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:
Dec. 09, 2008
Filed:
Mar. 25, 2008
Jérôme Dubuis, Nishinomiya, JP;
Hitoshi Maeno, Nishinomiya, JP;
Jérôme Dubuis, Nishinomiya, JP;
Hitoshi Maeno, Nishinomiya, JP;
Furuno Electric Company Limited, Nishinomiya, JP;
Abstract
In an under water detection for detecting the phase difference of an echo by two reception beams according to a split beam method, the difference Δθ between the phase difference of an echo detected by first and second reception beams formed in some direction and the phase difference of the echo detected by first and second reception beams which is formed in a direction rotated from the former direction concerned by a predetermined angle is detected by a phase detector. A reliability judging unit judges whether the difference Δθ detected by the phase detector is within a predetermined range or not. If the difference Δθ is within the predetermined range, an echo is displayed on a display unit. If the difference Δθ is not within the predetermined range, the echo is displayed with a specific color tone or the echo is not displayed.