WO2008069407A1 - The terminal device in which the channel renewal is possible according to the location information and channel renewal method using the terminal device - Google Patents

The terminal device in which the channel renewal is possible according to the location information and channel renewal method using the terminal device Download PDF

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Publication number
WO2008069407A1
WO2008069407A1 PCT/KR2007/004204 KR2007004204W WO2008069407A1 WO 2008069407 A1 WO2008069407 A1 WO 2008069407A1 KR 2007004204 W KR2007004204 W KR 2007004204W WO 2008069407 A1 WO2008069407 A1 WO 2008069407A1
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WO
WIPO (PCT)
Prior art keywords
module
region
terminal device
dmb
channel
Prior art date
Application number
PCT/KR2007/004204
Other languages
French (fr)
Inventor
Hyeoung Ho Bae
Original Assignee
Mds Technology Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mds Technology Co., Ltd. filed Critical Mds Technology Co., Ltd.
Publication of WO2008069407A1 publication Critical patent/WO2008069407A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/26—Arrangements for switching distribution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4524—Management of client data or end-user data involving the geographical location of the client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations

Definitions

  • the present invention relates, in general, to a terrestrial Digital Multimedia Broadcasting (DMB) terminal device and a channel update method using the terrestrial DMB terminal device and, more particularly, to a terrestrial DMB terminal device capable of updating a channel based on location information and a channel update method using the terrestrial DMB terminal, which are capable of automatically switching to a channel that provides the same information as a channel that was being watched in a current region and then automatically updating channel information based on received location information based on the path of movement of a user.
  • DMB Digital Multimedia Broadcasting
  • terrestrial DMB does not provide nationwide broadcasting using a Single Frequency Network (SFN) , but provides local broadcasting based on a Multi Frequency Network (MFN) . Accordingly, a DMB user must update information about the broadcast channels of a corresponding region in order to receive the service of another broadcasting station when crossing the border of the corresponding service region.
  • SFN Single Frequency Network
  • MFN Multi Frequency Network
  • a prior art DMB terminal device has inconvenience in that, as the user moves from a region, a user must manually conduct the overall procedure of receiving new channel information and connecting to a relevant channel after moving to another region.
  • an object of the present invention is to provide a terrestrial DMB terminal device capable of updating a channel based on location information and a channel update method using the terrestrial DMB terminal, which are capable of automatically switching to a channel that provides the same information as a channel that was being watched in a current region and then automatically updating channel information based on received location information based on the path of movement of a user.
  • the present invention provides a terrestrial DMB terminal device capable of updating a channel based on location information, including a DMB module for setting channel information for respective regions, and extracting and updating channel information by scanning channel information of a corresponding region; a GPS module for receiving location information of the terminal device from a satellite; a storage module for storing GIS data,- an encoding module for encoding current latitude and longitude information of the terminal device based on the GIS data; a voice output module for outputting content, related to a DMB broadcast and processing of region-based channel information, in a voice form; a video output module for outputting content, related to a DMB broadcast and processing of region-based channel information, in a video form; a region change determination module for determining occurrence of the terminal device's movement from a region by comparing the location information, encoded by the encoding module, with the region information currently set by the DMB module,- and a central control module for centrally controlling the DMB module, the GPS module, the
  • the terrestrial DMB terminal device further includes an overlap region determination module for determining whether a region in which the terminal device is located is a frequency overlap region under control of the central control module if the central control module determines that the movement from a region has occurred through the region change determination module.
  • the frequency overlap region has a radius ranging from 0.5 km to 1.5 km around a border of the region.
  • the location information is latitude and longitude information of the terminal device.
