and a receiving antenna. It is limited to low gain amplifiers to avoid unwanted oscillations caused by coupling. In addition, the direct amplified gap filler 114 may cover an area of 500 m radius. On the other hand, the frequency-converting gap filler 116 receives an 11 GHz band broadcast signal from a satellite, converts it to a frequency of 2.6 GHz band, and transmits the signal.

The prior art as described above allows viewing of DMB regardless of time and place. Meanwhile, the user of the DMB terminal may change the setting to the silent mode or use the earphone as needed during DMB viewing. However, when a user who is watching DMB through a DMB terminal is immersed in watching a broadcast, it may be excessive to use manner mode or earphones when entering a public place such as a subway, a movie theater, or a library. This causes inconvenience to people around by noise.

Accordingly, the present invention provides a method for recognizing a current location of a DMB terminal when the location corresponds to a public place and informing the user that the current location is a public place.

The present invention for achieving the above object in the method for informing the user of the information according to the location of the DMB terminal in the DMB terminal,

If a super frame is received through a pilot channel in a DMB reception mode, extracting a gap filler ID from the received super frame and checking whether the extracted gap filler ID exists in a previously stored public space gap filler ID table, and extracting the gap filler ID. Is present in the prestored public space gap filler ID table, checking whether the current signal strength falls within a reference range for checking whether the public space exists; and if the current signal strength falls within a reference range for checking whether the public space exists, the public space And displaying a notification message informing that it is.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

The present invention provides a method for recognizing a location of a DMB terminal corresponding to a public place and informing a user that the current location is a public place.

Next, the DMB terminal will be described with reference to FIG. 2. 2 is a block diagram of a DMB terminal according to an embodiment of the present invention.

Referring to FIG. 2, the controller 200 functions to process and control common functions such as a phone call and data communication. In particular, in the present invention, the controller 200 extracts a gap filler ID from the super frame input through the DMB receiver 204 and checks whether the extracted gap filler ID exists in the public space gap filler ID table stored in the memory unit 206. In addition, the controller 200 checks whether the current DMB signal strength inputted through the DMB receiver 204 is within a reference range for checking whether a public place is present. At this time, the reference range for checking whether the public place is a signal strength range including the DMB signal strength value and ± error degree stored in the RSSI field corresponding to the public space gap filler ID as shown in FIG. For example, if the DMB signal strength value stored in the RSSI field corresponding to the public place gap filler ID is -84 and the error degree is ± 5, the reference range for checking whether the public place is -89 to -79 is. In addition, in the present invention, the control unit 200 checks whether the current signal strength is included in the reference range for checking whether the public place, and if included, controls the display unit 210 to display a notification message indicating that the public place. . A detailed description of the function of the controller 200 will be described in detail below with reference to FIG. 4.

The mobile communication unit 202 is composed of a radio frequency (RF) module and a baseband processing module. The RF module transmits and receives a radio signal to and from a mobile communication base station through an antenna. The RF module modulates a signal to be transmitted from the control unit 200 through a baseband module and transmits an RF signal through the antenna. It demodulates the RF signal received through the baseband module and provides it to the control unit 200. The baseband processing module processes baseband signals transmitted and received between the RF module and the control unit 200.

The DMB receiving unit 204 wirelessly receives the DMB signal of the designated broadcast channel, decodes it, and delivers it to the control unit 200. In particular, the DMB receiver 204 according to the present invention receives a super frame input through a pilot channel and provides it to the controller 200.

The memory unit 206 stores various updateable storage data such as programs, reference data, and phone number information for processing and control of the controller 200, and is provided as a working memory of the controller 200. In particular, the memory unit 200 according to the present invention stores a public place gap filler ID table including a name of a public place where a gap filler is installed, a gap filler ID, a received signal strength indication (RSSI) bit error rate (BER). In this case, the public place gap filler ID table may be illustrated in FIG. 5.

The key input unit 208 corresponds to menus, selections, calls, erases, power / shutdowns, volumes (0, 9), *, # keys, and various functions of the corresponding mobile communication terminal. It is provided with a plurality of function keys, such as adjusting the volume and provides the control unit 200 with key input data corresponding to the key pressed by the user.

The voice processing unit 212 processes a voice signal input or output to the mobile communication terminal for phone calls, voice recording, voice output, and the like. In particular, the voice processing unit 212 according to the present invention outputs the voice according to the DMB broadcast reception.

The display unit 210 displays various image information and images stored in the reception or memory unit 206 on the screen under the control of the controller 200. In addition, the display unit 210 according to the present invention displays an image according to the reception of the DMB broadcast.

Next, the super frame structure received through the pilot channel in the DMB terminal configured as shown in FIG. 2 will now be described with reference to FIG. 3.

Referring to FIG. 3, a pilot symbol (PS) and control data are alternately present in a super frame received through a pilot channel, and one pilot channel frame 302 has 51 pilot symbols and 51 controls. Composed of data, one frame totals 12.75msec. The six frames are combined to form one super frame 300, and the length of the super frame 300 is 76.5 msec. Here, the first control data D1 306 is filled with a unique word for frame synchronization, and the second control data D2 308 is filled with a frame counter for super frame synchronization. In the above-described super frame 300, each gap filler ID may be given using any control data among the remaining control data D3 ˜ D51 except for the reserved D1 306 and D2 308. If the control data D3 310 is to be used as a data symbol representing the gap filler ID, the D3 310 symbol is left empty when transmitting data from the earth station transmitter to the broadcast satellite. In addition, a convolutional code for error correction is not applied to the D3 310 symbol. Likewise, the D3 310 symbol is empty when transmitting data from the broadcast satellite to the ground. Thereafter, the gap filler inputs the gap filler ID assigned to the D3 310 symbol of the superframe received through the pilot channel from the broadcast satellite and transmits the gap filler.

