Intelligent cache with read destructive memory cells

US11899590B2 · kind B2 · utility

Assignee

• Seagate Technology LLC · US

Inventors

• Jon D. Trantham · Chanhassen, US
• Praveen Viraraghavan · Chicago, US
• John W. Dykes · Eden Prairie, US
• Ian J. Gilbert · Chanhassen, US
• Sangita Shreedharan Kalarickal · Eden Prairie, US
• Matthew J. Totin · Excelsior, US
• Mohamad El-Batal · Westminster, US
• Darshana H. Mehta · Shakopee, US

Key dates

• Filing date: Jun 20, 2022
• Grant date: Feb 13, 2024
• Expiry date: Jun 20, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G11C15/046
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A data storage system can employ a read destructive memory configured to fill a first cache with a first data set from a data repository prior to populating a second cache with a second data set describing the first data set with the first and second cache each having non-volatile ferroelectric memory cells. An entirety of the first cache may be read in response to a cache hit in the second cache with the cache hit responsive to a data read command from a host and with the first cache being read without a refresh operation restoring the data of the first cache.