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US6347278B2
Expired / Lapsed
US
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Mobile terminal and a server for navigation system
Assignee: Mitsubishi Electric Corp
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Filing: 2001-01-25
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Granted: 2002-02-12
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Expires: 2021-01-25
Abstract
Abstract A navigation system in which a mobile terminal side 101 is not equipped with a CD-ROM for storing map database 105 , but implements an on-demand navigation function by sharing the one provided within a server 102 . By limiting the communications between the mobile terminal 101 and the server 102 only to the beginning of the route guidance and the moment at which the mobile terminal has deviated from the route, the communication traffic can be reduced, minimizing thereby the communication cost and the total power consumption as a whole, and further even when the mobile terminal 101 has deviated from the guide route, the system can readily provide the user with information by which he can reach his destination through communications with the server, and enabling also an indication of the name of the road to be taken at every crossings.
Inventors
- 👤 Takashi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0968; G08G1/096805; G08G1/096811; G01; G01C; G01C21/00; G01C21/26; G01C21/34; G01C21/3407; G01C21/3415; G01C21/36; G01C21/3605; G01C21/3611; G08G1/096855; G08G1/096861; G08G1/096872; G08G1/096877; G08G1/096883; G08G1/096894
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
238 words
A mobile terminal in a navigation system, which carries out communications by way of a communication channel and provides a route guidance for users on the basis of the data obtained by the communications, said mobile terminal comprising: location detection means for detecting the location of the mobile terminal itself, receiving means for receiving a first recommendable traveling route data transmitted by way of said communication channel as a first information, said route data covering a first condition based on the starting point data and the destination data of itself, comparing means for comparing said first recommendable traveling route data with a location detected by said location detection means, indication means for indicating a direction to which the user should move on the basis of the result of the comparison made by said comparing means, and new route requesting means for transmitting a request for a new second recommendable traveling route data to said communication channel on the basis of the result of the comparison, said second recommendable traveling route data covering a second condition based on the location of the mobile terminal itself detected by said location detection means and said destination data, wherein said receiving means receives said new second recommendable traveling route data transmitted by way of said communication channel as a second information, and said comparing means also compares said second recommendable traveling route data with a location detected by said location detection means.
Claim 2
Dependent Claim
238 words
A mobile terminal in a navigation system, which carries out communications by way of a communication channel and provides a route guidance for users on the basis of the data obtained by the communications, said mobile terminal comprising: location detection means for detecting the location of the mobile terminal itself, receiving means for receiving a first recommendable traveling route data transmitted by way of said communication channel as a first information, said route data covering a first condition based on the starting point data and the destination data of itself, comparing means for comparing said first recommendable traveling route data with a location detected by said location detection means, indication means for indicating a direction to which the user should move on the basis of the result of the comparison made by said comparing means, and new route requesting means for transmitting a request for a new second recommendable traveling route data to said communication channel on the basis of the result of the comparison, said second recommendable traveling route data covering a second condition based on the location of the mobile terminal itself detected by said location detection means and said destination data, wherein said receiving means receives said new second recommendable traveling route data transmitted by way of said communication channel as a second information, and said comparing means also compares said second recommendable traveling route data with a location detected by said location detection means.
Claim 3
Dependent Claim
34 words
The mobile terminal in a navigation system according to claim 1 further comprising transmission means for transmitting the location information and the destination information of itself to the communication channel as a first condition.
Claim 4
Dependent Claim
61 words
The mobile terminal in a navigation system according to claim 1 further comprising return indication means, which, in the case where a deviation of its location from the recommendable traveling route is detected on the basis of the result of the comparison conducted in said comparing means, indicates the direction in which the nearest recommendable traveling route resides to the user.
Claim 5
Dependent Claim
62 words
The mobile terminal in a navigation system according to claim 1 further comprising return indication means, which, in the case where a deviation of its location from the recommendable traveling route is detected on the basis of the result of the comparison conducted in said comparing means, indicates the direction reverse to the recommendable traveling route after the deviation to the user.
Claim 6
Dependent Claim
121 words
The mobile terminal in a navigation system according to claim 1 further comprising; storage means for storing the data received through the communication channel into a memory, processing means for sequentially processing the data received through said communication channel, memory monitoring means for monitoring as to whether or not the summed amount of the memory area which has been made available after the completion of processing conducted by said processing means and unused memory area is substantially great, and continued data requesting means, which, in the case where the result of the monitoring is substantially great and it is indicated that the received data contains a continued data, transmits a request for transmission of said continued data to said communication channel.
Claim 7
Dependent Claim
45 words
The mobile terminal in a navigation system according to claim 5 further comprising data amount informing means for transmitting a notification of the amount of data storable in the memory to the communication channel, in advance of receiving data by way of the communication channel.
Claim 8
Dependent Claim
58 words
The mobile terminal in a navigation system according to claim 5 further comprising interruption requesting means, which, in the case where the result of the monitoring conducted by said memory monitoring means has become small during the data reception by way of the communication channel, transmits a request for interruption of the data transmission to the communication channel.
