METHOD AND APPARATUS FOR PROVIDNG AND USING PUBLIC TRANSPORTATION INFORMATION

• US 20100259421A1
• Filed: 06/07/2007
• Published: 10/14/2010
• Est. Priority Date: 06/08/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Young In, Seo, Chu Hyun, Kim, Seung Won, Park, Sang O
• Granted Patent: US 8,773,290 B2
• Time in Patent Office: Days
• US Class Current: 340/994
• CPC Class Codes: G08G 1/123 indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, tramstransmission of navigation instructions to vehicles G08G1/0968

Abstract

Disclosed herein is a method and apparatus for providing traffic information of public transportation means, such as a bus, and utilizing the provided information. A method of encoding public traffic information according to the present invention creates an identifier of bus information system, an ID of bus route, and location information of each in-service bus pertaining to the bus route. The location information is expressed in a stop ID that is uniquely allocated to all of bus stops within coverage of BSI (Bus Service Information) service. The created information is organized to status information that is in turn incorporated into a transfer message. A sequence of transfer messages, each being constructed as described above, is wirelessly transmitted.

Claims

1. A method for encoding public transportation information, comprising:

creating an information system identifier for identifying a bus information system and identification information for a bus route;

creating location information for each bus running on the bus route, the location information being expressed in an identifier that is uniquely assigned to bus stops located within an area in which the public transportation information is serviced so that a single bus stop can be uniquely identified by identifier thereof; and

creating a component containing the information created in the above creating steps.

2. The method of claim 1, further comprising:

creating status information containing the created component and creating message management information including creation time of the status information.

3. The method of claim 2, further comprising:

organizing transfer messages each of which includes the created message management information and the status information and transmitting each of the organized transfer messages sequentially.

4. The method of claim 2, further comprising:

creating another component containing information on a country to which the information system identifier applies and incorporating the another component into the status information.

5. The method of claim 1, wherein the location information creating step further creates information on number of buses running on the bus route.

6. The method of claim 1, wherein the component creating step writes 0x81 in the created component as identifier of the created component.

7. The method of claim 1, wherein the location information creating step further creates, in association with the location information of the each bus, predicted time required for the each bus to arrive at a corresponding next bus stop.

8. An apparatus for encoding public transportation information, comprising:

an encoder for creating an information system identifier for identifying a bus information system and identification information for a bus route and for creating location information for each bus running on the bus route, the location information being expressed in an identifier that is uniquely assigned to bus stops located within an area in which the public transportation information is serviced so that a single bus stop can be uniquely identified by identifier thereof; and

a frame organizer for organizing frames by adding error correction data to data including the information created by the encoder.

9. The apparatus of claim 8, wherein the encoder further creates information on number of buses running on the bus route.

10. The apparatus of claim 8, wherein the encoder further creates, in association with the location information of the each bus, predicted time required for the each bus to arrive at a corresponding next bus stop.

11. A method for decoding public transportation information, comprising:

extracting status information from a received signal; and

extracting an information system identifier for identifying a bus information system and an identifier for a bus route from a component contained in the extracted status information and extracting from the component location information for each bus running on the bus route, the location information being expressed in an identifier that is uniquely assigned to bus stops located within an area in which the public transportation information is serviced so that a single bus stop can be uniquely identified by identifier thereof.

12. The method of claim 11, further comprising:

extracting message management information including creation time of the status information from the received signal.

13. The method of claim 12, wherein each of transfer messages demodulated from the received signal includes the message management information and the status information.

14. The method of claim 11, wherein information extracted from the status information is interpreted based on the extracted information system identifier.

15. The method of claim 11, wherein the component further includes information on number of buses running on the bus route.

16. The method of claim 11, wherein the component has an identifier set to 0x81.

17. The method of claim 11, wherein the step extracting the component further extracts, from the component, predicted time required for the each bus to arrive at a corresponding next bus stop.

18. An apparatus for decoding public transportation information, comprising:

a demodulator for demodulating a received signal to output a sequence of messages carrying public transportation information;

a decoder for extracting status information from each of the messages and extracting from the status information an information system identifier for identifying a bus information system, an identifier for a bus route, and public transportation information including location information for each bus running on the bus route, the location information being expressed in an identifier that is uniquely assigned to bus stops located within an area in which the public transportation information is serviced so that a single bus stop can be uniquely identified by identifier thereof; and

a controller for storing the extracted information in storage means and outputting the stored information or a part of the stored information via an output unit depending on a given condition.

19. The apparatus of claim 18, further comprising a location detector for detecting information on current location, wherein the controller stores static information of the extracted information in the storage means and stores dynamic information regarding only bus stops located near the current location in the storage means.

20. The apparatus of claim 18, wherein the decoder further extracts, from the status information, information on number of buses running on the bus route.

21. The apparatus of claim 18, wherein the controller, responsive to an input for selecting a bus route, reads information on a plurality of bus routes including the selected bus route from the storage means, outputs a list of bus routes via the output unit, reads from the storage means information on current location of at least one bus running on a bus route selected from the list, and outputs a mark indicative of the current location via the output unit.

22. The apparatus of claim 18, wherein the controller, responsive to an input for selecting a bus route, reads from the storage means information on a bus route that matches the selected bus route, reads from the storage means information on current location of at least one bus running on the bus route, and outputs a mark indicative of the current location via the output unit.

23. The apparatus of claim 18, wherein the controller reads information on bus stops from the storage means, outputs a list of bus stops via the output unit, and if a bus route is selected from the list, reads from the storage means information on current location of at least one bus running on the selected bus route, and outputs a mark indicative of the current location via the output unit.

24. The apparatus of claim 18, wherein the pair of identifiers is the pair of identifiers assigned to two consecutive bus stops located on a bus route.

25. The apparatus of claim 18, wherein the decoder decodes the extracted public transportation information based on the extracted information system identifier.