Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2008-07-14
2010-11-16
Le, Long V (Department: 3768)
Measuring and testing
Vibration
By mechanical waves
C073S609000, C073S614000
Reexamination Certificate
active
07832275
ABSTRACT:
An ultrasonic inspection system utilizes a tunable digital filter with 4× interpolation. The system is used for scanning objects to be tested and includes a transmit/receive device to generate a test signal and receive an echo signal. A signal processing circuit processes the echo signal with one or more digital to analog converters for converting an analog version of the echo signal to a digital echo signal in the form of streaming digital data which is stored in a memory. The data is stored at a first data rate and read out at the second, slower data rate. An averaging decimator receives and processes the data from the memory and supplies it to an IIR filter and subsequently to an FIR filter and ultimately to a box car filter to effect processing thereon which increases the perceived resolution of the data by a given factor, preferably by a factor of 4.
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Office Action issued by the Chinese Patent Office on Jul. 6, 2010 in connection with corresponding Chinese Patent Application No. 200680046852.8.
English translation of Chinese Office Action issued in connection with Chinese Patent Application No. 200680046852.8 on Jul. 6, 2010.
Besser Steven
Thomas Andrew
Toomey Jason
Cattungal Sanjay
Le Long V
Olympus NDT
Ostrolenk Faber LLP
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