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US 4,788,981 AGranted
Pulse compression apparatus for ultrasonic image processing
AssigneeOlympus Optical Co., Ltd.
InventorsTatsuo Nagasaki, Koji Taguchi, Shinichi Imade, Eishi Ikuta, Kazunori Shionoya
Life of this patent
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Abstract
A pulse compression apparatus comprises a quadrature detector for converting an echo signal obtained by an ultrasonic transducer into a complex signal, a reference wave oscillator for producing a reference wave signal, and a correlation circuit for deriving a correlation between the complex signal and the reference wave signal to compress the echo signal.
Claims12
A pulse compression apparatus for ultrasonic image processing, comprising:
- quadrature detection means for converting an echo signal obtained from an ultrasonic transducer means into a complex signal;
- reference output means for producing a reference wave signal;
- and
- correlation means for deriving a correlation between said complex signal and said reference wave signal to compress said echo signal.
1 more element
Dependencies are inferred from the claim text.