{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11469909","patent":{"patent_number":"US-11469909","title":"Physical unclonable function with NAND memory array","assignee":null,"inventors":[],"filing_date":"2018-12-28T00:00:00.000Z","publication_date":"2022-10-11T00:00:00.000Z","cpc_codes":["H04L","G06F","G06F","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","G11C","H04L","H04L"],"num_claims":20,"abstract":"Various examples described herein are directed to systems and methods for generating data values using a NAND flash array. A memory controller may read a number of memory cells at the NAND flash array using an initial read level to generate a first raw string. The memory controller may determine that a difference between a number of bits from the first raw string having a value of logical zero and a number of bits from the first raw string having a value of logical one is greater than a threshold value and read the number of memory cells using a second read level to generate a second raw string. The memory controller may determine that a difference between a number of bits from the second raw string having a value of logical zero and a number of bits from the second raw string having a value of logical one is not greater than a threshold value and applying a cryptographic function using the second raw string to generate a first PUF value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Physical unclonable function with NAND memory array","description":"Various examples described herein are directed to systems and methods for generating data values using a NAND flash array. A memory controller may read a number of memory cells at the NAND flash array","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11469909","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11469909","citation_suggestion":"Patentable. \"Physical unclonable function with NAND memory array\" (US-11469909). https://patentable.app/patents/US-11469909","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11469909","json":"https://patentable.app/api/llm-context/US-11469909","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:31:17.824Z"}