Then, when the DMB terminal receives the super frame configured as shown in FIG. 3, the signal strength corresponding to the capillary ID included in the received super frame is included in the reference range for checking whether the public space is public. A process for notifying that the place will be described with reference to FIG. 4.

4, it is assumed in step 400 that the controller 200 performs the DMB reception mode according to the user's selection of the DMB reception mode. Thereafter, in step 402, the controller 200 determines whether a super frame is received through the DMB receiver 204, and when the super frame is received, the controller 200 proceeds to step 404 to extract a gap filler ID from the received super frame. If the super frame is not received through the DMB receiving unit 204 as a result of step 402, the controller 200 proceeds to step 400 to perform the DMB receiving mode. On the other hand, the control unit 200 proceeds from step 404 to step 406 checks whether the extracted gap filler ID exists in the public space gap filler ID table stored in the memory unit 206. If the extracted gap filler ID exists in the public place gap filler ID table, the control unit 200 proceeds to step 408 and checks whether the current signal strength falls within a reference range for checking whether the public place exists. If the current signal strength is within the reference range for checking whether the public place, the control unit 200 proceeds to step 410 to display a notification message indicating that the current location is a public place. If the gap filler ID extracted as a result of step 406 does not exist in the public place gap filler ID table, the control unit 200 proceeds to step 400 to execute the DMB reception mode. In operation 408, if the current signal strength does not fall within a reference range for checking whether a public place is present, the controller 200 proceeds to step 400 to perform the DMB reception mode. Thereafter, the controller 200 proceeds from step 410 to terminate the message display when the confirmation key is input through the key input unit 208.

In the embodiment of FIG. 4, when the confirmation key is input when the message indicating the public place is input in step 412, the display of the notification message indicating the public place is terminated. However, when the confirmation key is input when the notification message indicating that the public place is displayed, the control mode may be automatically switched to the silent mode. For example, if the gap filler ID extracted from the super frame received by the DMB terminal is present in the public place gap filler ID table, if the currently received DMB signal strength is within the reference range for checking whether the public place is "the current location is a public place" It will automatically switch to silent mode upon entering the confirmation key. " Display a notification message and automatically switch the operation mode to silent mode. In addition, when the confirmation key is input from the user after displaying the notification message of the automatic conversion to public places and silent mode, "Switched to silent mode." A message is displayed to inform the user that the current mode has been changed to silent mode.

For example, referring to FIG. 5, when the DMB terminal receives a super frame in the Samsung station, the control unit 200 receives a gap filler ID from the super frame received through the pilot channel from the gap filler installed in the Samsung station. Extract Thereafter, the controller 200 checks whether the extracted gap filler ID 124 exists in the public space gap filler ID table stored in the terminal. Since there is a gap filler ID 124 as a result of the test, a reference range for checking whether a public place is -79 to -89 using -84, which is an RSSI value corresponding to the gap filler ID 124, and ± 5, which is an error value assumed to explain the present invention, is determined. Calculate Thereafter, the controller 200 measures the signal strength at the Samsung station. For the purpose of explanation, assuming that the signal strength at the current Samsung station is -82, the control unit 200 includes a notification message indicating that the current location is a public place since the current signal strength is included within a reference range for checking whether the public place is public. The display unit 210 displays the display unit 210. Thereafter, when the confirmation key is input from the user, the controller 200 ends the message display. The notification message reminding you that this is a public place is "Your current location is a public place. Please switch to silent mode." Or, you might see something like "Your current location is a public place. Use your earphones."

As described above, in the present invention, if the gap filler ID extracted from the super frame received by the DMB terminal is present in the public space gap filler ID table, the present invention indicates that the public space is included if the currently received DMB signal strength falls within a reference range for checking whether the public space is present. Display a notification message to inform you.

As described above, the present invention displays a message indicating that the current location is a public place when a user watching a broadcast using a DMB receiver enters a public place such as a subway, a movie theater, a library, and the like. Noise can be removed.

Claims (4)

In a method of informing a user of information according to the location of a DMB terminal in a digital multimedia broadcasting (DMB) terminal, If a super frame is received through a pilot channel in the DMB reception mode, extracting a gap filler ID from the received super frame and checking whether the extracted gap filler ID exists in a previously stored public space gap filler ID table;  If the extracted gap filler ID exists in a previously stored public place gap filler ID table, checking whether the current signal strength falls within a reference range for checking whether a public place exists; If the current signal strength is within the reference range for checking whether the public place public manner notification method using a gap filler ID comprising the step of displaying a notification message indicating that the public place. The method of claim 1, wherein the gap filler ID table comprises at least one public place name, a gap filler ID corresponding to each public place, and at least one of Received Signal Strength Indication (RSSI) and Bit Error Rate (BER). Manor area notification method using the gap filler ID. The method of claim 1, further comprising: terminating display of a notification message informing that the public place is: If there is a key input for terminating the display of the notification message indicating that the public place, the manner of notifying the manner area using the gap filler ID further comprising the step of automatically switching the operation mode of the terminal to the manner mode. 2. The gap filler ID of claim 1, wherein the reference range for checking the public place is calculated by including a preset error degree from a signal strength value corresponding to the extracted gap filler ID in the public place gap filler ID table. Manner local notification method utilized.

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