Claim 9
Dependent Claim
147 words
A server in a navigation system, which comprises a map database, and transmits data for providing a route guidance for users on the basis of said map database by the communications conducted by way of a communication channel, said sever comprising: request receiving means for receiving the starting point information and the destination information of itself transmitted by way of said communication channel as a condition, route extracting means for extracting a recommendable traveling route by referring to said map database in accordance with the condition received by said request receiving means, transmission means for transmitting the recommendable traveling route extracted by said route extracting means by way of said communication channel, and destination setting information transmission means for transmitting destination setting information to said communication channel in the order of upper to lower layers, in response to the request received by way of said communication channel.
Claim 10
Dependent Claim
147 words
A server in a navigation system, which comprises a map database, and transmits data for providing a route guidance for users on the basis of said map database by the communications conducted by way of a communication channel, said sever comprising: request receiving means for receiving the starting point information and the destination information of itself transmitted by way of said communication channel as a condition, route extracting means for extracting a recommendable traveling route by referring to said map database in accordance with the condition received by said request receiving means, transmission means for transmitting the recommendable traveling route extracted by said route extracting means by way of said communication channel, and destination setting information transmission means for transmitting destination setting information to said communication channel in the order of upper to lower layers, in response to the request received by way of said communication channel.
Claim 11
Dependent Claim
113 words
The server in a navigation system according to claim 8 , further comprising: condition receiving means for receiving the condition for data transmission and a data-storage use memory amount data, both transmitted through the communication channel, processing means for carrying out processing on the basis of the condition for data transmission, transmission means for transmitting the result of the processing conducted by said processing means, data amount limiting means for limiting the amount of data transmitted from said transmission means to the level below said data storage-use memory amount data, and continued information adding means for adding the information indicating that there exists continued data to the data transmitted to said communication channel.
Claim 12
Dependent Claim
21 words
The mobile terminal in a navigation system according to claim 1 further comprising a wireless telephone line as the communication channel.
Claim 13
Dependent Claim
20 words
The server in a navigation system according to claim 8 further comprising a wireless telephone line as the communication channel.
Claim 14
Dependent Claim
118 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) detecting a position within recorded map data; b) setting a destination location; c) receiving traveling route data from a communications channel based on starting point data and destination point data, wherein the route data defines a travel route within said map data; d) comparing the position of step a) to the traveling route data; and e) indicating a direction to which the user should move on the basis of the result of the said comparison means.
Claim 15
Dependent Claim
118 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) detecting a position within recorded map data; b) setting a destination location; c) receiving traveling route data from a communications channel based on starting point data and destination point data, wherein the route data defines a travel route within said map data; d) comparing the position of step a) to the traveling route data; and e) indicating a direction to which the user should move on the basis of the result of the said comparison means.
Claim 16
Dependent Claim
114 words
A position responsive route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, comprising: a detector detecting a position within recorded map data; an input enabling user setting a destination location; a receiver receiving traveling route data from a communications channel based on starting point data and destination point data, wherein the route data defines a travel route within said map data; a processor comparing the position detected by the detector to the traveling route data received by the receiver; and a display indicating a direction to which the user should move on the basis of the result of the said comparison means.
Claim 17
Dependent Claim
114 words
A position responsive route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, comprising: a detector detecting a position within recorded map data; an input enabling user setting a destination location; a receiver receiving traveling route data from a communications channel based on starting point data and destination point data, wherein the route data defines a travel route within said map data; a processor comparing the position detected by the detector to the traveling route data received by the receiver; and a display indicating a direction to which the user should move on the basis of the result of the said comparison means.
Claim 18
Dependent Claim
86 words
A position responsive route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel comprising: a receiver downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; a computer computing a current location with the route data to determine a position with respect to the route ; and a route display system displaying directions to a user based on a result from the computer.
Claim 19
Dependent Claim
86 words
A position responsive route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel comprising: a receiver downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; a computer computing a current location with the route data to determine a position with respect to the route ; and a route display system displaying directions to a user based on a result from the computer.
Claim 20
Dependent Claim
119 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; b) computing a current location with the route data to determine a position with respect to the route; c) providing directions to the user based on a result of step b); and d) when the current position falls outside the map data downloaded in said step a), updating the map data around the current position.
Claim 21
Dependent Claim
119 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; b) computing a current location with the route data to determine a position with respect to the route; c) providing directions to the user based on a result of step b); and d) when the current position falls outside the map data downloaded in said step a), updating the map data around the current position.
Claim 22
Dependent Claim
128 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; b) computing a current location with the route data to determine a position with respect to the route; c) providing directions to the user based on a result of step b); and d) when the current position varies from the selected route, updating the route and downloading additional map data juxtaposed to the updated route and not already present in the display system memory.
Claim 23
Dependent Claim
128 words
In a position response route display system wherein a selected route and associated map data are downloaded from a remote location over a communications channel, a method of displaying a desired route and map data juxtaposed to the selected route, comprising: a) downloading data representative of the selected route and map data associated therewith to a route display system memory from the remote location; b) computing a current location with the route data to determine a position with respect to the route; c) providing directions to the user based on a result of step b); and d) when the current position varies from the selected route, updating the route and downloading additional map data juxtaposed to the updated route and not already present in the display system memory.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-02-11 | 2005-08-13 | 2006-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-11 | 2009-08-13 | 2010-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-11 | 2013-08-13 | 2014-02-12 | $7700.00 | Window Closed / Lapsed |