High performance carry chain with reduced macrocell logic...

Details High performance carry chain with reduced macrocell logic... High performance carry chain with reduced macrocell logic...

2006-02-21

2006-02-21

Mai, Tan V. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S712000

Reexamination Certificate

active

07003545

ABSTRACT:
A method for computing a sum or difference and a carry-out of numbers in product-term based programmable logic comprising the steps of: (A) generating (i) a portion of the sum or difference and (ii) a lookahead carry output in each of a plurality of logic blocks; (B) communicating the lookahead carry output of each of the logic blocks to a carry input of a next logic block; (C) presenting the lookahead carry output of a last logic block as the carry-out.

REFERENCES:
patent: 3925652 (1975-12-01), Miller
patent: 4323981 (1982-04-01), Nakamura
patent: 4584661 (1986-04-01), Grundland
patent: 4761760 (1988-08-01), Tomoji
patent: 5481206 (1996-01-01), New et al.
patent: 5701504 (1997-12-01), Timko
patent: 5898602 (1999-04-01), Rothman et al.
patent: 6034546 (2000-03-01), Jones et al.
patent: 6188240 (2001-02-01), Nakaya
patent: 6201409 (2001-03-01), Jones et al.
patent: 6269386 (2001-07-01), Siers et al.
patent: 6708190 (2004-03-01), Jones et al.
Roger Bettman et al., “Reduced Product Term Carry Chain”, U.S. Appl. No. 09/587,708, filed Jun. 5, 2000.
Chang et al., Carry-select adder using single ripple-carry adder, Oct. 29th, 1998, IEEE, vol. 34, No. 22, pp. 2101-2103.

Affiliated with

Also associated with

Rating

High performance carry chain with reduced macrocell logic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High performance carry chain with reduced macrocell logic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High performance carry chain with reduced macrocell logic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3644917