Global Patent Index - EP 1032879 A1

EP 1032879 A1 2000-09-06 - METHOD AND APPARATUS FOR CONTROLLING ACCESS TO CONFIDENTIAL DATA

Title (en)

METHOD AND APPARATUS FOR CONTROLLING ACCESS TO CONFIDENTIAL DATA

Title (de)

VERFAHREN UND GERÄT, UM ZUGANG ZU VERTRAULICHEN DATEN ZU KONTROLLIEREN

Title (fr)

PROCEDE ET APPAREIL POUR CONTROLER L'ACCES A DES DONNEES CONFIDENTIELLES

Publication

EP 1032879 A1 (EN)

Application

EP 98949515 A

Priority

US 9820122 W

Abstract (en)

[origin: WO0019322A1] A method and apparatus for controlling access to confidential data are disclosed. The disclosed apparatus includes a non-volatile memory for storing data and a logic circuit for controlling access to the data contained in the memory. The logic circuit selectively accesses the memory to determine whether at least a portion of the data contained in the memory comprises confidential data by analyzing a property inherent in the accessed data. The disclosed method includes the steps of: defining a predetermined section of the programmable memory as a repository for confidential data; addressing the predetermined section of the programmable memory; calculating a number of data blocks in the predetermined section having a predetermined characteristic; comparing the calculated number to a threshold value; and defining the memory as including confidential data in the predetermined section if the calculated number has a predetermined relationship to the threshold value.

IPC 1-7 (main, further and additional classification)

G06F 12/14

IPC 8 full level (invention and additional information)

G06F 1/00 (2006.01); G06F 21/62 (2013.01); G06F 21/79 (2013.01)

CPC (invention and additional information)

G06F 21/79 (2013.01); G06F 21/62 (2013.01); G06F 2211/007 (2013.01)

Citation (search report)

See references of WO 0019322A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 0019322 A1 20000406; AU 750573 B2 20020725; AU 9582298 A 20000417; CA 2311392 A1 20000406; CA 2311392 C 20040511; EP 1032879 A1 20000906

INPADOC legal status


2004-06-16 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20040426

2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000414

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB