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:
Jan. 03, 2012
Filed:
Jul. 28, 2009
Mitsuyasu Matsuura, Chiryu, JP;
Toshiki Isogai, Nagoya, JP;
Ayako Okamoto, Nishio, JP;
Hiromi Ariyoshi, Kariya, JP;
Yasuyuki Okuda, Aichi-gun, JP;
Mitsuyasu Matsuura, Chiryu, JP;
Toshiki Isogai, Nagoya, JP;
Ayako Okamoto, Nishio, JP;
Hiromi Ariyoshi, Kariya, JP;
Yasuyuki Okuda, Aichi-gun, JP;
DENSO CORPORATION, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
A ultrasonic device detecting a direction to an object includes: a transmitting element of a ultrasonic wave; first and second receiving elements; a diffraction wave phase detector; an initial phase memory for an initial phase of a diffraction wave; a sound speed detector; a phase correction amount calculator calculating a phase shift caused by a sound speed change and calculating a phase correction amount based on the phase of the diffraction wave, the initial phase and the phase shift; a phase correction element correcting a phase of the reflection wave based on the phase correction amount; and a direction detector for detecting the direction to the object based on a difference between corrected phases of the reflection wave received by the first and second receiving elements, a distance between the first and second receiving elements, and a wavelength of the transmission ultrasonic wave corresponding to a sound speed.