Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
System and method for computing and unordered Hadamard transform










Image Number 8 for United States Patent #6766342.

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.1 sub-vectors x.sub.i of length M.sub.2, and distributed to the local memories. Each processor computer a Hadamard transform (order M.sub.2) on the sub-vectors in its local memory (in parallel), generating M.sub.1 result sub-vectors t.sub.i of length M.sub.2, which compose a vector t of length M.sub.1.times.M.sub.2. A stride permutation (stride M.sub.2) is performed on t generating vector u. Each processor computes a Hadamard transform (order M.sub.1) on the sub-vectors u.sub.j in its local memory (in parallel), generating M.sub.1 result sub-vectors v.sub.j of length M.sub.2, which compose a vector v of length M.sub.2.times.M.sub.1. A stride permutation is performed on v (stride M.sub.1) generating result vector w, which is the Hadamard transform of the input signal x.








 
 
  Recently Added Patents
Decrementing settings for a range of power caps when a power cap is exceeded
Contamination barrier
Phone messaging using audio streams
Backside structure and methods for BSI image sensors
Control of an electric machine
Controlling a video window position relative to a video camera position
Semiconductor unit having a power semiconductor and semiconductor apparatus using the same
  Randomly Featured Patents
Pressure sensitive copy article
Video printer for printing plurality of kinds of images of different image formats
Positioning of embroidery
Secondary pay line indicator in a wagering game
Image processing apparatus, projector, image processing method, and method for controlling image processing apparatus
Amplitude modulation detector
Gasification of hydrocarbon feedstocks
Method and apparatus for treating a board-like material with a gaseous agent
Velocipede with single frame bar
Weighted pool cover perimeter anchor