A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
354/137, 349/36
A61B 10/00 (2006.01) G01N 29/06 (2006.01) G01S 7/52 (2006.01) G01S 15/89 (2006.01) G06F 9/00 (2006.01)
Patent
CA 1131751
IMPROVED FREQUENCY SYNTHESIZER APPARATUS AND METHOD IN ULTRASONIC IMAGING Abstract of the Disclosure A frequency program synthesizing apparatus and method is disclosed for controlling delay circuitry in ultrasonic imaging systems. The ultrasonic system includes a multi-element ultrasonic transducer for propagating ultrasonic energy into a subject, display apparatus for producing visual information about the subject from the ultrasonic energy, and imaging elec- tronics for processing image information representing electrical signals from the transducer and employs the processed signals to cause the display to generate a visual image of internal subject structure. The imaging electronics includes delay circuitry which require pro- grams of precisely controlled stepped clocking frequen- cies, and have frequency program synthesizers for pro- ducing the clocking signals. Each frequency program synthesizer includes an adjustable frequency source for producing the clocking signals and a multi-channel memory having a plurality of address channels each allo- cated for digitally storing a signal representing the frequency corresponding to one of a set of frequency program steps and circuitry for applying the stored signals in a sequence to cause the adjustable frequency generator to produce the frequency program. Each pro- gram synthesizer also includes updating circuitry for adjusting the values of the stored digital frequency representations.
322043
Bernardi Richard B.
Kellogg Seeley C.
Peluso Philip J.
Picker Corporation
Ridout & Maybee Llp
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