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.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Jun. 21, 2022
Western Digital Technologies, Inc., San Jose, CA (US);
Ishai Ilani, Dolev, IL;
Ran Zamir, Ramat Gan, IL;
Karin Inbar, Ramat Hasharon, IL;
Eran Sharon, Rishon Lezion, IL;
Idan Alrod, Herzliya, IL;
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
Effective use of cyclic redundancy check (CRC) signatures is achieved where each sector of a flash management unit (FMU) has a distinct CRC signature. The CRC signatures are XORed together to create a total CRC signature for the FMU. When a host device updates a single sector of the FMU, the CRC signature for the updated single sector can be changed by removing the old CRC signature corresponding to the single sector and replacing the old CRC signature with a new CRC signature corresponding to the updated single sector. The old CRC signature is XORed from the total CRC signature and then the new CRC signature is XORed with the remaining CRC signatures to create a new total CRC signature. In so doing, data integrity is ensured.