Patent ID: 6172939
Filing Date: 2001-01-09
Classification: G01S,G10K

Abstract:
A system for producing an ultrasonic waveform, the system comprising:a source of waveform samples for said ultrasonic waveform; andan ultrasonic transducer operable to output said ultrasonic waveform in response to said waveform samplesa signal path operatively connecting the source and the ultrasonic transducer; andat least one device of:a modulator operable to modulate by a desired frequency samples in said signal path;an upsampler operable to upsample samples in said signal path;an interpolator operable to interpolate samples in said signal path;a delay unit, the source responsive to said delay unit to delay providing the waveform samples to the signal path;a filter operable to filter samples in said signal path;a phase rotator operable to phase samples in said signal path; anda multiplier operable to weight the waveform samples in said signal path.