Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 15, 2011
Patent Application Number
12396704
Date Filed
March 3, 2009
Patent Primary Examiner
Patent abstract
An obstacle detecting system for a vehicle detects an obstacle by transmitting a transmitting wave and receiving a receiving wave, which is a reflection of the transmitting wave by the obstacle. The system calculates a distance to the obstacle. The system varies directivity of the transmitting wave in accordance with the calculated distance. The directivity is lowered when the calculated distance is less than a predetermined reference distance, than when the calculated distance is greater than the predetermined reference distance.
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