The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1999
Filed:
Dec. 10, 1997
Makoto Takagi, Suntou-gun, JP;
Setsuo Tokoro, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An onboard radar system for a vehicle using the FM-CW method is provided. The radar system includes a mode changer. The mode changer provides a first mode which is suitable to detect a target existing distant from the vehicle. The mode changer also provides a second mode which is suitable to detect a target existing nearby the vehicle. The radar system detects a pair of beat frequencies in the first mode. Further, the radar system detects another pair of beat frequencies in the second mode. The radar system detects a target based on a pair of base beat frequencies which are determined based on an analysis result of both pairs of the beat frequencies.