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:
Dec. 24, 2019
Filed:
Sep. 27, 2017
Western Digital Technologies, Inc., San Jose, CA (US);
Reed P. Tidwell, Salt Lake City, UT (US);
Yoav Weinberg, Thornhill, CA;
Daniel Tuers, Kapaa, HI (US);
Matthew Davidson, Los Altos, CA (US);
Eran Erez, Bothell, WA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
Systems, methods, and apparatus are provided that can reduce power consumption of memory controllers in response to memory command backlog in various situations. A data storage device includes a plurality of sets of non-volatile memory (NVM) devices, a central controller, and a plurality of channel controllers. Each channel controller is coupled to a distinct set of the plurality of sets of NVM devices. Each channel controller includes a command queue configured to store pending memory commands and provide backlog information. The central controller is configured to receive the backlog information of the command queues of the plurality of channel controllers, and adjust a clock frequency of the central controller and one or more clock frequencies of the plurality of channel controllers based on the backlog information such that the pending memory commands in each of the command queues are below a predetermined threshold level.