Methods and apparatus for carry generation in a binary look...

Details Methods and apparatus for carry generation in a binary look... Methods and apparatus for carry generation in a binary look...

2011-03-08

2011-03-08

Malzahn, David H (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07904499

ABSTRACT:
Methods and apparatus provide for a carry generation tree for a carry look-ahead binary adder, which includes N stages of operators, reducers, and/or repeaters, wherein: a first of the stages receives binary outputs from a series of binary adders; a last of the stages produces a carry out signal representing the carry state of the series of binary adders; and any operator in a given stage does not receive signals from more than one operator in a preceding stage.

REFERENCES:
patent: 5043934 (1991-08-01), Lamb
patent: 5095458 (1992-03-01), Lynch et al.
patent: 5235539 (1993-08-01), Patel
patent: 5276635 (1994-01-01), Naini et al.

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