  • the present invention provides a method of updating a channel using a terrestrial DMB terminal device capable of updating a channel based on location information
  • the terrestrial DMB terminal device including a DMB module, a GPS module, a storage module, an encoding module, a voice output module, a video output module, a region change determination module and a central control module
  • the method including the steps of (a) the central control module receiving current location information of the terminal device through the GPS module; (b) the central control module encoding the location information through the encoding module,- (c) the central control module determining whether the terminal device has moved from a region by comparing the encoded current location information with region information, set by the DMB module, through the region change determination module; (d) if, as a result of the determination at step (c) , the movement from a region is determined to have occurred, the central control module determining whether a current region is a frequency overlap region using the overlap region determination module; (e) if, as a result of the determination at step (d
  • step (f) includes the steps of (f-1) the central control module receiving channel information currently being provided through the DMB module; (f-2) the central control module determining whether a same channel exists by comparing the channel information, currently being provided, with channel information of the changed region, set in the DMB module; (f-3) if, as a result of the determination at step (f- 2) , the same channel is determined to exist, the central control module switching to the same channel through the DMB module, updating a channel list, arid providing notification of the updated channel list through the voice output module and the video output module, and, if the same channel is not present, outputting a basic screen previously set by a user.
  • the method further includes a step of the central control module extracting available channel information by scanning channel information of the destination region through the DMB module if, as a result of the determination at step (e) , a DMB is determined not to be currently provided.
  • the method further includes, after step (f) , step (g) of repeating steps (SlOO) to (S600) if the central control module determines that the terminal device has moved to another region based on location information received through the GPS module and terminating the process if the central control module determines that the terminal device has not moved to another region.
  • the scanning the channel information is performed by scanning only a frequency band available in the destination region.
  • FIG. 1 is a block diagram showing the construction of a terrestrial DMB terminal device according to an embodiment of the present invention, which is capable of updating a channel based on location information,-
  • FIG. 2 is an overall flowchart showing a channel update method using the terrestrial DMB terminal device according to an embodiment of the present invention, which is capable of updating a channel; and
  • FIG. 3 is a detailed flowchart showing step S600 of the channel update method using the terrestrial DMB terminal device according to the embodiment of the present invention, which is capable of updating a channel based on location information. ** Description of reference numerals of principal elements **
  • DMB module 120 GPS module
  • a terrestrial DMB terminal device capable of updating a channel based on location information will be described with reference to FIG. 1 below.
  • FIG. 1 is a block diagram showing the construction of the terrestrial DMB terminal device (hereinafter referred to as a "terminal device') 100 according to the embodiment of the present invention, which is capable of updating a channel based on location information.
  • the terminal device includes a
  • DMB module 110 DMB module 110, a GPS module 120, a storage module 130, an encoding module 140, a voice output module 150, a video output module 160, a region change determination module 170, and a central control module 180.
  • the DMB module 110 sets regional channel information, and functions to extract and update channel information while scanning the channel information of a relevant region.
  • the GPS module 120 functions to receive the current latitude and longitude information (hereinafter referred to as
  • the storage module 130 stores Geographic Information
  • the GIS data is data related to an information system for storing, extracting, managing and analyzing various types of information about the surface of the Earth and providing the information to users, and includes data for displaying the location information of the terminal device , in the present embodiment.
  • rewritable nonvolatile memory such as EEPROM
  • the present invention is not limited thereto .
  • the encoding module 140 functions to encode current location information based on the GIS data.
  • the encoding module 140 uses a method of dividing the location information into a specific number of unit blocks, each having certain shape information, and encoding respective unit blocks so as to compress them.
  • the voice output module 150 and the video output module 160 function to output all information related to DMB and region-based channel information processing in the form of voice and video.
  • a typical speaker and a Liquid Crystal Display (LCD) may be used as the voice output module 150 and the video output module 160, respectively.
  • the region change determination module 170 functions to determine whether the terminal device has moved from a specific region by comparing current location information, encoded by the encoding module, with region information currently set by the DMB module.
  • the central control module 180 functions to centrally control the DMB module 110, the GPS module 120, the storage module 130, the encoding module 140, the voice output module 150, the video output module 160, and the region change determination module 170.
  • an overlap region determination module 190 for determining whether a region in which the terminal device is located is a frequency overlap region under the control of the central control module 180.
  • the central control module 180 does not determine that the terminal device has completely moved from a region until it primarily determines that the terminal device has moved from the region using the region change determination module and then secondarily determines that the terminal device has moved from the region using the overlap region determination module.
  • the frequency overlap region is set to a region having a radius ranging from 0.5 km to 1.5 km, and preferably 1 km, around the border of a region of interest, the frequency overlap region may be set differently, and thus the present invention is not limited to the above-described range.
  • FIG. 2 is an overall flowchart showing the channel update method according to the embodiment of the present invention.
  • the central control module 180 receives current location information from the terminal device through the GPS module 120 at step SlOO, and encodes the location information using GIS data through the encoding module 140 at step S200.
  • the central control module 180 determines whether the terminal device has moved from a region by comparing the current location information, encoded through the region change determination module 170, with the region information set by the DMB module 110 at step S300.
  • the central control module 180 determines whether the current region is a frequency overlap region using the overlap region determination module 190 at step S400.
  • the central control module 180 determines that the terminal device has completely moved from the region, and determines whether a current DMB broadcast is being provided at step S500.
  • the central control module 180 receives information about channels, currently being provided, through the DMB module 110 at step S610, and determines whether the same channel exists by comparing the information about channels, currently being provided, with the channel information of a destination region, set in the DMB module 110, as shown in FIG. 3, at step S620.
  • the central control module 180 performs switching to the same channel and then updates a channel list using the DMB module 110, and provides notification of the updated channel list through the voice output module 150 and the video output module 160; if the same channel is determined not to exist, a basic screen set by a user is output at step S630.
  • the central control module 180 scans the channel information of the destination region through the DMB module 110, extracts available channel information, and performs the process of step S600.
  • the scanning of the channel information of the corresponding region is performed by scanning only a frequency band available in the corresponding region. The reason for this is to prevent the different channels of the two regions from being all received unless the overlap region is clearly defined.
  • step S600 the central control module 180 determines that the terminal device has moved to still another region based on the location information received through the GPS module 120, steps SlOO to S600 are repeated; if the terminal device has not moved to still another region, the process ends at step S700.
  • the present invention having the above-described construction and characteristics, automatically searches and updates channel information at the time of movement to a region, unlike the prior art.
  • the present invention has characteristic advantages in that a user can be automatically provided with the same channel, which was being watched in a current region, while driving, and in that it is not necessary to interrupt a broadcast that is currently being watched at the time of channel scanning.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Databases & Information Systems (AREA)
  • Ecology (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

A terrestrial Digital Multimedia Broadcasting (DMB) terminal device capable of updating a channel based on location information and a channel update method using the terrestrial DMB terminal. The terrestrial DMB terminal device includes a DMB module for setting channel information and extracting and updating channel information; a GPS module for receiving location information of the terminal device from a satellite; a storage module for storing GIS data; an encoding module for encoding current latitude and longitude information of the terminal device; voice and video output modules for outputting content, related to a DMB broadcast and processing of region-based channel information, in voice and video forms, respectively; a region change determination module for determining occurrence of the terminal device's movement from a region by comparing the location information with the region information; and a central control module for centrally controlling the above elements.

Description

[DESCRIPTION]
[invention Title]
THE TERMINAL DEVICE IN WHICH THE CHANNEL RENEWAL IS POSSIBLE ACCORDING TO THE LOCATION INFORMATION AND CHANNEL RENEWAL METHOD USING THE TERMINAL DEVICE
[Technical Field]
The present invention relates, in general, to a terrestrial Digital Multimedia Broadcasting (DMB) terminal device and a channel update method using the terrestrial DMB terminal device and, more particularly, to a terrestrial DMB terminal device capable of updating a channel based on location information and a channel update method using the terrestrial DMB terminal, which are capable of automatically switching to a channel that provides the same information as a channel that was being watched in a current region and then automatically updating channel information based on received location information based on the path of movement of a user.
[Background Art]
As is well known, terrestrial DMB does not provide nationwide broadcasting using a Single Frequency Network (SFN) , but provides local broadcasting based on a Multi Frequency Network (MFN) . Accordingly, a DMB user must update information about the broadcast channels of a corresponding region in order to receive the service of another broadcasting station when crossing the border of the corresponding service region.
A prior art DMB terminal device has inconvenience in that, as the user moves from a region, a user must manually conduct the overall procedure of receiving new channel information and connecting to a relevant channel after moving to another region.
[Disclosure] [Technical Problem] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a terrestrial DMB terminal device capable of updating a channel based on location information and a channel update method using the terrestrial DMB terminal, which are capable of automatically switching to a channel that provides the same information as a channel that was being watched in a current region and then automatically updating channel information based on received location information based on the path of movement of a user.
[Technical Solution]
In order to accomplish the above object, the present invention provides a terrestrial DMB terminal device capable of updating a channel based on location information, including a DMB module for setting channel information for respective regions, and extracting and updating channel information by scanning channel information of a corresponding region; a GPS module for receiving location information of the terminal device from a satellite; a storage module for storing GIS data,- an encoding module for encoding current latitude and longitude information of the terminal device based on the GIS data; a voice output module for outputting content, related to a DMB broadcast and processing of region-based channel information, in a voice form; a video output module for outputting content, related to a DMB broadcast and processing of region-based channel information, in a video form; a region change determination module for determining occurrence of the terminal device's movement from a region by comparing the location information, encoded by the encoding module, with the region information currently set by the DMB module,- and a central control module for centrally controlling the DMB module, the GPS module, the storage module, the encoding module, the voice output module, the video output module, and the region change determination module .
Preferably, the terrestrial DMB terminal device further includes an overlap region determination module for determining whether a region in which the terminal device is located is a frequency overlap region under control of the central control module if the central control module determines that the movement from a region has occurred through the region change determination module.
Preferably, the frequency overlap region has a radius ranging from 0.5 km to 1.5 km around a border of the region. Preferably, the location information is latitude and longitude information of the terminal device.
Meanwhile, the present invention provides a method of updating a channel using a terrestrial DMB terminal device capable of updating a channel based on location information, the terrestrial DMB terminal device including a DMB module, a GPS module, a storage module, an encoding module, a voice output module, a video output module, a region change determination module and a central control module, the method including the steps of (a) the central control module receiving current location information of the terminal device through the GPS module; (b) the central control module encoding the location information through the encoding module,- (c) the central control module determining whether the terminal device has moved from a region by comparing the encoded current location information with region information, set by the DMB module, through the region change determination module; (d) if, as a result of the determination at step (c) , the movement from a region is determined to have occurred, the central control module determining whether a current region is a frequency overlap region using the overlap region determination module; (e) if, as a result of the determination at step (d) , the current region is determined not to be a frequency overlap region, the central control module determining that the current region is a region from which the terminal device has completely moved, and determining whether DMB is currently being provided; and (f) if, as a result of the determination at step (e) , a DMB is determined to currently be provided, the central control module updating a channel list through the DMB module.
Preferably, step (f) includes the steps of (f-1) the central control module receiving channel information currently being provided through the DMB module; (f-2) the central control module determining whether a same channel exists by comparing the channel information, currently being provided, with channel information of the changed region, set in the DMB module; (f-3) if, as a result of the determination at step (f- 2) , the same channel is determined to exist, the central control module switching to the same channel through the DMB module, updating a channel list, arid providing notification of the updated channel list through the voice output module and the video output module, and, if the same channel is not present, outputting a basic screen previously set by a user.
Preferably, the method further includes a step of the central control module extracting available channel information by scanning channel information of the destination region through the DMB module if, as a result of the determination at step (e) , a DMB is determined not to be currently provided.
Preferably, the method further includes, after step (f) , step (g) of repeating steps (SlOO) to (S600) if the central control module determines that the terminal device has moved to another region based on location information received through the GPS module and terminating the process if the central control module determines that the terminal device has not moved to another region.
Preferably, the scanning the channel information is performed by scanning only a frequency band available in the destination region.
[Description of Drawings]
FIG. 1 is a block diagram showing the construction of a terrestrial DMB terminal device according to an embodiment of the present invention, which is capable of updating a channel based on location information,-
FIG. 2 is an overall flowchart showing a channel update method using the terrestrial DMB terminal device according to an embodiment of the present invention, which is capable of updating a channel; and FIG. 3 is a detailed flowchart showing step S600 of the channel update method using the terrestrial DMB terminal device according to the embodiment of the present invention, which is capable of updating a channel based on location information. ** Description of reference numerals of principal elements **
110: DMB module 120: GPS module
130: storage module 140: encoding module 150: voice output module 160: video output module 170: region change determination module 180: central control module 190: overlap region determination module
[Best Mode]
The present invention will be described in detail below with reference to the accompanying drawings . A terrestrial DMB terminal device capable of updating a channel based on location information according to an embodiment of the present invention will be described with reference to FIG. 1 below.
FIG. 1 is a block diagram showing the construction of the terrestrial DMB terminal device (hereinafter referred to as a "terminal device') 100 according to the embodiment of the present invention, which is capable of updating a channel based on location information. The terminal device includes a
DMB module 110, a GPS module 120, a storage module 130, an encoding module 140, a voice output module 150, a video output module 160, a region change determination module 170, and a central control module 180.
In detail, the DMB module 110 sets regional channel information, and functions to extract and update channel information while scanning the channel information of a relevant region.
The GPS module 120 functions to receive the current latitude and longitude information (hereinafter referred to as
'location information') of a terminal device from a satellite. The storage module 130 stores Geographic Information
System (GIS) data. The GIS data is data related to an information system for storing, extracting, managing and analyzing various types of information about the surface of the Earth and providing the information to users, and includes data for displaying the location information of the terminal device , in the present embodiment. Meanwhile, although rewritable nonvolatile memory, such as EEPROM, is used as the storage module 130, the present invention is not limited thereto .
The encoding module 140 functions to encode current location information based on the GIS data. In this case, the encoding module 140 uses a method of dividing the location information into a specific number of unit blocks, each having certain shape information, and encoding respective unit blocks so as to compress them. The voice output module 150 and the video output module 160 function to output all information related to DMB and region-based channel information processing in the form of voice and video. A typical speaker and a Liquid Crystal Display (LCD) may be used as the voice output module 150 and the video output module 160, respectively.
The region change determination module 170 functions to determine whether the terminal device has moved from a specific region by comparing current location information, encoded by the encoding module, with region information currently set by the DMB module.
The central control module 180 functions to centrally control the DMB module 110, the GPS module 120, the storage module 130, the encoding module 140, the voice output module 150, the video output module 160, and the region change determination module 170.
Meanwhile, in the case where a user sets a path across a plurality of regions, it is difficult to determine whether the terminal device 100 has completely moved from one region to another region. Accordingly, an overlap region determination module 190 for determining whether a region in which the terminal device is located is a frequency overlap region under the control of the central control module 180.
That is, the central control module 180 does not determine that the terminal device has completely moved from a region until it primarily determines that the terminal device has moved from the region using the region change determination module and then secondarily determines that the terminal device has moved from the region using the overlap region determination module.
Although, in the present embodiment, the frequency overlap region is set to a region having a radius ranging from 0.5 km to 1.5 km, and preferably 1 km, around the border of a region of interest, the frequency overlap region may be set differently, and thus the present invention is not limited to the above-described range.
The overall flow of a channel update method using a terrestrial DMB terminal device according to an embodiment of the present invention, which is capable of updating a channel according to location information, will be described below with reference to FIGS . 2 and 3.
FIG. 2 is an overall flowchart showing the channel update method according to the embodiment of the present invention. As shown in this drawing, the central control module 180 receives current location information from the terminal device through the GPS module 120 at step SlOO, and encodes the location information using GIS data through the encoding module 140 at step S200.
Thereafter, the central control module 180 determines whether the terminal device has moved from a region by comparing the current location information, encoded through the region change determination module 170, with the region information set by the DMB module 110 at step S300.
If, as a result of the determination at step S300, the terminal device is determined to have moved from a specific region, the central control module 180 determines whether the current region is a frequency overlap region using the overlap region determination module 190 at step S400.
If, as a result of the determination at step S400, the current region is determined not to be an overlap region, the central control module 180 determines that the terminal device has completely moved from the region, and determines whether a current DMB broadcast is being provided at step S500.
If, as a result of the determination at step S500, the DMB broadcast is determined to be being provided, the central control module 180 receives information about channels, currently being provided, through the DMB module 110 at step S610, and determines whether the same channel exists by comparing the information about channels, currently being provided, with the channel information of a destination region, set in the DMB module 110, as shown in FIG. 3, at step S620.
If, as a result of the determination at step S620, the same channel is determined to exist, the central control module 180 performs switching to the same channel and then updates a channel list using the DMB module 110, and provides notification of the updated channel list through the voice output module 150 and the video output module 160; if the same channel is determined not to exist, a basic screen set by a user is output at step S630.
If, as a result of the determination at step S500, a DMB broadcast is determined not to be being provided, the central control module 180 scans the channel information of the destination region through the DMB module 110, extracts available channel information, and performs the process of step S600. In this case, the scanning of the channel information of the corresponding region is performed by scanning only a frequency band available in the corresponding region. The reason for this is to prevent the different channels of the two regions from being all received unless the overlap region is clearly defined.
If, after step S600, the central control module 180 determines that the terminal device has moved to still another region based on the location information received through the GPS module 120, steps SlOO to S600 are repeated; if the terminal device has not moved to still another region, the process ends at step S700. The present invention, having the above-described construction and characteristics, automatically searches and updates channel information at the time of movement to a region, unlike the prior art. The present invention has characteristic advantages in that a user can be automatically provided with the same channel, which was being watched in a current region, while driving, and in that it is not necessary to interrupt a broadcast that is currently being watched at the time of channel scanning.
Although the description and illustration has been given in conjunction with the preferred embodiments, which illustrate the technical spirit of the present invention, the present invention is not limited only to the described and illustrated construction and operation, and it will be apparent to those skilled in the art that various variations and modifications of the present invention are possible. Accordingly, all such variations, modifications and equivalents should be considered to fall within the scope of the present invention.
[industrial Applicability] According to the above-described present invention, automatic switching to a channel that provides the same information as a channel that was being watched in a current region can be performed while a broadcast is being watched without the intervention of a user or the interruption of the watching of a broadcast, and DMB channel information can be automatically updated, thus providing an effect of increasing a user's convenience.

Claims

[CLAIMS] [Claim l]
A terrestrial Digital Multimedia Broadcasting (DMB) terminal device capable of updating a channel based on location information, comprising: a DMB module (110) for setting channel information for respective regions, and extracting and updating channel information by scanning channel information of a corresponding region; a Global Positioning System (GPS) module (120) for receiving location information of the terminal device from a satellite; a storage module (130) for storing Geographical Information System (GIS) data,- an encoding module (140) for encoding current latitude and longitude information of the terminal device based on the GIS data; a voice output module (150) for outputting content, related to a DMB broadcast and processing of region-based channel information, in a voice form,- a video output module (160) for outputting content, related to a DMB broadcast and processing of region-based channel information, in a video form; a region change determination module (170) for determining occurrence of the terminal device's movement from a region by comparing the location information, encoded by the encoding module (140) , with the region information, currently set by the DMB module (110) ; and a central control module (180) for centrally controlling the DMB module (110) , the GPS module (120) , the storage module
(130) , the encoding module (140) , the voice output module (150) , the video output module (160) , and the region change determination module (170) .
[Claim 2]
The terrestrial DMB terminal device as set forth in claim 1, further comprising an overlap region determination module (190) for determining whether a region in which the terminal device is located is a frequency overlap region under control of the central control module (180) if the central control module (180) determines that the movement from a region has occurred through the region change determination module (170) .
