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:
Feb. 05, 2013
Filed:
Nov. 21, 2008
Ming-dar Chen, Hsinchu, TW;
Hsiang-an Hsieh, Shjhih, TW;
Ming-Dar Chen, Hsinchu, TW;
Hsiang-An Hsieh, Shjhih, TW;
A-Data Technology Co., Ltd., Taipei, TW;
Abstract
A method for memory space management is disclosed. It uses a resident program loaded into an operation system or the controller of a storage device to monitor the storage space and the resource allocation of the file system of the storage device. The status of the logical address with an erased and invalid data mapped with a physical block is checked via a L2P mapping table. By using a data erase instruction, the controller modifies the L2P mapping table to cancel the link relation between the physical block and the logical address and erase the physical block to release the memory space. Finally, the check location is stored for a next check. The method for memory space management improves the access speed and the usage life of the storage device.