Methods and apparatus for efficient complex long...

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07072929

ABSTRACT:
A digital signal processor for computing various types of complex multiplication is described. The digital signal processor operates in conjunction with registers, a multiplier, an adder, and a multiplexer The Registers store first and second complex operands. The multiplier simultaneously performs multiplications to produce each combination of products between the real and imaginary terms of the first and second complex operands. The multiplexer selects which produced products are added to or subtracted from each other based on the type of complex multiplication being performed. The adder simultaneously performs additions and subtractions, if necessary, to produce both real and imaginary results depending on whether the type of complex multiplication being performed is a conjugated operation. The registers store the results of the complex multiplication.

REFERENCES:
patent: 4779218 (1988-10-01), Jauch
patent: 4996661 (1991-02-01), Cox et al.
patent: 5204828 (1993-04-01), Kohn
patent: 5579253 (1996-11-01), Lee et al.
patent: 5896543 (1999-04-01), Garde
patent: 5936872 (1999-08-01), Fischer et al.
patent: 5983253 (1999-11-01), Fischer et al.
patent: 6058408 (2000-05-01), Fischer et al.
patent: 6144979 (2000-11-01), Song et al.
patent: 6237016 (2001-05-01), Fischer et al.
patent: 6411979 (2002-06-01), Greenberger
patent: 6470370 (2002-10-01), Fischer et al.
patent: 6557022 (2003-04-01), Sih et al.
patent: 6625630 (2003-09-01), Vinitzky
patent: 6651079 (2003-11-01), Nguyen et al.
patent: 6675187 (2004-01-01), Greenberger
patent: 6839728 (2005-01-01), Pitsianis et al.
Fischer et al., Method and apparatus for storing complex numbers in formats which allow efficient complex multiplication operations to be performed and for performing such complex multiplication operations, Jan. 16, 2003, Pub. No.: 0014458 A1.
Kamar et al., Conjugate pair fast fourier transform, Mar. 1989, IEEE, vol. 25, No. 5, pp. 324-325.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods and apparatus for efficient complex long... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for efficient complex long..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for efficient complex long... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3531698

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.