The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2004
Filed:
Feb. 15, 2001
George Kechriotis, Arlington, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A system and method for parallel computation of the unordered Hadamard transform. The computing system includes a plurality of interconnected processors and corresponding local memories. An input signal x is received, partitioned into M sub-vectors x of length M , and distributed to the local memories. Each processor computer a Hadamard transform (order M ) on the sub-vectors in its local memory (in parallel), generating M result sub-vectors t of length M , which compose a vector t of length M ×M . A stride permutation (stride M ) is performed on t generating vector u. Each processor computes a Hadamard transform (order M ) on the sub-vectors u in its local memory (in parallel), generating M result sub-vectors v of length M , which compose a vector v of length M ×M . A stride permutation is performed on v (stride M ) generating result vector w, which is the Hadamard transform of the input signal x.