Control system for transferring vector data without waiting for transfer end of the previous vector data

Claim 1

A data transfer controller for controlling transfer of vector data from a first device to a second device, the vector data consisting of a plurality of elements, comprising: storing means, located between said first and second devices, for sequentially storing the vector data supplied from said first device; n read control means for controlling to sequentially transfer the vector data from said first device to said storing means and each for controlling to read out n elements of one vector data from said storing means to said second device; n/2 switching circuits, each receiving data from one of n/2 unique pairs of read control means and each alternately supplying said storing means with data from a first read control means of a pair and data from a second read control means of said pair in accordance with a predetermined switching condition; n data transfer paths respectively corresponding to said n read control means and arranged between said storing means and said second device; n/2 means for delaying alternate elements, included in half of said data transfer paths, each receiving an undelayed element from said storage means and outputting a delayed element; and n switching circuits in said n data transfer paths, each receiving a delayed element from said n/2 delaying means and an undelayed element from said storing means, selecting elements from said vector data, and supplying said selected elements to said second device.