US5210540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Global positioning system
Assignee: Pioneer Corp
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Filing: 1992-06-12
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Granted: 1993-05-11
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Expires: 2012-06-12
Abstract
Abstract A global positioning system for positioning a mobile object such as an automobile in a global geometrical region includes a GPS receiver for receiving radio waves from a plurality of satellites and outputting either two-dimensional position data indicative of the present position of the mobile object in a two-dimensional position measurement mode or three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode. An altimeter detects a relative altitude of the mobile object and outputs relative altitude data indicative of the detected relative altitude. A present position output unit calculates present position data indicative of the present position of the mobile object solely based on the data from the GPS receiver while the GPS receiver is operating in the three-dimensional position measurement mode. When the GPS receiver operates in the two-dimensional position measurement mode, the present position output unit calculates present position data indicative of the present position of the mobile object based on the two-dimensional position data and the relative altitude data. The calculated present position data are sent to a display which displays the two-dimensional position of the mobile object and also the altitude data.
Inventors
- 👤 Yutaka Masumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
G; G01; G01S; G01S19/00; G01S19/38; G01S19/39; G01S19/42; G01C; G01C5/00; G01C5/06; G01S19/01; G01S19/13; G01S19/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
A global positioning system for positioning a mobile object in a global geometric region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode, said two-dimensional position data comprising latitude and longitude data; memory means for storing altitude data corresponding to said latitude and longitude data; and calculating means for reading said altitude data from said memory means based on said latitude and longitude data and outputting present position data indicative of the present position of the mobile object when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode.
Claim 2
Dependent Claim
138 words
A global positioning system for positioning a mobile object in a global geometric region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode, said two-dimensional position data comprising latitude and longitude data; memory means for storing altitude data corresponding to said latitude and longitude data; and calculating means for reading said altitude data from said memory means based on said latitude and longitude data and outputting present position data indicative of the present position of the mobile object when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode.
Claim 3
Dependent Claim
15 words
A global positioning system according to claim 1, wherein said memory means is a CD-ROM.
Claim 4
Dependent Claim
190 words
A global positioning system for positioning a mobile object in a global geometrical region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position data indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode; detecting means for detecting a relative altitude of the mobile object and outputting relative altitude data indicative of the detected relative altitude; and calculating means for calculating and outputting present position data indicative of the present position of the mobile object based on said two-dimensional position data in said two-dimensional position measurement mode and said relative altitude data when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode, said calculating means comprising means for calibrating said relative altitude data with altitude data of the three-dimensional position data previously output by said receiving means in said three-dimensional position measurement mode when said receiving means switches from said three-dimensional position measurement mode to said two-dimensional position measurement mode.
Claim 5
Dependent Claim
190 words
A global positioning system for positioning a mobile object in a global geometrical region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position data indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode; detecting means for detecting a relative altitude of the mobile object and outputting relative altitude data indicative of the detected relative altitude; and calculating means for calculating and outputting present position data indicative of the present position of the mobile object based on said two-dimensional position data in said two-dimensional position measurement mode and said relative altitude data when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode, said calculating means comprising means for calibrating said relative altitude data with altitude data of the three-dimensional position data previously output by said receiving means in said three-dimensional position measurement mode when said receiving means switches from said three-dimensional position measurement mode to said two-dimensional position measurement mode.
Claim 6
Dependent Claim
18 words
A global positioning system according to claim 3, wherein said detecting means is comprised of an air-pressure altimeter.
Claim 7
Dependent Claim
44 words
A global positioning system according to claim 3, wherein said calculating means includes mode detecting means for detecting whether said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode or the three-dimensional position data in the three-dimensional position measurement mode.
Claim 8
Dependent Claim
18 words
A global positioning system according to claim 5, wherein said detecting means is comprised of an air-pressure altimeter.
Claim 9
Dependent Claim
200 words
A global positioning system for positioning a mobile object in a global geometrical region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position data indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode; detecting means for detecting a relative altitude of the mobile object and outputting relative altitude data indicative of the detected relative altitude; and calculating means for calculating and outputting present position data indicative of the present position of the mobile object based on said two-dimensional position data in said two-dimensional position measurement mode and said relative altitude data when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode, said calculating means comprising means for calibrating said relative altitude data with altitude data of the three-dimensional position data previously output by said receiving means in said three-dimensional position measurement mode, at all times with predetermined time intervals when said receiving means outputs the three-dimensional position data in said three-dimensional position data in said three-dimensional position measurement mode.
Claim 10
Dependent Claim
200 words
A global positioning system for positioning a mobile object in a global geometrical region, comprising: receiving means for receiving radio waves from a plurality of satellites and outputting one of (1) two-dimensional position data indicative of the present position of the mobile object in a two-dimensional position measurement mode and (2) three-dimensional position data indicative of the present position of the mobile object in a three-dimensional position measurement mode; detecting means for detecting a relative altitude of the mobile object and outputting relative altitude data indicative of the detected relative altitude; and calculating means for calculating and outputting present position data indicative of the present position of the mobile object based on said two-dimensional position data in said two-dimensional position measurement mode and said relative altitude data when said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode, said calculating means comprising means for calibrating said relative altitude data with altitude data of the three-dimensional position data previously output by said receiving means in said three-dimensional position measurement mode, at all times with predetermined time intervals when said receiving means outputs the three-dimensional position data in said three-dimensional position data in said three-dimensional position measurement mode.
Claim 11
Dependent Claim
18 words
A global positioning system according to claim 7, wherein said detecting means is comprises of an air-pressure altimeter.
Claim 12
Dependent Claim
44 words
A global positioning system according to claim 7, wherein said calculating means includes mode detecting means for detecting whether said receiving means outputs the two-dimensional position data in the two-dimensional position measurement mode or the three-dimensional position data in the three-dimensional position measurement mode.
Claim 13
Dependent Claim
18 words
A global positioning system according to claim 9, wherein said detecting means is comprised of an air-pressure altimeter.
References Cited (Backward Citations)
US4731613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |