Bit field operation circuit

Details Bit field operation circuit Bit field operation circuit

2011-05-24

2011-05-24

Ngo, Chuong D (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C712S224000, C712S300000

Reexamination Certificate

active

07949697

ABSTRACT:
A bit field operation circuit has a first shift unit, a mask shift amount control circuit, a second shift unit, a logic operation unit, and a selection unit. The first shift unit outputs a first intermediate data based on a first control signal. The mask shift amount control circuit outputs a mask shift control signal in accordance with a mask shift amount. The second shift unit outputs a second intermediate data based on a mask shift control signal. The third shift unit outputs a third intermediate data based on the first control signal. The logic operation unit performs logical operation of the second intermediate data and the third intermediate data, and outputs a mask selection data. The selection unit selects either one of the first intermediate data or the second input data based on the mask selection data to output as output data.

REFERENCES:
patent: 5129066 (1992-07-01), Schmookler
patent: 5704052 (1997-12-01), Wu et al.
patent: 6430684 (2002-08-01), Bosshart
patent: 7350058 (2008-03-01), Carpenter et al.
patent: 2003/0131030 (2003-07-01), Sebot et al.
patent: 2004/0193848 (2004-09-01), Tavares
patent: 9-114639 (1997-05-01), None

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