Frequency domain processing of scanning acoustic imaging signals
US7522780B2 · kind B2 · utility
6Cited by
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77Claims
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Key dates
| Filing date | Mar 24, 2005 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | May 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the target, producing a time-domain signal indicative of the modifications, processing the time-domain signal to produce a frequency domain representation of the modifications, and producing an image-wise display of the frequency domain representation of the modifications. In one execution disclosed, the frequency domain representation is altered and then reconverted to a time domain signal before display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.