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:
Mar. 18, 2025
Filed:
Nov. 28, 2022
Huawei Technologies Co., Ltd., Shenzhen, CN;
Jea Woong Hyun, Los Altos, CA (US);
Chun Liu, San Jose, CA (US);
Chaohong Hu, San Jose, CA (US);
Xin Liao, San Jose, CA (US);
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
Write operation and garbage collection methods are provided for a Solid State Drive (SSD) controller of a SSD having Not-AND (NAND) flash memory devices with on-die Static Random Access Memory (SRAM) and NAND flash memory. In the write operation method, a received block of data is stored in on-die SRAM of the NAND flash device, rather than in on-chip SRAM of the controller, prior to programming into NAND flash memory. Until programmed into NAND flash memory, the block of data remains available in the on-die SRAM to fulfill an 'immediate read' operation, if received. In the garbage collection method, blocks of data are read from one or more source NAND flash devices and stored in on-die SRAM of a destination NAND flash device until a limit of such blocks has been reached, then the destination NAND flash device programs the blocks from the on-die SRAM into NAND flash memory.