The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 14, 2021

Filed:

Jun. 18, 2020
Applicant:

Hewlett Packard Enterprise Development Lp, Houston, TX (US);

Inventors:

Thomas Van Vaerenbergh, Diegem, BE;

Can Li, Palo Alto, CA (US);

Catherine Graves, Palo Alto, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/22 (2006.01); G11C 7/10 (2006.01); G11C 15/04 (2006.01); G11C 13/04 (2006.01); G11C 11/42 (2006.01);
U.S. Cl.
CPC ...
G11C 7/222 (2013.01); G11C 7/1012 (2013.01); G11C 7/1054 (2013.01); G11C 7/1081 (2013.01); G11C 11/42 (2013.01); G11C 13/04 (2013.01); G11C 15/04 (2013.01);
Abstract

Systems and methods for an optical ternary content addressable memory (TCAM) are provided. The optical TCAM implements a time-division multiplexing (TDM) based encoding scheme to encode each bit position of a search word in the time domain. Each bit position is associated with at least two time slots. The encoded optical signal comprising the search word is routed through one or more modulators configured to represent a respective TCAM stored word. If a mismatch between at least one bit position of the search word and at least one TCAM stored word occurs, a photodetector or photodetector array will detect light.


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