Motor vehicles – With means for controlling operation responsive to... – Radiation – force – or waves reflected from external object or...
Reexamination Certificate
2005-05-24
2005-05-24
Fischmann, Bryan (Department: 3618)
Motor vehicles
With means for controlling operation responsive to...
Radiation, force, or waves reflected from external object or...
C342S070000
Reexamination Certificate
active
06896082
ABSTRACT:
A road surface detection apparatus capable of detecting an upward/downward displacement in radar axis when detecting a road surface by projecting a radar beam. The apparatus projects a radar beam signal onto the road surface on which the radar-equipped vehicle is traveling, and receives a signal containing a reflected signal of the radar beam signal. Then, the apparatus compares the level of the road surface reflected signal contained in the received signal with a predetermined reference level and, if the result of the comparison lies outside a predefined range, then the apparatus determines that the axis defining the projection direction of the radar beam signal is displaced.
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Asanuma Hisateru
Kishida Masayuki
Christie Parker and Hale, LLP
Fischmann Bryan
Fujitsu Ten Limited
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