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. 12, 2012
Filed:
Jul. 24, 2009
Marko Slyz, San Diego, CA (US);
Lashawn Mcghee, San Diego, CA (US);
Zhao-ming Wu, Beijing, CN;
LI Wen, Beijing, CN;
Marko Slyz, San Diego, CA (US);
LaShawn McGhee, San Diego, CA (US);
Zhao-Ming Wu, Beijing, CN;
Li Wen, Beijing, CN;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fault-tolerant approach for updating a compressed read-only file system in embedded devices using a two-step approach. In the first phase an update package creates an intermediate memory image where the data blocks are independently compressed so that, if needed, the data therein can be decompressed and read without access to any other surrounding data blocks. Then in the second phase the intermediate memory image is decompressed in a buffer so that it can be reimaged into its final form and order before being recompressed and written back to non-volatile memory over-writing the intermediate memory image.