JPH0171611U - - Google Patents
Info
- Publication number
- JPH0171611U JPH0171611U JP1987166572U JP16657287U JPH0171611U JP H0171611 U JPH0171611 U JP H0171611U JP 1987166572 U JP1987166572 U JP 1987166572U JP 16657287 U JP16657287 U JP 16657287U JP H0171611 U JPH0171611 U JP H0171611U
- Authority
- JP
- Japan
- Prior art keywords
- current location
- location
- estimated current
- actual
- navigation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は、この考案の車載用航法装置の一実施
例を示す回路構成図、第２図は、第１図に示した
中央処理装置の動作を説明するためのフローチヤ
ート、第３図は、従来の車載用航法装置の一例を
示す回路構成図である。
２……方位センサ、３……走行距離センサ、６
……道路地図情報記録媒体、２１……車載用航法
装置、２２……中央処理装置。
FIG. 1 is a circuit configuration diagram showing an embodiment of the in-vehicle navigation system of this invention, FIG. 2 is a flowchart for explaining the operation of the central processing unit shown in FIG. 1, and FIG. , is a circuit configuration diagram showing an example of a conventional vehicle-mounted navigation device. 2... Orientation sensor, 3... Mileage sensor, 6
... road map information recording medium, 21 ... vehicle navigation device, 22 ... central processing unit.
Claims (1)
現在地を推定し、道路地図に合致する位置を推定
現在地として表示する車載用航法装置であつて、
前記道路地図に合致する推定現在地が複数存在す
る場合、その後の推定で現実妥当性が否定される
まで、それぞれの推定現在地を実位置候補として
残すとともに、各実位置候補を暫定推定現在地と
して個別に現在地推定を継続し、その過程で推定
誤差の合計が一定の許容値を越えた候補は、現実
妥当性を欠くものとして淘汰する現在地推定手段
を設けてなる車載用航法装置。 An in-vehicle navigation device that estimates the current location of a vehicle from the outputs of a direction sensor and a mileage sensor, and displays a location that matches a road map as the estimated current location,
If there are multiple estimated current locations that match the road map, each estimated current location is left as an actual location candidate until the actual validity is denied in subsequent estimations, and each actual location candidate is individually assigned as a provisional estimated current location. An in-vehicle navigation device comprising a current location estimation means that continues to estimate the current location and, in the process, eliminates candidates whose total estimation error exceeds a certain tolerance value as having no practical validity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166572U JPH0171611U (en) | 1987-10-30 | 1987-10-30 | |
| US07/263,359 US4964052A (en) | 1987-10-30 | 1988-10-27 | Navigation device for use in a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166572U JPH0171611U (en) | 1987-10-30 | 1987-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171611U true JPH0171611U (en) | 1989-05-12 |
Family
ID=31454074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987166572U Pending JPH0171611U (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171611U (en) |
-
1987
- 1987-10-30 JP JP1987166572U patent/JPH0171611U/ja active Pending
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