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:
Jan. 17, 2023
Filed:
Nov. 24, 2020
Applicant:
Mediatek Inc., Hsinchu, TW;
Inventors:
Assignee:
MediaTek Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); G06F 21/57 (2013.01); G06F 21/53 (2013.01); G06F 21/79 (2013.01);
U.S. Cl.
CPC ...
G06F 21/577 (2013.01); G06F 21/53 (2013.01); G06F 21/79 (2013.01);
Abstract
A system is provided to perform secure operations. The system includes an I/O subsystem, a memory subsystem and processors. The processors are operative to execute processes in trusted execution environments (TEEs) and rich execution environments (REEs). Each of the TEEs and the REEs is identified by a corresponding access identifier (AID) and protected by a corresponding system resource protection unit (SRPU). The corresponding SRPU of a TEE includes instructions, when executed by a corresponding processor, cause the corresponding processor to control access to the TEE using a data structure including allowed AIDs and pointers to memory locations accessible by the allowed AIDs.