公开(公告)号：US20220351794A1

公开(公告)日：2022-11-03

申请号：US17245540

申请日：2021-04-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： CATHERINE GRAVES ,  CAN LI ,  JOHN PAUL STRACHAN

IPC: G11C27/00 ,  G11C15/04

Abstract: An analog content addressable memory (aCAM) that enables parallel searching of analog ranges of values and generates analog outputs that quantify matches between input data and stored data is disclosed. The input data can be compared with the stored data, and the input data can be determined to match the stored data based on a value associated with the input data being within a range associated with the stored data. The aCAM can generate an analog output that represents a number of matches and a number of mismatches between the input data and the stored data. Based on the analog output, whether the input data matches the stored data and a degree to which the input data matches the stored data can be determined.

公开(公告)号：US20220138204A1

公开(公告)日：2022-05-05

申请号：US17085805

申请日：2020-10-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： CATHERINE GRAVES ,  CAN LI ,  JOHN PAUL STRACHAN ,  DEJAN S. MILOJICIC ,  KIMBERLY KEETON

IPC: G06F16/2455 ,  G06F16/22 ,  G06F16/901 ,  G06F1/3296 ,  G06F1/3206 ,  G11C27/00 ,  G11C13/00

Abstract: Encoding of domain logic rules in an analog content addressable memory (aCAM) is disclosed. By encoding domain logic in an aCAM, rapid and flexible search capabilities are enabled, including the capability to search ranges of analog values, fuzzy match capabilities, and optimized parameter search capabilities. This is achieved with low latency by using only a small number of clock cycles at low power. A domain logic ruleset may be represented using various data structures such as decision trees, directed graphs, or the like. These representations can be converted to a table of values, where each table column can be directly mapped to a corresponding row of the aCAM.