Patent · US Active

Memory subsystem in CNN based digital IC for artificial intelligence

US10331999B2 · kind B2 · utility

1Cited by
18References
7Claims
0Family size

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Key dates

Filing dateJun 23, 2017
Grant dateJun 25, 2019
Priority date—
Expiry dateAug 8, 2037

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG11C17/16
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

CNN based digital IC for AI contains a number of CNN processing units. Each CNN processing unit contains CNN logic circuits operatively coupling to a memory subsystem having first and second memories. The first memory includes an array of magnetic random access memory (RAM) cells for storing weights (e.g., filter coefficients) and the second memory contains SRAM for storing input signals (e.g., imagery data). The first memory may store one-time-programming weights. The memory subsystem may contain a third memory that contains magnetic RAM cells for storing one-time-programming data for security purpose. The magnetic RAM includes STT-RAM or OST-MRAM in SLC or MLC technology.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.