Pre-Grant Publication Number: 20070233761
Crossbar arithmetic processor
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#127Evolution in Materio: Exploiting the Physics of Materials for Computation
Applies to Claims 1
Submitted by: Anand KamalLast updated: over 5 years ago
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Summary / Description
Summary / DescriptionThe idea of using an array of programmable resistances to perform mathematical operations is disclosed.
 
Basic Information
Type of Prior ArtOnline Publication
 
URLhttp://arxiv.org/PS_cache/cond-...
 
Author/Creator
 
TitleEvolution in Materio: Exploiting the Physics of Materials for Computation
 
Publication DateDecember 31, 2005
 
PublisherIEEE
 
Directions to Document LocationIEEE Transactions on Nanotechnology
 
Additional Information
 
Notes / To Do
Notes
 
Excerpt
Excerpt
“Consider a programmable resistor array. It can be used to perform the mathematical operation of vector-matrix multiplication. This operation is at the heart of target recognition, pattern recognition, data compression, process control, associative memory, content addressable memory, and many other computations. In fact, vector-matrix multiplication is the primary mathematical operation that digital signal processing (DSP) chips undertake” (pp. 12).
 
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Claims
1
A computing device comprising: at least one crossbar array including a first set of N conductive parallel wires (N≧2) forming a set of columns and a second set of M conductive parallel wires (M≧2) forming a set of rows, and formed so as to intersect the first set of conductive parallel wires, wherein intersections are formed between the first and second sets of wires forming M×N crosspoints wherein each of the crosspoints is programmable so as to be in a relatively high conductive state representative of a binary value 1 or a relatively low conductive state representative of a binary value 0; a programming unit configured to program the crosspoints to have one of the relatively high conductive state or the relatively low conductive state so that at least one column of the crossbar array stores a bit pattern representative of a programmed numerical value; an input unit configured to provide a bit pattern representative of an input numerical value to the columns of the crossbar array; and a post-processing unit configured to convert analog signals output from each of the rows of the crossbar array into digital output bit patterns and configured to combine the digital output bit patterns so as to form a resultant bit pattern representative of an output numerical value, wherein the output numerical value is mathematically dependent on both the programmed numerical value and the input numerical value.
Relevance
The idea of using an array of programmable resistances to perform mathematical operations is disclosed.
The idea of using an array of programmable resistances to perform mathematical operations is disclosed.
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