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:
Jun. 14, 2005
Filed:
Sep. 09, 2003
Michael Tsai, Hsinchu, TW;
Roger Huang, Hsinchu, TW;
Michael Tsai, Hsinchu, TW;
Roger Huang, Hsinchu, TW;
Mustek Systems Inc., , TW;
Abstract
A method for updating firmware includes dividing a memory of a computer device into five portions, wherein an initial program, an old program, an old backup firmware, the checksum of the old firmware, and the checksum of the old backup firmware are saved, respectively, in the first portion, the second portion, the third portion, the fourth portion and the fifth portion; executing the initial program in the first portion; writing a new firmware into the second portion from an external device for replacing the old firmware; writing the checksum of the new firmware into the fourth portion; writing the new firmware into the third portion for replacing the old backup firmware; writing the checksum of the new firmware into the fifth portion; and executing the new firmware in the second portion for operating the computer device.