Patent Number: 6,311,121

Title: Vehicle running control apparatus, vehicle running control method, and computer program product having the method stored therein

Abstract: In a vehicle running control apparatus and method, the change of a difference in frequency between an electromagnetic wave signal transmitted from a vehicle and an electromagnetic wave signal reflected from an object is detected. Information inclusive of a distance between the object and the vehicle and a relative speed of one of the object and the vehicle to the other is generated on the basis of the change in frequency difference. A desired speed is generated on the basis of the generated information and information of the running of the vehicle so that the change in frequency difference is generated. A signal for control of the speed of the vehicle is generated on the basis of the desired speed.

Inventors: Kuragaki; Satoru (Hitachi, JP), Kayano; Mitsuo (Hitachi, JP), Minowa; Toshimichi (Mito, JP), Kuroda; Hiroshi (Hitachi, JP), Endo; Yoshinori (Mito, JP), Nakamura; Kozo (Hitachiota, JP), Takano; Kazuaki (Mito, JP)

Assignee: Hitachi, Ltd.

International Classification: B60K 31/00 (20060101); G01S 13/00 (20060101); G01S 13/58 (20060101); G06F 007/00 (); B60T 007/12 (); G05D 001/00 ()

Expiration Date: 10/30/2018