Bidirectional shifter circuit

Details Bidirectional shifter circuit Bidirectional shifter circuit

1996-09-03

1998-12-01

Malzahn, David H.

Boots, shoes, and leggings

G06F 501

Patent

active

058448250

ABSTRACT:
A bidirectional shifter circuit is disclosed for shifting an inputted data word a chosen number of bit positions in either a first or a second chosen direction. The bidirectional shifter circuit is provided with a first bit-reversing circuit which receives an inputted data word. In response to choosing a first shift direction, the first bit-reversing circuit outputs the data word with the bits in their original order. In response to choosing the second shift direction, the first bit-reversing circuit outputs the data word with the bits in reverse order. A single-direction shifter circuit is provided which receives the data word outputted by the first bit-reversing circuit and shifts the received data word the chosen number of bit positions in the first direction. A second bit-reversing circuit is provided which receives the shifted data word and which, in response to choosing the first shift direction, outputs the data word with the bits in the same order as received and, in response to choosing the second shift direction, outputs the data word with the bits in reverse order.

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patent: 5262971 (1993-11-01), Yamaguchi

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