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:
Feb. 21, 2012
Filed:
Feb. 28, 2008
Shinichiro Umemura, Sendai, JP;
Takashi Azuma, Kodaira, JP;
Shinichiro Umemura, Sendai, JP;
Takashi Azuma, Kodaira, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
With a natural number n, an ultrasound pulse having a center frequency of nfis transmitted, and an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. Another ultrasound pulse having a center frequency of (n+1)fis transmitted, and, similarly, an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. The received echo signal which has a center frequency of nfis raised to the power of (n+1) in a self-multiplication unit. Meanwhile, The received echo signal having a center frequency of (n+1)fis raised to the power of n in another self-multiplication unit. Each multiplication produces a signal having a center frequency of n(n+1)f. A signed echo signal is obtained by a phase-sensitive detection between the two obtained signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile