KR20080096007A - Dmb receiver capable of automatic updating channel list and method thereof - Google Patents

Abstract

A DMB receiving device having a function automatically updating a channel list and a method for automatically updating the channel list are provided to update a receivable channel list automatically by using a front end module of an idle state in the DMB receiving device with a plurality of front end modules, thereby updating a broadcast signal automatically serviced to a corresponding region and maintaining the latest information with regard to the receivable channel list. An input processing module(113) receives a command input by a user and reads and transmits the command to a configuration unit. The configuration part is a front end unit control module, a channel list managing module, a video output module, and a voice output module. When the command input by the user is a channel receiving command, the command is transmitted to the front end unit control module(111), the front end unit control module applies power to one of two front end modules and activates the front end module to change a receiving frequency to a frequency of the channel selected by the user. And a video output module(114) and a voice output module(115) respectively transmit a video signal and a voice signal to an input/output unit(150) to output the video and voice signals through a display and a speaker as the broadcast signal received from the first front end module(122) is received from an AV processing unit(130-1) to extract the video and voice signals.

Description

DMB Receiver Capable of Automatic Updating Channel List and Method Thereof}

1 is a configuration diagram of a DMB receiving apparatus applied to the present invention;

2 is a block diagram of a DMB receiving apparatus according to a first embodiment of the present invention;

3 is a configuration diagram of a DMB receiving apparatus according to a second embodiment of the present invention;

4 is a configuration diagram of a DMB receiving apparatus according to a third embodiment of the present invention;

5 is a configuration diagram of a DMB receiving apparatus according to a fourth embodiment of the present invention;

6 is a flowchart illustrating a method of automatically updating a channel list in a DMB receiving apparatus according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: DMB receiving device 110: control unit

120: front end unit 130: AV processing unit

140: memory 150: input / output unit

111, 132: front end control module 112, 133: channel list management module

113: input processing module 114: video output module

115: audio output module 116: AV control module

131, 135: AV playback module 134: memory

The present invention relates to a digital multimedia broadcasting (DMB) receiving apparatus, and more particularly, to a DMB receiving apparatus having a channel list automatic updating function and a channel list automatic updating method.

DMB is a system standard that attempts to provide a multimedia broadcasting service including video based on the DAB (Digital Audio Broadcasting) system, a European digital radio broadcasting standard that simultaneously provides high quality audio and data services.

DMB can be classified into terrestrial DMB and satellite DMB, and has the advantage of being able to watch high-quality multi-channel multimedia broadcasting anytime and anywhere based on its excellent mobility.

Currently, since DMB has a limited serviceable area, a transmitter is installed for each area to cover the area. In this case, in order to prevent crosstalk between transmitters, the same channel is serviced by different broadcasting frequencies in different regions, and in some cases, contents are produced and serviced by regions.

Accordingly, when a user moves to another area while watching DMB, or wants to watch a self-service broadcast in the moved area, there is a problem in that the user cannot watch the broadcast based on channel information preset in the DMB receiving apparatus. Therefore, when the user moves to another region, the user should scan the broadcast signal transmitted from the transmitter installed in the region to perform channel setting.

As described above, there is an inconvenience in that the user must manually search the channel list when moving to another area, and there is a disadvantage that the user cannot watch the broadcast while searching for the list of receivable channels.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and disadvantages, and has a technical problem to provide a DMB receiving apparatus and a channel list automatic updating method capable of automatically updating a DMB broadcasting signal at a predetermined period.

Another technical problem of the present invention is to provide a method for automatically updating a DMB receiving device and a channel list that can automatically scan a list of channels in a region where a DMB receiving device is located to always keep the list of broadcast channels available in the region up to date. have.

DMB receiving apparatus having a channel list automatic updating function according to an embodiment of the present invention for achieving the above-described technical problem is a DMB receiving apparatus having a plurality of front-end modules, as the user selects a specific channel, It receives and outputs a broadcast signal of the specific channel through one front end module, searches for a front end module in an inactive state, and updates a list of available channels by driving the front end module in an inactive state.

Meanwhile, the method for automatically updating a channel list in a DMB receiving apparatus according to an embodiment of the present invention is a method for automatically updating a channel list of a DMB receiving apparatus including a plurality of front-end modules, wherein main power is applied to the DMB receiving apparatus. First step; As the user selects a particular channel, checking whether there is an inactive frontend module; A third step of driving a front end module in an inactive state and transitioning to an active state if there is a front end module in an inactive state as a result of the checking of the second step; A fourth step of searching for a broadcast channel that can be received by the front-end module transitioned to the active state; And a fifth step of storing the searched channel list as the channel search is completed in the front-end module transitioned to the active state.

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 DMB receiving apparatus applied to the present invention.

As shown, the DMB receiving apparatus 10 applied to the present invention includes a control unit 110, a front end unit 120, an AV processing unit 130, a memory 140, and input / output for controlling the overall operation of the DMB receiving apparatus. The unit 150 is included.

More specifically, the front end unit 120 automatically searches for a signal received from the DMB base station (transmitter) to the antenna when the power is applied, and changes the frequency to the corresponding channel as the user selects a specific channel to provide a signal of the corresponding channel. After receiving and amplifying, it converts to a baseband signal and then to digital data. The front end unit 120 may include at least one high frequency processor and a baseband processor. In FIG. 1, a first front end module 122 having a first high frequency processor and a first baseband processor, and A front end portion 120 having two front end modules comprising a second front end module 124 having a second high frequency processor and a second baseband processor is shown.

When the front end unit 120 includes two front end modules, the front end unit 120 may simultaneously watch broadcasts of two channels. Alternatively, one front end module may watch a broadcast and the other front end module may decode broadcast data.

The AV processor 130 receives the demodulated and decoded broadcast signal converted from the front end unit 120 into baseband digital data, and extracts a video signal and an audio signal.

The input / output unit 150 transmits an event according to a signal input by the user through the input unit to the controller 110 and outputs a broadcast signal reproduced by the AV processor 130 through an output unit, that is, a display and a speaker. do.

The memory 140 stores programs, control data, broadcast data, and the like necessary for the DMB receiving apparatus to operate.

As such, the DMB receiving apparatus 10 having two front end modules receives a broadcast signal for a channel selected by a user through one front end module, and the DMB receiving apparatus 10 through the other front end module. ) Can automatically scan the list of available channels.

In other words, one of the front-end modules is driven by the user's channel reception command to receive and output the broadcast signal of the corresponding channel, while the other front-end module is driven to search for a list of available channels and then to the memory. By storing it, the broadcast signal that can be watched in the region can be kept up to date.

The channel list automatic update may be performed by the controller 110 or the AV processor 130. The channel list automatic update will be described below with reference to FIGS. 2 to 5.

FIG. 2 is a block diagram of a DMB receiving apparatus according to a first embodiment of the present invention. The controller 110-1 controls the front end unit 120 to automatically update a channel list.

Referring to FIG. 2, the control unit 110-1 provided in the DMB receiving apparatus 10-1 of the present invention includes a front end control module 111, a channel list management module 112, and an input processing module 113. , An image output module 114 and an audio output module 115.

The input processing module 113 receives and decodes a command input by a user and delivers the command to a component (front-end control module, channel list management module, video output module, audio output module, etc.) for processing the command. .

If the command input by the user is a channel reception command, it is transmitted to the front end control module 111, and the front end control module 111 is one of two front end modules, for example, the first front. The end module 122 is powered and transitioned to an active state to change the reception frequency to the frequency of the channel selected by the user.

In addition, the video output module 114 and the audio output module 115 receive the broadcast signal received by the first front end module 122 from the AV processor 130-1 and extract the video and audio signals. The video signal and the audio signal are respectively transmitted to the input / output unit 150 to be output through the display and the speaker.

Meanwhile, as the channel reception command is input by the user, the channel list management module 112 identifies the inactive front end module, for example, the second front end module 124, which is not in operation, and the second front end. The module 124 is powered and transitioned to an active state. Accordingly, the second front end module 124 performs a channel search, and the channel list management module 112 receives a receivable channel list from the second front end module 124 and stores the received channel list in the memory 140. .

When the user carrying the DMB receiving device moves, the list of available channels changes from time to time according to the influence of the feature or the characteristics of radio waves. The DMB receiving device of the present invention can receive the list of channels that can be received through the front end module in the idle state. By retrieving, the list of receivable channels can be kept up to date.

