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Machine translation
1. (WO2004008321) SECURE SYSTEM FIRMWARE BY DISABLING READ ACCESS TO FIRMWARE ROM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/008321    International Application No.:    PCT/US2003/022257
Publication Date: 22.01.2004 International Filing Date: 07.07.2003
IPC:
G06F 12/14 (2006.01)
Applicants: PHOENIX TECHNOLOGIES LTD. [US/US]; 411 E. Plumeria Drive, San Jose, CA 95134 (US)
Inventors: LEWIS, Timothy, A.; (US)
Agent: McROSS Loren; Phoenix Technologies Ltd, 915 Murphy Ranch Road, Milpitas, CA 95035 (US)
Priority Data:
10/194,857 12.07.2002 US
Title (EN) SECURE SYSTEM FIRMWARE BY DISABLING READ ACCESS TO FIRMWARE ROM
(FR) MICROLOGICIEL A SYSTEME SECURISE PAR NEUTRALISATION DE L'ACCES EN LECTURE A SA MEMOIRE MORTE
Abstract: front page image
(EN)Systems, methods and software that use a programmable lock bit (Figure 3, element 44) that disables read access to a firmware ROM (Figure 2, element 12) until the CPU (Figure 2, element 11) is reset or enters into a secure CPU mode. The present invention provides for secure system firmware by preventing access to and reading of the contents of the firmware ROM.
(FR)Cette invention concerne des systèmes, des procédés et un logiciel faisant intervenir un bit de verrouillage programmable (figure 3, élément 44) qui neutralise l'accès en lecture à la mémoire morte du micrologiciel (figure 2, élément 12) jusqu'à ce que l'unité centrale de traitement (figure 2, élément 11) soit réarmée ou passe en mode sécurisé. La présente invention porte sur un micrologiciel à système sécurisé qui empêche l'accès à la mémoire morte du micrologiciel et en interdit la lecture des contenus.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)