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. 30, 2011
Filed:
Sep. 14, 2005
Applicants:
Roy Chrisop, Camas, WA (US);
Jack Van Oosterhout, Camas, WA (US);
Inventors:
Roy Chrisop, Camas, WA (US);
Jack Van Oosterhout, Camas, WA (US);
Assignee:
Sharp Laboratories of America, Inc., Camas, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 12/14 (2006.01); G06Q 20/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for preventing unauthorized access to information temporarily stored in memory, such as a hard disk drive, associated with a digital document processor, such as a digital copier, printer, or facsimile machine. This invention includes storing information to memory, conducting an operation on the information, and automatically overwriting the information one or more times with a bit mask. Bit masks may be non-random or random sequences of binary values.