Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2007-07-24
2007-07-24
Black, Thomas (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
C701S001000, C701S036000, C701S073000, C702S033000, C702S145000
Reexamination Certificate
active
10702492
ABSTRACT:
A tire-generated sound detection sensor detects a tire-generated sound that is generated from a tire while the vehicle is running. A wheel rotation sensor detects a wheel rotation speed. A preprocessor calculates feature quantities corresponding to a road surface state and tire-generated sound sources. A feature vector generator generates a feature vector having, as components, the feature quantities calculated by the preprocessor and the detected wheel rotation speed. A judgment processor estimates a state of a road surface on which the vehicle is running on the basis of the feature vector generated by the feature vector generator and feature vectors that are stored in a judgment map memory so as to be correlated with a plurality of road surface states, respectively, and each of which corresponds to a road surface state and tire-generated sound sources.
REFERENCES:
patent: 5521594 (1996-05-01), Fukushima
patent: 5586028 (1996-12-01), Sekine et al.
patent: 5852243 (1998-12-01), Chang et al.
patent: 5932801 (1999-08-01), Akishita et al.
patent: 6954146 (2005-10-01), Bhagavathula et al.
patent: 03-110408 (1991-05-01), None
patent: 8-298613 (1996-11-01), None
patent: 11-211659 (1999-08-01), None
patent: 2001-73317 (2001-03-01), None
patent: 2002-160598 (2002-06-01), None
Asami Shu
Asano Katsuhiro
Sugai Masaru
Umeno Takaji
Watanabe Yoshitoshi
Black Thomas
Kabushiki Kaisha Toyota Chuo Kenkyusho
Weiskopf Marie A
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