System for providing information and an apparatus which receives the information

• US 6,744,745 B1
• Filed: 10/26/2000
• Issued: 06/01/2004
• Est. Priority Date: 12/03/1999
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Fukui, Satoru
• Primary Examiner(s): Olms, Douglas
• Assistant Examiner(s): Phunkulh, Bob A.
• Application Number:
  US09/696,022
• Time in Patent Office: 1,314 Days
• Field of Search: 370/315, 370/316, 370/319, 370/320, 370/329, 370/335, 370/342, 370/442, 455/427, 455/430, 455/11.1, 455/12.1, 455/13.1, 455/13.2, 455/13.4
• US Class Current: 370/320
• CPC Class Codes: G08G 1/092 Coding or decoding of the information
• CPC Class Codes: G08G 1/0962 having an indicator mounted inside the vehicle, e.g. giving voice messages

Abstract

Information transmitting station transmits code division multiplexed information to many mobile units via a satellite. An information receiving apparatus is mounted on each automobile running on the ground and it receives the multiplexed information. In this information receiving apparatus, a self-position calculating section detects the position of the automobile using GPS, a PN code setting section retrieves a PN code corresponding to the position of the automobile from a table containing the correspondence of the two, and an information receiving section extracts the information related to the position of the automobile from the multiplexed information based on the retrieved PN code.

Claims

1. An information providing system comprising:

a transmitting station which transmits multiplex information having a plurality of contents information to be provided to a mobile unit multiplexed, towards the ground via a relay unit provided in the sky; and

an information receiving apparatus, mounted on said mobile unit, which receives the multiplex information,

wherein said information receiving apparatus having,

a receiving unit which receives the multiplex information;

a self-position detecting unit which detects a self-position of said mobile unit;

a memory unit which stores a table that represents a relationship between extraction information that is used for extracting contents information from the multiplex information and position information relating to a position at which said mobile unit can exist;

a retrieving unit which retrieves the position information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the position information; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit, based on the extraction information retrieved from said retrieving unit.

2. An information providing system comprising:

a transmitting station which transmits multiplex information having a plurality of contents information to be provided to a mobile unit multiplexed, towards the ground via a relay unit provided in the sky; and

an information receiving apparatus, mounted on said mobile unit, which receives the multiplex information,

wherein said information receiving apparatus having,

a receiving unit which receives the multiplex information;

a self-position detecting unit which detects a self-position of said mobile unit;

a memory unit which stores a table that represent a relationship between extraction information that is used for extracting contents information from the multiplex information and area information relating to an area in which said mobile unit can exist;

a retrieving unit which retrieves the area information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the area information; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit, based on the extraction information retrieved from said retrieving unit.

3. An information providing system comprising:

a transmitting station which transmits multiplex information having a plurality of contents information to be provided to a mobile unit multiplexed, towards the ground via a relay unit provided in the sky;

an information receiving apparatus, mounted on said mobile unit, which receives the multiplex information; and

a retrieving station which retrieves extraction information that is used for extracting contents information from the multiplex information, wherein

wherein said information receiving apparatus having,

a receiving unit which receives the multiplex information;

a self-position detecting unit which detects a self-position of said mobile unit;

a transmitting/receiving unit which transmits information relating to the self-position to said retrieving station and receives the extraction information transmitted from said retrieving station; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit based on the extraction information, and

said retrieving station having,

a retrieving station-side receiving unit which receives information relating to the self-position that has been transmitted from said transmitting/receiving unit;

a memory unit for storing a table that represents a relationship between the extraction information and position information relating to a position at which said mobile unit can exist;

a retrieving unit which retrieves the position information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the position information; and

a retrieving station-side transmitting unit which transmits the extraction information to said transmitting/receiving unit.

4. An information providing system comprising:

a transmitting station which transmits multiplex information having a plurality of contents information to be provided to a mobile unit multiplexed, towards the ground via a relay unit provided in the sky;

an information receiving apparatus, mounted on said mobile unit, which receives the multiplex information; and

a retrieving station which retrieves extraction information that is used for extracting contents information from the multiplex information, wherein

wherein said information receiving apparatus having,

a receiving unit which receives the multiplex information;

a self -position detecting unit which detects a self -position of said mobile unit;

a transmitting/receiving unit which transmits information relating to the self-position to said retrieving station and receives the extraction information transmitted from said retrieving station; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit based on the extraction information, and

said retrieving station having,

a retrieving station-side receiving unit which receives information relating to the self-position that has been transmitted from said transmitting/receiving unit;

a memory unit which stores a table that represents a relationship between the extraction information and area information relating to an area in which said mobile unit can exist;

a retrieving unit which retrieves the area information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the area information; and

a retrieving station-side transmitting unit which transmits the extraction information to said transmitting/receiving unit.

5. An information receiving apparatus comprising:

a receiving unit, mounted on a mobile unit, which receives multiplex information that has been transmitted to the ground via a relay unit provided in the sky and that has a plurality of contents information multiplexed;

a self-position detecting unit which detects a self-position of said mobile unit;

a memory unit which stores a table that represents a relationship between extraction information that is used for extracting contents information from the multiplex information and position information relating to a position at which said mobile unit can exist;

a retrieving unit which retrieves the position information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the position information; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit, based on the extraction information retrieved from said retrieving unit.

6. The information receiving apparatus according to claim 5, wherein the multiplex information has been multiplexed by a code division multiplex system or a time division multiplex system.

7. The information receiving apparatus according to claim 5, wherein the multiplex information has been multiplexed by a code division multiple access system or a time division multiple access system.

8. An information receiving apparatus comprising:

a receiving unit, mounted on a mobile unit, which receives multiplex information that has been transmitted to the ground via a relay unit provided in the sky and that has a plurality of contents information multiplexed;

a self-position detecting unit which detects a self-position of said mobile unit;

a memory unit which stores a table that represents a relationship between extraction information that is used for extracting contents information from the multiplex information and area information relating to an area in which said mobile unit can exist;

a retrieving unit which retrieves the area information corresponding to the self-position from the table, and then retrieves the extraction information corresponding to the area information; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit, based on the extraction information retrieved from said retrieving unit.

9. An information receiving apparatus comprising:

a receiving unit, mounted on a mobile unit, which receives multiplex information that has been transmitted to the ground via a relay unit provided in the sky and that has a plurality of contents information multiplexed;

a collecting unit which collects mobile unit associated information that relates to said mobile unit;

a memory unit which stores a table that represents a relationship between extraction information that is used for extracting contents information from the multiplex information and said mobile unit associated information;

a retrieving unit which retrieves the extraction information corresponding to said mobile unit associated information from the table, using the mobile unit associated information collected from said collecting unit as a key; and

an extracting unit which extracts the contents information from the multiplex information that has been received by said receiving unit, based on the extraction information retrieved from said retrieving unit.

10. The information receiving apparatus according to claim 9, wherein the mobile unit associated information is the moving speed of said mobile unit.