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. 01, 2010
Filed:
Sep. 22, 2005
Tadashi Kawaguchi, Tokyo, JP;
Hideki Hirose, Tokyo, JP;
Kei Morita, Kawasaki, JP;
Eijiro Atarashi, Toride, JP;
Takahiro Haraguchi, Kawasaki, JP;
Fumio Mikami, Chigasaki, JP;
Tadashi Kawaguchi, Tokyo, JP;
Hideki Hirose, Tokyo, JP;
Kei Morita, Kawasaki, JP;
Eijiro Atarashi, Toride, JP;
Takahiro Haraguchi, Kawasaki, JP;
Fumio Mikami, Chigasaki, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A data processing apparatus secures data from third parties in event of power loss by utilizing a backup power supply to provide power while data is erased from memory. The data is stored in a nonvolatile memory. A first voltage supply unit supplies voltage to the memory, and a second voltage unit supplies voltage to the memory when the first voltage supply unit is incapable of supplying voltage to the memory. When the first voltage supply unit becomes incapable of supplying voltage to the memory, the memory is controlled to erase the data stored therein using a selected one of a plurality of erasing processes depending on the status of processing of the data.