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:
Aug. 05, 2025
Filed:
Jul. 12, 2023
Western Digital Technologies, Inc., San Jose, CA (US);
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
The present disclosure generally relates to read and write operations utilizing barrier commands. Using barrier commands and a snapshot of doorbell states of submission queues (SQs), the necessary write commands to perform a read may be identified and executed to reduce any wait time of the host. As such, host delays during reads and writes are reduced. In absence of a barrier command, the host needs to wait for writes to complete before performing a read. When a barrier command is used, the host needs to wait for the barrier command to complete before performing a read. The controller will execute the post barrier reads only after completing the pre-barrier writes. As will be discussed herein, the controller completes the barrier command as soon as a doorbell snapshot is taken even though the pre-barrier writes may not yet be completed.