WO2005064942A1 - Geographic information transceiving system and method thereof - Google Patents
Geographic information transceiving system and method thereof Download PDFInfo
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- WO2005064942A1 WO2005064942A1 PCT/KR2004/002336 KR2004002336W WO2005064942A1 WO 2005064942 A1 WO2005064942 A1 WO 2005064942A1 KR 2004002336 W KR2004002336 W KR 2004002336W WO 2005064942 A1 WO2005064942 A1 WO 2005064942A1
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- gecgraphic
- data
- map
- map data
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000010365 information processing Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 4
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- 230000011218 segmentation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
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- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
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- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
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- H04N7/165—Centralised control of user terminal ; Registering at central
Definitions
- the present invention relates to a geographic information transceiving system using a digital broadcasting network and a method thereof; and, more particularly, to a geographic information transceiving system using a digital broadcasting network, the system that segments update data on map and geographic information of a nation or a region, on which the geographic information service is provided, into data segments of an appropriate size based on the number and distance of digital broadcast transmitting sites, transmits them through a transmitter by giving them a priority when a broadcasted signal is multiplexed based on the size of data and the amount of geographic information included in the data, and receives new map data which are requested by a receiving part with a digital broadcasting receiver and applies the update map data to vehicle and private navigations.
- Background Art
- an electronic map is provided in the form of a compressed database. So, it is stored in a memory of a navigation system and used when a navigation application prcgram requires it.
- This type of electronic map has a problem that the size of the electronic map is different according to the amount of information reserved in it. Also, when geographic, road and topographic information are changed or updated, they should be stored in the same way as they are initially stored.
- the system and method segments new data on map and geographic information of the whole nation or a region, on which the geographic information service is provided, into data segments of an appropriate size based on the number and distance of digital broadcast transmitting sites, makes data segments files having a different data size based on a resolution and/or the significance of stored data, and transmits the files by multiplexing a digital broadcast signal according to significance. Then, a digital broadcast receiver receives new map data and applies them to vehicle and private navigations.
- a geographic information transmitting system using a digital broadcasting network including: a geographic information collecting unit for receiving real-time geographic information and real-time traffic information from a central/local geographic information collecting network; a geographic information processing unit for extracting/ processing local geographic information and local traffic information from the geographic information collecting unit and outputting whole area information, and geographic information/traffic information for a plurality of resolution levels; a digital broadcasting unit for converting and transmitting the geographic information/traffic information data from the geographic information processing unit in conformity to digital broadcast signals; a geographic information multiplexing unit for multiplexing the geographic information/traffic information data transmitted from the digital broadcasting unit with local geographic information data; and a transmitting unit for transmitting the multiplexed geographic information/traffic information data to a corresponding region.
- a geographic information receiving system using a digital broadcasting network including: a synchronizing unit for selecting/ synchronizing signals transmitted from each transmitter; a demodulating unit for demodulating the synchronized signals; a demultiplexing unit for demultiplexing the demodulated signals; a data decoding unit for decoding the demultiplexed signals; a storing unit for storing the decoded data; a map data managing unit for managing the data stored in the storing unit and displaying a requested part of a map; and a navigation/display unit for displaying map data and perform navigation under the control of the map data managing unit.
- a method for transmitting geographic information by using a digital broadcasting network including the steps of: a) collecting real-time geographic information and real-time traffic information from a central/local geographic information collecting network; b) extracting/processing local gecgraphic information and local traffic information from the collected gecgraphic information/traffic information and outputting whole area information and gecgraphic information/traffic information for a plurality of resolution levels; c) converting and transmitting the outputted gecgraphic information/traffic information data outputted from the step b) in conformity to digital broadcast signals; d) multiplexing the gecgraphic information/traffic information data transmitted in the step c) with local gecgraphic information data; e) performing encryption during the multiplexing in the step d) so that whether to allow a user to use the information be determined based on whether the user is a subscriber and what subscriber class the user belongs to; and f) transmitting the multiplexed gecgraphic information/traffic information data
- a method for receiving gecgraphic information by using a digital broadcasting network including the steps of: a) selecting/synchronizing signals transmitted from each transmitter; b) demodulating the synchronized signals; c) demultiplexing the demodulated signals; d) decoding the demultiplexed signals; e) performing decryption during the decoding in the step d) by determining whether to allow a user to use the gecgraphic information based on whether the user is a subscriber and what subscriber class the user belongs to; f) storing the decrypted data; g) managing the data stored in the step f) by using a map data managing unit and displaying a requested part of a map; and h) displaying map data and perform navigation under the control of the map data managing unit.
