Patent ID: 7918797
Filing Date: 2011-04-05
Classification: A61B,G01S

Abstract:
1. An ultrasound diagnostic system for forming multiple receiving scan lines with one original receiving scan line, comprising: a plurality of probe elements configured to change ultrasound echoes from one original receiving scan line into analog signals, wherein the analog signals have a center frequency; an analog-digital converter configured to convert the analog signals into digital data; and a receiving beam-former configured to form data of the multiple receiving scan lines based on the digital data, wherein the receiving beam-former includes, coarse delaying units configured to coarsely delay the digital data from analog-digital converter, first storing units configured to store the coarsely delayed data, a controlling unit configured to extract the data stored in the first storing units at a rate defined by second storing units configured to store data extracted from the first storing units, wherein the controlling unit is further configured to select the data stored in the second storing units repeatedly, as many as a number of the multiple receiving scan lines at a rate defined by a fine delaying and interpolating unit configured to perform fine delay and interpolation to the selected data to form data of the multiple receiving scan lines, wherein “DR” and “CR” denote an extraction rate and a selection rate, respectively, and “n,” “fc” and “k” denote a positive integer, the center frequency and the number of the multiple receiving scan lines, respectively, which are provided by a user during an operation of the system.