The present invention relates to an ultrasound system. The ultrasound system comprises, a probe for transmitting an ultrasound beam along a plurality of scan lines in a target object and output receive signals based on ultrasound echoes reflected from the target object; a beam forming unit for applying delays to the receive signals and sum the delayed receive signals to thereby form scan line signals corresponding to the respective scan lines; a multiprocessing unit including a plurality of processors, each being configured to individually process a part of the scan line signals to output sub-image signals, the multiprocessing unit being configured to synthesize the sub-image signals to output ultrasound image signals corresponding to one image frame; and an image processing unit for performing an image processing upon the ultrasound image signals for display.