Patent DE29806830U1 successfully refreshed from Google Patents.
US5155688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle navigation system
Assignee: Mitsubishi Electric Corp
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Filing: 1990-10-18
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Granted: 1992-10-13
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Expires: 2010-10-18
Abstract
Abstract In a vehicle location detecting system having a self-contained type location detecting section for determining the accumulation type location data, a satellite navigation type location detecting section for determining the satellite type location data from satellite navigation data, a synthesizing section calculates synthetic location data from the accumulation type location data and the satellite navigation type location data. An on-road location determining section determines an on-road location of the vehicle in accordance with the synthetic location data and road map data stored in a road map memory. A display sectin displays the on-road location determined by the on-road location determining section.
Inventors
- 👤 Ichiro Tanaka
- 👤 Hiroshi Noda
- 👤 Yo Yoshitoshi
- 👤 Hirofumi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:03
CPC Classifications
G; G01; G01S; G01S19/00; G01S19/38; G01S19/39; G01S19/42; G01S19/48; G01S19/49; G01C; G01C21/00; G01C21/20; G01C21/26; G01C21/28; G01C21/30; G01S19/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
A vehicle location detecting system provided in a vehicle for detecting the location thereof, comprising: self-contained type location detecting means for calculating accumulation-type location data based on motion signals from sensors mounted on said vehicle; satellite navigation type location detecting means for calculating satellite-type location data from satellite location data transmitted by a plurality of satellites constituting a global positioning system (GPS) navigation system; memory means for storing accumulation-type location data calculated by said self-contained type location detecting means; means for selecting accumulation-type location data from said memory means which is closest to said calculated satellite-type location data; synthesizing means for calculating synthetic location data based on the selected accumulation-type location data from said memory means and said calculated satellite-type location data; a road map memory for storing road map data; on-road location detecting means for calculating an on-road location of said vehicle based upon said synthetic location data and said road map data; and display means for displaying the calculated on-road location of said vehicle.
Claim 2
Dependent Claim
166 words
A vehicle location detecting system provided in a vehicle for detecting the location thereof, comprising: self-contained type location detecting means for calculating accumulation-type location data based on motion signals from sensors mounted on said vehicle; satellite navigation type location detecting means for calculating satellite-type location data from satellite location data transmitted by a plurality of satellites constituting a global positioning system (GPS) navigation system; memory means for storing accumulation-type location data calculated by said self-contained type location detecting means; means for selecting accumulation-type location data from said memory means which is closest to said calculated satellite-type location data; synthesizing means for calculating synthetic location data based on the selected accumulation-type location data from said memory means and said calculated satellite-type location data; a road map memory for storing road map data; on-road location detecting means for calculating an on-road location of said vehicle based upon said synthetic location data and said road map data; and display means for displaying the calculated on-road location of said vehicle.
Claim 3
Dependent Claim
30 words
A system according to claim 1, wherein said synthesizing means comprises means for calculating a weighted mean of the accumulation type location data and the satellite navigation type location data.
Claim 4
Dependent Claim
94 words
A system according to claim 1, further comprising: an on-road location data memory for storing on-road location data determined by said on-road location determining means; evaluating means for calculating an evaluation function for each of the on-road location data stored in said on-road location data memory; and selecting means for selecting on-road location data having the highest evaluation function from among the stored on-road location data, and erasing unselected on-road location data from said on-road location data memory; wherein said display means displays the on-road location data that is selected by said selecting means.
Claim 5
Dependent Claim
58 words
A system according to claim 1, wherein said self-contained type location detecting means comprises: travel distance detecting means for detecting a travel distance of the vehicle; direction detection means for detecting a travel direction of the vehicle; and accumulation type location data calculating means for calculating the location of the vehicle from the travel distance and the direction.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |