System and method for recognizing vehicle position on elevated f

Details System and method for recognizing vehicle position on elevated f System and method for recognizing vehicle position on elevated f

1989-11-13

1991-01-01

Chin, Gary

Boots, shoes, and leggings

364449, 73178R, 340988, G06F 1550

Patent

active

049823590

ABSTRACT:
A system and method for recognizing an elevated vehicle running environment are disclosed in which, when a detected vehicle speed exceeds a predetermined speed and is continued for a predetermined time, the system and method determine that a predetermined running condition is satisfied, then, the system and method detect the steering angle of the steering wheel of the vehicle and determine whether the accumulated value of the steering angle data exceeds a predetermined value, if yes, the system and method determine that the vehicle is running on an elevated freeway. Thus the reliability of recognition for elevated running environments can be remarkably improved for vehicular navigation systems.

REFERENCES:
patent: 4442609 (1984-04-01), Senoo
patent: 4642776 (1987-02-01), Matsumoto et al.
patent: 4757455 (1988-07-01), Tsunoda et al.
patent: 4882689 (1989-11-01), Aoki

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