EP 2663946 A2 20131120 - METHOD FOR OPERATING A MICROPROCESSOR UNIT, IN PARTICULAR IN A MOBILE TERMINAL
Title (en)
METHOD FOR OPERATING A MICROPROCESSOR UNIT, IN PARTICULAR IN A MOBILE TERMINAL
Title (de)
VERFAHREN ZUM BETRIEB EINER MIKROPROZESSOREINHEIT, INSBESONDERE IN EINEM MOBILEN ENDGERÄT
Title (fr)
PROCÉDÉ D'EXPLOITATION D'UNE UNITÉ DE MICROPROCESSEUR, NOTAMMENT DANS UN TERMINAL MOBILE
Publication
Application
Priority
- DE 102011012226 A 20110224
- EP 2012000765 W 20120222
Abstract (en)
[origin: WO2012113547A2] The invention relates to a method for operating a microprocessor unit, in particular in a mobile terminal, wherein the microprocessor unit comprises a microprocessor (MP) on which a normal runtime environment (NZ) is implemented with a first operating system (B1) and a secure runtime environment is implemented with a second, secure operating system (B2). The microprocessor unit also comprises a RAM memory (R) outside the secure runtime environment (TZ), into which memory the first operating system (B1) is loaded when executing the normal runtime environment (NZ). The invention is distinguished by the fact that the second operating system (B2) is a secure version of the first operating system (B1), which version is loaded into a section of the RAM memory intended for the secure runtime environment during the execution of the secure runtime environment (TZ).
IPC 8 full level
G06F 21/00 (2013.01); G06F 21/57 (2013.01)
CPC (source: EP KR US)
G06F 9/22 (2013.01 - KR); G06F 9/44 (2013.01 - US); G06F 9/45558 (2013.01 - EP US); G06F 21/00 (2013.01 - KR); G06F 21/57 (2013.01 - EP US); G06F 2009/45587 (2013.01 - EP US); G06F 2221/2105 (2013.01 - EP US)
Citation (search report)
See references of WO 2012113547A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011012226 A1 20120830; CN 103477343 A 20131225; EP 2663946 A2 20131120; KR 20140027110 A 20140306; US 2014007120 A1 20140102; WO 2012113547 A2 20120830; WO 2012113547 A3 20130103
DOCDB simple family (application)
DE 102011012226 A 20110224; CN 201280010063 A 20120222; EP 12711340 A 20120222; EP 2012000765 W 20120222; KR 20137024123 A 20120222; US 201214001361 A 20120222