- the present invention presents technolcgy for providing gecgraphic information including an electronic map of a region in a digital broadcasting network that provides service on the entire broadcasting area by using a plurality of transmitting sites. It overcomes problems of conventional vehicle navigation systems which necessitate a high-capacity memory installed therein to save an electronic map for navigation and that they have to use other networks or media for upgrading.
- a receiver can manage high- volume map data efficiently by making electronic maps in a plurality of versions based on the amount of gecgraphic information in the map data when the map data are formed, giving priority to the data, and transmitting them periodically to the receiver. It also made it possible to use up- to-date gecgraphic information always by using a digital broadcasting receiver and provides easy access to new recent local gecgraphic information during an emergency situation, or while a user walks or drives a vehicle. Description of Drawings
- Eg. 1 is a diagram describing a gecgraphic information transceiving system using a digital broadcasting network in accordance with an embodiment of the present invention
- Eg. 2 is a block diagram depicting a gecgraphic information transmitting system (which is a map and gecgraphic information server) of the gecgraphic information transceiving system in accordance with an embodiment of the present invention
- Eg. 3 is a block diagram depicting a gecgraphic information receiving system (which is a digital broadcast receiver) of the gecgraphic information transceiving system in accordance with an embodiment of the present invention
- Eg. 4 is a diagram describing a multiplexing process based on the characteristics of the gecgraphic information in the gecgraphic information transceiving system in accordance with an embodiment of the present invention
- Eg. 5 is a diagram showing a map segmenting process in the gecgraphic information transceiving system in accordance with an embodiment of the present invention
- Eg. 6 is a long-distance navigation process in the gecgraphic information transceiving system in accordance with an embodiment of the present invention.
- Eg. 7 is a flowchart describing a gecgraphic information transceiving method using a digital broadcasting network in accordance with an embodiment of the present invention. Best Mode
- Eg. 1 is a diagram describing a gecgraphic information transceiving system using a digital broadcasting network in accordance with an embodiment of the present invention.
- the gecgraphic information transceiving system using a digital broadcasting network includes a map and gecgraphic information server 110, a digital broadcasting network 130 and a digital broadcasting receiver (now shown).
- the map and gecgraphic information server 110 collects recent map and gecgraphic information and transmits it to the digital broadcasting network 130.
- the digital broadcasting network 130 transmits data transmitted from the map and gecgraphic information server 110 to a region to which the navigation service is provided.
- the digital broadcasting receiver receives gecgraphic information from the digital broadcasting network 130 and converts the gecgraphic information into navigation information to be used by a user.
- the digital broadcasting network 130 includes a broadcasting station 120, a plurality of gecgraphic information multiplexers 141 to 143, and transmitting sites 131 to 133.
- the broadcasting station 120 transmits data collected and processed by the map and gecgraphic information server 110 to transmitters in conformity to output broadcast signals.
- the plurality of gecgraphic information multiplexers 141 to 143 multiplex signals outputted from the broadcasting station 120 with local gecgraphic information.
- the transmitting sites 131 to 133 transmit the signals multiplexed in the gecgraphic information multiplexers 141 to 143 to the digital broadcast receiver.
- the data collected and processed by the map and gecgraphic information server 110 are transmitted to the broadcasting station 120 of the digital broadcasting network 130.
- the broadcasting station 120 transmits the processed data to the transmitting sites 131 to 133 in conformity to output broadcast signals for each transmitter.
- the transmitting sites 131 to 133 multiplex them with local gecgraphic information by using the gecgraphic information multiplexers 141 to 143 and then transmit the multiplexed signals.
- the digital broadcast receivers which are scattered in each region, receive the map and gecgraphic information transmitted from the transmitting sites 131 to 133 and apply it to navigation or local gecgraphic information.
- the digital broadcast receivers are not shown in Eg. 1 and they will be described more in the account of Eg. 3.
- Eg. 2 is a block diagram depicting a gecgraphic information transmitting system (which is a map and gecgraphic information server) of the gecgraphic information transceiving system in accordance with an embodiment of the present invention.
- Eg. 2 shows a process of processing information collected by using a national or local map and a gecgraphic information network and extracting data required by digital broadcasting.
- the map and gecgraphic information server 110 includes a gecgraphic information collector 210, a gecgraphic information processor 220, the broadcasting station 120, the gecgraphic information multiplexers 141 to 143, and the transmitting sites 131 to 133.
- the gecgraphic information collector 210 receives real-time traffic information and real-time gecgraphic information from a central or local gecgraphic information collecting network and collects gecgraphic information and traffic information.
