Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Patent
1996-04-19
2000-05-09
Chin, Gary
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
701208, 701214, 701221, 340988, 340995, G06F16500
Patent
active
06061627&
ABSTRACT:
A microprocessor 214 obtains a vehicle travelled distance by multiplying the number of pulses by a distance factor R, the number of pulses having been outputted from a vehicle speed sensor 203 and having been counted by a counter 216. In addition, the microprocessor 214 estimates a current position on a road according to map data read out from a CD-ROM 205 via a driver 206, measured data from an angular velocity sensor 201 and a direction sensor 202 via A/D converters 209 and 210, and the obtained vehicle travelled distance. The road direction on the estimated current position and the vehicle direction obtained from the measured data of the angular velocity sensor 201 and the direction sensor 202, are compared, and in accordance with the angular difference therebetween and the information whether the driving road is a left turn or a right turn, it is determined whether the estimated current position is ahead or behind the actual position. With the result, the distance factor R can be dynamically modified. Therefore, it is possible to adequately correct the distance factor which is used for obtaining a travelled distance.
REFERENCES:
patent: 4796191 (1989-01-01), Honey et al.
patent: 4807127 (1989-02-01), Tenmoku et al.
patent: 4878170 (1989-10-01), Zeevi
patent: 4937752 (1990-06-01), Nanba et al.
patent: 5043902 (1991-08-01), Yokoyama et al.
patent: 5130709 (1992-07-01), Toyama et al.
patent: 5292184 (1994-03-01), Takata
patent: 5416477 (1995-05-01), Shibata
patent: 5539647 (1996-07-01), Shibata et al.
patent: 5552990 (1996-09-01), Ihara et al.
Chin Gary
Xanavi Informatics Corporation
LandOfFree
Current position calculating system for correcting a distance fa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Current position calculating system for correcting a distance fa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current position calculating system for correcting a distance fa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1074368