3 is a configuration diagram of a DMB receiving apparatus according to a second embodiment of the present invention, and illustrates a configuration of the DMB receiving apparatus which automatically updates a channel list by controlling the front end unit in the AV processing unit 130-2.

The AV processing unit 130-2 provided in the DMB receiving apparatus 10-2 according to the present embodiment includes an AV playback module 131, a front end control module 132, and a channel list management module 133. .

Since the AV processor 130-2 automatically updates the channel list, the controller 110-2 controls the controller configuration of the general DMB receiving apparatus, that is, the input processing module 113, the image output module 114, and the audio output module. 115 is provided.

As the user inputs a channel reception command, the front end control module 132 drives the first front end module 122 and is broadcast through the corresponding channel, for example, by the control of the input processing module 113. Receive the signal.

Accordingly, the AV playback module 131 extracts the video and audio signals from the broadcast signal received by the first front end module 122 and transmits the video and audio signals to the controller 110-2, and the video output module 114 and the audio output module. 115 outputs a video and audio signal through a display and a speaker, respectively.

Meanwhile, when a channel reception command is input by the user, the channel list management module 133 checks whether a front end module in an inactive state exists. As a result, since the second front end module 124 is in an inactive state, power is applied to the second front end module 124. Accordingly, the second front end module 124 is driven to search for a list of receivable channels and transmit a search result to the channel list management module 133.

The channel list management module 133 receiving the channel list search result is stored in the second memory 144.

The DMB receiving apparatus including two front end modules may also include two AV playback units for extracting video and audio signals from broadcast signals received by each front end module.

When the DMB receiving device is provided with two front end modules and an AV playback unit, the user can watch the broadcasting signal for the channel that the DMB receiving device automatically searches while watching the broadcasting signal for the channel selected by the user. It will be described with reference to Figures 4 and 5 as follows.

4 is a configuration diagram of a DMB receiving apparatus according to a third embodiment of the present invention. The control unit 110-3 controls the front end unit 120 to automatically update the channel list, and the AV processing unit 130-3. Shows the configuration of the DMB receiving apparatus in the case where it includes two AV playback modules 131 and 134.

The operation of the controller 110-3 is similar to the operation of the controller 110-1 described with reference to FIG. 2. However, as the second front end unit 124 performs a channel search, the second AV playback module 134 extracts the video and audio signals from the broadcast signal that can be received by the AV control module 116. This is output through the input / output unit 150.

5 is a block diagram of a DMB receiving apparatus according to a fourth embodiment of the present invention, wherein the AV processing unit 130-4 including two AV playback modules 131 and 134 controls the front end unit 120. The configuration of the DMB receiving apparatus in the case of automatically updating the channel list is shown.

The operation of the AV processor 130-4 is similar to the operation of the AV processor 130-2 described with reference to FIG. 3. However, as the second front end unit 124 performs a channel search, the video and audio signals are extracted from the broadcast signal that can be received by the second AV playback module 134 under the control of the AV control module 116. This is output through the input / output unit 150, so that the user can view.

FIG. 6 is a flowchart illustrating a method for automatically updating a channel list in a DMB receiving apparatus according to an embodiment of the present invention, and receiving a broadcast signal selected by a user in a first front end module and a channel in a second front end module. An example of automatically updating a list will be described.

After the main power is applied to the DMB receiving apparatus (S101), as the user inputs a channel receiving command, the front end control module 111 or 132 provided in the control unit 110 or the AV processing unit 130 receives the first power. The front end module 122 is supplied with power and transitioned to an active state. In the first front end module 122, the frequency is changed to a channel selected by the user to receive a corresponding broadcast signal, and the image is processed by the AV processor 120. When the voice signal is extracted, data is output through the display and the speaker.

Meanwhile, the channel list management modules 112 and 133 provided in the control unit 110 or the AV processing unit 130 check the operation state of the front end module (S103) and check whether the front end module in the inactive state exists ( S105).

If there is a front end module in an inactive state, power is applied to the corresponding front end module, that is, the second front end module 124 (S107), and the baseband processor is driven (S109).

Accordingly, the second front end module 124 searches for a broadcast channel that can be received in the region where the DMB receiving apparatus is located and checks whether the channel search is completed (S111). As a result of the check, when the channel search is completed, the searched channel information is transmitted to the channel list management modules 112 and 133, and the channel list management modules 112 and 133 store the channel list in the memory (S113).

