Global Patent Index - EP 0762337 A3

EP 0762337 A3 20000119 - Method and device for enhancing manipulation-proof of critical data

Title (en)

Method and device for enhancing manipulation-proof of critical data

Title (de)

Verfahren und Anordnung zur Erhöhung der Manipulationssicherheit von kritischen Daten

Title (fr)

Procédé et dispositif pour augmenter la protection contre la manipulation de données critiques


EP 0762337 A3 20000119 (DE)


EP 96250191 A 19960906


  • DE 19534527 A 19950908
  • DE 19534529 A 19950908

Abstract (en)

[origin: EP0762337A2] The control unit (6) has a microprocessor or an OTP (one-time programmable) processor that has, in addition to CPU (6a), other units in common housing, forming the OTP ROM (6b), and OTP ROM (6c) and acting as a security unit against unauthorised manipulation. The first non-volatile memory (NVM 20) is an EEPROM, serving as a second line of defence against manipulation. There is also an external non-volatile memory (NUM 25) acting in the same way connected to the processor (6) through an input/output control module (4), particularly against taking information out.

IPC 1-7

G07B 17/04

IPC 8 full level

G07B 17/00 (2006.01)

CPC (source: EP)

G07B 17/00362 (2013.01); G07B 2017/00395 (2013.01); G07B 2017/00403 (2013.01); G07B 2017/00411 (2013.01); G07B 2017/00427 (2013.01)

Citation (search report)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0762337 A2 19970312; EP 0762337 A3 20000119; US 5771348 A 19980623

DOCDB simple family (application)

EP 96250191 A 19960906; US 71109196 A 19960909