Barrel shifter for combining pieces of data into a piece of comb

Details Barrel shifter for combining pieces of data into a piece of comb Barrel shifter for combining pieces of data into a piece of comb

1994-11-14

1997-09-23

Ngo, Chuong D.

Boots, shoes, and leggings

G06F 700

Patent

active

056711662

ABSTRACT:
A barrel shifter is provided with a plurality of shifters arranged in series for combining pieces of data A, B respectively represented by a sequence of 32-bit, 16-bit, or 8-bit binary digits into a piece of combined data C and shifting the combined data C by some bits. The shifters consists of a 16-bit shifter, 8-bit shifter, 4-bit shifter, 2-bit shifter, and two 1-bit shifters. The 32-bit data A, B are shifted in the 16-bit shifter. The 16-bit data B is shifted in the 16-bit shifter to connect with the 16-bit data A. The 8-bit data B is shifted in the 16-bit shifter to approach the 8-bit data B. The combined data C formed by connecting the 32-bit data A, B or the 16-bit data A, B in the 16-bit shifter is shifted in the following shifters. The 8-bit data B in the 16-bit shifter is shifted in the 8-bit shifter to connect with the 8-bit data A so that the combined data C is formed. The combined data C formed by connecting the 8-bit data A, B in the 8-bit shifter is shifted in the following shifters.

REFERENCES:
patent: 4931925 (1990-06-01), Utsumi et al.
patent: 5130940 (1992-07-01), Omote

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