- the gecgraphic information processor 220 extracts and processes local gecgraphic information and local traffic information from the gecgraphic information collector 210 and outputs entire region information, gecgraphic information for each resolution, and traffic information for each resolution.
- the broadcasting station 120 converts the gecgraphic information data and the local information data inputted from the gecgraphic information processor 220 into data that conform to digital broadcast signals and performs transmission.
- the gecgraphic information multiplexers 141 to 143 multiplex the gecgraphic information data and the local information data transmitted from the broadcasting station 120 with local gecgraphic information.
- the transmitting sites 131 to 133 transmit the gecgraphic information data and the traffic information data which are multiplexed in the gecgraphic information multiplexers 141 to 143 to a region corresponding to the data.
- map and gecgraphic information server 110 of the present invention which has the above-mentioned structure is operated as follows.
- the map and gecgraphic information server 110 processes new data and provides the processed data to the broadcasting station 120 as soon as the new data are obtained so that the broadcasting station 120 could add the new data to information sent out to each region.
- the processed gecgraphic information are provided in several versions of map data having a different file size based on significances of the processed gecgraphic information and map resolutions.
- broadcasting station 120 receives gecgraphic information from the map and gecgraphic information server 110, it re-establishes the multiplexing structure of an existing gecgraphic information broadcasting channel to send out new map data to the transmitting sites 131 to 133 based on a predetermined map division standard.
- the broadcasting station 120 selects a proper map out of the map data having diverse file sizes, which are made in the map and gecgraphic information server 110, in consideration of broadcasting conditions and the size of a broadcasting data channel, multiplexes the map data and adds them to broadcast signals, and transmit the resultant signals to the transmitting sites 131 to 133.
- Eg. 3 is a block diagram depicting a gecgraphic information receiving system (which is a digital broadcast receiver) of the gecgraphic information transceiving system in accordance with an embodiment of the present invention.
- the drawing shows a process of receiving map and gecgraphic information by using a gecgraphic information network which is formed based on digital broadcasting.
- the digital broadcast receiver of the gecgraphic information transceiving system which is described in the present invention, includes a tuner 301, a demodulator 302, a demultiplexer 303, a data decoder 304, a memory 305, a map data manager 306, a navigation/display unit 307 and an audio/video (A/V) controller 308.
- the tuner 301 selects and synchronizes signals outputted from the transmitting sites 131 to 133.
- the demodulator 302 demodulates the signals outputted from the tuner 301.
- the demultiplexer 303 demultiplexes the demodulated signals outputted from the demodulator 302
- the data decoder 304 decodes the demultiplexed signals outputted from the demultiplexer 303.
- the memory 305 stores the decoded data outputted from the data decoder 304.
- the map data manager 306 manages the data stored in the memory 305 and displays a requested part.
- the navigation/display unit 307 displays map data under the control of the map data manager 306 and performs navigation.
- the audio/video (A/V) controller 308 controls and outputs audio/video data among the data outputted from the demultiplexer 303.
- the digital broadcast receiver has a memory 305 with a capacity sufficient to store map data of at least three regions to receive and store all the data of the regions at a boundary point on the map.
- the map data manager 306 performs a function of combining map data, which are decoded in each receiving module and stored in the memory 305, without cutOff at boundary points and displays a requested part on the navigation/display unit 307.
- Map and gecgraphic information data has data that are updated frequently and data that are rarely upgraded. Gecgraphical names and location coordinates of a particular spot are those upgraded frequently. Therefore, if the map data to be transmitted are classified and a carousel period is adjusted, they can be transmitted more effectively.
- the digital broadcast receiver receives a local map for a certain level of resolution which is outputted from the gecgraphic information processor 220 and the resolution of the received map is higher than that of an existing map (which means the received map is more elaborate than the existing one), the digital broadcast receiver replaces the existing map with the new one or upgrades the changed part.
- the navigation apparatus first finds out and presents a best place for going to the destination within the map saved in the memory 305 and then, when it arrives at the place, it downloads a map of the region and finds out the best route for the next destination to go the final destination instantly.
- Eg. 4 is a diagram describing a multiplexing process based on the variation of gecgraphic information in the gecgraphic information transceiving system in accordance with an embodiment of the present invention. It shows an example of a carousel where map and gecgraphic information data of an appropriate size for a resolution and version with broadcast signals.
- Each transmitter transmits broadcast signals from the broadcasting station to its broadcasting coverage.
- Eg. 5 is a diagram showing a map segmenting process in the gecgraphic information transceiving system in accordance with an embodiment of the present invention. It presents description on how much area is to be overlapped when the transmitting sites 131 to 133 divide map data of each region which will be multiplexed and transmitted with digital broadcast signals, which are transmitted by itself.
- the digital broadcast receiver receives map data, it stores the map data in the memory 305 as shown in the digital broadcast receiver of Eg. 3 until the map data exceed a proper capacity level, and it stores a map of a new region in the remaining memory area if it moves to a new map area as the vehicle moves. [45] If the stored map data exceed the proper capacity level, the digital broadcast receiver manages the memory 305 by deleting the stored map data for the region where the digital broadcast receiver is located or from those with the lowest usage frequency.
- the margins of the two map segments should be overlapped in order to make no empty space appear on the map received by the receiver.
- the value can be determined as a multiplication of the maximum speed of the mobile station (i.e., vehicle) by a time consumed to receive all map data of the lowest resolution in the region. By doing so, map data of the region can be received before the receiver or the receiving vehicle enters the new region.
- the time for receiving map data from a transmitting site goes in proportion to the size (resolution or the amount of information) of the map data for the region.
- Eg. 6 is a long-distance navigation process in the gecgraphic information transceiving system in accordance with an embodiment of the present invention.
- the current location becomes a departure point and a destination point is determined by searching the name of the destination which is stored in the memory 305 in advance or by searching the area near the destination point. If the destination point is in the map stored in the memory 305, the navigation service is provided by using the map. Otherwise, if the destination point is a far-away place, the best place of the map for going to the destination point is presented. Then, when the vehicle arrives in the place, it downloads a map of the region and finds out the best route for the next destination to go to the final destination instantly.
- Eg. 7 is a flowchart describing a gecgraphic information transceiving method using a digital broadcasting network in accordance with an embodiment of the present invention.
- step S701 real-time gecgraphic information and local gecgraphic information are collected from the central or local gecgraphic information collecting network.
- the collected information is processed into entire region information and gecgraphic information for several resolutions and, at step S703, the processed information to the broadcasting station.
- step S704 the data transmitted to the broadcasting station are multiplexed in conformity to the output broadcast signals of each transmitting site.
- step S705 the data are encrypted during multiplexing and whether to allow a user to use the information is determined based on whether the receiver is a subscriber and what subscriber class the receiver belongs to.
- step S706 if the transmitting site transmits the signals from the broadcasting station to the receiver, at step S707, the receiver performs synchronization, demodulation, demultiplexing and decoding.
- step S708 the receiver performs decryption by determining whether to allow the use of the data based on whether the receiver is a subscriber and what subscriber class it belongs to during decoding, and stores the decrypted data in the memory.
- the stored data are applied to the navigation service.
- the method of the present invention can be embodied in the form of a program and stored in a computer-readable recording medium, such as CD- ROM, RAM, ROM, floppy disks, hard disks, magnetoOptical disks and the like. Since this process can be easily performed by those of ordinary skill in the art, it will not be described herein.
- the technolcgy of the present invention can overcome a problem of performing map upgrade in the receiver whenever there are data to be upgraded by segmenting new map data on the map and gecgraphic information of a nation or a local area, on which the navigation service is provided, into an appropriate size based on the number and distance of digital broadcast transmitting sites and transmitting the segment map data through transmitters. Since the receiving part receives the new map data through a digital broadcast receiver and uses the updated map by combining map segments. Therefore, the memory capacity of the receiver can be reduced or the amount of information to be transmitted to the receiver can be increased.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP04774595A EP1698177A4 (en) | 2003-12-27 | 2004-09-14 | Geographic information transceiving system and method thereof |
US10/584,839 US7848878B2 (en) | 2003-12-27 | 2004-09-14 | Geographic information transceiving system and method thereof |
Applications Claiming Priority (4)
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KR10-2003-0098407 | 2003-12-27 | ||
KR20030098407 | 2003-12-27 | ||
KR10-2004-0037919 | 2004-05-27 | ||
KR1020040037919A KR100742610B1 (en) | 2003-12-27 | 2004-05-27 | Geographic and traffic information providing system and its method using digital broadcasting network |
Publications (1)
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WO2005064942A1 true WO2005064942A1 (en) | 2005-07-14 |
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PCT/KR2004/002336 WO2005064942A1 (en) | 2003-12-27 | 2004-09-14 | Geographic information transceiving system and method thereof |
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US (1) | US7848878B2 (en) |
EP (1) | EP1698177A4 (en) |
WO (1) | WO2005064942A1 (en) |
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Also Published As
Publication number | Publication date |
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EP1698177A4 (en) | 2010-07-14 |
US7848878B2 (en) | 2010-12-07 |
US20080095096A1 (en) | 2008-04-24 |
EP1698177A1 (en) | 2006-09-06 |
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