On the other hand, if there is no front end module in the inactive state as a result of checking in step S105, the process proceeds to step S103, and monitors whether there is a front end module in the inactive state.

If the DMB receiving apparatus includes a plurality of AV playback modules, the broadcast signal for the channel searched by the second front end module is also output through the output unit so that the user can view it.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

According to the present invention, a DMB receiving apparatus having a plurality of front end modules can automatically update a list of receivable channels by using an inactive front end module.

Accordingly, even when the holder of the DMB receiving apparatus moves between regions, it is possible to automatically update a broadcast signal serviced in the region, and to maintain a list of available channels at all times with the latest information.

Claims (8)

A DMB receiving apparatus having a plurality of front end modules, As the user selects a specific channel, the front end module receives and outputs a broadcast signal of the specific channel through one front end module, searches for a front end module in an inactive state, and drives a front end module in an inactive state. A DMB receiving apparatus having a channel list automatic update function, characterized in that for updating a list of receivable channels. The method of claim 1, The DMB receiving apparatus includes an AV processor that extracts a video and audio signal from a broadcast signal received through the front end module, and a controller that outputs a video and audio signal extracted by the AV processor. The controller may further include: a front end control module configured to change any frequency of the channel selected by the user by driving any one front end module as the user selects a specific channel; And As the user selects a specific channel, the front end module is searched for the inactive state, the front end module is inactive and powered on, and then the active front end module is searched for in the active state. A channel list management module for receiving and storing a channel list; DMB receiving apparatus having a channel list automatic update function, comprising a. The method of claim 2, The AV processing unit includes a plurality of AV reproducing modules connected to each of the plurality of front end modules to extract video and audio signals from the broadcast signals received by the front end module, respectively. The control unit controls an AV playback module connected to the front end module transitioning to the active state to extract video and audio signals from the broadcast signal for the channel searched by the front end module transitioning to the active state. The DMB receiving apparatus having a channel list automatic update function, further comprising a module. The method of claim 1, The DMB receiving apparatus includes an AV processor that extracts a video and audio signal from a broadcast signal received through the front end module, and a controller that outputs a video and audio signal extracted by the AV processor. The AV processor may further include: a front end control module configured to change one of the front end modules to a frequency of the channel selected by the user as the user selects a specific channel; And As the user selects a specific channel, the front end module is searched for the inactive state, the front end module is inactive and powered on, and the active front end module is searched for in the active state. A channel list management module for receiving and storing a channel list; DMB receiving apparatus having a channel list automatic update function, comprising a. The method of claim 4, wherein The AV processing unit includes a plurality of AV reproducing modules connected to each of the plurality of front end modules to extract video and audio signals from the broadcast signals received by the front end module, respectively. The control unit controls an AV playback module connected to the front end module transitioning to the active state to extract video and audio signals from the broadcast signal for the channel searched by the front end module transitioning to the active state. The DMB receiving apparatus having a channel list automatic update function, further comprising a module. A method of automatically updating a channel list of a DMB receiving apparatus having a plurality of front end modules, A first step of applying main power to the DMB receiving apparatus; As the user selects a particular channel, checking whether there is an inactive frontend module; A third step of driving a front end module in an inactive state and transitioning to an active state if there is a front end module in an inactive state as a result of the checking of the second step; A fourth step of searching for a broadcast channel that can be received by the front-end module transitioned to the active state; And A fifth step of storing a searched channel list as channel search is completed in the front-end module transitioned to the active state; Automatically update the channel list in the DMB receiving device including a. The method of claim 6, And as a result of the checking of the second step, when there is no front-end module in the inactive state, the method further includes a step 2-1 of monitoring whether the front-end module in the inactive state exists. Automatic renewal method. The method of claim 6, After the first step, before performing the second step, as a user selects a specific channel, power is applied to any one of a plurality of front-end modules, and the frequency is changed to a channel selected by the user to broadcast the signal. Receiving step 1-1; And A first and second step of extracting and outputting a video and audio signal from the broadcast signal received in step 1-1; Automatically updating the channel list in the DMB receiving device, characterized in that it further comprises.

Images