SHIFTER Russian patent published in 2017 - IPC G06F5/01 G11C19/00 H03M13/00 

FIELD: information technology.

SUBSTANCE: shifter comprises a bidirectional shift matrix of dimension NxM, where M=log₂N, from M elements cascade 2AND-2AND-2AND-3OR and 2AND-2AND-2OR, block for shifts number modification comprising a group of (M-2) OR elements, the first group of (M-1) AND elements and a group of (M-1) EXCLUSIVE OR elements, shift direction control unit comprising the second group of the (M-1) AND elements, a group of (M-1) AND elements with prohibition input, a group of (M-1) NO elements and the third group of (M-1) AND elements, zero result flag forming comprisng the first, the second and the third AND elements with prohibition input, the first and the second OR element and AND-NO element, four control inputs of direction set and the shift type.

EFFECT: increased speed, possibility to set the amount of logical shift in the bits range between 0 and N or more than N.

1 dwg, 3 tbl