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.

Date of Patent:
Sep. 07, 2021

Filed:

Aug. 13, 2019
Applicant:

Toshiba Memory Corporation, Tokyo, JP;

Inventors:

Naoko Yamada, Yokohama Kanagawa, JP;

Yuki Kanbe, Fujisawa Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/57 (2013.01); G06F 21/34 (2013.01); G06F 21/79 (2013.01); G06F 21/64 (2013.01);
U.S. Cl.
CPC ...
G06F 21/572 (2013.01); G06F 21/34 (2013.01); G06F 21/575 (2013.01); G06F 21/64 (2013.01); G06F 21/79 (2013.01);
Abstract

According to one embodiment, an electronic apparatus includes a first processor, a second processor with a security capability higher than a security capability of the first processor, a first nonvolatile memory to store a program which is to be executed by the first processor, and a volatile second memory to store the program and data that is to be referred to by the first processor while the first processor executes the program. The second processor is configured to authenticate a rewrite command requesting to change the data in the second memory and selectively execute the rewrite command based on the authentication.


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