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. 26, 2014
Filed:
Sep. 08, 2011
Wei-chen Teo, Miaoli County, TW;
Wei-Chen Teo, Miaoli County, TW;
Phison Electronics Corp., Miaoli, TW;
Abstract
A memory storage device, a memory controller, and a method for identifying a valid data are provided. A rewritable non-volatile memory chip of the memory storage device includes physical blocks. Each of the physical blocks has physical pages. In the present method, logical blocks are configured and mapped to a portion of the physical blocks, wherein each of the logical blocks has logical pages. When a data to be written by a host system into a specific logical page is received, a substitute physical block is selected, the data is written into a specific physical page in the substitute physical block, and the address of a physical page in which a previous data corresponding to the specific logic page is written is recorded into the specific physical page. Thereby, a physical page containing the latest valid data can be identified among several physical pages corresponding to a same logical page.