[Claim 3]
The terrestrial DMB terminal device as set forth in claim 2, wherein the frequency overlap region has a radius ranging from 0.5 km to 1.5 km around a border of the region.
[Claim 4]
The terrestrial DMB terminal device as set forth in claim 1, wherein the location information is latitude and longitude information of the terminal device (100) .
[Claim 5]
A method of updating a channel using a terrestrial DMB terminal device (100) capable of updating a channel based on location information, the terrestrial DMB terminal device (100) including a DMB module (110) , a GPS module (120) , a storage module (130) , an encoding module (140) , a voice output module (150) , a video output module (160) , a region change determination module (170) and a central control module (180) , the method comprising the steps of: (a) the central control module (180) receiving current location information of the terminal device through the GPS module (120) ;
(b) the central control module (180) encoding the location information through the encoding module (140) ; (c) the central control module (180) determining whether the terminal device has moved from a region by comparing the encoded current location information with region information, set by the DMB module (110) , through the region change determination module (170) ; (d) if, as a result of the determination at step (c) , the movement from a region is determined to have occurred, the central control module (180) determining whether a current region is a frequency overlap region using the overlap region determination module (190) ; (e) if, as a result of the determination at step (d) , the current region is determined not to be a frequency overlap region, the central control module (180) determining that the current region is a region from which the terminal device has completely moved, and determining whether DMB is currently being provided; and
(f) if, as a result of the determination at step (e) , a DMB is determined to currently be provided, the central control module (180) updating a channel list through the DMB module (110) .
[Claim 6]
The method as set forth in claim 5, wherein step (f) comprises the steps of:
(f-1) the central control module (180) receiving channel information currently being provided through the DMB module (110) ;
(f-2) the central control module (180) determining whether a same channel exists by comparing the channel information, currently being provided, with channel information of the changed region, set in the DMB module
(HO) ;
(f-3) if, as a result of the determination at step (f- 2) , the same channel is determined to exist, the central control module (180) switching to the same channel through the
DMB module (110) , updating a channel list, and providing notification of the updated channel list through the voice output module (150) and the video output module (160) , and, if the same channel is not present, outputting a basic screen previously set by a user.
[Claim 7]
The method as set forth in claim 5, further comprising a step of the central control module (180) extracting available channel information by scanning channel information of the destination region through the DMB module (110) if, as a result of the determination at step (e) , a DMB is determined not to be currently provided.
[Claim 8]
The method as set forth in claim 5, further comprising, after step (f) , step (g) of repeating steps (SlOO) to (S600) if the central control module (180) determines that the terminal device has moved to another region based on location information received through the GPS module (120) , and terminating the process if the central control module (180) determines that the terminal device has not moved to another region.
[Claim 9]
The method as set forth in claim 5, wherein the frequency overlap region has a radius ranging from 0.5 km to 1.5 km around a border of the region.
[Claim 10]
The method as set forth in claim 5, wherein the location information is latitude and longitude information of the terminal device ( 100 ) .
[Claim ll]
The method as set forth in claim 7, wherein the scanning the channel information is performed by scanning only a frequency band available in the destination region.
PCT/KR2007/004204 2006-12-04 2007-08-31 The terminal device in which the channel renewal is possible according to the location information and channel renewal method using the terminal device WO2008069407A1 (en)

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KR1020060121242A KR100741511B1 (en) 2006-12-04 2006-12-04 The terminal device in which the channel renewal is possible according to the location information and channel renewal method using the terminal device
KR10-2006-0121242 2006-12-04

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WO2006068452A1 (en) * 2004-12-23 2006-06-29 Posdata Co., Ltd. System and method for information supplying service
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WO2006068452A1 (en) * 2004-12-23 2006-06-29 Posdata Co., Ltd. System and method for information supplying service
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WO2011056406A1 (en) * 2009-10-26 2011-05-12 Echostar Technologies L.L.C. Systems and methods for television receiving system setup including terrestrial transmitter locating

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