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Patent Searching and Data


Title:
ON-CHIP NON-VOLATILE MEMORY (NVM) SEARCH
Document Type and Number:
WIPO Patent Application WO/2020/139425
Kind Code:
A3
Abstract:
The disclosure relates in some aspects to on-chip processing circuitry formed within the die of a non-volatile (NVM) array to perform data searches. In some aspects, the die includes components configured to sense wordlines of stored data in the NVM array by applying voltages on the wordlines serially, and then search for an input data pattern within the serially- sensed wordlines. In some examples, the components of the die include latches and circuits configured to perform bitwise latch logic search operations. In other examples, the search components are configured with under-the-array or next-to-the-array dedicated search circuitry that uses registers and/or random access memory (RAM). Other aspects relate to a separate controller device for controlling the on-chip NVM search operations. For example, the controller may determine whether to search for data using search components of the NVM die or processors of the controller based, e.g., on a degree of fragmentation of data.

Inventors:
SHARON ERAN (US)
MARCU ALON (US)
BENISTY SHAY (US)
HAHN JUDAH (US)
ALROD IDAN (US)
BAZARSKY ALEXANDER (US)
NAVON ARIEL (US)
ZAMIR RAN (US)
Application Number:
PCT/US2019/050106
Publication Date:
October 22, 2020
Filing Date:
September 06, 2019
Export Citation:
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Assignee:
WESTERN DIGITAL TECH INC (US)
International Classes:
G06F16/903; G06F3/06; G11C16/04; G11C16/08
Foreign References:
US9875799B12018-01-23
US20140133233A12014-05-15
US20140229131A12014-08-14
US20080080603A12008-04-03
KR20140052691A2014-05-07
Other References:
See also references of EP 3724787A4
Attorney, Agent or Firm:
FITCH, Gabriel (US)
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