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:
Dec. 31, 2013
Filed:
Dec. 10, 2009
Applicants:
Oliver Whitehouse, Berkshire, GB;
Benjamin Winston, London, GB;
Michael E. Mccallum, Waterloo, CA;
Inventors:
Assignee:
BlackBerry Limited, Waterloo, CA;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for dynamically (i.e., upon boot) rewriting, in a failure resistant manner, of part of, or the entirety of, the flash memory for a device allows for a changing of location for logical blocks of execute-in-place code. Conveniently, the rewriting results in a randomization, of varying degree, of the address space layout upon each boot up cycle.