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:
Nov. 13, 2012
Filed:
Sep. 15, 2010
Chih-ling Wang, Miaoli, TW;
Chih-kang Yeh, Kinmen County, TW;
Chih-Ling Wang, Miaoli, TW;
Chih-Kang Yeh, Kinmen County, TW;
Phison Electronics Corp., Miaoli, TW;
Abstract
A data protecting method for a portable memory storage apparatus is provided. The method includes determining whether a mode signal is at a data protecting mode, and performing a file hiding procedure to change a file allocation table if the mode signal is at the data protecting mode, wherein a host system coupled to the portable memory storage device is allowed to only access a portion of logical addresses of the portable memory storage apparatus according to the changed file allocation table and files stored in the portable memory storage apparatus before the file hiding procedure are written into another portion of the logical addresses. Additionally, the method still includes performing a file showing procedure to change the file allocation table if the mode signal is not at the data protecting mode, wherein the host system may access all the logical addresses according to the changed file allocation table.