Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Reexamination Certificate
2005-04-19
2005-04-19
Lobo, Ian J. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
C342S146000, C701S301000, C340S435000
Reexamination Certificate
active
06882303
ABSTRACT:
An obstacle detection system includes a laser radar sensor that emits laser beams for scanning a two-dimensional detection area ahead of a vehicle and receives reflected beams in a form of reflecting dots representing the obstacle such as a preceding vehicle. To effectively detect a preceding vehicle traveling on a curved road, a reference angular direction in which the preceding vehicle is most probably located is set based on a traveling speed of the own vehicle and a calculated radius of the curved road. The reflecting dots are selected from those located closer to the reference angular direction until they reach a predetermined number, thereby forming a target model. The preceding vehicle is detected based on the target model.
REFERENCES:
patent: 6249243 (2001-06-01), Takagi
patent: 6518916 (2003-02-01), Ashihara et al.
patent: 6593873 (2003-07-01), Samukawa et al.
patent: A-2002-40139 (2002-02-01), None
Natsume Tsutomu
Nozawa Toyohito
Ohkata Hiroshi
Samukawa Yoshie
Denso Corporation
Lobo Ian J.
Posz Law Group , PLC
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