Methods and Apparatus for Performing Video Processing Matrix Operations Within a Memory Array
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United States of America Patent
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Jun 27, 2024
app pub date -
Feb 6, 2024
filing date -
Nov 20, 2019
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Video processing matrix operations within a memory fabric, including converting a memory array into a matrix fabric for discrete cosine transform (DCT) matrix transformations and performing DCT matrix operations therein. For example, DCT matrix-matrix multiplication operations are performed within a memory device that includes a matrix fabric and matrix multiplication unit (MMU). Matrix-matrix multiplication operations may be obtained using separate matrix-vector products. The matrix fabric may use a crossbar construction of resistive elements. Each resistive element stores a level of impedance that represents the corresponding matrix coefficient value. The crossbar connectivity can be driven with an electrical signal representing the input vector as an analog voltage. The resulting signals can be converted from analog voltages to a digital values by an MMU to yield a vector-matrix product. In some cases, the MMU may additionally perform various other logical operations within the digital domain.
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