Patent ID: 6443897
Filing Date: 2002-09-03
Classification: G10K

Abstract:
A beamforming system comprising:a transducer array comprising a multiplicity of transducer elements; a multiplicity of receive channels respectively operatively coupled to said multiplicity of transducer elements; a cordic rotator connected to calculate respective hypotenuses for each transducer element to a focal position, said calculation being performed for each of a multiplicity of focal positions, each hypotenuse being a function of focal position data representing a respective focal position and transducer element position data representing the position of a respective transducer element; an angular refraction correction circuit for outputting a delay adjustment which is a function of rotation angle data from said cordic rotator; and a time delay generator for applying respective time delays to respective receive channels, each time delay being a function of a respective hypotenuse calculation result output by said cordic rotator and a respective delay adjustment output by said angular refraction correction circuit.